Cabletron Systems Switch TRXI 22A User Manual

TRXI-22A, TRXI-24A, TRXI-42A,

AND TRXI-44A ACTIVE

TOKEN RING INTELLIGENT HUB

USER’S GUIDE

CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03867-0505

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NOTICE

F CC NOTICE

This device complies with Part 15 of the FCC rules. Operation is subject to the following

two conditions: (1) this device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired

operation.

NOTE: This equipment has been tested and found to comply with the limits for a Class

A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to

provide reasonable protection against harmful interference when the equipment is

operated in a commercial environment. This equipment uses, generates, and can radiate

radio frequency energy and if not installed in accordance with the operator’s manual,

may cause harmful interference to radio communications. Operation of this equipment

in a residential area is likely to cause interference in which case the user will be required

to correct the interference at his own expense.

WARNING: Changes or modifications made to this device which are not expressly

approved by the party responsible for compliance could void the user’s authority to

operate the equipment.

DOC NOTICE

This digital apparatus does not exceed the Class A limits for radio noise emissions from

digital apparatus set out in the Radio Interference Regulations of the Canadian

Department of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les

limites applicables aux appareils numériques de la class A prescrites dans le Règlement

sur le brouillage radioélectrique édicté par le ministère des Communications du Canada.

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iii

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CONTENTS

TABLE OF CONTENTS

CHAP TER 1 INTRODUCTION

1.1 USING THIS MANUAL ............................................................ 1-1

1.2 GETTING HELP ........................................................................ 1-2

1.3 TRXI ACTIVE CONCENTRATOR OVERVIEW...................... 1-2

1.4 TRXI FEATURES ...................................................................... 1-3

1.5 REMOTE NETWORK MANAGEMENT CAPABILITIES ...... 1-6

1.6 RECOMMENDED READING................................................... 1-6

CHAP TER 2 REQUIREMENTS/SP ECIF ICATIONS

2.1 CABLE SPECIFICATIONS....................................................... 2-1

2.1.1 UTP Cable Specifications for the TRXI-22A/24A

Lobe Ports and TPIM-T2 .............................................. 2-2

2.1.2 STP Cable Specifications For The TRXI-42A/44A

Lobe Ports and TPIM-T1/T4......................................... 2-4

2.1.3 Mixed Cable Types ........................................................ 2-6

2.1.4 Multimode Fiber Optic Cable Specifications for

the TPIM-F2 .................................................................. 2-7

2.1.5 Single Mode Fiber Optic Cable Specifications for

the TPIM-F3 .................................................................. 2-8

2.2 CABLE RECOMMENDATIONS/TROUBLESHOOTING....... 2-9

2.3 COM 1/COM 2 PORT SPECIFICATIONS.............................. 2-11

2.4 TPIM SPECIFICATIONS........................................................ 2-12

2.5 GENERAL SPECIFICATIONS ............................................... 2-17

CHAP TER 3 INSTALLATION

3.1 UNPACKING THE TRXI .......................................................... 3-1

3.2 ATTACHING THE STRAIN RELIEF BRACKET ................... 3-1

3.3 INSTALLING THE TRXI .......................................................... 3-2

3.3.1 Rack Mounting the TRXI.............................................. 3-3

3.3.2 Wall Mounting the TRXI .............................................. 3-4

3.3.3 Free-Standing Installation ........................................... 3-5

3.4 SETTING THE RING SPEED SWITCH .................................. 3-6

3.5 SETTING THE NVRAM SWITCH ........................................... 3-7

3.6 CONNECTING THE TRXI TO THE POWER SOURCE......... 3-8

3.7 CONNECTING THE NETWORK LOBE PORT CABLING .... 3-8

3.8 INSTALLING THE TPIM RI/RO MODULES........................ 3-11

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CONTENTS

3.8.1 Setting the TPIM’s Phantom Switch and

RI/RO Switch ...............................................................3-12

3.8.2 Installing a TPIM to the TRXI....................................3-13

3.8.3 Connecting a Twisted Pair Segment to

the TPIM-T1 ................................................................3-14

3.8.4 Connecting a Twisted Pair Segment to

the TPIM-T2 or TPIM-T4............................................3-15

3.8.5 Connecting a Fiber Optic Link Segment to

the TPIM-F2 or TPIM-F3............................................3-16

3.9 FINISHING THE INSTALLATION........................................3-18

CHAP TER 4 TESTING AND TROUBLESHOOTING

4.1 CHECKING THE INSTALLATION..........................................4-1

4.2 USING LANVIEW LEDs ...........................................................4-2

4.3 USING THE LCD DISPLAY .....................................................4-3

4.3.1 Static System Messages ................................................4-4

4.3.2 Alarm Messages.............................................................4-5

4.3.3 Unsaved Initialization Messages..................................4-6

4.3.4 Saved System Messages ................................................4-7

CHAP TER 5 LOCAL MANAGEMENT

5.1 MANAGEMENT TERMINAL REQUIREMENTS ...................5-2

5.1.1 Attaching the Management Terminal..........................5-2

5.1.2 Setting the Management Terminal Setup

Parameters.....................................................................5-3

5.1.3 Modem Cable Configuration and Setup .......................5-4

5.2 ACCESSING LOCAL MANAGEMENT ....................................5-5

5.3 USING LOCAL MANAGEMENT..............................................5-6

5.3.1 The System Level Screen ..............................................5-8

5.3.2 The SNMP Community Names Screen ......................5-13

5.3.3 The SNMP Traps Screen .............................................5-15

5.3.4 The Ring Security Screen ............................................5-17

5.3.5 The Device Statistics Screen .......................................5-22

5.3.6 The Chassis Status View Screen ................................5-28

5.3.7 The Component Status View Screen ..........................5-30

5.3.8 The SNMP Tools Screen ..............................................5-31

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INTRODUCTION

CHAP TER 1

INTRODUCTION

Welcome to the Cabletron Systems TRXI-22A, TRXI-24A, TRXI-42A,

a n d TRXI-44A Active Tok en Rin g In telligen t Hu b User ’s Gu id e.

This manual provides installation instructions, network

requirements, and reference information for the TRXI Active

stand-alone concentrator. You should have an understanding of Token

Ring (IEEE 802.5) type data communications networks and their

physical layer components before installing the TRXI.

Note: This manual uses the term TRXI to describe the TRXI -22A, 24A,

42A, and 44A unless otherwise specified.

1.1 USING THIS MANUAL

The following summary provides information about each chapter in

this manual. Read through the summary to familiarize yourself with

this manual’s organization and content.

Chapter 1, In tr od u ction , outlines the contents of this manual and

describes features of the TRXI. It also lists recommended reading for

implementing a Token Ring network.

Chapter 2, Requ ir em en ts/Sp eciﬁca tion s, describes cabling

requirements, network guidelines, and TRXI operating speciﬁcations.

Chapter 3, In sta lla tion , contains instructions for installing your

TRXI and connecting it to the network using the various media types.

This chapter includes instructions for setting the Ring Speed Switch,

setting the NVRAM Switch, installing the TPIMs, and setting the

TPIM Phantom Switch.

Chapter 4, Testin g a n d Tr ou blesh ootin g, contains procedures for

testing the TRXI after installation, a description of the LANVIEW®

LEDs, and explains the front panel LCD display.

Chapter 5, Loca l Ma n a gem en t, describes how to access Local

Management. It also describes each of the Local Management screens

and the available commands.

Page 1-1

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INTRODUCTION

1.2 GETTING HELP

If you need additional support related to the Cabