™
SUPERSTACK II SWITCH 2000 TR
®
USER GUIDE
Version 4.0
http://www.3com.com/
Part No. 99032
Published October 1997
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CONTENTS
Summary of ATM Features 1-10
The FDDI Module 1-10
ABOUT THIS GUIDE
Introduction
Conventions
1
Benefits of FDDI 1-11
Summary of FDDI Module Features 1-11
The Token Ring-in-Fast Ethernet (TR-in-FE) Module 1-11
Benefits of TR-in-FE 1-11
1
Related Publications
2
Summary of TR-in-FE Module Features 1-12
Migrating to High-speed Technologies 1-13
High-speed Cascade Connectors 1-14
Token Ring Switching Concepts 1-14
Why Token Ring Switching? 1-14
Source Route Bridging (SRT) 1-14
Transparent Bridging (TP) 1-15
1
OVERVIEW
About the SuperStack II Switch 2000 TR 1-1
System Benefits 1-1
™
System Features 1-2
Summary of Features 1-3
Typical Applications of Token Ring Switching 1-4
Ring Segmentation 1-5
The Front Panel 1-6
Source Route Transparent Bridging 1-16
Spanning Tree 1-16
RJ-45 Ports 1-7
802.1d Spanning Tree 1-16
Front Panel LEDs 1-7
IBM Spanning Tree 1-16
LCD Display Buttons 1-7
The Rear Panel 1-8
Congestion Control 1-17
Forwarding Modes 1-17
Power Socket 1-9
VLANs 1-18
Serial Number 1-9
Advantages of VLAN 1-18
Redundant Power System Connector 1-9
Reset Button 1-9
2
GETTING STARTED
Console Port 1-9
Optional Slide-In Modules 1-9
The ATM Module 1-9
Important Safety Information 2-1
Positioning the Switch 2000 TR 2-2
Considerations for Placement 2-2
Benefits of an ATM 1-9
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Configuration Guidelines 2-3
Power Supply and Fuse 2-3
Replacing the Fuse 2-3
Key Board Shortcuts 3-7
Correcting Text Entries 3-8
Default Users 3-8
Installing the Slide-in Modules 2-3
Installing the Switch 2000 TR 2-5
Rack Mounting 2-5
VT100 Console Menu Map 3-9
Setting Up the VT100 Console 3-10
Switch 2000 TR Management Setup Fields 3-11
MAC Address 3-11
Wall Mounting 2-5
Stack Mounting 2-5
Locally Admin Address 3-11
Work Group ID 3-12
Connecting Redundant Power System 2-6
Connecting to the Serial Port 2-6
Connecting a VT100 Terminal 2-6
Device Defaults 2-6
Device IP Address 3-12
Device SubNet Mask 3-12
Default Router 3-12
SETUP TRAPS 3-12
SERIAL PORT 3-12
3
SETTING UP FOR MANAGEMENT
The LCD Console 3-13
LCD Console Buttons 3-13
Enter 3-13
Switch 2000 TR Management Options 3-1
VT100 Management Interface 3-2
Via the Serial Port 3-2
Via an IP Network Connection 3-2
Head Unit 3-3
Right Arrow 3-13
Up Arrow 3-13
Down Arrow 3-13
Cascade Connections 3-3
Managing over the Network 3-4
IP Addresses 3-4
LCD Console Menu Map 3-14
Setting Up the LCD Console 3-15
IP Address Setup 3-15
Setting Up BOOTP 3-16
Auto Logout 3-18
Operating IP in a Closed Network 3-4
Obtaining Network Addresses 3-4
Management Prerequisites 3-5
Source Routing Prerequisites 3-6
Switch 2000 TR Management Consoles 3-6
The VT100 Console 3-6
Upgrading Software 3-19
Upgrading Module Software 3-20
Resetting the Switch 2000 TR 3-21
VT100 Console Reset 3-21
LCD Console Reset 3-21
Reset Button 3-22
Choice Field 3-6
Entry Field 3-7
Button 3-7
Power Cycle Reset 3-22
List Boxes 3-7
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Unit Configuration 4-14
Setting Up the Unit 4-14
Unit ID 4-14
4
CONFIGURING WITH THE VT100 INTERFACE
Quick Setup 4-2
Bridge Configuration 4-3
Setting Source Routing Transparent (VT100) 4-3
Setting Source Route Bridging 4-4
Setting Transparent Bridging 4-4
Spanning Tree Fields 4-5
Unit Name 4-14
Port Capacity 4-14
Option Slot 4-14
Power Supply 4-14
Power On Self Test 4-15
Roving Analysis 4-15
Spanning Tree Parameters 4-5
Port Configuration 4-6
Administrative Configuration 4-15
Setting Local Security 4-16
Creating New Users 4-17
Deleting Users 4-17
Setting Up Ports 4-6
Setting the Port Admin. State 4-6
Setting VLAN ID 4-6
Setting Port Personality 4-7
Setting Port Priorities 4-7
Setting Congestion Control 4-7
Setting Port Speed 4-8
Editing Users and Changing Passwords 4-18
About the Switch Database (SDB) 4-19
Database Entries 4-19
Database Entry Methods 4-19
Switch Database Configuration 4-20
Deleting Entries from the Database 4-21
Finding Entries in the Database 4-21
SNMP Trap Configuration 4-21
Serial Port Configuration 4-22
Connection Type 4-23
DCD Control 4-23
Setting Forwarding Mode 4-8
Dynamic Cut-Thru Threshold% 4-8
Setting Broadcast Storm Control 4-9
Rising Threshold% 4-9
Falling Threshold% 4-9
Rising Action 4-9
Falling Action 4-9
Port Bridge Configuration 4-10
I/O Module Configuration 4-11
Stack Configuration 4-11
Setting Up the Stack 4-11
Setting sysName 4-12
DSR Control 4-23
Flow Control 4-23
Auto Config 4-23
Speed 4-23
Char Size 4-23
BOOTP Client 4-12
Parity 4-23
VLAN Configuration 4-12
Assigning a Port to a VLAN 4-13
Specifying a Backbone Port 4-13
Stop Bit 4-23
Initializing the Switch 2000 TR 4-24
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Connecting Common VLANs Between Switch Units 7-4
Using Non-routable Protocols 7-4
Using Unique MAC Addresses 7-4
Extending VLANs into an ATM Network 7-4
Example 1 7-4
5
6
7
CONFIGURING WITH THE LCD CONSOLE
Unit Configuration 5-1
Bridge Configuration 5-2
Port Configuration 5-3
Setting Port ID 5-3
Viewing Link State 5-3
Setting Port State 5-4
Setting Speed 5-4
A
SOFTWARE UPGRADE UTILITY
Software Upgrade Utility Command Set A-1
Starting the Software Upgrade Utility A-2
Using the Commands A-3
Setting Port Personality 5-5
I/O Module Configuration 5-5
Resetting to Factory Defaults A-3
Downloading a New Software Image A-3
MONITORING THE SWITCH 2000 TR
Locating Statistics 6-1
Unit Statistics 6-2
Port Statistics 6-3
Port Statistics (Traffic) 6-4
Status Messages A-4
B
C
SCREEN ACCESS RIGHTS
Status 6-7
Fault Log 6-8
SERIAL PORT CABLE PIN-OUTS
Remote Polling (PING) 6-9
LCD Status 6-10
Cabling for Module Options C-1
VIRTUAL LANS
What are VLANs? 7-1
D
E
TROUBLESHOOTING
Troubleshooting Procedures D-1
Benefits of VLANs 7-2
How VLANs Ease Change and Movement 7-2
How VLANs Control Broadcast Traffic 7-2
How VLANs Provide Extra Security 7-2
VLANs and the Switch 2000 TR 7-3
SWITCH 2000 TR
TECHNICAL SPECIFICATIONS
Specifications for Module Options E-2
The Default VLAN and Moving Ports From the Default
VLAN 7-3
Connecting VLANs to a Router 7-3
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F
TECHNICAL SUPPORT
Online Technical Services F-1
World Wide Web Site F-1
3Com Bulletin Board Service F-1
Access by Analog Modem F-1
Access by Digital Modem F-2
3ComFacts Automated Fax Service F-2
3ComForum on CompuServe Online Service F-3
Support from Your Network Supplier F-3
Support from 3Com F-3
Returning Products for Repair F-4
3COM CORPORATION LIMITED WARRANTY
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ABOUT THIS GUIDE
Introduction
How to Use This Guide
This guide provides the information you need to
install and configure the SuperStack II™ Switch 2000
TR (3C510600) into your Token Ring network for
maximum benefit.
This table lists where specific information can be found.
Chapter
Information
1
Overview
2
Getting Started
This guide is intended for use by network administra-
tors responsible for installing and setting up network-
ing equipment. It assumes a basic working
knowledge of Local Area Networks and Token Ring in
particular.
3
Setting Up Management
Configuring with the VT100 Interface
Configuring with the LCD Console
Monitoring the Switch 2000 TR
Virtual LANs
4
5
6
NOTE: If the information in the release notes shipped
with the Switch 2000 TR differs from the information
in this guide, follow the release notes.
7
Appendix
A
B
C
D
E
Software Upgrade Utility
Screen Access Rights
Serial Port Cable Pin-outs
Troubleshooting
Technical Specifications
Technical Support
F
Conventions
The following tables list icon and text conventions
that are used throughout this guide.
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2
ABOUT THIS GUIDE
Table 1 Notice Icons
Related Publications
Icon
Type
Description
Within the Switch 2000 TR document set:
Information
Note
Information notes call attention to impor-
tant features or instructions.
■ Switch 2000 TR Quick Reference Guide. (Part
Number #99033)
Caution
Cautions contain directions that you must
follow to avoid immediate system damage
or loss of data.
■ Switch 2000 TR User Guide. (Part Number #99032)
■ Switch 2000 TR Release Notes. (Part Number
Warning
Warnings contain directions that you must
follow for your personal safety. Follow all
instructions carefully.
#99034)
■ SuperStack II Switch 2000 TR ATM OC-3 Module
User Guide (Part Number #99041)
Table 2 Text Conventions
Convention Description
■ SuperStack II Switch 2000 TR FDDI Module User
Guide (Part Number #99048)
■ SuperStack II Switch 2000 TR TR-in-FE Module
Italics
Italics are used for emphasis or to denote new terms.
User Guide (Part Number #99045)
“Enter” vs.
“Press”
The word “enter” means to type something and then
press the Return or Enter key. Do not press the Return
or Enter key when an instruction simply says “press.”
Text repre-
sented as
screen
This typefaceis used to represent displays that
appear on your terminal screen; for example:
Select a menu option
display
Keys
When specific keys are referred to in the text, they are
called out by their labels, such as the “Return key” or
the “Escape key,” or they may be shown as [Return]
or [Esc].
If two or more keys are to be pressed simultaneously,
the keys are linked with a plus sign (+); for example:
Press [Ctrl]+[Alt]+[Del].
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1
OVERVIEW
This chapter describes the major features, compo-
nents, and concepts of the Switch 2000 TR, including:
™
About the SuperStack II Switch 2000 TR
The SuperStack II Switch 2000 TR is a multiport inter-
networking switch for Token Ring networks.
Designed to satisfy the high demand for bandwidth in
expanding Token Ring networks while preserving the
investment in existing equipment, the Switch 2000 TR
provides a natural migration path for network growth
and high-speed technologies, including ATM and
FDDI.
■ About the SuperStack™ II Switch 2000 TR
■ Summary of Features
■ Typical Applications of Token Ring Switching
■ The Front Panel
■ The Rear Panel
■ Optional Slide-In Modules
■ Token Ring Switching Concepts
The Switch 2000 TR is a 12-port Token Ring stackable
switch that supports throughput rates of more than
400,000 packets per second. Designed to fit comfort-
ably within the data center or the workgroup environ-
ments, the Switch 2000 TR supports up to 72 rings
per stack at 4 or 16 Mbps.
System Benefits
■ Network segmentation—When used in place of
low- performance PC bridges or routers, the
Switch 2000 TR provides a simple method for seg-
menting Token Ring networks into smaller, more
manageable workgroups.
■ Increased bandwidth—A key benefit of segmen-
tation is reduced traffic load, which translates into
increased bandwidth and improved manageability.
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1-2
CHAPTER 1: OVERVIEW
■ Port population—High density port population
relieves traffic congestion and supports 4 and 16
Mbps data rates. In addition, the Switch 2000 TR
has four custom-configurable ports designed for
direct workstation or dedicated server connection.
■
The ATM module supplies 155 Mbps UNI inter-
face, and retains all virtual LAN emulation con-
figuration data, provides ATM signaling, and
offers standard LAN emulation.
■
The TR-in-FE module combines Token Ring and
Ethernet for the purpose of utilizing Fast Ether-
net as a backbone and method of server attach-
ment for Token Ring networks. Through a
process known as tunneling or encapsula-
tion, TR-in-FE uses Fast Ethernet to transport
natively formatted Token Ring frames.
■ Network management—Switch 2000 TR is sup-
®
ported by the Transcend Enterprise Manager
applications for UNIX and Microsoft Windows
®
95 . Both network management applications pro-
vide Simple Network Management Protocol
Remote Monitoring Management Information
Base (SNMP RMON MIB) data using an intuitive
graphical interface to report historical and perfor-
mance statistics.
■ High-speed Cascade Interface—The high-speed
cascade interface enables multiple Switch 2000
TRs to connect to form a single, large switched
domain while reducing the cost typically incurred
with FDDI or ATM functionality. This connection
allows as many as six Switch 2000 TRs to be
stacked.
System Features
■ Congestion Control—The Congestion Control
feature optimizes available buffer space in the
Switch 2000 TR by using the buffering ability in all
Token Ring end stations. This is especially useful
when many ports are transmitting to a common
port such as a server connection. Having conges-
tion control eliminates the chances of dropped
packets in high-traffic client-server environments.
■ VLAN Support—The Switch 2000 TR supports vir-
tual LAN (VLAN) operation by allowing any switch
port to become a member of any one of 15 unique
VLANs (workgroups). By establishing VLANs, LAN
administration tasks such as adds, moves, and
changes become easier while bulk downloads and
configurations remain across workgroups. VLANs
also enhance security and increase network effi-
ciency by controlling traffic flow and containing
broadcasts. VLANs are preserved over the High
Speed Cascade Interface. In addition, indus-
try-standard LAN emulation over ATM provides a
method for creating enterprise-wide virtual LANs
that reflect how networks actually function.
■ Slide-in Option Slot—Optional downlink mod-
ules are available for the Switch 2000 TR. These
modules provide downlinks to high-speed back-
bones such as FDDI, ATM, and Fast Ethernet.
■
The FDDI module supplies a 100 Mbps point of
aggregation for multiple Token Ring switched
segments and supports either Single Attached
Stations (SAS) or Dual Attached Stations (DAS).
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Summary of Features
1-3
■ Roving Analysis—The Roving Analysis Port (RAP)
feature allows you to configure the SuperStack II
Switch 2000 TR to capture and monitor traffic on
any Token Ring LAN connected to the switch using
any industry-standard LAN analyzer.
Summary of Features
■ 12 switched shielded RJ-45 Token Ring ports
■ 4 ports selectable for direct end station attachment
■ High-speed cascade interface
This feature operates on Port 1 of the Switch 2000
TR and applies to all ports of the same switch. To
view traffic on other switches in a stack you must
connect to Port 1 of the appropriate switch and
select the port you wish to view.
■ Front Panel LCD Console for fast configuration
■ Flexible Option Slot for FDDI, ATM, or TR-in-FE
expansion
■ 400,000 packet-per-second aggregate forwarding
rate
Network Analyzer
■ Cut-Thru, Store-and-Forward, or Dynamic Cut-thru
modes
Switch 2000 TR Port 1
(configured as Hub port)
■
Low latency in cut-through mode
SuperStack II
Switch 2000 TR
LINK STATUS
green
yellow
=link OK
=MGMT partition
flashing yellow =auto error partition
1x
6x
off
=inactive
1
1
2
2
3
3
4
4
5
5
6
6
Packet
Status
—
Power
MGMT
—
Packet
Status
—
—
7
7
8
8
9
9
10 11 12
10 11 12
O
O
C
C
7x
12x
ENTER
Option Slot
Cascade
■
No forwarded errors propagated in
store-and-forward mode
Switch 2000 TR Port 12
■
Dynamic Cut-thru monitors error rates and
selects Cut-thru or Store and Forward as appro-
priate
Ring to be monitored
■ Source route, transparent, and SRT bridging modes
supported
Figure 1-1 Roving Analysis
■ IBM and 802.1d Spanning Tree protocols sup-
ported with configurable BPDU addresses for addi-
tional flexibility
■ Congestion Control
■ SNMP network management support
®
■
Transcend Enterprise Manager for HP Open-
View, NetView/6000, SunNet Manager,
®
Microsoft Windows 95
■ SmartAgent support
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1-4
CHAPTER 1: OVERVIEW
■
■
■
■
■
■
SNMP over IP
SNMP MIB II
Bridge MIB
SR Bridge MIB
BOOTP
Typical Applications of Token Ring Switching
Token Ring switches are best suited for, although not
limited to, expanding Token Ring networks. These
networks demand high bandwidth, performance,
monitoring, management, and a logical migration
path for the continued growth of the network while
preserving your investment in existing infrastructure.
Switch 2000 TR Private (3Com Private)
™
■ Part of SuperStack II architecture
Offering a significant advantage over traditional
inter-networking equipment, Token Ring switches
bring immediate relief to networks, solving through-
put and management problems. By replacing low per-
formance two-port PC bridges or routers, Token Ring
switching provides the ability to perform Source
Route bridging, transparent bridging, or both with
Source Route Transparent (SRT) bridging. The follow-
ing illustrations depict some possible uses of the
Switch 2000 TR, including ring segmentation and
migration to high-speed technologies.
■
■
■
■
Redundant Power System
Uninterruptable Power Supply
Integrated network management
One RS-232 DB-9 connector for local configura-
tion
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Ring Segmentation
1-5
Ring Segmentation
High-speed switches offer a more efficient solution over 2-port PC bridges or routers. As illustrated below, segmentation
with a Token Ring switch brings immediate improvement over existing networks by re-distributing traffic
.
Figure 1-2 Using Switch 2000 TR to Segment Network
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1-6
CHAPTER 1: OVERVIEW
The Front Panel
This section describes the front panel components and LEDs of the SuperStack II Switch 2000 TR. Figure 1-3 shows the front
panel.
LCD Status Display
Status and Activity LEDs
SuperStack II
Switch 2000 TR
Link Status
green
yellow
=link OK
=MGMT partition
flashing yellow =auto error
1
7
6
off
=inactive
6
4
4
5
1
2
2
3
3
Packet—
Status —
Power
MGMT
5
6
1
12
12
C
C
Packet—
Status —
7
7
9
9
O
O
8
8
10 11
10 11
12
ENTER
Option Slot
Cascade
Option Slot
Status LEDs
LCD Control Buttons
Power LED
Cascade
Status LEDs
12 x RJ-45 ports
MGMT LED
Figure 1-3 SuperStack II Switch 2000 TR Front Panel RJ-45 Ports
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The Front Panel
1-7
Table 1-1 LED States
RJ-45 Ports
12 RJ-45 ports support unshielded Twisted Pair (UTP)
LED Name
Color
Indicates
or Shielded Twisted Pair cabling (STP) at 4 Mbps or 16
Mbps wire speed.
Flashing green Activity on link
Power
Green
Yellow
Off
Power ON
All 12 ports default to adapter mode for connection
to a Token Ring hub. Additionally, ports 1 through 4
can be configured to hub mode to allow direct
attachment of workstations or servers.
RPS w/alarm
Operation normal
MGMT
Flashing green (slow) Software download
Flashing green (fast) Power On Self Test
(POST)
Front Panel LEDs
Yellow
POST has failed
The LEDs on the front panel of the Switch 2000 TR
reflect the current status of the switch. Use Table 1-2
to interpret the LED states.
LCD Display Buttons
Table 1-1 LED States
Use the LCD display on the front panel of the Switch
2000 TR to select ports, change system parameters,
receive status information, and set the Unit ID num-
ber.
LED Name
Color
Indicates
Packet LEDs
Green
Traffic present
Error frames present
Flashing yel-
low
■
Right and Left buttons—Change or move
digits or go to the previous menu.
Status LEDs
Green
Yellow
Port inserted
■
Up and Down buttons—Scroll up or down in
specific menu and increase or decrease digit
value.
Partitioned via management
Auto Error Partition
Flashing yel-
low
■
Enter button—Enter a menu or use to enter
Off
Port not inserted
the edit mode.
I
Option Slot
Sta-
tus/Packet
Green
Presence of Option card
ENTER
Flashing green Activity on link
Green Cascade connection present
Figure 1-4 LCD Display Buttons
Cascade
Status/
Packet
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1-8
CHAPTER 1: OVERVIEW
The Rear Panel
This section describes the rear panel components of the Switch 2000 TR. Figure 1-5 shows the rear panel.
Reset
IEC Power Socket
Optional Slide-In Module Slot*
Reset Button
High-Speed Cascade Connectors
Serial Number
and Fuse Holder Redundant Power
RS-232 Console
Figure 1-5 Switch 2000 TR Rear Panel
* Refer to the appropriate module installation manual for more information.
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Optional Slide-In Modules
1-9
Power Socket
The Switch 2000 TR automatically adjusts to the
Optional Slide-In Modules
Option modules provide alternate downlinks for the
Switch 2000 TR.
supply voltage. The fuse is suitable for both 110 AC
and 220-240 AC operation. Refer to “Replacing the
Fuse in Chapter 2 for information on replacing fuses.
NOTE: Be sure the filler plate cover is installed when
the module slot is not occupied.
NOTE: The Switch 2000 TR has no ON/OFF switch.
Slide-in modules are available for the following:
Serial Number
Refer to this number if you need to report a fault.
The ATM Module
The SuperStack II Switch TR ATM OC-3 module pro-
vides a high-speed ATM connection between the
Switch 2000 TR and ATM networks. When positioned
in workgroup or departmental LANs, the ATM down-
link module offers a 155 Mbps data path to building,
campus or ATM network backbones directly from the
Switch 2000 TR. Perfect for providing cost-effective
ATM access to smaller isolated LANs or bandwidth
intensive and mission critical applications, the ATM
downlink also provides a logical migration path for
existing Token Ring LANs to mainstream high-speed
networking technologies.
Redundant Power System Connector
Use this connector to attach a Redundant Power
System (RPS) to the Switch 2000 TR. Disconnect the
AC plug when using an RPS.
Reset Button
Using the Reset button simulates a power on/off
cycle. You can also perform a software reset using the
VT100 interface. Refer to “Setting Up the VT100
Console in Chapter 3.
Redundant links can protect your Switch 2000 TR
from network failure or equipment inconsistencies.
The built-in Software Upgrade feature allows you to
download software revisions easily.
Console Port
Use the RS-232 console port for connecting a termi-
nal for serial remote or local out-of-band manage-
ment and configuration. Use the following settings to
configure the VT100:
Benefits of an ATM
■
■
■
■
9600 baud
8 bit
ATM is the only computer networking technology
designed to carry video, voice and data traffic simul-
taneously. ATM provides the level of service necessary
No parity
1 stop bit
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1-10
CHAPTER 1: OVERVIEW
to run each of these bandwidth-intensive applications
across networks.
■ AAL5 ATM Adaptation Layer
■ 16 Virtual LANs (VLANs)
The primary benefits of ATM include:
■ Data buffer to store 40,000 ATM cells
■ Wire Rate Transmission on ATM port
■ ATM is a cell-based communications technology
that easily scales from T1 or ATM 25 to OC-3 (155
Mbps), OC-12 (622 Mbps), OC-48 (2.488 Gbps),
and OC-192 (10 Gbps).
■ Low Latency (68 microseconds between ATM and
Token Ring components).
■ 3Com SmartAgent support, including:
■ Additional services are easily added to existing
■
■
SNMP management using 3Com’s Transcend
Enterprise Manager.
ATM networks.
■ ATM networks are designed for growth and pro-
Telnet management using VT100 interface.
vide future scalability.
■ ATM provides LAN Emulation (LANE) technology
which provides interoperability between existing
Token Ring, Ethernet, and ATM devices.
The FDDI Module
The SuperStack II Switch TR FDDI module provides a
high-speed connection between the Switch 2000 TR
and FDDI backbone networks. When positioned in
workgroup or departmental LANs, the FDDI downlink
module offers a 100 MB data path to building,
campus or FDDI network backbones directly from the
Switch 2000 TR. Perfect for providing cost-effective
FDDI access to smaller isolated LANs or bandwidth
intensive and mission critical applications. The FDDI
downlink also provides a logical migration path for
existing Token Ring LANs to mainstream networking
technologies.
Summary of ATM Features
The following list summarizes the features of the
SuperStack II Switch 2000 TR ATM module.
■ Conforms to ATM Forum Standards
■ Meets OC-3c 155 Mbps interface
■
SONET (STS 3c) and SDH (STM-1) compliant
Multimode Fiber, SC connections
■
■ LAN Emulation (LANE) version 1.0
Redundant links can protect your Switch 2000 TR
from network failure or equipment inconsistencies.
The built-in Software Upgrade feature allows you to
download software revisions easily.
■
■
■
16 Emulated LAN Clients
512 Virtual Circuits
1024 remote MAC addresses
■ User-to-Network Interface (UNI) 3.1
■ Interim Local Management Interface (ILMI)
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Optional Slide-In Modules
1-11
Benefits of FDDI
The Token Ring-in-Fast Ethernet (TR-in-FE) Module
Fiber Distributed Data Interface (FDDI) is a 100-Mbps
fiber optic local area network standard supported by
the ANSI committee.
TR-in-FE is a 3Com developed technology that encap-
sulates Token Ring frames in Fast Ethernet frames.
Bridging the gap between Token Ring and Ethernet,
this technology offers a more cost-effective integra-
tion than traditional bridging and routing, and allows
Token Ring users to expand their bandwidth while
preserving their TR infrastructure.
The primary benefits of FDDI include:
■ A 100 Mbps point of aggregation for multiple
Token Ring segments.
■ Supports Single Attached Station (SAS) or Dual
TR-in-FE is a unique way of combining Token Ring
and Ethernet for the purpose of utilizing Fast Ethernet
as a backbone and method of server attachment for
TR networks. Through a process known as tunneling
or encapsulation, TR-in-FE uses Fast Ethernet to
transport natively formatted Token Ring frames. This
means that both source route and transparent TR
frames addressing information is maintained through
Fast Ethernet (FE) so that it may be interpreted and
utilized by either a destination Token Ring (TR) switch
or FE server.
Attached Station (DAS) functions.
■ Supports server connections via Token Ring FDDI
translation of IP, SNA, IPX, and NetBIOS.
■ Additional services are easily added to existing
FDDI networks.
■ FDDI networks are designed for growth and pro-
vide future scalability.
Summary of FDDI Module Features
The following list summarizes the features of the
SuperStack II Switch 2000 TR FDDI module.
Benefits of TR-in-FE
TR-in-FE offers improvement in the following areas:
■ Scalability
■ Conforms to FDDI ANSI Standards
■ Wire Rate Transmission on FDDI port
■ Low Latency.
■
■
■
TR switching
■ 3Com SmartAgent support, including:
High-speed technologies
Wire-speed performance
■
SNMP management using 3Com’s Transcend
Enterprise Manager.
■ Flexibility
■
Telnet management using VT100 interface.
■
High-speed flexibility (choice of D/L technology)
Desktop flexibility (TR, Ethernet)
■
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1-12
CHAPTER 1: OVERVIEW
■ Manageability
Summary of TR-in-FE Module Features
■
Simple to configure and administer
The following lists summarize the features of the
SuperStack II Switch 2000 TR TR-in-FE module.
TR-in-FE allows both Token Ring and Ethernet to
share the same Fast Ethernet physical wiring infra-
structure and server base without impacting network
performance. TR-in-FE accomplishes this by introduc-
ing routing or traditional bridging via Source-Route to
Transparent translation.
■ Full duplex operation
■ Automatic configuration through PCI registration
■ RJ-45 connector for 100 Mbps data rates over cat-
egory 5 UTP wiring up to 100 meters
■ LEDs to indicate link integrity and link activity
Fast Ethernet is relatively well understood and easy to
configure. Additionally, many tools exist to manage
and administer Fast Ethernet due to its wide accep-
tance in the industry and its similarity to Ethernet.
■ Promiscuous mode support for NDIS 3.0 and
ODI32 drivers
■ Compliance with FCC Class B, CISPR B, and CE
■ Software configurable
TR-in-FE benefits MIS managers most interested in:
■ Preserving existing investments in TR infrastructure
■ Seeking low-cost, high-speed connectivity
■ DOS diagnostics and configuration utility
■ Support for frame sizes up to 3992 bytes
■ Combining Ethernet and Token Ring for common
server access
Fast Ethernet is less expensive than other options,
such as FDDI and ATM. Using FE, the price per port
for server attachment is 20% that of ATM and FDDI.
Token Ring switching allows the install base of TR
equipment and its configuration to remain intact and
operational while allowing for an upgrade to higher
performance through microsegmentation and inter-
faces to higher speed technologies. TR-in-FE repre-
sents one option for integrating Fast Ethernet into the
TR switched environment.
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Migrating to High-speed Technologies
1-13
Migrating to High-speed Technologies
Managers want to migrate to FDDI, ATM, or TR-in-FE easily. Using Switch 2000 TRs, critical resources attach directly to
high-speed technologies while preserving the investment in Token Ring hardware. They also merge easily with existing net-
work management applications. These features allow network managers to introduce additional switches, servers, and sta-
tions seamlessly via direct connections. Switch 2000 TRs can be contained in data centers while remaining connected to
high-speed links with single ATM, FDDI, or TR-in-FE module.
Figure 1-6 Using Switch 2000 TR for Migration to High-Speed Technologies
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1-14
CHAPTER 1: OVERVIEW
wire speed. This 16 Mbps of bandwidth is shared
between all stations on the ring. As applications
become more sophisticated, or as work-stations
become more powerful, or as the number of users
per ring grows, the demand for bandwidth increases.
As a result, stations are limited not by their own pro-
cessing power but by the limitations of the physical
network.
High-speed Cascade Connectors
These connectors provide a high-speed cascade con-
nection between Switch 2000 TRs in a stack. You can
connect multiple units to form a single switched
domain. You can connect up to six Switch 2000 TRs
with these connectors.
A stack of Switch 2000 TRs act as a single multiport
switch. The setup configuration parameters are
shared among switches and the entire stack can be
managed and downloaded as a single IP entity.
In an effort to reduce the traffic per ring and increase
the overall bandwidth availability, existing rings have
been divided into multiple smaller rings. This division
provides more bandwidth per station.
Token Ring Switching Concepts
With an optional FDDI or ATM downlink module,
Token Ring switching also solves problems found in
client-server applications where a shared 100 Mbps
(FDDI) or 155 Mbps (ATM) pipeline can provide easy
access to servers and WAN links.
This section describes Token Ring Switching and
unique features of the Switch 2000 TR, including:
■ Why Token Ring Switching?
■ Source Route Bridging
■ Transparent Bridging
■ Source Route Transparent Bridging
■ Spanning Tree (802.1d and IBM)
■ Store-and-Forward
The major benefits of Token Ring switching are:
■ Bandwidth relief
■ Migration path to high-speed technologies
■ Cost-effective method for achieving LAN intercon-
nectivity
■ Cut-through
■ Dynamic Cut-through
■ Congestion Control
Source Route Bridging (SRT)
Source Route Bridging is a method of allowing a ring
station (node) on a Token Ring network to communi-
cate with another ring station on a different ring
interconnected by bridges. The “source” ring station,
in other words, the node initiating the communica-
tion, is responsible for dynamically determining and
then maintaining information about the “route” to
■ Workgroups
Why Token Ring Switching?
Existing Token Ring networks are built around shared
media technology and typically operate at 16 Mbps
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Token Ring Switching Concepts
1-15
the destination ring station. A route is simply the path
a packet takes through a source route bridged net-
work from the source ring station to the destination
ring station.
parallel source routing switches to provide fault toler-
ance. In the event one switch fails, the other parallel
switch can be configured to automatically maintain
connectivity, providing an alternate route for data
between the two rings.
In a multiple ring environments, nodes on different
rings need additional bridging information before
they can communicate with each other. A source ring
station must first determine if one or more routes
exist to another station on a remote ring.
Transparent Bridging (TP)
Transparent bridging provides the simplest data com-
munication method. In transparent bridging end sta-
tions are not aware of existing intermediate bridges.
As such, a transparent bridge learns about its sur-
rounding network from the source addresses of the
packets that it receives. Forwarding decisions are
based on the destination addresses contained in the
MAC header. Transparent bridges consult their bridg-
ing table (see “Bridge Table) to determine which port
should forward the traffic on to the destination port.
In general, the source ring station determines the
route by sending a “discovery” packet out across the
multi-ring network. Source routing bridges forward
this “discovery” packet while adding path informa-
tion. Likewise, switches forward any response from
the destination ring station to the “discovery” packet
originator. When a source ring station receives a
information. After determining the optimal path, the
ring stations include the path information in every
packet transmitted between them.
Bridge Table
A switch dynamically manages and updates its bridg-
ing table. All switches receive every packet transmit-
ted on the segments attached to its ports. As a result,
a switch is able to “learn” the source MAC addresses
of each station that transmits packets on its attached
segments. Since a switch never places its own MAC
address in a packet that it forwards, the received
source MAC address always identifies the original
transmitter of the packet.
Switching provides connectivity between LANs, form-
ing enterprise-wide networks. In a Token Ring envi-
ronment, source routing switches connect Token Ring
LANs and enable peer-to-peer and terminal-to-host
communications across both local and wide area
Token Ring networks. Both PC workgroup protocols
and IBM’s Systems Network Architecture (SNA) net-
works are supported by source routing switches.
A switch uses the received source address information
to construct its bridging table. The bridging table con-
tains a list of all received MAC addresses and the
ports on which they were learned. From its bridging
Another advantage of switching is that it allows the
segmentation of the Token Ring network into multi-
ple rings to reduce traffic on any one particular ring
segment. The adjacent rings may be connected by
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1-16
CHAPTER 1: OVERVIEW
table, a switch knows which port must be used to
reach each known MAC address.
■ 802.1d Spanning Tree
■ IBM Spanning Tree
Every time a switch receives a packet, it examines its
bridging table to determine if the source MAC
address is contained in its bridging table. If it is not, it
creates a new entry. The switch then searches its
bridging table for the address contained in the
packet’s destination address field. The switch then
forwards the packet to the port associated with the
destination MAC address. If the port specified in the
bridging table is the same port on which the packet
was received, the switch discards the packet.
802.1d Spanning Tree
Spanning Tree is an industry standard protocol
(802.1d) which prevents redundant paths (loops)
from existing within a network. By ensuring that only
one active data path exists between any two rings,
the Spanning Tree protocol prevents the following:
■ Packet duplications
■ Broadcast storms
■ Packet misordering
The “learned” entries in the switch’s bridge table are
subject to aging. That means that if the switch does
not receive a packet from each entry before the
entry’s Age Timer expires, the switches bridging table
deletes the entry. This feature allows entries associ-
ated with dormant stations to be removed from the
switch’s bridge table.
In addition, Spanning Tree also provides fault toler-
ance within the network by automatically reconfigur-
ing the active topology if a fault is detected in the
network. This provides contingency paths in the event
that the active path is disabled and guarantees stabil-
ity.
IBM Spanning Tree
Source Route Transparent Bridging
IBM Spanning Tree operates the same as 802.1d in
that it resolves network loops. However, IBM Span-
ning Tree uses different addresses and parameters
which do not interoperate with 802.1d Spanning
Tree.
As the name implies, source route transparent (SRT)
bridge performs both source routing and transparent
bridging. If a frame with routing information is
received at the bridge, the bridge performs source
route bridging. Likewise, if a frame without routing
information is received at the switch, the switch per-
forms transparent bridging.
The IBM Spanning Tree algorithm reduces the number
of broadcast frames in source routed networks. A
single path is formed between networks from the
root bridge. IBM Spanning Tree applies only to Span-
ning Tree Explorer frames (STEs). All Route Explorer
frames (AREs), and Specifically Routed Frames (SRFs)
Spanning Tree
Spanning Tree support is provided in the Switch 2000
TR.
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Token Ring Switching Concepts
1-17
can use any path in the network. ARE packets are
flooded through all bridges onto all rings. This creates
multiple copies if redundant paths exist in the net-
work.
ery of packets with known good or free
destinations.
■ Off—In Off mode there is no congestion control.
Packet transfers are based on queue availability in
the receive buffer. If there is no buffer space on the
receiving port, packets are dropped.
When multiple requests are received at the destina-
tion; each one causes a response. Implementing
Spanning Tree ensures that the number of broadcast
packets are significantly reduced.
Forwarding Modes
Switch 2000 TR provides three forwarding methods.
For more information on Spanning Tree, refer to
“Spanning Tree Fields in Chapter 4.
■ Store-and-Forward—Switch 2000 TR can use a
conventional store-and-forward method typically
found in bridges. In this mode, packets are
received and buffered (stored) in their entirety
before they are forwarded. This guarantees that
errored frames on the source ring are not for-
warded to the destination. Although
Congestion Control
Congestion control prevents loss of packets due to
congestion on destination ports. You have a choice
among:
store-and-forward guarantees packet stability, it
also involves a transit delay depending on the
length of the packet.
■ Flow Control—Flow control balances the band-
width use of the client ring to that of the server
ring. This is especially useful in focused load condi-
tions where many ports are sending data to a
single port.
■ Cut-thru—Cut-thru avoids the transit delay found
in standard store-and-forward methods. Although
cut-through can be applied only between ports
that are operating at the same wire speed or from
a high speed port to a low speed port, it does pro-
vide better transit rates by forwarding a frame as
soon as enough information is available to deter-
mine the destination port.
Flow control monitors buffer usage and shifts the
load onto the end station. This allows the Switch
2000 TR to use the available bandwidth to access
the port by balancing traffic on the sending ports.
■ Nonblocking—Occasionally packets that are des-
tined for a particular port cannot be delivered. This
is especially true if a ring is busy or not operating.
These packets inadvertently impede the delivery of
packets destined for known good or free rings.
Nonblocking provides a means for discarding pack-
ets that can not be delivered while ensuring deliv-
■ Dynamic Cut-thru—In Dynamic Cut-thru mode
the switch monitors error rates on the source. If a
user set threshold is exceeded, the switch port
changes to store and forward mode until the error
rate reduces. At this point the port reverts to
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1-18
CHAPTER 1: OVERVIEW
Cut-thru mode. The default mode for the Switch
2000 TR is Dynamic Cut-thru.
VLANs facilitate the administration of logical groups
of stations that can communicate as though they
were on the same LAN. VLANs also facilitate moves,
adds, and changes of members of logical groups.
VLANs
A VLAN is defined as a group of location- and topol-
ogy- independent devices that communicate as
though they were on the same physical LAN. This
means that they are not restricted by the hardware
that physically connects them, and segments are
defined by flexible user groups created by the user.
For example, with VLANS, the user can define a net-
work according to:
Traffic between VLANs is firewalled. This limits the
propagation of multicast and broadcast traffic
between VLANs.
Each distinct VLAN is uniquely identified throughout
the bridged LAN. A consistent representation of a
VLAN exists across a VLAN fabric (including ATM).
This means that the shared VLAN knowledge of a par-
ticular packet remains the same as the packet travels
from one point to another.
Department Groups—A VLAN could be created for
the Marketing Department, another VLAN for the
Finance Department, and still another for the Devel-
opment Department.
Hierarchical Groups—A VLAN could be created for
directors, another for managers, and still another for
general staff.
Usage Groups—A VLAN could be created for Email
users, another for multimedia users, and so on.
Advantages of VLAN
All 802 media and shared media support VLANs. In
addition, implementing VLANs:
■ Eases the change of devices
■ Helps control broadcast traffic
■ Provides extra security
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GETTING STARTED
2
This chapter describes the installation and setup pro-
cedures for the Switch 2000 TR:
Important Safety Information
■ Important Safety Information
■ Positioning the Switch 2000 TR
■ Installing the Slide-in Modules
■ Installing the Switch 2000 TR
■ Connecting Redundant Power System
■ Connecting to the Serial Port
■ Device Defaults
NOTE: Warnings contain directions that you must
follow for your personal safety. Follow all instructions
carefully. Please read the following safety information
before installing the Switch 2000 TR.
■ Installation or removal of any add-in module or
cable must be performed by qualified personnel
only.
■ The Switch 2000 TR must be attached to a
grounded power source.
■ The power cord must comply with the standards of
the country in which the Switch 2000 TR is to be
installed.
■ For USA and Canada:
■
The cord must be UL-approved and CSA certi-
fied.
■
The minimum specifications for the flexible
cord:
No. 18 AWG
Type SV or SJ
3-conductor
■
The cord must have a rated current capacity of
at least 10 Amps.
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2-2
CHAPTER 2: GETTING STARTED
■ If the power supply plug is unsuitable and you
must replace it, refer to the following specifica-
tions:
Positioning the Switch 2000 TR
The Switch 2000 TR is suited for data center and
workgroup applications. It can be mounted in a stan-
dard 19-inch rack, on a wall, or free-standing on a
table or similar surface. A mounting kit with two
brackets is provided for wall or rack mounting.
■
■
■
Brown wire to the Live (Line) plug terminal. The
terminal may be marked with the letter L or col-
ored red.
Blue wire to the Neutral plug terminal. The ter-
minal may be marked with the letter N or col-
ored black.
Considerations for Placement
Be aware of the following considerations when
installing the Switch 2000 TR:
Yellow/green wire to the Ground (earth) plug
terminal which may be marked with the letter
(E) or the earth symbol or colored yellow/green.
■ Can cable lengths and media be supported prop-
erly?
■ The Switch 2000 TR operates under SELV condi-
tions (Safety Extra Low Voltage) according to IEC
950. This standard is complied with only when the
unit is connected to equipment following the same
standard.
■ Is cabling located away from sources of electrical
noise such as radios, transmitters and other radio
frequency equipment?
■ Are all objects removed from the top of the unit or
stack?
■ Use only fuses of the same type and manufacture
with the Switch 2000 TR.
■ Is air flow adequate through the side vents?
■ Is unit installed in moisture and water-proof envi-
CAUTION: Never remove the cover. The Switch 2000
TR contains no user-serviceable parts.
ronment?
CAUTION: Never remove an Optional Slide-in
module filler plate without disconnecting the power
source first.
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Installing the Slide-in Modules
2-3
Configuration Guidelines
The cable topology rules for Token Ring are shown
Fuse location
below:
Media
4 Mbps
16 Mbps
Category 3 UTP
Category 4, 5 UTP
Type 1 STP
660 ft/200m
1,320 ft/400m
2,000 ft/600m
330 ft/100m
660 ft/200m
1,000 ft/300m
Power Supply and Fuse
AC connector
The Switch 2000 TR automatically adjusts to the sup-
plied voltage. The fuse is suitable for either 90-110V
A.C. or 220-240V A.C. A spare fuse is provided in the
fuse drawer.
Figure 2-1 Switch 2000 TR Fuse Location
3 Slide out the fuse holder drawer and remove the fuse.
Replacing the Fuse
4 Install the replacement fuse and close the fuse
drawer.
Refer to Figure 2-1 for the location of the fuse. When
necessary, replace the Switch 2000 TR fuse with a
fuse that has the following specifications:
5 Re-insert the power cord and apply power.
■ 250 volts — 4A Slo-Blo
Installing the Slide-in Modules
1 Power down the Switch 2000 TR by removing the AC
This section explains how to install the three optional
modules into a SuperStack II Switch 2000 TR device.
The modules are:
power cord or the Redundant Power System cords.
2 Gently pry open the fuse holder cover with a small
flat-blade screwdriver.
■ ATM
■ FDDI
■ TR-in-FE
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2-4
CHAPTER 2: GETTING STARTED
CAUTION: Always follow Electrostatic Discharge
(ESD) procedures when installing an I/O Module.
1 If the Switch is connected to the network, turn off the
power and disconnect the switch from the main
power supply and the network.
2 Place the Switch on a flat, clean, hard, work surface.
3 Locate and remove the blanking plate that covers the
slot. See Figure 2-2. Retain the blanking plate and the
screws for future use.
TokenRing-In-FastEthernetModule
3C510620
Rx
Tx
Board postions with
electronics facing down
FullDuplex
PortStatus
Tx
Rx
Reset
ConsolePort
9600,8,1,N
4 Use the guide rails within the Switch slot to align the
module. The location of the guide rails and the cor-
rect positioning of the plate is shown in Figure 2-2.
5 Slide the module into the slot without touching the
top or bottom of the circuit board, which positions
upside down on the plate. Ensure that the module is
pushed fully into the unit.
Figure 2-2 Inserting a Slide-in Module into a Switch 2000 TR
6 Use the thumb screws attached to the module to fix
the module firmly into place.
7 Connect the cable to the module port.
NOTE: For cable specifications see the guide that
came with your module.
8 Each end of the cable has a transmit (Tx) and receive
(Rx) connector. Connect the Rx connector to the
port’s Tx socket. Connect the Tx connector to the
port’s Rx socket. Do the same at the other end of the
connection.
9 Power up the switch. The link status LED turns green
once a valid connection is made.
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Installing the Switch 2000 TR
2-5
for mounting the unit. A flat, smooth surface that is
dry and sturdy is best.
Installing the Switch 2000 TR
Rack Mounting
1 Unpack the Switch 2000 TR and place on a hard, flat
surface.
The Switch 2000 TR fits a standard 19-inch data com-
munications rack typically found in wiring closets.
2 Position one of the enclosed mounting brackets over
the mounting holes and attach. See Figure 2-4.
1 Unpack the Switch 2000 TR and place it on a hard,
flat surface.
2 Position one of the enclosed mounting brackets over
the mounting holes and attach. See Figure 2-3.
Figure 2-4 Wall Mounting the Switch 2000 TR
3 Repeat the process for the second bracket.
4 Mount the Switch 2000 TR to the wall. Be sure to
Figure 2-3 Rack Mounting the Switch 2000 TR
allow for adequate ventilation.
3 Repeat the process for the second bracket.
Stack Mounting
4 Insert the Switch 2000 TR in the rack and secure it
with suitable screws (not included). Be sure to allow
for adequate ventilation.
The Switch 2000 TR can be stacked with other com-
ponents of the SuperStack system using the four
enclosed self-adhesive rubber pads. Apply the rubber
adhesive pads to the underside of the unit. Stack the
units, ensuring that the pads of the upper unit sit in
the recesses in the cover of the lower unit.
Wall Mounting
The Switch 2000 TR can be mounted to a wall with
the enclosed brackets. Be sure that the wall is suitable
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2-6
CHAPTER 2: GETTING STARTED
Connecting a VT100 Terminal
Connecting Redundant Power System
To connect a VT100 terminal directly to the serial port
on the Switch 2000 TR you need a standard null
modem cable. Follow these steps:
To install an RPS, proceed as follows:
1 Power down by disconnecting the AC power cord on
the Switch 2000 TR.
1 Connect one end of the cable to the serial port on the
Switch 2000 TR and the other end to the serial port
on the VT100 terminal.
2 Connect an RPS cable assembly to the RPS connector
on the back panel of the Switch 2000 TR.
2 Ensure that your terminal is configured to the appro-
3 Connect the other end of the RPS cable assembly to
priate settings listed above.
the RPS connector on the back panel of the RPS unit.
Device Defaults
Connecting to the Serial Port
The Switch 2000 TR serial port settings are set to:
■ Character size—8
The tables list the factory defaults for the Switch 2000
TR.
Table 2-1 Unit Defaults
Unit ID
■ Parity—None
#6
■ Stop Bit—1
■ Baud Rate—9600
CAUTION: Setting the Unit # ensures that all configu-
ration parameters are retained when connecting
additional switches. Change this number to reflect
position of switch in stack. The first (bottom) switch
should be set to 1.
Terminals connected to the Switch 2000 TR must be
configured to these same settings before you can
communicate.
Connection to the serial port can be direct for local
management or through a modem for remote man-
agement.
Table 2-2 Port Defaults
Admin State
Enabled
Workgroup ID
Personality
Unit 1
For more information on the serial port console, refer
to “Setting Up the VT100 Console in Chapter 3.
Ports 1 through 12 adapter
Normal
Internal Priority
Congestion Control
Token Priority
Non-blocking
Normal
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Device Defaults
2-7
Speed
16 Mbps
Spanning Tree Support
Disabled
Forwarding Mode
Cut-through
Spanning Tree Parame-
ters:
802.1d
Dynamic Cut-thru
Rising
20%
10%
Priority
32768
Falling
Max Age
20 seconds
200 seconds
15 seconds
Broadcast Storm
Rising Threshold
Hello Time
60%
50%
none
none
Forward Delay
Transparent Parameter:
Entry Age
Falling Threshold
Rising Action
Falling Action
Port Bridge Defaults
Priority
300 seconds
100
Path Cost
62
Attached LAN ID
Max-Route Desc.
STE Mode
FFFF (hex)
8
Auto-Span
Table 2-3 Stack Defaults
BootP Client
Enable
Table 2-4 Workgroup Defaults
WorkGroup Name
WGroup Created (single)
Table 2-5 Bridge Defaults
Number of Ports
12
Bridge Type
SRT
BPDU Address
C0-00-00-00-01-00
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2-8
CHAPTER 2: GETTING STARTED
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SETTING UP FOR MANAGEMENT
3
This chapter describes background information for
configuration and the procedures for initial setup of
the SuperStack II Switch 2000 TR, including:
Switch 2000 TR Management Options
You manage the Switch 2000 TR using one of the fol-
lowing communication methods:
■ Switch 2000 TR Management Options
■ Configuring Switch 2000 TR in Stack
■ Managing over the Network
■ Management Prerequisites
■ Switch 2000 TR Management Consoles
■ Setting Up the VT100 Console
■ Setting Up the LCD Console
■ Setting Up BOOTP
■ Use an SNMP network manager such as Tran-
®
scend Enterprise Manager over a network run-
ning IP protocols. Each network manager
application provides its own user interface.
■ Use the VT100 interface for out-of-band commu-
nications by connecting a VT100 terminal (or
workstation with terminal emulation software) to
the serial port of the Switch 2000 TR.
■ Use the VT100 interface over a TCP/IP network for
in-band communications using a workstation run-
ning a VT100 terminal emulation program and Tel-
net.
■ Auto Logout
■ Upgrading Software
■ Resetting the Switch 2000 TR
■ Use the front panel liquid crystal display (LCD) and
associated buttons.
The first step required for setup is assigning a Unit ID
number which you configure with the LCD Console.
Refer to “Management Prerequisites, Setting Unit ID”
for instructions on assigning the Unit ID. You have
two methods for the initial setup—VT100 or LCD
console. When the switch has been configured for
management, you assign the remainder of the
parameters as described in Chapters 4 and 5.
These communications methods are summarized in
the following table and explained in detail in follow-
ing sections.
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3-2
CHAPTER 3: SETTING UP FOR MANAGEMENT
Table 3-1 Switch 2000 TR Management Options
serial port or via a modem connection. This method is
especially useful for initial setup and configuration or
if the device is not reachable via network manage-
ment applications.
Access mechanism Allows you to. . .
Using . . .
Serial Port
Establish an
VT100 Console
out-of-band connec-
tion to the VT100 con-
sole.
This method allows you to manage the Switch 2000
TR when:
IP
Establish in-band
connection to the
VT100 console
Telnet on TCP/IP
protocol stack
■ You configure and initialize the system.
■ The LAN is unable to provide reliable service.
SNMP
LCD
Manage devices using
SNMP network man-
agement application
SNMP on TCP/IP
protocol stack
■ The network manager does not have direct LAN
connection.
Set basic parameter,
view port status, and
set Unit ID
Front panel
display
■ The network manager software does not support
SNMP.
When a connection has been established, the main
Switch 2000 TR banner appears and you can log on.
VT100 Management Interface
The menu-driven interface for the Switch 2000 TR is
known as the VT100 interface or Local Management
interface. Using a simple series of menus, the VT100
interface provides access to switch functions, includ-
ing port, stack, unit, bridge, switch, and workgroup
settings and statistics; communication parameters,
and security levels for individual users. Refer to “The
VT100 Console” for more information.
Via an IP Network Connection
Access the management interface via a Telnet utility
over a network running TCP/IP. The console interface
is the same as that of the interface for the serial port.
The Telnet application requires a VT100 terminal emu-
lation application interface.
Before you can start a Telnet session, you must set up
the IP parameters. To open a Telnet session, you must
specify the IP address of the device you want to man-
age. Up to three Telnet sessions can exist simulta-
neously.
You establish VT100 management communications
with the Switch 2000 TR via the serial port or an IP
Network connection as explained next.
Via the Serial Port
When a connection has been established, the main
Switch 2000 TR banner appears and you can log on.
Access the management interface via a VT100 termi-
nal or using VT100 terminal emulation software. You
can connect directly to the Switch 2000 TR using the
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Configuring Switch 2000 TR in Stack
3-3
Unit ID #
Configuring Switch 2000 TR in Stack
Head Unit
SuperStack II
Switch 2000 TR
LINK STATUS
green
yellow
=link OK
=MGMT partition
flashing yellow =auto error partition
1x
7x
6x
off
=inactive
1
1
2
2
3
3
4
4
5
5
6
6
Packet
Status
—
Power
MGMT
—
Packet
Status
—
—
7
7
8
8
9
9
10 11 12
10 11 12
O
O
C
C
12x
ENTER
Option Slot
Cascade
6
5
4
3
2
SuperStack II
Switch 2000 TR
LINK STATUS
green
yellow
=link OK
=MGMT partition
flashing yellow =auto error partition
1x
7x
6x
off
=inactive
1
1
2
2
3
3
4
4
5
5
6
6
Packet
Status
—
Power
MGMT
—
Packet
Status
—
—
7
7
8
8
9
9
10 11 12
10 11 12
O
O
C
C
12x
ENTER
Option Slot
Cascade
One of the unique characteristics of the Switch 2000
TR is its ability to be part of a stack. When installed as
members of a stack, up to 6 Switch 2000 TRs form
the equivalent of a switching chassis, managed using
the same IP address. All traffic, management, moni-
toring, and configuration tasks and inquiries operate
the rear of each unit. See Figure 3-1.
SuperStack II
Switch 2000 TR
LINK STATUS
green
yellow
=link OK
=MGMT partition
flashing yellow =auto error partition
1x
7x
6x
off
=inactive
1
1
2
2
3
3
4
4
5
5
6
6
Packet
Status
—
Power
MGMT
—
Packet
Status
—
—
7
7
8
8
9
9
10 11 12
10 11 12
O
O
C
C
12x
ENTER
Option Slot
Cascade
SuperStack II
Switch 2000 TR
LINK STATUS
green
yellow
=link OK
=MGMT partition
flashing yellow =auto error partition
1x
7x
6x
off
=inactive
1
1
2
2
3
3
4
4
5
5
6
6
Packet
Status
—
Power
MGMT
—
Packet
Status
—
—
7
7
8
8
9
9
10 11 12
10 11 12
O
O
C
C
12x
ENTER
Option Slot
Cascade
SuperStack II
Switch 2000 TR
LINK STATUS
green
yellow
=link OK
=MGMT partition
flashing yellow =auto error partition
1x
7x
6x
off
=inactive
1
1
2
2
3
3
4
4
5
5
6
6
Packet
—
Power
MGMT
Status
—
Packet
Status
—
—
7
7
8
8
9
9
10 11 12
10 11 12
O
O
C
C
12x
ENTER
Option Slot
Cascade
SuperStack II
Switch 2000 TR
LINK STATUS
green
yellow
=link OK
=MGMT partition
flashing yellow =auto error partition
1x
7x
6x
off
=inactive
1
1
2
2
3
3
4
4
5
5
6
6
Packet
Status
—
Power
MGMT
—
Packet
Status
—
—
7
7
8
8
9
9
10 11 12
10 11 12
O
O
C
C
12x
ENTER
1 Head Unit
Option Slot
Cascade
Configuration rules for the Switch 2000 TR are sim-
ple:
Figure 3-1 Switch 2000 TR in stack setting.
Cascade Connections
■ The head unit must have the lowest Unit ID
number in the stack.
Cascade connectors must attach from the top con-
nector of bottom unit to the bottom connector of
next highest unit, up through the stack. See
Figure 3-2.
■ The head unit should be at the bottom of the
stack.
■ It is recommended that each consecutive unit have
sequential Unit IDs.
■ To ensure redundancy each consecutive unit
should have the same IP address setting as the
head unit.
Figure 3-2 Switch 2000 TR Cascade Connections
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3-4
CHAPTER 3: SETTING UP FOR MANAGEMENT
Assigning unique device addresses is the responsi-
bility of your network organization.
Managing over the Network
Any network manager application running Simple
Network Management Protocol (SNMP) can manage
the Switch 2000 TR, provided the Management Infor-
mation Base (MIB) is installed correctly on the man-
agement station. SNMP files for all 3Com products
are available on the “3Com Bulletin Board Service” in
Appendix F.
Operating IP in a Closed Network
If you are the manager of a network that has no con-
nection to the outside world, you might not need
uniquely assigned network addresses. If you are using
the IP protocol for internal management of your net-
work, you can assign arbitrary addresses, provided
each device is unique.
Network management applications provide their own
user interface to the management facilities. 3Com’s
If you decide to use the IP protocol internally we sug-
gest using addresses in the 192.100.X.Y, series where
X and Y are numbers between 1 and 254.
®
Transcend family of network managers, for instance,
have all the facilities for managing the Switch 2000
TR. The Switch 2000 TR supports SNMP over TCP/IP
protocol.
If you later connect to the outside world, you will
have to re-assign new, valid network numbers
assigned to your network by the NIC or other interna-
tional organization. Refer to “Obtaining Network
Addresses”.
IP Addresses
Internet Protocol (IP) addresses are designed using
dotted decimal notation, such as n.n.n.n, where n is a
number between 0 and 255.
A subnet address is a filtering system for IP addresses.
We suggest using a general mask such as
255.255.255.0 if you are unsure what mask to use.
A sample IP address is 192.128.40.120.
IP addresses have two parts:
Obtaining Network Addresses
■ The first part of the address (192.128.40 in the
example) identifies the network on which the
device resides. Network addresses are assigned by
international organizations. Each set of network
numbers is unique within the context of the Inter-
net.
Contact one of the following organizations to obtain
a valid set of network addresses.
■ In the United States
InterNIC Registration Services
505 Huntmar Park Drive
Herndon, VA 22070
■ The second part of the address (.120 in the exam-
ple) identifies the device within the network.
Telephone number:
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Management Prerequisites
3-5
1-800-444-4345, 1-619-455-4600, 1-703-742-4777
■ In Europe
Management Prerequisites
Before you can successfully operate and manage
the Switch 2000 TR you must assign a Unit ID
number to the device. This section describes the
necessary steps for assigning a Unit ID#.
RIPE NCC
Kruislaan 409
NL-1098 SJ
Amsterdam
The Netherlands
Telephone number:
The only method for assigning a Unit number is via
the LCD Console located on the front panel of the
Switch 2000 TR.
+31 20 592 5065
Locate the LCD Console and proceed as follows:
■ In Asia Pacific
1 Power on the Switch 2000 TR.
Asia Pacific Network Information Center (APNIC-DOM)
c/o Computer Center, University of Tokyo
2-11-16 Yayoi
Switch 2000 TR>Unit ID 6 appears in the LCD Console.
This is the factory default.
Bunkyo-ku, Tokyo 113
Japan
2 Press [Enter] to enter the working menu of the LCD
Console.
Telephone number:
Switch 2000 TR>Unit appears.
3 Press [Enter].
+81 3 3580 3782
UNIT>Unit # appears.
4 Press [Enter].
Unit #>6 appears.
5 Press the [Down Arrow] once. The number 1 appears.
6 Press [Enter]. The Unit ID number has now been set.
7 Press [Left Arrow] twice to return to the main LCD
Console menu.
Continue with the management setup as described in
the remainder of this chapter.
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3-6
CHAPTER 3: SETTING UP FOR MANAGEMENT
Source Routing Prerequisites
Switch 2000 TR Management Consoles
If you plan to operate the Switch 2000 TR in a source
routing environment, you need to assign a segment
ID. Follow the instructions below, from the Port Setup
screen:
The following sections describe how to get started
managing your Switch 2000 TR. If you plan to
manage the Switch 2000 TR using IP or SNMP, you
will have to assign an IP address to the Switch 2000
TR using one of these interfaces:
1 Select Bridge from the bottom of the Port Setup
screen.
■ VT100 Console Interface. See Chapter 4.
■ LCD Console Interface. See Chapter 5.
The Port Bridge Setup screen appears.
■ BootP may also be used to assign IP address. Refer
to “Setting Up BOOTP”.
The VT100 Console
This section describes the screen conventions used in
the Switch 2000 TR VT100 console interface. The
VT100 interface allows you to set and/or view these
switch parameters:
■ IP and associated addresses and management
■ Port personality, speed, and state
Figure 3-3 Port Bridge Setup Screen (Attached LAN ID Setting)
■ Bridge type, bridge number and Spanning Tree
state
2 Assign an Attached LAN ID under the Source Routing
■ Switch 2000 TR status and hardware and software
heading on the right side of the screen.
version numbers
The Attached LAN ID is set to FFFF which is the
default setting for “not assigned.”
Choice Field
Example display:
*text*
You must assign a value to this field to perform
source routing. Refer to “Setting Source Route Bridg-
ing in Chapter 4 for more information.
Text enclosed with asterisks is a list from which you
can select one option. Press [Space] to cycle through
the options. When your choice is highlighted press
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Switch 2000 TR Management Consoles
3-7
[Down Arrow] or [Return] to move to the next field.
Refer to “Switch 2000 TR VT100 Console Interface
Menu Map”.
A list box allows you to select one or more items from
a list. These keys allow you to select from a list:
■ [Return]—moves the cursor to the next field. Car-
ries out a button’s action.
Entry Field
Example display:
[text]
■ [Space Bar]—moves through a text list for a field.
Use it to highlight the item or value you want.
■ [Down Arrow]—moves down a list item by item
Text enclosed in square brackets on the screen indi-
cates a text entry field. This field may be text, numeric
data, or hexadecimal data.
and starts over again at the top.
■ [Ctrl] + [U]—moves the cursor one screen up the
list box.
Password fields are hidden, meaning the text you type
is not shown on the screen.
■ [Ctrl] + [D]—moves the cursor one page down the
list box.
In some cases an Entry field has a default entry. To
change the default value, simply type in a new value
for this field and the default entry will be erased.
Press [Down Arrow] or [Return] to move on to the
next field.
Key Board Shortcuts
Here are some shortcuts you can use to navigate
within the console screens:
■ [Tab]—Moves from one field on a form to the next
on any screen without making a change.
Button
■ [Return]—Moves you to the next form field after
Example display:
you have made an entry.
OK
■ [Left Arrow]—Moves you to the previous field on
the screen or the previous character in an editable
field.
Text for button is always shown in uppercase letters.
Buttons carry out actions. For example OK: or CAN-
CEL. To select a button, move the cursor to the
button and press [Return].
■ [Right Arrow]—Moves you to the next field on
the screen or the next character in an editable
field.
List Boxes
■ [Ctrl] + [R]—Refreshes the screen.
Example display:
■ [Ctrl] + [B]—Moves the cursor to the next button.
■ [Ctrl] + [P]—Returns to the previous screen.
monitor, manager, or security
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3-8
CHAPTER 3: SETTING UP FOR MANAGEMENT
■ [Ctrl] + [N]—Moves to the next screen after imple-
menting current screen settings.
■ [Ctrl] + [K]—Displays list of key strokes.
Correcting Text Entries
Use [Delete] on a VT100 terminal or [Backspace] on a
PC. This key moves the cursor one space to the left
and deletes a character. To delete more than one
character, press the key once for each character.
NOTE: Check carefully before using the Control keys.
If you are using Telnet or a terminal emulation pro-
gram you may find that some Control keys do not
work the same or that they control other functions.
Refer to the documentation that accompanies your
Telnet or terminal emulation software.
Default Users
Three default user types are allowed by the resident
management console. They cannot be deleted or
altered by the network administrator. Refer to
Table 3-2 for default names and passwords. Refer to
Appendix B for a listing of Screen Access Rights.
Table 3-2 Default User Names and Passwords
Default Name
monitor
Password
monitor
manager
security
Access Level
monitor
manager
manager
security
security
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VT100 Console Menu Map
3-9
VT100 Console Menu Map
Figure 3-4 displays the menu structure for the Switch 2000 TR VT100 console interface.
Switch 2000
Main Banner
Switch 2000
Logon
Switch 2000
Main Menu
Quick
Config
User
Access
Levels
Switch
Management
Software
Upgrade
Management
Setup
Remote
Poll
Status
Initialize
Reset
Logoff
Bridge
Config
Fault
Log
Local
Security
Poll
Setup
Traps
Stack
TR Port
Config
Unit
Port
Create
User
Serial
Port
Delete
Users
Change
User
VLAN
Bridge
I/O Module
Figure 3-4 Switch 2000 TR VT100 Console Interface Menu Map
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3-10
CHAPTER 3: SETTING UP FOR MANAGEMENT
4 Log on using the default name security and pass-
word security. See Figure 3-6.
Setting Up the VT100 Console
This section provides instructions for setting up the
VT100 console for local or remote management.
1 Connect a VT100-compatible terminal to the serial
port of the Switch 2000 TR. Configure the terminal to
the following settings:
■ 9600 baud
■ 8 data bits
■ 1 stop bit
■ No parity
2 Press [Return] one or more times until the Switch
Figure 3-6 Logon Screen
2000 Main Banner appears. See Figure 3-5.
5 Select OK. The Main Menu appears. See Figure 3-7.
Figure 3-5 Main Banner
NOTE: You cannot modify these settings. If your ter-
minal is already set up with these values, the Main
Banner appears as soon as power-up completes.
Figure 3-7 Main Menu
6 Select the Management Setup option.
The 3Com Switch 2000 TR Management Setup screen
appears. See “Switch 2000 TR Management Setup Fields”.
3 Press [Return] at the Main Banner.
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Setting Up the VT100 Console
3-11
Switch 2000 TR Management Setup Fields
MAC Address
Displays the Switch 2000 TR unit MAC address.
Locally Admin Address
Use this field to assign locally administered addresses
to the management port. You need to reset the
Switch 2000 TR for the address to take effect. The
Locally Administered Address field allows you to
assign a unique MAC address to the unit. This feature
is useful for identifying specific units by their
addresses.
Figure 3-8 Switch 2000 TR Management Setup Screen
7 Fill in the following fields:
■ Device IP Address
To set a Locally Administered Address, take these
steps.
■ Device Subnet Mask (if applicable)
■ Default Router (if applicable)
1 Enter address in hexadecimal from the Locally Admin.
field. This must be in the range of 400000 000000 to
7FFFFF FFFFFF.
8 Select OK when you have finished Management
2 Select OK.
Setup. You will be asked to confirm your settings.
3 Reset the Switch 2000 TR.
9 Press [Enter]. Settings are confirmed.
10 Reboot the Switch 2000 TR by returning to the main
menu and selecting RESET. See “Resetting the Switch
2000 TR” on page 3-18.
NOTE: The Locally Administered address will not be
valid unless the Switch 2000 TR is reset. Refer to
“Resetting the Switch 2000 TR” for instructions on
resetting.
You are now ready to communicate with the Switch
2000 TR using IP and an SNMP-based management
application.
To reverse the Locally Administered address and revert
to the resident MAC address you must enter all zeros
and reset the Switch 2000 TR.
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3-12
CHAPTER 3: SETTING UP FOR MANAGEMENT
Work Group ID
The workgroup number for purposes of manage-
ment. Management is only part of a single work-
group and should be viewed as a sub-net. If you
move your management setup to a new or different
subnet, you will need to change the workgroup ID.
Device IP Address
You must assign a unique address to the device in this
field. You change the IP address using this field.
Device SubNet Mask
You must assign a suitable network mask to the
device in this field. For a class B address, 255.255.0.0
is suitable. You change the Device SubNet Mask using
this field.
Default Router
Enter the IP address of the router with which the
Switch 2000 TR communicates. You can change the
Default Router IP address using this field.
NOTE: The above IP address parameters and Work
Group ID will not be valid unless the Switch 2000 TR
is reset.
SETUP TRAPS
Select this button to display the setup screen for
SNMP trap parameters. Refer to Chapter 4.
SERIAL PORT
Select this button to display the setup screen for serial
port parameters. Refer to Chapter 4.
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The LCD Console
3-13
Left Arrow
The LCD Console
This section describes the LCD Console. The LCD
Console allows you to enter specific configuration
parameters and obtain status data on the Switch
2000 TR without using a management workstation
console or application.
Use the left arrow to go to the previous menu.
Right Arrow
Switch 2000 TR
Unit Id. 1
Use the right arrow to move to a specific digit on any
data field line.
Up Arrow
ENTER
Figure 3-9 Switch 2000 TR LCD Console
Use the up arrow to scroll up in a specific menu or to
decrease the value of a highlighted digit.
Use the left, right, up, down, and enter buttons to
view, enter, edit, or delete configuration parameters.
Down Arrow
■ Unit ID
■ IP and associated addresses and management
■ Port personality, speed, state
Use the down arrow to scroll down in a specific menu
or to increase the value of a highlighted digit.
■ Bridge type and Spanning Tree state
■ Switch status; hardware and software versions
LCD Console Buttons
Enter
ENTER
Use this button to accept or change data on any field
or scroll further down in LCD menu.
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3-14
CHAPTER 3: SETTING UP FOR MANAGEMENT
LCD Console Menu Map
Figure 3-10 displays the menu structure for the LCD console interface on the front panel of the Switch 2000 TR.
Switch 2000 TR
Switch 2000 TR
Unit Id. 1
ENTER
ENTER
ENTER Switch 2000 TR
> Unit
ENTER
ENTER
Unit #
Port ID
Port ID
Personality
Speed
Port State
Link State
Port ID
Personality
Speed
Port State
Link State
Personality
Speed
Switch 2000 TR
> Port
ENTER
Port State
Link State
Legend:
Module Type
ENTER accepts
selection and moves
to next menu
ENTER
Module State
HW Version
ENTER
Switch 2000 TR
> I/O Module
ENTER
SW Version
LEFT ARROW returns
to previous menu
Boot SW Version
SRT
Transparent
Source-Route
ENTER
ENTER
ENTER
ENTER
Switch 2000 TR
> Bridge
ENTER
ENTER
Bridge Type
Spanning Tree
RIGHT ARROW moves
to next digit
802.1d
IBM
Disabled
UP/DOWN ARROWS
scroll through a
specific menu
IP Mgmt
Switch 2000 TR
> Management
IP Address
Subnet Mask
Default Router
IP Address
Subnet Mask
Default Router
ENTER
ENTER
ENTER
ENTER
IP Mgmt
HW Version
SW Version
Boot SW Ver
ENTER
ENTER
Switch 2000 TR
> Status
Confirm RESET?
Switch 2000 TR
> Reset
Confirm RESET?
Y<ENTER> : N <-
Switch 2000 TR
RESETTING . . . .
Figure 3-10 Switch 2000 TR LCD Console Menu Map
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Setting Up the LCD Console
3-15
A blank decimal notation appears on the IP Address.
Setting Up the LCD Console
3 Enter IP address as follows:
This section provides instructions for setting up the
LCD console for local or remote management.
■
Select the value of the digit by moving the
[Up or Down Arrow] until the desired value
appears. Choose from 0 through 9 and “.”.
1 Press the [Enter] button on the front panel LCD to
enter the main menu.
■
Select the next digit by moving the [Right
Arrow].
Switch 2000 TR
Unit Id. 1
NOTE: Be sure to use standard dotted decimal nota-
tion for the IP address.
ENTER
4 Press [Enter] to accept the address.
If the address is valid, you return to the previous
menu by pressing [Enter]. If the address is invalid an
error message displays and returns you to the previ-
ous menu when you press [Enter].
Figure 3-11 Front Panel LCD Main Banner
2 Press [Down Arrow] until the Switch 2000 TR >Man-
agement screen appears.
5 Press [Down Arrow].
3 Press [Enter] to enter the management menu and
select the desired management type.
The IP Mgmt >Subnet Mask screen appears.
6 Press [Enter].
At this point you can choose IP.
■ If you choose IP, you need to assign an IP address,
subnet mask and default router in order to com-
municate with the Switch 2000 TR. Refer to “IP
Address Setup” on.
A blank decimal notation appears in the Subnet Mask
field.
7 Enter the Subnet Mask address as follows:
■ Select the value of the digit by moving the
[Up or Down Arrow] until the desired value
appears. Choose from 0 through 9 and “.”.
IP Address Setup
From the Management>IP Mgmt screen, proceed
as follows:
■ Select the first digit by moving the [Right Arrow].
8 Press [Enter] to accept the address.
9 Press [Down Arrow].
1 Press [Enter] to select IP address field.
The IP Mgmt >IP Address screen appears.
2 Press [Enter].
The IP Mgmt >Default Router screen appears.
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3-16
CHAPTER 3: SETTING UP FOR MANAGEMENT
10 Press [Enter].
Setting Up BOOTP
A blank decimal notation appears in the Default
Router field.
The BOOTP option allows you to enable or disable the
bootstrap protocol. The BOOTP (bootstrap protocol)
allows the switch to discover and learn its own IP
address and routing table information. To configure a
Switch 2000 TR with the BOOTP option you will need
a BOOTP server program. The MAC address, recorded
on a label on the rear panel of the Switch 2000 TR,
must be entered in the BOOTP server program along
with the corresponding IP address of the Switch 2000
TR and its default route information. This allows the
BOOTP request from the agent to be logged by the
BOOTP server which then supplies the required IP
information.
11 Enter the Default Router address as follows:
■ Select the value of the digit by moving the
[Up or Down Arrow] until the desired value
appears. Choose from 0 through 9 and “.”.
■ Select the desired digit by moving the [Right
Arrow].
12 Press [Enter] to accept the address.
13 Press [Left Arrow] to return to the higher level screens
in the LCD console.
NOTE: RESET the Switch 2000 TR for any address set-
tings to take effect. Refer to “Resetting the Switch
2000 TR” for instructions.
Table 3-3
BOOTP State IP Address Configured BOOTP Requests. . .
Enabled
(default)
No
Sent continuously (approx.
every 512 secs.) until
address is discovered
You are now ready to communicate with the Switch
2000 TR using IP and an SNMP-based management
application. Refer to Chapter 5 for more information
on configuring the bridge, port, and other manage-
Enabled
Disabled
Yes
Not sent, IP address is
known
Yes/No
Not sent
Follow the instructions below to set the BootP com-
munications parameters.
1 Log on to the Switch 2000 TR.
2 Select Switch Management from the main menu.
3 Select *Stack*
4 Select Setup.
The Stack Setup screen appears. See Figure 3-12.
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3-18
CHAPTER 3: SETTING UP FOR MANAGEMENT
4 Press [Enter].
Auto Logout
You return to the screen you were viewing before the
inactivity timer expired. Refer to Table 3-2 for pass-
words.
The Switch 2000 TR has a built-in auto logout feature
which disables the VT100 interface after approxi-
mately three minutes without keyboard activity. This
feature provides a level of security for network man-
agers.
To view the Auto Logout screen proceed as follows:
1 After approximately three minutes without keyboard
activity from any VT100 screen the following message
appears at the bottom of the screen:
“Warning:Inactivity timer expiring within 10 sec-
onds.” After the above warning is posted the follow-
ing message appears:
“Inactivity timer expired.”
2 Press [Enter].
The Auto Logout screen appears. See Figure 3-13.
Figure 3-13 Switch 2000 TR Auto Logout Screen
3 Enter your password.
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Upgrading Software
3-19
Upgrading Software
The Software Upgrade feature allows you to down-
load new software images using TFTP running over
UDP/IP.
When 3Com Corporation issues a new version of the
software image for the Switch 2000 TR, you can
obtain it from the 3Com Bulletin Board Service. See
“3Com Bulletin Board Service in Appendix F.
You can download a version of the software image
from a single unit in a stack. In most cases this unit
will be the head unit. The file name “Unit # n” (see
the Field Name field in Figure 3-14) is reserved for
that purpose, where “n” specifies the ID of the unit
from which the download occurs.
Figure 3-14 Software Upgrade Screen
3 In the Destination field, press [Space Bar] until
*Switch 2000 TR* appears.
The Destination field identifies the device that will
receive the software upgrade.
The following download procedure assumes that you
have more than one switch in your stack and that the
download proceeds from the head unit:
4 Enter the name of the file in File Name field.
This name identifies the file that contains the soft-
ware image to be downloaded. You must place the
image file in a location where it is accessible to the
TFTP load request. Check with your system adminis-
trator if you are unsure of where to place the image
file.
1 From the Switch 2000 TR main menu, select SOFT-
WARE UPGRADE.
2 Press [Return].
The Software Upgrade screen appears. See
Figure 3-14.
5 Enter the address of the Server where the image is
stored.
The address identifies the host that contains the soft-
ware image.
6 Select OK.
The software download begins. While the download
is under way, the MGMT LED flashes green and the
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3-20
CHAPTER 3: SETTING UP FOR MANAGEMENT
screen locks. When the download completes, the
Switch 2000 TR automatically resets and re-boots
with the new software image.
7 In the File Name field, enter “UNIT # n”.
Where “n” specifies the unit ID of the unit from
which the download occurs. In most cases this unit
will be the head unit: Unit # 1.
This procedure downloads the software image from
“Unit # 1” to all other units in the stack
Upgrading Module Software
The ATM, FDDI, and TR-in-FE Modules have their own
software which is upgraded independently of the
Switch software. If you own one of these modules,
you will need to upgrade the software.
To perform a software upgrade for a module, follow
the steps in “Upgrading Software” above, except in
Step 3 select ATM Module, FDDI Module, or TR-in-FE
Module in the Destination field.
For more information regarding these modules, see:
■ SuperStack II Switch 2000 TR ATM OC-3 Module
User Guide (Part Number #99041)
■ SuperStack II Switch 2000 TR FDDI Module User
Guide (Part Number #99048)
■ SuperStack II Switch 2000 TR Token Ring-in-Fast
Ethernet Module User Guide (Part Number
#99045)
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Resetting the Switch 2000 TR
3-21
The Switch 2000 TR resets.
Resetting the Switch 2000 TR
This section provides instructions for resetting the
Switch 2000 TR.
Because some configurable parameters require that
you reset the Switch 2000 TR after making changes, it
is important to understand the reset procedure before
proceeding.
You have four different ways to reset the Switch 2000
TR:
■ VT100 Console
■ LCD Console
■ Reset button
■ Power cycle
Figure 3-15 Switch 2000 TR Reset Screen
LCD Console Reset
When you make certain parameter changes using the
front panel LCD console, you must commit them to
system memory by performing a reset.
VT100 Console Reset
The Switch 2000 TR must be reset after making cer-
tain changes using the VT100 interface. You may
make more than one change before committing them
to memory by resetting.
To reset the Switch 2000 TR using the LCD, proceed
as follows:
1 Press [Up or Down Arrow] until Switch 2000
TR>Reset appears.
To reset the Switch 2000 TR from the VT100 interface
when you have made changes, take these steps:
2 Press [Enter].
The Confirm RESET? screen appears.
3 Press [Enter] to confirm.
1 Select RESET from the Switch 2000 TR Main Menu.
The Switch 2000 TR TR Reset screen appears. See
Figure 3-15.
If you decide not to reset at this point you may press
[Left Arrow] to cancel and return to the previous
screen.
2 Select OK to confirm the reset or CANCEL to stop the
reset. If you select OK you will be prompted to con-
firm again.
The Switch 2000 TR resets.
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3-22
CHAPTER 3: SETTING UP FOR MANAGEMENT
Reset Button
The Switch 2000 TR has a reset button on the rear
panel of the unit. See Figure 3-16.
To reset the Switch 2000 TR using the Reset button,
proceed as follows:
1 Locate the Reset button on the rear panel of the
Switch 2000 TR.
2 Press the switch once.
Power Cord
Reset Button
The Switch 2000 TR resets.
NOTE: The rear panel Reset button also provides
access to the Emergency Software Download facility.
Press switch twice quickly to view. Refer to
Appendix A for more information.
Figure 3-16 Location of Reset Button and Power Cord on the rear
panel of the Switch 2000 TR.
Power Cycle Reset
The Switch 2000 TR can also be reset by removing the
power cord from the rear panel of the unit.
To reset the Switch 2000 TR by removing the power
cord, take these steps:
1 Locate the power cord on the rear panel of the Switch
2000 TR.
2 Remove the power cord from the power socket.
3 Insert the power cord.
The Switch 2000 TR resets.
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CONFIGURING WITH THE VT100 INTERFACE
4
The VT100 console is accessed via the serial console
and provides access to all configuration, manage-
ment, and monitoring facilities.
Switch 2000
Main Banner
■ Quick Setup
Switch 2000
Logon
■ Bridge Configuration
■ Port Configuration
Switch 2000
Main Menu
■ Port Bridge Configuration
■ I/O Module Configuration
■ Stack Configuration
Create Users
Delete Users
Edit User
Quick
Config
User
Access
Levels
Switch
Management
■ VLAN Configuration
Statistics
Setup
Bridge
Config
Stack
Unit
■ Unit Configuration
Statistics
SDB
Setup
■ Administrative Configuration
■ About the Switch Database (SDB)
■ Switch Database Configuration
■ SNMP Trap Configuration
■ Serial Port Configuration
■ Initializing the Switch 2000 TR
TR Port
Config
Statistics
Setup
Port
Setup
Setup
VLAN
Bridge
I/O Module
Figure 4-1 illustrates the portion of the VT100 inter-
face that pertains to the configuration parameters.
For more information on the VT100 interface, refer to
Chapter 3.
Statistics
Setup
*Switch database view
Figure 4-1 VT100 Configuration Path
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4-2
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
Quick Setup
The Quick Setup option provides direct access to the
Bridge Setup and TR Port Setup screens.
1 Log on to the Switch 2000 TR.
The Main Menu appears. See Figure 4-2.
Figure 4-3 Quick Config Screen
3 From the Quick Config screen, select either Bridge
Setup or TR Port Setup.
See the “Bridge Configuration” and “Port Configura-
tion” sections for information about the setup
screens.
Figure 4-2 Main Menu with Quick Setup Highlighted
2 From the Main Menu, select Quick Setup.
The Quick Config screen appears. See Figure 4-3.
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Bridge Configuration
4-3
5 Select OK.
Bridge Configuration
6 Select *SRT*. Press [Space Bar] to change.
7 Press [Return].
The bridge configuration section includes information
on the following:
8 Select *IBM*, *802.1d*, or *disabled* in the Span-
ning Tree Support field. A BPDU value is automatically
assigned:
■ Source Routing Transparent (SRT)
■ Source Route (SR)
■ Transparent (TP)
■ 802.1d Spanning Tree—80-01-43-00-00-00
■ IBM Spanning Tree—C0-00-00-00-01-00
■ Spanning Tree Fields
9 Assign a Bridge Number. Enter in Hex. Choose from 0
Setting Source Routing Transparent (VT100)
to f.
NOTE:This bridge setting requires that you reset the
switch. Refer to “Resetting the Switch 2000 TR in
Chapter 3 for instructions.
10 Select OK.
11 From the Main Menu, press [Space Bar] until *Port*
appears. Select the proper unit and port ID to config-
ure.
1 Log on to the Switch 2000 TR.
12 Select SETUP. The TR Port Setup screen appears. See
2 Select Switch Management from the Main Menu.
3 Press [Space Bar] and select *Bridge*.
Figure 4-5.
4 Select SETUP. The TR Bridge Setup screen appears.
Figure 4-5 TR Port Setup Screen
Figure 4-4 TR Bridge Setup Screen
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4-4
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
13 At the bottom of the TR Port Setup screen, select
BRIDGE. The Port Bridge Setup screen appears. See
Figure 4-6.
7 Assign a Bridge Number. Enter in Hex from 0 to F.
8 In the Max Age field, type 6.
9 In the Forward Delay field, type 4.
10 Select OK.
11 In the TR Management screen, press [Space Bar] until
*Port* appears. Select SETUP. The TR Port Setup
screen appears.
12 At the bottom of the TR Port Setup screen, select
BRIDGE. The TR Port Bridge Setup screen appears.
13 In the attached Lan Id field, enter a LAN ID in hex
(0-FFF).
NOTE:A value of FFFF indicates an unassigned LAN
ID. Use FFFF if the port is either unused or attached to
a transparent-only segment.
Figure 4-6 Port Bridge Setup Screen
14 In the Attached LAN ID field, enter the LAN ID in hex.
15 From the STE Mode field, select *Auto-Span*.
16 Select OK. Repeat for all ports as desired.
14 In the STE Mode field, select *Auto-span*.
15 Select OK. Repeat for all ports as desired.
Setting Transparent Bridging
Setting Source Route Bridging
NOTE:This bridge setting requires that you reset the
switch. Refer to “Resetting the Switch 2000 TR in
Chapter 3 for instructions.
1 Log on to the Switch 2000 TR.
2 From the Main Menu, select Switch Management.
3 Press [Space Bar] and select *Bridge*.
4 Select SETUP. The TR Bridge Setup screen appears.
1 Log on to the Switch 2000 TR.
2 From the Main Menu, select Switch Management.
5 In the Bridge Type field, select *Source-route only* by
3 Press [Space Bar] and select *Bridge*. The TR Bridge
toggling the [Space Bar].
Setup screen appears.
6 In the Spanning Tree Support field, select *IBM*. The
BPDU value is automatically assigned:
C0-00-00-00-01-00
4 In the Bridge Type field, select *Transparent-only*.
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Bridge Configuration
4-5
5 In the Spanning Tree field, select *802.1d* to enable
802.1d compliant Spanning Tree for the Switch 2000
TR. The BPDU value is automatically assigned:
80-01-43-00-00-00.
■ Bridge Hello Time—The period of time between
the generation of configuration messages by a
root bridge is known as Hello Time.
In networks where the probability of losing config-
uration messages is high, a short Hello Time is
desirable. In networks that are fairly stable, a
longer time lowers the overhead of the Spanning
Tree algorithm.
6 Select OK. Repeat for all ports as desired.
Spanning Tree Fields
Spanning Tree is an algorithm designed to eliminate
loops in networks. The algorithm detects and logically
prohibits redundant paths by placing some bridge
ports in the blocking state so that only one route exits
between any two LANs and therefore any two sta-
tions. After Spanning Tree eliminates redundant
paths, the network reconfigures and stabilizes. Any
time the network topology changes the algorithm
automatically re-learns the new configuration and
adjusts the bridge ports accordingly. This guarantees
that all stations are connected.
■ Bridge Max. Age—Maximum Age determines
the amount of time the current Spanning Tree con-
figuration data is judged too old and discarded
from the Switch 2000 TR’s memory. Maximum Age
should never be reached in a properly configured
Spanning Tree.
If this value is too small, the Spanning Tree must
configure too frequently. If this setting is too high
the network requires more time to adjust to
changes in the topology.
■ Forward Delay—The Forward Delay value deter-
mines the amount of time the Switch 2000 TR
spends in the “listening “and “learning” states.
This prevents the forwarding of data packets until
all parts of the topology have been notified of a
change in the topology.
Spanning Tree Parameters
The following parameters are components of the
Spanning Tree algorithm. These are set to factory
defaults.
■ Priority—This setting influences the choice
between the root bridge and the designated
bridge. The bridge with the lowest priority is the
one most likely to be used as the root bridge by
Spanning Tree.
A low value can result in temporary loops as the
Spanning Tree reconfigures the topology. A setting
that is too high forces the network to wait longer
for Spanning Tree to reconfigure the topology.
■ Entry Age—The period of time that must
expire between sends before a MAC address is
“aged out” (removed) from the switch data
base (transparent bridging table).
NOTE:For more information on Spanning Tree and
bridging concepts refer to Interconnections:Bridges
and Routers by Radia Perlman. Addison-Wesley Pub-
lishing Company, Reading MA. © 1992.
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4-6
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
3 Press [Space Bar] and select *Port*.
4 Enter the desired port and unit ID.
Port Configuration
The Port configuration section includes directions for
configuring ports of the Switch 2000 TR, including:
5 Select SETUP. The TR Port Setup screen appears.
■ Admin State
■ VLAN ID
■ Port Personality
■ Internal Priority
■ Congestion Control
■ Token Priority
■ Speed
■ Forwarding Mode
■ Cut-Thru Threshold%
■ Locally Administered Address
■ Broadcast Storm Control
■ Port Bridge Settings
■ Spanning Tree Fields
Figure 4-7 TR Port Setup Screen
Setting the Port Admin. State
Use the Admin. State field to enable or disable indi-
vidual ports.
1 Set this field by toggling the [Space Bar].
2 Press [Return].
NOTE:All settings in the Port Setup screens are “live”
settings. They take effect immediately unless other-
wise noted.
Setting VLAN ID
For more information on the port, refer to “Port Sta-
tistics in Chapter 6.
The VLAN ID field allows you to assign ports to a
VLAN (workgroup) which can only communicate with
other ports in the same VLAN. You have the ability to
assign ports to up to 15 separate VLANS. VLANs are
Setting Up Ports
1 Log on to the Switch 2000 TR.
2 Select Switch Management from the Main Menu.
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Port Configuration
4-7
identified by their VLAN ID. All ports are configured
by default to VLAN 1.
For example: In Normal-priority a token level of 4 is
reserved and all packets are transmitted with a token
priority of 4 or higher, if necessary. In High-priority
mode, a token level of 6 is reserved and all packets
are transmitted with a token priority of 6 or higher, if
necessary.
1 Set this field by entering the desired VLAN number for
the current port.
2 Press [Return].
If Token Priority is disabled on a port, then packets are
transmitted from that port with the priority token
that is available at the time. Token Priority is turned
off if disabled.
Setting Port Personality
Ports 1 through 4 on the Switch 2000 TR can be set
to *Adapter* or *Hub*. In “adapter” mode, the port
can connect to a token ring hub such as a SuperStack
II Hub TR. In “hub” mode, the port acts like a hub
port and can support a directly-connected worksta-
tion or server. Ports 5 through 12 support “adapter”
mode only.
1 Set this field by toggling the [Space Bar].
2 Press [Return].
Setting Congestion Control
An external adapter cable can be used to directly
attach workstations to ports 5 through12.
Congestion Control provides a method for determin-
ing how the Switch 2000 TR reacts in high-traffic load
scenarios. Rather than discarding packets, this unique
feature allows you to control the flow of traffic by
assigning alternate methods for traffic handling.
Choices:
1 Set this field by toggling the [Space Bar] to your
choice.
2 Press [Return].
■ Flow Control—Flow Control allows you to elimi-
nate frame loss by buffering excess frames at the
end station where space is available until the
Switch 2000 TR’s buffers are free. Once the buffers
on the Switch 2000 TR are free, the end station’s
buffers are emptied to the Switch 2000 TR and
packet loss is eliminated.
Setting Port Priorities
Switch 2000 TR has two fields for setting priority:
■ Internal Priority—The Internal Priority field allows
you to distribute the available bandwidth among
the ports. High-priority ports are given priority
access to internal resources, taking priority over
Normal priority ports. Settings are High or Normal.
■ Non-blocking—Non-blocking is the factory
default state. In this mode frames are forwarded to
available destination rings. This occurs even if a
frame has been buffered due to a busy or down
■ Token Priority—The Token Priority field deter-
mines the priority of a token ring port on the
Switch 2000 TR when transmitting to a segment.
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4-8
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
ring ahead in the queue. The frame that has been
buffered for the busy or down queue is discarded
so that deliverable packets can proceed.
■ Dynamic Cut-thru—Dynamic Cut-thru monitors
the error rates on the port. If a user-defined thresh-
old is exceeded, the switch port changes to
store-and-forward until the error rate reduces.
Once the error rate is reduced, the switch returns
to cut-thru mode.
■ Disabled—In the disabled mode, neither Flow
Control or Non-blocking are in use.
1 Set this field to one of the aforementioned fields by
1 Set this field by toggling the [Space Bar].
2 Press [Return].
toggling the [Space Bar].
2 Press [Return].
Dynamic Cut-Thru Threshold%
Setting Port Speed
Speed sets the data rate of ports. Choices:
The Dynamic Cut-Thru Threshold% field allows you
to view the forwarding mode threshold percentage,
which determines the degree to which errored pack-
ets are allowed to pass before the Switch 2000 TR
reverts to Store & Forward mode. These thresholds
apply only when the Switch 2000 TR is configured in
Dynamic Cut-thru mode. The two threshold fields are:
■
16 Mbps (default)
■
4 Mbps
1 Set this field by toggling the [Space Bar].
2 Press [Return].
■ Rising Threshold—When this threshold is
exceeded, the Switch 2000 TR reverts to
Store&Forward mode.
Setting Forwarding Mode
Set the forwarding mode for individual ports using
this field. Choices:
■ Falling Threshold—When this threshold is
crossed, the Switch 2000 TR reverts to Cut-thru
mode.
■ Store & Forward—In this mode, packets are
received and buffered (stored) in their entirety until
they are forwarded. Errored frames will not be for-
warded on the source ring. Although this guaran-
tees packet stability, it also involves a transit delay.
Setting the Locally Admin. Address
The Locally Administered Address field allows you to
assign individual MAC addresses to each port. This
feature is useful for identifying specific ports by their
addresses.
■ Cut-thru—Cut-thru avoids the transit delay found
in standard store-and-forward methods. Cut-thru
can only be applied between ports that are operat-
ing at the same wire speed or from a high-speed
port to a low-speed port.
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Port Configuration
4-9
To set a Locally Administered Address, take these
steps in the Locally Admin. field:
Falling Threshold%
The Falling threshold percentage setting determines
the level at which the broadcast threshold will be
reset. This setting prevents the rising threshold events
from being triggered continuously. Events are only
enabled after the Falling Threshold is met. The default
setting is 50%.
1 Enter address in hexadecimal.
This should be between 400000 000000 and
7FFFFF FFFFFF.
2 Press [OK].
3 Reset the Switch 2000 TR.
1 Set the threshold fields by entering a number
between 0 and 99.
NOTE:The Locally Administered address will not be
valid until the Switch 2000 TR is reset. Refer to
“Resetting the Switch 2000 TR in Chapter 3 for
instructions on resetting.
2 Press [Return].
Rising Action
Use this field to set alarm action for the rising thresh-
old. You have the following choices:
To reverse the Locally Administered address and revert
to the resident MAC address enter all zeros and reset
the Switch 2000 TR.
■ None—No action
■ Event—Event generated for SNMP
■ Blip—Port disabled, then enabled after 5 seconds
Setting Broadcast Storm Control
The Switch 2000 TR automatically creates an alarm
on each of its ports for monitoring broadcast levels if
an alarm is set. This field allows you to set broadcast
threshold levels on each port. You can also set the
threshold action per port. Thresholds are calculated
using a moving 20 second window.
■ Event+blip—Port disabled, then enabled after 5
seconds and event generated
Falling Action
Use this field to set the action for the falling thresh-
old. Choices:
Rising Threshold%
■ None—No action. Default
■ Event—Event generated
The Rising threshold percentage setting determines
the amount of broadcast traffic that will be allowed
before an alarm is sent. The default setting is 60%.
1 Set the action fields by toggling [Space Bar] to the
desired threshold actions.
2 Press [Return].
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4-10
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
■ Priority—Port priority determines the choice of
port when the Switch 2000 TR has two ports con-
nected to the same LAN, creating a loop.
Port Bridge Configuration
Set the Spanning Tree and Source Routing fields for
the Port using the Bridge selection, located at the
bottom of the Port Setup screen. Choices are:
The port with the lowest value has the highest pri-
ority and is deleted by Spanning Tree first.
■ Priority
■ Path Cost—Path cost determines the amount of
overhead required to forward packets to the root
through this port.
■ Path Cost
■ Attached LAN ID
■ Max. Route-Desc
■ STE Mode
The higher the path cost, the less likely Spanning
Tree will use a port for forwarding. The lower the
cost, the more likely Spanning Tree will use a port
for routing.
From the Port Setup screen, perform these steps.
3 Set the Source Routing parameters by toggling the
1 Select *Bridge* from the lower portion of the Port
[Space Bar] as follows:
Setup screen.
■ Attached LAN ID—A unique number that identi-
fies the segment to which port is connected. This
value can be set between 0 and FFF (0-4095). A
value of FFFF (65535) indicates that no segment
number has been assigned to this port.
The Switch 2000 TR Port Bridge Setup screen
appears. See Figure 4-8.
■ Max. Route-Desc—This value describes the
number of routing descriptions allowed in All
Route Explorer (ARE) or Spanning Tree Explorer
(STE) frames. This is also referred to as “hop
count” limit since it limits the number of rings a
packet can traverse.
■ STE Mode—This value determines how this port
responds when presented with Spanning Tree
Explorer (STE) packets. Set fields accordingly by
toggling the [Space Bar].
Figure 4-8 Switch 2000 TR Port Bridge Setup Screen
2 Set Spanning Tree parameters as follows:
■
Disabled—Indicates that the port will not
accept or propagate STE packets and any pack-
ets received will be discarded.
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I/O Module Configuration
4-11
■
■
Forced— Indicates that the port will always
accept and propagate STE packets.
Stack Configuration
Stack configuration allows you to set these stack
attributes:
Auto-Span—Indicates that the port will accept
and propagate STE packets when its Spanning
Tree state is forwarding.
■ sysName
■ BootP Client
NOTE:Spanning Tree does not have to be enabled for
this to function correctly.
NOTE:All settings in the Stack Setup screens are
“live” settings. They take effect immediately.
4 Select OK to save changes.
For more information on the stack, refer to “Stack
Status in Chapter 6.
I/O Module Configuration
I/O Module configuration allows you to set up for the
following module options:
Setting Up the Stack
1 Log on to the Switch 2000 TR.
■ FDDI
2 Select Switch Management from the Main Menu.
3 Press [Space Bar] and select *Stack*.
■ ATM
■ TR-in-FE
4 Select SETUP. The TR Stack Setup screen appears. See
Figure 4-9.
For detailed information on configuring your module
option, see their respective manuals:
■ SuperStack II Switch 2000 TR ATM OC-3 Module
User Guide
■ SuperStack II Switch 2000 TR FDDI Module User
Guide
■ SuperStack II Switch 2000 TR TR-in-FE Module
User Guide
Figure 4-9 TR Stack Setup Screen
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4-12
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
Setting sysName
The sysName field allows you to assign an identifying
name to the stack. This name is displayed on the top
level form.
1 Enter any combination of up to 30 alpha or numeric
characters as an identifier. Spaces are allowed.
2 Select OK.
BOOTP Client
If BOOTP Client is enabled and you have a BootP
server on your network, an IP address will be assigned
automatically to the Switch 2000 TR at power up.
Figure 4-10 VLAN Setup Screen
The screen shows a listbox containing three fields:
VLAN Configuration
■ Port—This field allows you to select the ID of the
The VLAN Setup screen allows you to:
port that you want to set up.
■ Assign ports to VLANs, if those ports use Port
■ Type—This field displays information about the
VLAN Mode
setup of the port:
■ Define a backbone port for each VLAN
■
Bp—The port is a Backbone port for the
VLAN(s) specified in the VLAN Membership
field.
■ View VLAN setup information for the Switch
To access the VLAN Setup screen:
A backbone port is used to connect each VLAN
to the backbone of your network, and has the
following attributes:
1 From the VT100 Main Menu, select SWITCH MAN-
AGEMENT. The Switch Management screen appears.
2 In the Management Level field, choose VLAN.
Addresses received on the port are not stored in
the Switch Database.
3 Choose the SETUP button. The VLAN Setup screen
appears as shown in Figure 4-10.
Frames with unknown addresses received by the
Switch are forwarded to the port.
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VLAN Configuration
4-13
■
ATM—The port is an ATM OC-3c Module port.
For more information, see the SuperStack II
Switch ATM OC-3c Module User Guide.
APPLY—This button applies any changes to the VLAN
database.
VLAN LEC Setup—If the port is an ATM OC-3c
Module port, this button allows you access the VLAN
LEC Setup screen for extending your VLANs into an
ATM network. For more information, see the Super-
Stack II Switch ATM OC-3c Module User Guide.
■ VLAN Membership—This field displays the ID of
the VLAN(s) to which the port belongs.
■
Port ID—This field displays the ID of the port
currently selected in the listbox.
■
VLAN ID—This field allows you to enter the ID
of the VLAN to which the port is assigned. All
ports by default belong to VLAN 1.
Assigning a Port to a VLAN
1 In the Port ID field, type the ID of the required port.
2 In the VLAN ID field, type the ID of the required
Backbone Port—If the port specified in the Port ID
field uses Port VLAN Mode, this field allows you to
specify whether the port is a backbone port. Any port
in a VLAN can be designated as the backbone port for
that VLAN, but you can only have one backbone port
per VLAN. By default, all ports belong to the Default
VLAN (VLAN 1). Because of this, an unconfigured
Switch unit can only have one backbone port.
VLAN.
3 Select APPLY.
CAUTION: Initially, all Switch ports belong to the
Default VLAN (VLAN 1). This VLAN is the only VLAN
which allows an SNMP Network Manager to access
the management agent of the unit. If you remove all
ports from VLAN 1, then an SNMP Network Manager
cannot manage the Switch.
If you specify that an ATM OC-3c Module port is a
backbone port, the port becomes a backbone port for
all the VLANs on which it is active. It cannot be the
backbone port for one VLAN and a standard port for
another.
Specifying a Backbone Port
1 In the Port ID field, type the ID of the required port.
2 In the VLAN ID field, type the ID of the required
VLAN.
NOTE: If you fit a Plug-in Module into a Switch with
no specified backbone ports, the Module automati-
cally becomes the backbone port for the Default
VLAN when you power up or initialize the Switch. If a
Switch has no Plug-in Module, the high speed cas-
cade interface becomes the backbone port for the
Default VLAN when you power up or initialize the
Switch.
3 In the Select Port Type field, select Backbone Port.
4 Select APPLY.
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4-14
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
Unit Configuration
Unit configuration allows you to view these unit
parameters:
■ Unit ID
■ Unit Name
■ Port Capacity
■ Option Slot
■ Power Supply
Figure 4-11 TR Unit Setup Screen
For more information on the unit, refer to “Unit Sta-
tistics in Chapter 6.
Unit Name
Unit Name identifies the type of unit.
Setting Up the Unit
1 Log on to the Switch 2000 TR.
For example: Switch 2000 TR
2 Select Switch Management from the Main Menu.
3 Press [Space Bar] and select *Unit*.
Port Capacity
Indicates the number of ports on a unit.
4 Enter the ID of the unit you wish to set up.
Option Slot
5 Select SETUP. The TR Unit Setup screen appears. See
Figure 4-11.
Identifies any module options activated within the
unit.
Unit ID
Power Supply
The Unit ID identifies the number of the unit for pur-
poses of network management. If you are managing
the Switch 2000 TR using Transcend Enterprise Man-
ager, this ID allows you to identify the unit in a stack.
Unit number 1 appears at the bottom of the stack.
Unit number 6 appears at the top of the stack.
Identifies the power source as follows:
■ Internal—Through the internal power supply of
the Switch 2000 TR.
■ External—Through a Redundant Power System
(RPS).
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Administrative Configuration
4-15
Power On Self Test
Administrative Configuration
Use this field to specify the type of self-test to run at
start-up:
This section provides information on the Administra-
tive settings for the Switch 2000 TR.
■ Normal—A 10 second test that verifies the Switch
1 Log on and select USER ACCESS LEVELS from the
Main Menu. The TR User Access Levels menu appears.
See Figure 4-12.
2000 TR’s basic functions.
■ Extended—A more comprehensive test that lasts
up to 300 seconds.
Roving Analysis
Use the following fields to set up the Roving Analysis
function:
■ Administrative State—Allows you to *enable*
or *disable* the Roving Analysis function of port 1
of the Switch 2000 TR. When this field is enabled,
port 1 of the Switch 2000 TR can be connected to
a LAN analyzer. Roving Analysis is disabled by
default.
Figure 4-12 TR User Access Levels Screen
■ Analyzer on Port—Indicates that Port 1 is the
analyzer port. This field cannot be changed.
The User Access Levels menu allows you to control
access to the Switch 2000 TR. Choices:
■ Port 1 Attached to Port—Use to select the port
you wish to analyze. Choose from ports 2 through
12.
■ LOCAL SECURITY—Allows you to view the secu-
rity for access methods, including serial port,
remote Telnet, and Community-SNMP.
NOTE: The speed of the Roving Analysis Port must
match the speed of the port you are roving into. Port
1 returns to its original state after the Roving Analysis
has been disabled.
■ CREATE USER—Allows you to add as many as ten
new users.
■ DELETE USERS—Allows you to delete any user
except the default users.
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4-16
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
■ EDIT USER—Allows you to change your password
and community. You cannot change other pass-
words or community strings.
2 Select the menu item you want and see the appropri-
ate description and instructions on the following
pages.
Setting Local Security
The TR Local Security screen displays a matrix of
access options for security levels. Choices:
Figure 4-13 TR Local Security Screen
■ Monitor—Allows read-only access to a restricted
set of manageable parameters.
2 Fill in the fields according to these descriptions:
■ Secure Monitor—Allows read-only access to all
manageable parameters.
■ Serial Port—Allows or prevents access to the
management facilities via the serial port. You can
enable or disable access for each of the security
levels, including, Monitor, Secure Monitor, Man-
ager, Specialist.
■ Manager—Allows read and write access to opera-
tional parameters of the Switch 2000 TR, but not
special or security features.
■ Specialist—Allows access to most manageable
For security reasons, the serial port access for security
level is enabled by default and cannot be changed.
parameters except security features.
■ Security —Allows access to all manageable
■ Remote Telnet—Allows or prevents access to the
management facilities via the TCP/IP Telnet proto-
col. Because Telnet has no provision for security
and provides access to everyone, you can disable it
if your network has important or sensitive data.
parameters.
From the TR USER ACCESS LEVELS screen, take these
steps:
1 Select LOCAL SECURITY
■ Community-SNMP—Allows or prevents access to
the management facilities via SNMP using a
remote network management application.
Although SNMP has limited security features, it is
an unsecured protocol. You can disable SNMP
access if your network has important or sensitive
data.
The Local Security screen appears. See Figure 4-13.
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Administrative Configuration
4-17
3 Select OK when you are finished filling in the fields.
characters and are case-sensitive. Passwords are
not displayed on screen.
Creating New Users
3 Assign access levels according to these descriptions
and your network needs. Toggle the [Space Bar] to
view the levels.
Follow these steps to create new users and assign
access levels to the Switch 2000 TR.
■ Access Level—Allows you to assign access level
for new user as follows:
From the TR USER ACCESS LEVELS screen:
1 Select CREATE USER.
■
■
■
■
■
Monitor
Secure monitor
Manager
Specialist
Security
The TR Create User screen appears. See Figure 4-14.
4 Press [Return] after assigning a level.
■ Community String—Assign a community string
using any text string of 32 characters or less. The
community string is only needed for SNMP access.
If you are using a remote SNMP network manager,
the community string specified in the network
manager’s database must be the same as that for
the device. The user name is the default.
Figure 4-14 TR Create User Screen
5 Select OK when you are finished filling in the fields.
these descriptions and your network needs. Press
[Return] after filling in each field.
Deleting Users
The following steps allow you to delete users from
the Switch 2000 TR database. From the TR USER
ACCESS LEVELS screen, take these steps:
■ User Name—Enter a name for the new user using
no more than 10 characters. This field is case sensi-
tive.
1 Select DELETE USER.
■ Password—Allows you to enter the password for
The Delete Users screen appears. See Figure 4-15.
the new user. Passwords can contain up to 10
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4-18
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
2 Scroll using the [Down Arrow] until you highlight the
user you want to delete. You cannot delete default
users or the current user (that is, yourself).
■ User Name—This read-only field displays the
name of the user. This field cannot be changed
using this screen. To change the name of the user,
delete the user and create a new name.
■ Old Password—Enter the old password for this
user.
■ New Password—Enter the new password for this
user.
■ Confirm Password—Re-enter the new password
for verification.
■ Community String—Enter a new community
string.
Figure 4-15 Delete User Screen
3 Press [Return] to delete user.
An asterisk appears next to the name you have chosen to
delete.
4 Select DELETE USERS to delete the user from the User
list.
Editing Users and Changing Passwords
You can edit information about existing users in the
Switch 2000 TR database. From the TR USER ACCESS
LEVELS screen, take these steps:
Figure 4-16 TR Change User Screen
3 Select OK when you have completed the changes.
1 Select EDIT USER.
NOTE:If you forget your password while logged into
the Switch 2000 TR, contact your local technical sup-
port representative for the next step.
The TR Change User screen appears. See Figure 4-16.
2 Fill in fields you wish to edit, including:
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About the Switch Database (SDB)
4-19
time (aging time). This practice prevents the data-
base from filling with obsolete entries. When a
device is removed from the network, its entry is
deleted from the database. Using an SNMP-based
management application or the VT100 console
(serial port or Telnet session), you can set the aging
time (set in seconds) with a default of 5 minutes.
Aging entries are deleted if the Switch 2000 TR is
reset or turned off.
About the Switch Database (SDB)
The Switch 2000 TR supports a database of transpar-
ent addresses received on its local ports. Using this
information, the Switch 2000 TR determines whether
a transparent frame should be forwarded or filtered.
The database holds a maximum of 2000 entries, each
of which includes the MAC address and an identifier
for the port on which it was received.
■ Permanent Entries—Permanent entries are
retained in the database even when the Switch
2000 TR is reset or powered down. Addresses are
made permanent by a system administrator via a
network manager application and the switch data-
base. Refer to “Switch Database Configuration”
for more information.
The Switch 2000 TR Unit Database View allows you
to set up, maintain, and view the Switch 2000 TR
database.
SNMP Traps report the database status as follows:
■ Database 90% full
■ Database 100% full
Database Entry Methods
These traps indicate that the maximum number of users
has been or is about to be met. When the maximum
number has been met, you cannot add any more users to
the database until some are removed. This limitation does
not apply to users connected to the remainder of the net-
work.
Entries to the database happen in two ways:
■ The Switch 2000 TR can learn up to 2000
addresses. Addresses include the source MAC
address and the port identifier of the port on
which the source MAC address is seen. Addresses
are not learned on the designated downlink.
Database Entries
■ The system administrator can enter and update
entries using an SNMP MIB browser, a network
manager application, or the Switch 2000 TR data-
base screen. Refer to “Switch Database Configura-
tion” for more information.
The Switch 2000 TR database has two types of
entries:
■ Aging Entries—Initially, all entries in the database
are the aging type. As traffic moves through the
Switch 2000 TR, device addresses are learned and
stored. Entries are removed (aged out) if the device
has not transmitted any packets for a set period of
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4-20
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
The Switch 2000 TR Unit Database View screen
allows you to set up, maintain, and view the data-
base. The Switching Database is distributed across the
units in a stack. You need to choose a unit before you
can observe the addresses learned by that unit.
Choices:
■ Adding entries to the database
■ Deleting entries from the database
■ Locating entries in the database
Figure 4-18 Switch 2000 TR Unit Database View Screen
Select SDB at the bottom of the Unit Management
screen to access the database. See the highlighted
field in Figure 4-17.
When first powered up, the database appears empty.
As addresses are learned or added, they appear in the
scrolling list box.
■ Port/MAC Address—Scrollable list box displays
the current entries for each of the ports, except the
downlink.
■ Database Entries—Read-only field displays the
number of entries in the database. The database
holds up to 2000 addresses.
■ MAC Address—Field displays the MAC address of
a device highlighted in the scrollable list box. Press
[Return] to view after you highlight an address.
■ Port Number—Displays the Port Number of a
device highlighted in the scrollable list box. Press
[Return] to view after you highlight an address.
Figure 4-17 TR Management Screen
The Unit Database View appears. Refer to Figure 4-18
and the field descriptions.
■ FIND—Command allows you to locate any address
entry in the database.
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SNMP Trap Configuration
4-21
■ REFRESH—Command allows you to refresh the
Finding Entries in the Database
database and display the latest address entries.
From the Unit Database View screen, proceed as fol-
lows:
■ INSERT—Command allows you to add an entry to
the database.
1 Enter the MAC address of the device you wish to find
in the MAC Address field.
■ DELETE—Command allows you to remove an
entry from the database.
2 Select FIND.
The entry appears highlighted in the list box.
Adding Entries to the Database
From the Unit Database View screen, take these
steps:
SNMP Trap Configuration
The Switch 2000 TR uses the SNMP protocol to com-
municate across networks. Traps are messages sent to
an SNMP management application. Typical messages
include fault and change information.
1 Enter the MAC address of the device you want to add
in the MAC Address field.
2 Enter the Port identifier of the device you want to add
in the Port field.
Many SNMP network management applications have
traps that are set automatically. Check the application
documentation.
3 Select INSERT.
Addresses entered using this method are permanent,
that is, they do not age out.
To access the Traps Setup screen, take these steps
from the Switch 2000 TR Management Setup menu:
4 Press [Left Arrow] to move to a different port number.
1 Select SETUP TRAPS from the bottom of the TR Man-
Deleting Entries from the Database
agement Setup screen.
From the Unit Database View screen, take these
steps:
The TR Trap Setup screen appears, as shown in
Figure 4-19.
1 Highlight the device address you wish to remove and
press [Return], or enter the address you wish to
remove in the MAC address field.
2 Select DELETE.
3 Press [Left Arrow] to move to a different port number.
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4-22
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
Serial Port Configuration
The VT100 interface provides a screen for setting the
parameters of the serial port of the Switch 2000 TR.
The serial port provides out-of-band communications
with the Switch 2000 TR for purposes of local config-
uration and communication.
To view the Switch 2000 TR Serial Port Setup screen,
proceed as follows, from the Switch 2000 TR Main
Menu banner.
1 Select Management Setup.
Figure 4-19 TR Trap Setup Screen
The Management Setup screen appears.
2 Select SERIAL PORT.
The TR Trap Setup screen has these fields:
■ IP Address—Enter the network address of the
remote network management station to which
traps are to be sent.
The Serial Port Setup screen appears. See Figure 4-20.
■ Community String—Enter a 32-character text
string for authenticating SNMP communication
between the Switch 2000 TR and a remote net-
work manager. The network manager and the
Switch 2000 TR must be configured with the same
string.
The default community string is public.
■ Throttle—Prevents a remote network manager
from receiving too many traps at the same time.
You can configure the Switch 2000 TR to transmit
traps within a specific delay time period known as
a throttle. The unit of throttle is one thousandth of
a second. The default value is 100, which provides
a delay of one-tenth of a second between each
transmission.
Figure 4-20 Switch 2000 TR Serial Port Setup Screen
NOTE:If you change any of the serial port parame-
ters, you will terminate any existing sessions that are
using the serial port. Be sure that the connecting ter-
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Serial Port Configuration
4-23
minal’s serial port parameters match those on the
Switch 2000 TR. This allows you to continue to access
the management facility from the equipment after
you change the serial port parameters.
modem. Refer to your terminal or modem documen-
tation for more information.
Auto Config
Enabled/Disabled The Switch 2000 TR can
auto-configure the line speed (baud) to work with
your VT100-compatible terminal.
The Serial Port Setup screen displays the following:
Connection Type
Local/remote Select Remote if you wish to manage
the Switch 2000 TR using a modem; DCD Control
and DSR Control will be enabled. For all other cases
this should remain at Local.
Speed
1200/2400/9600/19200 Select the correct line
speed (baud) for your terminal or modem.
Char Size
DCD Control
8
Displays the character bit size for the Switch 2000
Enabled/Disabled This field applies to local con-
nection types. This determines if DCD needs to be
asserted for remote connection and if the connection
requires that DCD be released. Refer to your terminal
or modem documentation for more information.
TR. You should set your terminal to the same value.
Parity
NONE Displays the parity setting for the Switch
2000 TR. You should configure your terminal to the
same setting.
DSR Control
Enabled/Disabled This field applies only to local
connection types. This determines if DSR needs to be
asserted for remote connection and if the connection
requires that DSR be released. Refer to your terminal
or modem documentation for more information.
Stop Bit
1
Displays the Stop Bit setting for the Switch 2000
TR. You should configure your terminal to the same
setting.
Flow Control
XON/XOFF/NONE/RTS-CTS
Unidirectional/RTS-CTS Bidirectional Select the
correct flow control option for your terminal or
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4-24
CHAPTER 4: CONFIGURING WITH THE VT100 INTERFACE
2 Select OK if you wish to initialize
3 Confirm operation by pressing [Enter].
Switch 2000 TR resets.
Initializing the Switch 2000 TR
The Switch 2000 TR VT100 interface allows you to
initialize the nonvolatile memory on the unit and
return to the factory defaults. Be aware that all con-
figuration parameters, database entries, and setting
will be erased and returned to the original factory-set
defaults.
Refer to “Device Defaults in Chapter 2 for default
information and parameters.
You should only initialize the Switch 2000 TR if:
■ The current configuration scheme no longer suits
your network.
■ All other attempts to solve problems have not suc-
ceeded.
From the Switch 2000 TR Main Menu, proceed as fol-
lows:
1 Select INITIALIZE from the Main Menu.
The Initialization screen appears. See Figure 4-21.
Figure 4-21 Switch 2000 TR Initialization Screen
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CONFIGURING WITH THE LCD CONSOLE
5
This chapter describes the Switch 2000 TR LCD Con-
sole management facilities and provides procedures
for configuring and managing the device. This con-
sole is accessed from the front panel and provides
access to most configuration, management, and
monitoring facilities. This chapter assumes you have
prepared the Switch 2000 TR for management.
Unit Configuration
The most important task of setting up the Switch
2000 TR is assigning a Unit ID number to the indi-
vidual units. When installed as members of a
stack, up to 6 Switch 2000 TRs form the equiva-
lent of a switching chassis, managed using the
same IP address. All traffic, management, moni-
toring, and configuration tasks and inquiries
operate through the high-speed cascade located
at the rear of each unit. The Unit ID number rep-
resents the position of the Switch 2000 TR in a
stack. Each Switch 2000 TR must be assigned a
unique Unit ID number. The LCD Console pro-
vides the best method for this task.
■ Unit Configuration
■ Bridge Configuration
■ Port Configuration
■ I/O Module Configuration
For more information on the LCD Console, refer to
“LCD Status in Chapter 6 and “Setting Up the LCD
Console in Chapter 3.
To set the Unit ID number, proceed as follows from
the Switch 2000 TR>Unit banner:
1 Press [Enter] twice.
2 Using the [Up or Down Arrows], set the Unit ID to #1.
NOTE: If the unit you are configuring is to be the
head unit, it must be the lowest number in the stack.
3 Press [Enter] to accept (save) the Unit ID #.
4 Press the [Left Arrow] to return to the Switch 2000 TR
>Unit screen and complete the remaining LCD config-
uration tasks as described in this section or use the
VT100 console as described in Chapter 4.
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5-2
CHAPTER 5: CONFIGURING WITH THE LCD CONSOLE
■ Transparent Bridging
■ Source Route
Bridge Configuration
Bridge settings can be made using the LCD console. If
6 Press [Enter] to select appropriate bridge type.
BRIDGE >Bridge Type appears.
7 Press [Down Arrow].
you have made settings using the VT100 interface,
those settings will be reflected in the LCD console.
Refer to Chapter 3 for more information on navigat-
ing the LCD console.
BRIDGE >Spanning Tree appears.
8 Press [Enter].
Although many of the steps in the following proce-
dure are similar, be aware that the settings will vary
depending on the bridging environment you choose.
Refer to Chapter 1 for more information on the types
of bridging supported by the Switch 2000 TR.
Spanning Tree: <802.1d> appears.
9 Press [Down Arrow] to select Spanning Tree type.
Choices:
NOTE: Some bridge settings (Spanning Tree) will not
take effect until the Switch 2000 TR is reset. Refer to
“Resetting the Switch 2000 TR in Chapter 3 for
instructions on resetting the Switch 2000 TR.
■ 802.1d—IEEE 802.1d standard. This setting is typi-
cally used for Transparent bridging or Source Route
Transparent.
■ IBM—IBM Spanning Tree standard. This setting is
typically used in Source Routing environments.
From the Switch 2000 TR LCD banner, proceed as fol-
lows:
■ Disabled—No Spanning Tree support.
10 Press [Enter].
1 Press [Enter].
Switch 2000 TR >Unit Id appears.
11 Press [Left Arrow] to return to the higher-level screens
in the LCD console.
2 Press [Down Arrow] until Switch 2000 TR >Bridge
appears.
3 Press [Enter].
BRIDGE >Bridge Type appears.
4 Press [Enter].
Bridge Type:<SRT> appears.
5 Press [Down Arrow] to select bridge type. Choose
from:
■ SRT (Source Route Transparent)
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Port Configuration
5-3
Setting Port ID
Port Configuration
ceed as follows:
Port parameters can also be set from the LCD console
on the Switch 2000 TR front panel. If you have made
settings using the VT100 interface, those settings will
be reflected in the LCD console. Refer to Chapter 3
for more information on navigating the LCD console
and the LCD console map.
1 Press [Enter].
Switch 2000 TR >Unit appears.
2 Press [Down Arrow] until Switch 2000 TR >Port
appears.
The screens are circular, meaning that you can access
them by scrolling either up or down. For the sake of
simplicity, these instructions use only the Down Arrow
to move through the screens.
3 Press Enter.
Port >Port ID appears with the port number. Initially
the port number shows Port 1.
4 Press [Enter].
You can set these parameters using the LCD console:
5 Use the [Up or Down Arrow] to scroll the ports and
■ Port ID
select the port you wish to configure.
■ Link State
■ Port State
■ Speed Mode
■ Personality
6 Press [Enter] to select the port.
Port >Port ID appears, and the port number reflects
the port number you chose in step 5.
Viewing Link State
Refer to the LCD Console menu map (Figure 3-9) for
more information.
Link State reflects the current state of the port and
cannot be changed. Refer to “Port Statistics in
Chapter 6 for definitions of the states.
From the Switch 2000 TR>Unit Id # LCD banner, pro-
ceed as follows:
Port ID
Personality
Speed
Port State
Link State
Port ID
Personality
Speed
ENTER
Switch 2000 TR
> Port
ENTER
1 Press [Enter].
Port State
Link State
Link State
Switch 2000 TR >Unit appears.
2 Press [Down Arrow] until Switch 2000 TR >Port
Figure 5-1 LCD Console Port Menu
appears.
3 Press Enter.
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5-4
CHAPTER 5: CONFIGURING WITH THE LCD CONSOLE
4 Press [Down Arrow] until Port # >Link State appears.
5 Press [Enter].
The Port State identifies the current state of the port
you are viewing.
6 Press [Down Arrow] to select the state. Choices:
Link State # >[state] appears.
■
Enable
Disable
The Link State identifies the current state of the port
you are viewing.
■
■ Disabled
7 Press [Enter] to confirm the state.
■ Blocking
If you select Disable, the LED for the corresponding
port lights yellow to show the current state.
■ Listening
■ Learning
Setting Speed
■ Forwarding
From the Switch 2000 TR>Unit Id # LCD banner, pro-
ceed as follows:
■ Broken
This read-only field cannot be changed.
6 Press [Left Arrow] to return to previous menu.
1 Press [Enter].
Switch 2000 TR >Unit appears.
2 Press [Down Arrow] until Switch 2000 TR >Port
Setting Port State
From the Switch 2000 TR>Unit Id # LCD banner, pro-
appears.
ceed as follows:
3 Press [Enter].
1 Press [Enter].
4 Press [Down Arrow] until Port # >Speed appears.
5 Press [Enter].
Switch 2000 TR >Unit appears.
2 Press [Down Arrow] until Switch 2000 TR >Port
Speed # [speed] appears.
appears.
Press [Down Arrow] to select speed. Choices:
3 Press [Enter].
■
16 MB
4 MB
4 Press [Down Arrow] until Port # >Port State appears.
5 Press [Enter].
■
6 Press [Enter] to confirm the speed setting.
Port State # >[state] appears.
7 Press [Left Arrow] to return to the previous menu.
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I/O Module Configuration
5-5
personality of ports 5 through 12, you will be warned
that your selection is invalid.
Setting Port Personality
Ports 1 through 4 can each be configured as either
“Hub Port” or “Adapter Port.” The Adapter mode is
the default for these ports. Ports 5 through 12 can
only be set as “Adapter Port.” Refer to “SuperStack II
Switch 2000 TR Front Panel RJ-45 Ports in Chapter 1
for more information.
7 Press [Enter] to confirm the personality on the port.
I/O Module Configuration
The console provides a quick method for viewing
information regarding the FDDI, ATM, and TR-in-FE
optional modules. Refer to Chapter 3 for more infor-
mation on navigating the LCD console.
From the Switch 2000 TR>Unit Id # LCD banner, pro-
ceed as follows:
1 Press [Enter].
You can display the following using the LCD console:
Switch 2000 TR >Unit appears.
2 Press [Down Arrow] until Switch 2000 TR >Port
■ Module Type
appears.
■ Module State
3 Press [Enter].
■ Hardware Version #
■ Software Version #
■ Boot Software Version #
5 Press [Enter].
6 Press [Down Arrow] to select the state. Choices on
ports 1 through 4 only:
To view I/O module status, proceed as follows from
the top LCD menu, which displays the Switch 2000
TR banner. See Figure 5-2.
■ Adapter—Ports on the Switch 2000 TR are
designed to act as adapters and therefore, attempt
to join a ring according to Token Ring specifica-
tions. In this mode the Switch 2000 TR must be
connected to a Token Ring hub or MAU.
■ Hub—The Switch 2000 TR can also act like a
Token Ring hub port and provides a direct station
attachment on ports 1 through 4. This feature is
especially useful for direct attachment of servers.
NOTE: Ports 5 through 12 are permanent Adapter
ports and cannot be changed. If you try to change the
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5-6
CHAPTER 5: CONFIGURING WITH THE LCD CONSOLE
For more information about setting up the modules
refer to the documentation that came with them:
Module Type
Module State
HW Version
SW Version
Boot SW Ver
ENTER
Switch 2000 TR
> I/O Module
ENTER
■ SuperStack II Switch 2000 TR ATM OC-3 Module
User Guide (Part Number #99041)
L
■ SuperStack II Switch 2000 TR FDDI Module User
Figure 5-2 I/O Module LCD Menus
Guide (Part Number #99048)
■ SuperStack II Switch 2000 TR TR-in-FE Module
1 To view the next level, press [Enter].
User Guide (Part Number #99045)
2 Press the [Down Arrow] until Switch 2000 TR >
Module appears.
3 Press [Enter]. STATUS > Module Type appears.
4 Press [Down Arrow] to scroll down through the I/O
Module menus.
5 Press [Enter] at any one of the following fields to view
the information described below. Press [Down Arrow]
to move through the circular menus.
■ Module Type—One of three module types:
■
■
■
FDDI
ATM
TR-in-FE
■ Module State—The current status of the module
(UP or DOWN).
■ HW Version—The current version of the hardware
PROM code.
■ SW Version—The current version of the software
code. (Not applicable for the TR-in-FE module.)
■ Boot SW Version—The current Boot software
version. (Not applicable for the TR-in-FE module.)
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MONITORING THE SWITCH 2000 TR
6
This chapter provides information on viewing the cur-
rent operating status of the Switch 2000 TR, display-
ing errors using the fault log, and carrying out a
remote poll (PING).
Locating Statistics
See Figure 6-1 to locate specific status, statistics, and
polling information. Refer to “LCD Status” for infor-
mation on retrieving LCD statistics.
Regularly viewing statistics allows you to be sure that
your network and Switch 2000 TR devices are operat-
ing properly. By viewing the performance and statisti-
cal data recorded by the Switch 2000 TR, you will
begin to see performance patterns develop which can
be used to eliminate problems before they impair the
operation of your network.
Unit statistics, Port statistics, stack statistics, and Remote Poll
This chapter includes information on the following
fields:
■ Locating Statistics
■ Unit Statistics
■ Port Statistics
■ Stack Status
■ Status
TR status and access to Fault Log
■ Fault Log
Figure 6-1 Locating Statistic Information and Status
■ Remote Polling (PING)
■ LCD Status
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6-2
CHAPTER 6: MONITORING THE SWITCH 2000 TR
The Unit Statistics screen displays these buttons:
Unit Statistics
RECEIVED—The total number of frames that have
been received by the port including frames with
errors.
NOTE:The Unit Statistics screen provides an easy
method for viewing per-port performance. It displays
port traffic activity for each active port. Values are
refreshed approximately every two seconds. The
counters are reset after the values reach approxi-
mately 4.2 billion. See Figure 6-2.
TRANSMITTED—The total number of frames trans-
mitted by the port, including frames with errors.
FORWARDED—The total number of frames received
and then forwarded by the port.
To view the Unit Statistics screen, take these steps
from the Switch 2000 TR Main Menu:
FILTERED—The total number of frames filtered by
this port. Frames are filtered because the destination
station was on the same segment as the source sta-
tion.
1 Select Switch Management.
The TR Management screen appears.
2 Press [Space Bar] until Unit appears.
3 Press [Down Arrow] until Statistics highlights.
4 Press [Return].
BROADCASTS—The total number of broadcast
frames seen by the port.
The Unit Statistics screen appears.
5 Select statistic category and view.
CLEAR SCREEN COUNTERS—Use this button to set
screen counters back to zero. This clears only counters
displayed in the Unit Statistics screen. It does not
affect the counters on the device. This prevents
remote SNMP stations from seeing network anoma-
lies.
Figure 6-2 Unit Statistics Screen
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Port Statistics
6-3
The TR Port Statistics screen displays this information:
Port Statistics
Unit ID—The number of the unit with which the port
is associated.
The TR Port Statistics screen provides an easy method
for viewing individual port performance. See
Figure 6-3. TR Port Statistics provide more detailed
information on individual ports. This screen also pro-
vides access to the Traffic Statistics screen.
Port ID—The number of the port you are viewing.
Link State—The current state of the port you are
viewing. The port states are:
To view the TR Port Statistics screen, take these steps
from the Switch 2000 TR Main Menu:
■ Listening—The state in which all ports are placed
while Spanning Tree configures the network topol-
ogy. Ports remain in this state until the root bridge
is selected. This period should be long enough for
a port to hear from all other ports on the switch.
1 Select Switch Management.
The TR Management screen appears.
2 Press [Space Bar] until Port appears.
3 Press [Down Arrow] until Statistics highlights.
4 Press [Return].
■ Learning—The state in which ports receive data
on the topology of the network for the purpose of
learning the stations that are attached to the port.
If the port receives no information that would
force it into the blocking state, then it moves on to
the forwarding state.
The TR Port Statistics screen appears.
■ Forwarding—This state allows the port to per-
form standard switching and bridging functions.
Packets are received and the port either forwards
or discards them based on the address of the
packet and the switch’s address table.
■ Blocking—In this state, the port continues to
receive data on the status of the network topology
but does not transmit them. The port also receives
no packets nor learns the addresses of stations for
forwarding or receiving.
Figure 6-3 TR Port Statistics Screen
■ Disabled—The state in which Spanning Tree has
been turned off. Port is disabled by management.
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6-4
CHAPTER 6: MONITORING THE SWITCH 2000 TR
Current Utilization—The percentage of bandwidth
usage for the port you are currently viewing. This
value indicates the general traffic level on the individ-
ual port. Ideally, this figure should be below 60%,
which indicates that the port is responsible for a rea-
sonable amount of traffic relative to the entire ring.
ing. A typical TR Port Statistics (Traffic) screen appears
in Figure 6-4.
High utilization values suggest that you should adjust
the network topology by reducing load on that port
by segmentation.
Frames Forwarded—A running average of the pro-
portion of the received frames that are forwarded.
This value is expressed as a percentage of all received
frames, based on a sampling interval of 20 seconds.
Figure 6-4 Sample TR Port Statistics (Traffic) Screen
Broadcast Frame Bandwidth—A running average
of the broadcast frame bandwidth. This value is
expressed as a percentage of theoretical maximum
bandwidth availability, based on a sampling interval
of 20 seconds.
The TR Port Statistics (Traffic) screen displays this
information:
Unit ID—The identifying number of the unit you are
viewing.
Error Frames—This field displays a running average
of the percentage of error frames with CRC errors
and is based on a sampling interval of 20 seconds.
Port ID—The identifying number of the port you are
viewing.
Frames Received—The total number of frames that
have been received by the port including frames with
errors.
Traffic Statistics—Select this category to view the
Port Statistics (Traffic) screen. See the next section.
Port Statistics (Traffic)
The TR Port Statistics (Traffic) screen provides a more
Frames Transmitted—The total number of frames
transmitted by the port, including frames with errors.
detailed display of statistics for the port you are view-
Multicasts Received—The number of frames suc-
cessfully received with a multicast destination
address. This number does not include frames
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Port Statistics
6-5
directed to a broadcast address or frames received
with errors.
Frame Size Analysis—A series of counters that rep-
resent the composition of the traffic on the Switch
2000 TR. The counters display the percentage of
packets that are categorized by received length as
represented by the following octet parameters:
Broadcasts Received—The number of frames
received that have a broadcast destination address.
This number does not include frames with errors.
■ 18 to 63 octets
Octets Received—The number of octets received by
the port, including the MAC header and CRC. Octet
counters are accurate to the nearest 256-byte bound-
ary.
■ 64 to 127 octets
■ 128 to 255 octets
■ 256 to 511 octets
Octets Transmitted—The number of octets trans-
mitted by the port, including the MAC header and
CRC. Octet counters are accurate to the nearest
256-byte boundary.
■ 512 to 1023 octets
■ 1024 to 2047 octets
■ 2048 to 4095 octets
■ Packets greater than 4095 octets
Line Errors—The total number of CRC errors that
have occurred on the port.
Frames Forwarded—The total number of frames
received by this port and then forwarded to their des-
tination address.
Cut-thrus Received—The total number of cut-thru
packets received on the port.
Errors—Total of both line errors (CRCs) and lost
frames.
Lost Frames—Frame transmitted by the Switch 2000
TR which failed to make the return trip.
Abort Frames—Frames transmitted by the Switch
2000 TR that need to be aborted by transmitting an
abort delimiter.
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6-6
CHAPTER 6: MONITORING THE SWITCH 2000 TR
Status—Displays the unit number and the current
status and position in the stack.
Stack Status
The Stack Status screen provides easy access to the
SW Version—Displays the current resident software
version for each unit.
vital statistics associated with a stack. Units and their
status, the software version currently running on each
unit and the MAC address of each unit displays.
Mgmt MAC Address—Displays the management
MAC address for each unit. An asterisk (*) next to a
MAC address indicates that the unit is the head unit.
To view the Stack Status screen, perform these steps
using the Switch 2000 TR Main Menu:
1 Select Switch Management.
The TR Management Screen appears.
2 Press [Space Bar] until Stack appears.
3 Press [Down Arrow] until Statistics highlights
4 Press [Return].
The Stack Status screen appears.
Figure 6-5 TR Stack Status Screen
The Stack Status screen displays this information:
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Status
6-7
Number of Resets—The total number of resets since
the Switch 2000 TR was first installed or initialized, by
manual power-up, manual reset, or watchdog time-
out expiry.
Status
The Status screen provides read-only information
about the Switch 2000 TR. Information provided on
this screen is especially useful for troubleshooting and
monitoring system history.
Last Reset Type—The type or cause of the most
recent reset on the Switch 2000 TR. Resets may be
caused by management command, watchdog time-
out, power failure or interruption, a manual reset, or
system error. If you experience a problem, give this
information to your technical support representative.
You can view some Status information using the LCD
console on the front panel of the Switch 2000 TR.
Refer to “LCD Status” for more information.
To view the Status screen, perform these steps using
the Switch 2000 TR Main Menu:
Hardware Version—The current hardware version
of the Switch 2000 TR. Give this number when you
request technical support.
1 Select STATUS and press [Return].
The Status screen appears, as shown in Figure 6-6.
Upgradeable Software Version—The version of
the software image stored in Flash EPROM. This ver-
sion is automatically updated when you download
new software. Give this version when you request
technical support.
Boot Software Version—The version number of the
Boot software stored on the Switch 2000 TR. This
number is useful when requesting technical support.
FAULT LOG—Select this button to display the Switch
2000 TR Fault Log. Refer to “Fault Log,” next.
Figure 6-6 Status Screen
The Status screen displays the following information:
System Up Time—The elapsed time in seconds since
the Switch 2000 TR was last reset.
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6-8
CHAPTER 6: MONITORING THE SWITCH 2000 TR
Time (seconds)—The time elapsed between the last
reset when the fault occurred.
Fault Log
The Fault Log displays read-only information about
Area—Information useful for fault diagnosis by tech-
nical support.
the Switch 2000 TR. The Fault Log updates whenever
an abnormal condition occurs. This information is for
internal 3Com use only. Your supplier may ask you to
quote the Area and Fault Number if you report a
problem.
Fault Number—A hexadecimal number indicating
the type of fault. Give this number to your technical
support representative.
To view the Fault Log, take these steps from the
Switch 2000 TR Main Menu:
1 Select STATUS and press [Return].
The TR Status screen appears.
2 Select FAULT LOG and press [Return].
Figure 6-7 TR Fault Log Screen
The TR Fault Log screen appears and the screen dis-
plays the following:
Reset Count—The number of resets recorded at the
time of the fault.
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Remote Polling (PING)
6-9
When the poll is complete, the Round Trip Time dis-
plays the interval in milliseconds between sending the
frame to the target device and receiving a response at
the Switch 2000 TR. If the target device does not
respond within approximately 10 seconds, the field
displays no reply.
Remote Polling (PING)
The Remote Poll screen allows you to send a single
frame to a remote device. Use this feature to verify if
a remote device is active and responding. It can help
locate network problems and is also referred to as
PING.
To use the Remote Poll feature, take these steps from
the Switch 2000 TR Main Men:
1 From the Switch 2000 TR Main Menu, select Remote
Poll.
The TR Remote Poll screen appears.
Figure 6-8 TR Remote Poll Screen
2 Enter the IP address of the device you want to poll in
the Target Address field.
Follow the address notation conventions as illustrated
on the Remote Poll screen.
3 Select Poll.
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6-10
CHAPTER 6: MONITORING THE SWITCH 2000 TR
STATUS >SW Version> appears.
6 Press [Enter].
LCD Status
The LCD console located on the front panel of the
Switch 2000 TR provides useful hardware, software,
and system version information. Refer to Chapter 5
for more information.
SW Version #> appears and displays the Boot software
version stored on the Switch 2000 TR.
7 Press [Left Arrow] to return to STATUS > SW Version>.
8 Press [Down Arrow].
HW Version #:
[R/O Version]
Switch 2000 TR
> Status
STATUS
>HW Version >
[Left Arrow]
[Enter]
[Enter]
[Down Arrow]
STATUS >BOOT SW Ver> appears.
9 Press [Enter].
SW Version #:
[R/O Version]
STATUS
>HW Version >
[Enter]
[Left Arrow]
[Down Arrow]
Boot SW Ver #: displays the software version stored in the
EPROM of the Switch 2000 TR. This version number is
automatically updated when you download new software.
Boot SW Ver #:
[R/O Version]
STATUS
>Boot SW Ver >
[Left Arrow]
[Enter]
Switch 2000 TR
> Status
10 Use [Left Arrow] to scroll back up through the menus.
Figure 6-9 LCD Console Status Chart
To view the LCD status, take these steps from the
Switch 2000 TR>Unit Id banner:
1 Press [Down Arrow] until Switch 2000 TR>Status>
appears.
2 Press [Enter].
STATUS>HW Version appears.
3 Press [Enter].
HW Version#: appears and displays the hardware ver-
sion of the Switch 2000 TR.
4 Press [Left Arrow] to return to the STATUS >HW Ver-
sion> display.
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VIRTUAL LANS
7
This chapter provides information on Virtual Local
Area Networks (VLANs). Definitions, benefits, sample
configurations and concepts of VLANs are described
here, including:
What are VLANs?
A VLAN is defined as a group of location- and topol-
ogy- independent devices that communicate as
though they were on the same physical LAN. This
means that LAN segments are not restricted by the
hardware that physically connects them; the seg-
ments are defined by flexible user groups that you
create using software.
■ What are VLANs?
■ Benefits of VLANs
■ VLANs and the Switch 2000 TR
Setting up Virtual Local Area Networks (VLANs) on
the Switch 2000 TR provides you with less time-con-
suming network administration and more efficient
network operation.
With VLANs, you can define your network according
to:
■ Departmental Groups—For example, you can have
one VLAN for the Marketing department, another
for the Finance department, and another for the
Development department.
The following sections explain more about the con-
cept of VLANs and explain how they can be imple-
mented on the Switch 2000 TR.
■ Hierarchical Groups—For example, you can have
one VLAN for Directors, another for Managers,
and another for general staff.
■ Usage Groups—For example, you can have one
VLAN for users of email, and another for users of
multimedia.
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7-2
CHAPTER 7: VIRTUAL LANS
How VLANs Provide Extra Security
Benefits of VLANs
Devices within each VLAN can only communicate
with devices in the same VLAN. If a device in VLAN 1
needs to communicate with devices in VLAN 2, the
traffic must cross a router. Routers have filtering and
security features to block unauthorized access.
Implementing VLANs on your network has three main
advantages:
■ It eases the change and movement of devices on
networks.
Figure 7-1 shows a network configured with three
VLANs—one for each of the departments that access
the network. The membership of VLAN 1 is restricted
VLAN 2 is restricted to ports 4, 5, 6, 7 and 8 of Switch
B while VLAN 3 spans both Switches containing ports
6, 7, 8 of Switch A and 1, 2, 3 of Switch B.
■ It helps to control broadcast traffic.
■ It provides extra security.
How VLANs Ease Change and Movement
With traditional IP networks, network administrators
spend much of their time dealing with moves and
changes. If users move to a different IP subnet, the IP
addresses of each endstation must be updated manu-
ally.
In this simple example, each of these VLANs can be
seen as a ’broadcast domain’—physical LAN seg-
ments that are not constrained by their physical loca-
tion.
With a VLAN setup, if an endstation in VLAN 1 is
moved to a port in another part of the network, you
only need to specify that the new port is in VLAN 1,
and this is something that can be done remotely if
you have 3Com’s Transcend Enterprise Manager for
Windows (v6.0 and above).
Specific configurations using the Switch are shown
later in this chapter.
How VLANs Control Broadcast Traffic
With traditional networks, congestion can be caused
by broadcast traffic that is directed to all network
devices whether they require it or not. VLANs increase
the efficiency of your network because each VLAN
can be set up to contain only those devices that need
to communicate with each other.
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VLANs and the Switch 2000 TR
7-3
VLANs and the Switch 2000 TR
Backbone Connecting Multiple Switches
Switch B
The Switch 2000 TR supports VLANs which consist of
a set of switch ports. Each switch port can only
belong to one VLAN at a time, regardless of the
device to which it is attached.
Switch A
1
2
3
4
5
6
7
8
9
10 11 12
1
2
3
4
5
6
7
8
9
10 11 12
Each Switch 2000 TR can support up to 16 VLANs.
However, you can have more than 16 VLANs in your
entire network by connecting the 16 switched VLANs
to other VLANs using a router.
Development
Department
VLAN 3
The Default VLAN and Moving Ports From the
Default VLAN
Marketing
Department
VLAN1
Finance
Department
VLAN 3
On each Switch, VLAN 1 is the default. It has two
properties:
Figure 7-1 The concept of VLANs
■ It contains all the ports on a new or initialized
Switch.
■ It is the only VLAN which allows an SNMP Network
Manager to access the management agent of the
unit.
By default, if a device is attached to a port in the
Default VLAN and you want to move the device into
another VLAN, you need to use the VLAN Setup
screen to place the port in that VLAN.
Connecting VLANs to a Router
If the devices in a VLAN need to talk to devices in a
different VLAN, each VLAN requires a connection to a
router. Communication between VLANs can only take
place if they are all connected to the router. A VLAN
not connected to a router is isolated.
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7-4
CHAPTER 7: VIRTUAL LANS
within one VLAN will not be able to communicate
with devices in a different VLAN.
Connecting Common VLANs Between Switch Units
In the Switch 2000 TR, you typically connect VLANs to
other Switch 2000 TRs and units using backbone
ports. This allows the Switch to forward all frames
with an unknown address to the rest of the network,
and it also stops the Switch Database from becoming
full if there are more than 500 addresses in the net-
work. Note that you normally require one backbone
port per VLAN.
Using Unique MAC Addresses
If you connect a server with multiple network adapt-
ers to the Switch, we recommend that you configure
each network adapter with a unique MAC address.
Extending VLANs into an ATM Network
If the Switch has an ATM OC-3c Module installed, you
can extend the VLANs you have defined in your exist-
ing network into an ATM network. For more informa-
tion, see the SuperStack II Switch ATM OC-3c
Module User Guide.
In addition, to make the Switch-to-Switch connec-
tions more cost-effective, the Switch 2000 TR allows
you to specify that one port forms part of a Virtual
LAN Trunk (VLT). A VLT is a connection that carries
traffic for multiple VLANs between Switch units. If
you configure both ends of a Switch-to-Switch con-
nection as part of a VLT, you only need that one con-
nection for all the VLANs.
Example 1
The example shown in Figure 7-2 illustrates a simple
VLAN configuration with a single Switch 2000 TR
whose ports are divided between two VLANs. VLAN 1
is able to talk to VLAN 2 using the connection
between each VLAN and the router.
NOTE: VLTs can only be used for links between
SuperStack II Switch 2000 TR units. You cannot use
VLTs for Switch-router links.
To set up this configuration:
If you specify that a backbone port on one VLAN is
part of a VLT, that backbone port becomes a back-
bone port for all the VLANs on the Switch, even if
they had no backbone port before. If you subse-
quently disable the VLT function on that port, the port
becomes the backbone port for the Default VLAN
(VLAN 1) and all other VLANs lose their backbone
ports.
1 Use the VT100 screens or VLAN Server database to:
a Place ports 1-6 in VLAN 1.
b Place ports 7-12 in VLAN 2.
2 Connect a port in VLAN 1 to the router.
3 Repeat steps 2 and 3 for VLAN 2.
Using Non-routable Protocols
If you are running non-routable protocols on your
network (for example, DEC LAT or NETBIOS), devices
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7-6
CHAPTER 7: VIRTUAL LANS
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SOFTWARE UPGRADE UTILITY
A
The SuperStack II Switch 2000 TR has a back-up
Software Upgrade Utility that allows you to:
Software Upgrade Utility Command Set
At the > prompt you can enter commands followed
by a [Return]. The commands are not case-sensitive.
■ Download a new software image if the opera-
tional image has been damaged. This feature
should be used for emergency situations only!
A (ip-address)
■ Download a new software image for new revi-
Sets the IP address of the Switch 2000 TR. Enter the IP
sions.
address in dotted decimal format. For Example: 192.192.1.1
B
The Software Upgrade Utility is also available
through the Switch 2000 TR Main Menu under
SOFTWARE UPGRADE. It is easier to access this util-
ity through the Main menu, when it is available.
Refer to "Upgrading Software" in Chapter 3 for
more instructions.
Starts the download.
B (address)
Starts the download and loads the software from the
server with the IP address entered.
D (ip-address)
This appendix provides information on configuring
the Software Upgrade Utility:
Sets the IP address of the default router. You must set this
parameter if the software image is kept on a server
beyond a router.
■ Software Upgrade Command Utility
Set—Keyboard commands for using the Software
Upgrade Utility.
F (filename)
Specifies the filename of the software image file.
You must enter this value for a successful download.
“UNIT# (1 through 8) is reserved for downloading
from another unit in stack.
■ Using the Software Upgrade Utility—Proce-
dures for configuring parameters. Downloads are
initiated in-band or from another unit in stack
using the high-speed cascade connection.
G
Re-starts the Switch 2000 TR without downloading a new
software image. Use this command after using the com-
mand R.
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A-2
APPENDIX A: SOFTWARE UPGRADE UTILITY
L
Starting the Software Upgrade Utility
Lists the current settings of the Switch 2000 TR and pro-
vides a status report for the previous download attempts.
Use this command to check that you have entered all the
parameters necessary for a successful download.
1 Connect a terminal to the serial port on the rear
panel of the Switch 2000 TR. Refer to "Console
Port" in Chapter 1.
Figure A-1 represents the screen after using the com-
mand.
2 Quickly (within 3 seconds) press the reset button on
the rear panel twice. Refer to "Reset Button" in
Chapter 1.
M (subnet mask)
Enter the subnet mask in dotted decimal format.
All LEDs on the front panel light and the Software
Upgrade Utility appears on the console. See Figure
A-1.
For Example: 255.255.0.0
R
Resets the Switch 2000 TR to the factory default values for
the main software. Use the G command after using this
command.
WARNING: Resetting the Switch 2000 TR erases all
configuration parameters, including IP addressing
information.
P
Allows you to set the personality (A for adapter, H for hub
on ports 1 through 4 only) and speed (4 or 16).
Figure A-1 Software Upgrade Utility Screen
For example: P 2 A for port 2 set to adapter or
P 11 16 for port 11 set for 16 Mbps
S (address)
Sets the IP address of the server that holds the new soft-
ware image file. This command does not start the down-
load. Use the B command to start the download.
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Using the Commands
A-3
The utility displays a series of dots on the screen as
the download proceeds. After approximately two
minutes, this message appears:
Using the Commands
The following sections tell you how to use the Soft-
Software Upgrade Complete
ware Upgrade Utility screen.
3 Reset the device. Refer to "After the Download"”
If you enter the Software Upgrade Utility acciden-
tally, enter the command G to quit. If you give no
keyboard input for 30 seconds, the utility will time
out.
and "Resetting the Switch 2000 TR" in Chapter 3.
Refer to "Status Messages" for more information.
After the Download
Resetting to Factory Defaults
When you have successfully downloaded the new
software image, the Switch 2000 TR resets
automatically. After a successful download the
Switch 2000 TR retains the following configuration
data:
Enter command R and then command G if you do
not want to download a new software image.
Downloading a New Software Image
1 Change the following parameters:
■ IP address of the Switch 2000 TR to which you
will be downloading the new software image
(enter A).
address)
■ Unit and port setup
■ Subnet mask (enter M).
■ SNMP interface data (for example, the commu-
nity string)
■ Default router (enter D). This needs to be set only
if the software image file is on a server that
needs to be accessed over a gateway or router.
and passwords)
■ IP address of the server (enter S).
the download.The following configuration values are reset
to the factory defaults:
2 When you have made any necessary parameter
changes, Press command B.
■ Alarm Table
■ Fault Log
The following message appears:
Starting Software Upgrade
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A-4
APPENDIX A: SOFTWARE UPGRADE UTILITY
11—Invalid record type.
12—Checksum error.
Status Messages
The Software Upgrade utility reports the status of
the last download attempt. It reports error messages
if the download was unsuccessful.
Message 13 and 14 indicate that you are trying to
load the wrong type of software image file.
The status messages are described below:
13—File is for the wrong device type.
Messages 1 through 7 are standard TFTP errors as
detailed in IFC 783. These errors generally indicate that
you do not have access privileges to access the soft-
ware image. Check with your system administrator.
14—File is for the wrong hardware version.
Messages 15 through 17 indicate that the file is cor-
rupted. It may have been corrupted during transmis-
sion. Attempt the download again.
1—File not found. Check that you have entered the
correct file name.
15—File header record is missing from file.
16—Byte count error.
2—Access Violation.
4—Illegal Operation.
5—Unknown transfer identifier.
7—No such user.
17—Load address in file was outside memory.
Messages 18 and 19 indicate a hardware failure on
the Switch 2000 TR. Consult your supplier for fur-
ther advice.
8—No response from the load server. Check that
you have entered the correct address for the
server where the software image file is stored
and that server is switched on.
18—Failed to erase Flash EPROM.
19—Flash EPROM programming failed.
Messages 20 through 22 show that system load is
underway or has successfully completed.
Messages 9 through 12 indicate that the file is cor-
rupted. It may have been corrupted during transmis-
sion. Attempt the download again.
20—System load pending.
21—System load active.
22—System load successful.
9—No resources.
10—Record length mismatch.
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SCREEN ACCESS RIGHTS
B
The table in this appendix specifies which level of
users can view and usually edit (write). Access
rights allow users to view and/or edit the Switch
2000 TR VT100 management screens.
Screen
Accessible to . . .
Port Statistics (Error)
Monitor
Manager
Security
Unit Traffic
Monitor
Manager
Security
All access rights are read-and-write except where
noted as read-only.
Switch Database View
Unit Setup
Monitor
Manager
Security
Access Rights Table
Monitor read-only
Manager
Security
Screen
Accessible to . . .
Port Setup
Monitor read-only
Manager
Security
Logon
Monitor
Manager
Security
Remote Poll
Manager
Security
Main Menu
Monitor
Manager
Security
Security Menu
Monitor
Manager
Security
Switch 2000 TR Management
Port Statistics
Monitor
Manager
Security
Create User
Delete User
Local Security
Change User
Security
Security
Security
Monitor
Manager
Security
Monitor
Manager
Security
Port Statistics (Traffic)
Monitor
Manager
Security
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B-2
APPENDIX B: SCREEN ACCESS RIGHTS
Screen
Accessible to . . .
Status
Monitor
Manager
Security
Fault Log
Monitor
Manager
Security
Setup
Monitor read-only
Manager
Security
Serial Port Setup
Trap Setup
Monitor read-only
Manager
Security
Monitor read-only
Manager
Security
Software Upgrade
Initialize
Security
Security
Reset
Manager
Security
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SERIAL PORT CABLE PIN-OUTS
C
■ SuperStack II Switch 2000 TR ATM OC-3 Module
Null Modem Cable
User Guide (Part Number #99041)
■ SuperStack II Switch 2000 TR FDDI Module User
9 pin to RS-232 25 pin. Pin numbers that are under-
lined are different. All other pin designations are
straight through.
Guide (Part Number #99048)
■ SuperStack II Switch 2000 TR TR-in-FE Module
User Guide (Part Number #99045)
Table 0-1 Null Modem Serial Cable Pin Outs
DB9 Female
DB9 Female
1
2
3
4
5
6
7
8
9
1
3
2
4
5
6
7
8
9
Cabling for Module Options
If you have an ATM, FDDI, or TR-in-FE module, see
the following manuals for special cabling specifica-
tions:
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C-2
APPENDIX C: SERIAL PORT CABLE PIN-OUTS
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TROUBLESHOOTING
D
The SNMP manager cannot access the device:
Troubleshooting Procedures
Check that the device's IP address, subnet mask,
and default router are correctly configured, and
that the device has been reset. Check that the
device's IP address is correctly recorded by the SNMP
manager.
This appendix lists potential problems you might
see when managing the Switch 2000 TR and
includes suggested actions to take. If you experience
a problem not listed here or that you cannot solve,
please contact your local technical support represen-
tative.
Refer to "Setting Up the VT100 Console" in
Chapter 3.
The initial Main Banner screen does not dis-
play:
The Telnet workstation cannot access the
device:
Check that your terminal or terminal emulator is
correctly configured to operate as a VT100 terminal.
Check that the device's IP address, subnet mask and
default router are correctly configured, and that the
device has been reset.
For serial port access, try pressing [Return] several
times before the Main Banner appears.
Check the settings on your terminal or emulator.
Be sure that you enter the IP address correctly
when invoking the Telnet facility.
Refer to "Setting Up the VT100 Console" in
Chapter 3.
Refer to "Setting Up the VT100 Console" in
Chapter 3.
Screens are incorrectly displayed:
Check that your terminal or terminal emulator is
correctly configured to operate as a VT100 terminal.
Traps are not received by the SNMP manager:
Check that the SNMP manager's IP address and the
community string are correctly configured.
Check the settings on your terminal or emulator.
Refer to "Setting Up the VT100 Console" in
Chapter 3.
Refer to "Setting Up the VT100 Console" in
Chapter 3.
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D-2
APPENDIX D: TROUBLESHOOTING
no longer access the device:
If Power LED is Yellow. . .
Unit failed self-test. Return to supplier.
If port fails to join ring . . .
Check that Remote Telnet access or Commu-
nity-SNMP access is enabled.
Check ring speed and cable. Check personality of
port.
Check that the port through which you are access-
ing the device has not been disabled, see "Port
Configuration" in Chapter 4. If it is enabled, check
the connections and network cabling at the port.
If server fails to attach to ports 1 through 4. . .
Check personality and cable connection.
Try accessing the device through a different port. If
you can now access the device, a problem with the
original port is indicated. Re-examine the connec-
tions and cabling.
If Source Route traffic is not forwarded...
Check Bridge Type, Ring Number initialized and
matches other bridges on ring. Make sure
ring/bridge/ring numbers are unique.
A network problem can prevent you from accessing
the device over the network. Try accessing the
device through the serial port. Refer to "Setting Up
the VT100 Console" in Chapter 3.
Broadcast storms. . .
Check to see if Spanning Tree is enabled. If yes,
make sure the type and address match the rest of
the network.
You forget your password and cannot log in:
If you are not one of the default users (monitor,
manager or security), another user having security
access level can log in, delete your user name, and
create a new user name for you, with a new pass-
word.
If Transparent traffic not forwarded. . .
Check Bridge Type and verify if it is Source Route
Transparent or Transparent.
Another user having ‘security' access level can log in
and initialize the device. This action returns all con-
figuration information, including passwords, to the
factory default values.
If no one user knows a password for a security
level user, contact your supplier.
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SWITCH 2000 TR
TECHNICAL SPECIFICATIONS
E
Physical Dimensions
Height: 2.75 inches (7.0 cm) x Width: 17.25 inches (44cm) x Depth 12 inches (30.5 cm)
Weight: 4.4kg (9.7lbs)
Environmental Requirements
Operating Temperature
Operating Humidity
Safety
32˚ to 120˚F (0˚ to 50˚ C)
10 to 95% relative humidity, non-condensing
Agency Certifications
AC Protection
UL 1950, EN60950 (TUV), CSA 22.2 No. 950
5A Time Delay Fuse
Electromagnetic Emissions
(Agency Certification)
EN55022 Class A, FCC Part 15 Class A
EN50082-1 (IEC801 Parts 2-5)
Heat Dissipation
Power Supply
100 watts maximum (341 BTU/hour maximum)
AC Line Frequency
Input Voltage Options
Current Rating
50/60 Hz
100-120/200-240 VAC
100 VAC at 3 amps (maximum)/200 VAC at 2 amps (maximum)
Standards Supported
SNMP
Terminal Emulation
■ telnet (RFC 854)
Protocols Used for Administration
■ UDP (RFC 768)
■ SNMP protocol (RFC 1157)
■ MIB-II (RFC 1213)
■ Bridge MIB (RFC 1493)
■ Source Route Bridge MIB (RFC 1525)
■ RMON MIB (RFC 1271)
■ Token Ring Extension to RMON MIB (RFC 1513)
■ BootP (RFC 951)
■ IP (RFC 791)
■ ICMP (RFC 792)
■ TCP (RFC 793)
■ ARP (RFC 826)
■ TFTP (RFC 783)
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E-2
APPENDIX E: SWITCH 2000 TR TECHNICAL SPECIFICATIONS
Specifications for Module Options
If you have an ATM, FDDI, or TR-in-FE module, see
the following manuals for technical specifications:
■ SuperStack II Switch 2000 TR ATM OC-3 Module
User Guide (Part Number #99041)
■ SuperStack II Switch 2000 TR FDDI Module User
Guide (Part Number #99048)
■ SuperStack II Switch 2000 TR TR-in-FE Module
User Guide (Part Number #99045)
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TECHNICAL SUPPORT
F
3Com provides easy access to technical support infor-
mation through a variety of services. This appendix
describes these services.
and support, news about the company,
Net Age® Magazine, and more.
3Com Bulletin Board Service
Information contained in this appendix is correct at
time of publication. For the very latest, we recom-
mend that you access 3Com Corporation’s World
Wide Web site.
3ComBBS contains patches, software, and drivers for
all 3Com products, as well as technical articles. This
service is available through analog modem or digital
modem (ISDN) 24 hours a day, 7 days a week.
Access by Analog Modem
Online Technical Services
To reach the service by modem, set your modem to
8 data bits, no parity, and 1 stop bit. Call the
telephone number nearest you:
3Com offers worldwide product support 24 hours a
day, 7 days a week, through the following online
systems:
■ World Wide Web site
Country
Australia
Brazil
Data Rate
Telephone Number
61 2 9955 2073
55 11 547 9666
33 1 6986 6954
4989 62732 188
852 2537 5608
39 2 27300680
81 3 3345 7266
52 5 520 7853
86 10 684 92351
65 534 5693
up to 14400 bps
up to 14400 bps
up to 14400 bps
up to 28800 bps
up to 14400 bps
up to 14400 bps
up to 14400 bps
up to 28800 bps
up to 14400 bps
up to 14400 bps
■ 3Com Bulletin Board Service (3ComBBS)
■ 3ComFactsSM automated fax service
■ 3ComForum on CompuServe online service
France
Germany
Hong Kong
Italy (fee required)
Japan
World Wide Web Site
Access the latest networking information on 3Com
Corporation’s World Wide Web site by entering our
URL into your Internet browser:
Mexico
P.R. of China
Singapore
(continued)
http://www.3com.com/
This service features the latest information about
3Com solutions and technologies, customer service
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F-2
APPENDIX F: TECHNICAL SUPPORT
Local access numbers are available within the follow-
ing countries:
Country
Data Rate
Telephone Number
886 2 377 5840
44 1442 438278
1 408 980 8204
Taiwan, R.O.C.
U.K.
up to 14400 bps
up to 28800 bps
up to 28800 bps
Country
Australia
Belgium
Telephone Number
1800 678 515
0800 71279
800 17319
U.S.A.
Access by Digital Modem
Denmark
Finland
ISDN users can dial in to 3ComBBS using a digital
modem for fast access up to 56 Kbps. To access
3ComBBS using ISDN, use one of the following
numbers:
98 001 4444
05 90 81 58
0130 81 80 63
800 933 486
1678 99085
1800 801 777
06 0228049
0800 446 398
800 11062
France
Germany
Hong Kong
Italy
408 654 2706 or 408 654 2703
Malaysia
Netherlands
New Zealand
Norway
3ComFacts Automated Fax Service
3Com Corporation’s interactive fax service,
3ComFacts, provides data sheets, technical articles,
diagrams, and troubleshooting instructions on 3Com
products 24 hours a day, 7 days a week.
Portugal
Russia (Moscow only)
Singapore
Spain
0505 442 607
956 0815
Call 3ComFacts using your Touch-Tone telephone
using one of these international access numbers:
800 6161 463
900 964 445
020 792954
0800 626403
Country
U.K.
Telephone Number
44 1442 438279
1 408 727 7021
Sweden
U.K.
U.S.A.
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Support from Your Network Supplier
F-3
3ComForum on CompuServe Online Service
Support from 3Com
3ComForum contains patches, software, drivers, and
technical articles about all 3Com products, as well as
a messaging section for peer support. To use
If you are unable to receive support from your
network supplier, technical support contracts are
available from 3Com.
3ComForum, you need a CompuServe account.
Contact your local 3Com sales office to find your
authorized service provider using one of these
numbers:
To use 3ComForum:
1 Log on to your CompuServe account.
2 Type go threecom
Regional Sales Office
Telephone Number
3 Press [Return] to see the 3ComForum main menu.
3Com Corporation
P.O. Box 58145
5400 Bayfront Plaza
Santa Clara, California
95052-8145
800 NET 3Com or 1 408 764 5000
408 764 5001 (fax)
Support from Your Network Supplier
If additional assistance is required, contact your
network supplier. Many suppliers are authorized
3Com service partners who are qualified to provide a
variety of services, including network planning, instal-
lation, hardware maintenance, application training,
and support services.
U.S.A.
3Com Asia Limited
Australia
61 2 9937 5000 (Sydney)
61 3 9866 8022 (Melbourne)
852 2501 1111
91 11 644 3974
62 21 572 2088
81 6 536 3303 (Osaka)
81 3 3345 7251 (Tokyo)
82 2 319 4711
Hong Kong
India
Indonesia
Japan
When you contact your network supplier for assis-
tance, have the following information ready:
Korea
Malaysia
60 3 732 7910
64 9 366 9138
632 892 4476
8610 68492568 (Beijing)
86 21 63501581 (Shanghai)
65 538 9368
886 2 377 5850
662 231 8151 5
■ A list of system hardware and software, including
New Zealand
Philippines
P.R. of China
revision levels
■ Diagnostic error messages
Singapore
Taiwan, R.O.C.
Thailand
■ Details about recent configuration changes, if
applicable
3Com Benelux B.V.
Belgium
Netherlands
If you are unable to contact your network supplier,
see the following section on how to contact 3Com.
32 2 725 0202
31 30 6029700
(continued)
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F-4
APPENDIX F: TECHNICAL SUPPORT
Regional Sales Office
Telephone Number
Regional Sales Office
Telephone Number
3Com Canada
Calgary
Edmonton
Montreal
Ottawa
Toronto
Vancouver
3Com Nordic AB
Denmark
Finland
Norway
Sweden
403 265 3266
403 423 3266
514 683 3266
1 613 566 7055
416 498 3266
604 434 3266
45 39 27 85 00
358 0 435 420 67
47 22 58 47 00
46 8 632 56 00
3Com Russia
007 095 258 09 40
27 11 807 4397
3Com Southern Africa
3Com UK Ltd.
3Com France
33 1 69 86 68 00
44 131 240 2900 (Edinburgh)
44 161 873 7717 (Manchester)
44 162 889 7000 (Marlow)
3Com GmbH
Austria
Czech Republic/Slovak Republic 420 2 21845 800
43 1 513 4323
Germany
(Central European HQ)
Hungary
49 30 34 98790 (Berlin)
49 89 627320 (Munich)
36 1 250 83 41
Returning Products for Repair
Poland
Switzerland
48 22 6451351
41 31 996 14 14
Before you send a product directly to 3Com for repair,
you must first obtain a Return Materials Authorization
(RMA) number. Products sent to 3Com without RMA
numbers will be returned to the sender unopened, at
the sender’s expense.
3Com Iberia
Portugal
Spain
351 1 3404501
34 1 383 17 00
3Com Ireland
353 1 820 7077
3Com Latin America
U.S. Headquarters
Northern Latin America
Argentina
Brazil
Chile
Colombia
Mexico
Peru
Venezuela
To obtain an RMA number, call or fax:
408 326 2093
305 261 3266 (Miami, Florida)
541 312 3266
55 11 5181 0869
562 633 8935
571 629 4110
52 5 520 7841/7847
51 1 221 5399
58 2 953 8122
Country
Telephone Number
Fax Number
U.S.A. and Canada
1 800 876 3266,
option 2
408 764 7120
Latin America
1 408 326 2927
44 1442 438125
408 764 7120
Europe, South Africa,
and Middle East
44 1442 435822
3Com Mediterraneo
Italy
39 2 253011 (Milan)
39 6 5279941 (Rome)
Elsewhere
1 408 326 2926
1 408 764 7120
3Com Middle East
971 4 349049
08/04/97
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1
bulletin board service F-1
INDEX
E
Editing Users, access database 4-18
Error Frames, description of 6-4
C
Numbers
Cascade Connections, stack configuration 3-3
cautions in text
3Com Bulletin Board Service (3ComBBS) F-1
3Com sales offices F-3
F
defined
2
Factory Defaults, resetting A-3
Fault Log 6-8
CompuServe F-3
Configuration Guidelines
topology rules 2-3
3ComFacts F-2
3ComForum F-3
Area 6-8
Fault Number 6-8
Time (seconds) 6-8
fax service. See 3ComFacts
Forward Delay, Spanning Tree 4-5
Forwarding Modes
Dynamic Cut-thru 1-17
Store-and-Forward 1-17
Forwarding, description of 6-3
Frames Forwarded, description of 6-4
Front Panel
components 1-6
Front Panel LEDs
description of 1-7
Fuse, replacing 2-3
conventions in text
A
defined
1
Administrative Settings
CREATE NEW USER 4-15
DELETE USERS 4-15
EDIT USER 4-16
Current Utilization, description of 6-4
Cut-thru, setting 4-8
LOCAL SECURITY 4-15
ATM networks
extending VLANs into 7-4
Auto 3-18
D
Database 4-19
adding entries 4-21
creating new users 4-17
deleting users 4-17
editing users 4-18
entry methods 4-19
finding entries 4-21
Default Users, management console 3-8
Default VLAN 4-13, 7-3
Auto Logout, description of 3-18
B
backbone port 4-12, 7-4
specifying 4-13
H
BootP Client 4-12
BOOTP, setting up 3-16
Bridge Configuration
High-speed Cascade Connectors
description of 1-14
Device Defaults
description of 2-6
Device Defaults, description of
Bridge 2-7
Port 2-6
Stack 2-7
Unit 2-6
Workgroup 2-7
dimensions E-1
Disabled, description of 6-3
Dynamic Cut-thru
setting
High-speed Cascade Interface
description of 1-2
High-speed Migration, illustration of 1-6
Source Routing Transparent (VT100) 4-3
Bridge Configuration (LCD Console)
Bridge Configuration 5-2
Port Configuration 5-3
Unit Configuration 5-1
Bridge Configuration (VT100) 4-3
Source Route 4-4
Source Routing Bridging 4-4
Transparent Bridging 4-4
Bridge Hello Time, Spanning Tree 4-5
Bridge Max Age, Spanning Tree 4-5
Broadcast Frame Bandwidth, description
of 6-4
I
Increased bandwidth, benefits of 1-1
IP Addresses
Managing Over The Network 3-4
Operating IP in a Closed Network 3-4
Setup 3-15
definition of 4-8
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2
notice conventions
1
Disabled 6-3
Forwarding 6-3
Learning 6-3
Listening 6-3
L
LCD Console 3-15
LCD Display Buttons
description of 1-7
Learning, description of 6-3
Link State
O
online technical services F-1
Port ID 6-3
Unit ID 6-3
Port Statistics (Traffic) 6-4
Abort Frames 6-5
Broadcasts Received 6-5
Cut-thrus Received 6-5
Errors 6-5
Frame Size Analysis 6-5
Frames Forwarded 6-5
Frames Received 6-4
Frames Transmitted 6-4
Line Errors 6-5
P
viewing
PING
LCD Console 5-3
Listening, definition of 6-3
Local Security
Remote Poll 6-9
Port 2-6
port
backbone 4-12, 4-13
Port Bridge Fields 4-10
Attached LAN ID 4-10
Max Route-Desc 4-10
Path Cost 4-10
Priority 4-10
STE Mode 4-10
Community SNMP 4-16
Manager 4-16
Monitor 4-16
Remote Telnet 4-16
Secure Monitor 4-16
Security 4-16
Serial Port 4-16
Setting 4-16
Specialist 4-16
Lost Frames 6-5
Multicasts Received 6-4
Octets Received 6-5
Octets Transmitted 6-5
Port ID 6-4
Port Statistics, viewing 6-3
Power Socket, description of 1-9
Power Supply and Fuse, description of 2-3
Port Configuration
Broadcast Storm Control
Falling Action 4-9
Falling Threshold% 4-9
Rising Action 4-9
Cut-thru Mode (VT100) 4-8
Forwarding Mode (VT100) 4-8
Port Admin. State (VT100) 4-6
Port Priorities (VT100), Internal Priority 4-7
Ports(VT100) 4-6
Port Parameters
Port ID (LCD) 5-3
Port Personality (LCD) 5-5
Port State (LCD) 5-4
Speed Mode (LCD) 5-4
Port Personality, setting
LCD Console 5-5
Locally Admin Address, management set
up 3-11
M
Management Prerequisites, initial set up 3-5
Locally Admin. Address 3-11
Managing Over The Network 3-4
Spanning Tree 4-5
R
Rack Mounting, instructions 2-5
Rear Panel, description of components 1-8
Redundant Power System
connecting 2-6
N
Network management, application of 1-2
Network segmentation, benefits of 1-1
network supplier support F-3
New Users
description of 1-9
related publications
2
release notes
Remote Poll
PING 6-9
1
Access Level 4-17
Community String 4-17
Password 4-17
Port Statistics 6-3
Broadcast Frame Bandwidth 6-4
Current Utilization 6-4
Error Frames 6-4
Frames Forwarded 6-4
Link State 6-3
Reset Button, description of 1-9
Resetting the Switch 2000 TR
LCD Reset 3-21
Power Cycle Reset 3-22
Reset Button 3-22
User Name 4-17
New Users, creating 4-17
notes in text
defined
2
Blocking 6-3
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3
Reset Button Reset 3-22
VT100 Reset 3-21
returning products for repair F-4
RJ-45 Ports, description of 1-6
Roving Analysis, description of 1-3
Forward Delay 4-5
IBM Spanning Tree 1-16
Priority 4-5
T
Technical Specifications E-1
technical support
3Com URL F-1
bulletin board service F-1
CompuServe service F-3
network suppliers F-3
product repair F-4
Spanning Tree, description of 1-16
Stack Configuration 4-11
Setting sysName 4-12
setting Up the Stack 4-11
cascade connections 3-3
Stack Mounting, instructions 2-5
standards supported E-1
Status
S
Safety Information 2-1
Screen Access Rights B-1
screens
VLAN Setup 4-12
Serial Port
connecting to 2-6
setting
Token Ring Switching Concepts 1-14
Source Route Bridging 1-14
Source Route Transparent Bridging 1-16
Transparent Bridging 1-15
Boot Software Version 6-7
FAULT LOG 6-7
Traffic Statistics, description of 6-4
Troubleshooting D-1
Hardware Version 6-7
Last Reset Type 6-7
Number of Resets 6-7
System up time 6-7
Upgradeable Software Version 6-7
Status Messages, software download A-4
Status, device 6-7
Auto Config 4-23
Char Size 4-23
Connection Type 4-23
DCD Control 4-23
DSR Control 4-23
Flow Control 4-23
Parity 4-23
U
Unit Configuration
Option Slot 4-14
Port Capacity 4-14
Power Supply 4-14
Setting Up the Unit 4-14
Unit ID 4-14
Store &Forward
setting
Speed 4-23
definition of 4-8
Serial Port Cable
Pin-outs C-1
Stop Bit 4-23
Slide-in Option Slot, description of 1-2
SNMP Traps
SuperStack™ II Switch 2000 TR
description of 1-1
initializing 4-24
size E-1
Stack configuration 3-3
weight E-1
Switch Database
Unit Name 4-14
Unit Defaults
Unit Statistics 6-2
Broadcasts 6-2
Clear Screen Counters 6-2
Filtered 6-2
setting 4-21
Community String 4-22
IP Address 4-22
Throttle 4-22
configuring 4-20
Forwarded 6-2
Received 6-2
Transmitted 6-2
viewing 6-2
Database Entries 4-20
Ageing Entries 4-19
Permanent Entries 4-19
DELETE 4-21
FIND 4-20
INSERT 4-21
MAC Address 4-20
Port Number 4-20
Port/MAC Address 4-20
REFRESH 4-21
Software Image, downloading new A-3
Software Upgrade Utility, description of A-1
Software, upgrading 3-19
Source Routing, prerequisites 3-6
Spanning Tree
802.1d Spanning Tree 1-16
Bridge Hello Time 4-5
Bridge Max Age 4-5
definition of 4-5
URL F-1
Users, changing
Community String 4-18
Confirm Password 4-18
New Password 4-18
Old Password 4-18
User Name 4-18
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4
V
Virtual LAN Trunks. See VLTs
VLAN Setup screen 4-12
VLAN Support, description of 1-2
VLANs
assigning ports 4-13
Default 4-13, 7-3
extending into an ATM network 7-4
using Non-routable protocols 7-4
using unique MAC addresses 7-4
VLTs 7-4
VLTs 7-4
VT100 Console
Button 3-7
Choice Field 3-6
Correcting Text Entries 3-8
Entry Field 3-7
Keyboard Shortcuts 3-7
List Boxes 3-7
Menu Map 3-9
VT100 Management Interface
Via an IP Network Connection 3-2
Via the Serial Port 3-2
VT100 Management Interface, description
of 3-2
VT100 Terminal, connecting a 2-6
W
Wall Mounting, instructions 2-5
warnings in text
defined
2
Why 1-14
Work Group ID
Management Setup Fields 3-12
World Wide Web (WWW) F-1
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defective product, accompanied by a copy of the dated proof of purchase, to the 3Com
Corporate Service Center or to an Authorized 3Com Service Center during the
applicable warranty period. Standard warranty service for software products may be
obtained by telephoning 3Com’s Corporate Service Center or an Authorized 3Com
Service Center, within the warranty period. Products returned to the 3Com Corporate
Service Center must be preauthorized by 3Com with a Return Material Authorization
(RMA) number marked on the outside of the package, and sent prepaid, insured, and
packaged appropriately for safe shipment. The repaired or replaced item will be shipped
to Customer, at the expense of 3Com, not later than thirty (30) days after receipt of the
defective product by 3Com.
3Com Corporation LIMITED WARRANTY
The duration of the warranty for the SuperStack II Switch 2000 TR, is n years.
HARDWARE
3Com warrants its hardware products to be free from defects in workmanship and
materials, under normal use and service, for the following lengths of time from the date
of purchase from 3Com or its Authorized Reseller:
Network interface cards
Lifetime
1 year
WARRANTIES EXCLUSIVE
Other hardware products (unless otherwise specified in the warranty
statement above)
IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S
SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT,
OR REFUND OF THE PURCHASE PRICE PAID, AT THE OPTION OF 3COM. TO THE FULL
EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE
EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS,
EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR
OTHERWISE, INCLUDING WARRANTIES, TERMS, OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND SATISFACTORY
QUALITY. 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO
ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE,
INSTALLATION, MAINTENANCE, OR USE OF ITS PRODUCTS.
Spare parts and spares kits
90 days
If a product does not operate as warranted above during the applicable warranty
period, 3Com shall, at its option and expense, repair the defective product or part,
deliver to Customer an equivalent product or part to replace the defective item, or
refund to Customer the purchase price paid for the defective product. All products that
are replaced will become the property of 3Com. Replacement products may be new or
reconditioned. Any replaced or repaired product or part has a ninety (90) day warranty
or the remainder of the initial warranty period, whichever is longer.
3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND
EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT
EXIST OR WAS CAUSED BY CUSTOMER’S OR ANY THIRD PERSON’S MISUSE, NEGLECT,
IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR OR
MODIFY, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY
ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.
3Com shall not be responsible for any software, firmware, information, or memory data
of Customer contained in, stored on, or integrated with any products returned to 3Com
for repair, whether under warranty or not.
SOFTWARE
LIMITATION OF LIABILITY
3Com warrants that the software programs licensed from it will perform in substantial
conformance to the program specifications therefor for a period of ninety (90) days
from the date of purchase from 3Com or its Authorized Reseller. 3Com warrants the
media containing software against failure during the warranty period. No updates are
provided. The sole obligation of 3Com with respect to this express warranty shall be (at
the discretion of 3Com) to refund the purchase price paid by Customer for any defective
software products, or to replace any defective media with software which substantially
conforms to applicable 3Com published specifications. Customer assumes responsibility
for the selection of the appropriate applications program and associated reference
materials. 3Com makes no warranty or representation that its software products will
work in combination with any hardware or applications software products provided by
third parties, that the operation of the software products will be uninterrupted or error
free, or that all defects in the software products will be corrected. For any third-party
products listed in the 3Com software product documentation or specifications as being
compatible, 3Com will make reasonable efforts to provide compatibility, except where
the noncompatibility is caused by a “bug” or defect in the third party’s product.
TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS
SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING
NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE
DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR PROFITS, LOSS OF BUSINESS,
LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN
CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE,
FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF 3COM OR ITS AUTHORIZED
RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND LIMITS ITS
LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT
THE OPTION OF 3COM. THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE
AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.
GOVERNING LAW
This Limited Warranty shall be governed by the laws of the State of California, U.S.A.
Some countries, states, or provinces do not allow the exclusion or limitation of liability
of implied warranties or the limitation of incidental or consequential damages for
certain products supplied to consumers or the limitation for personal injury, so the
above limitations and exclusions may be limited in their application to you. This
STANDARD WARRANTY SERVICE
Standard warranty service for hardware products may be obtained by delivering the
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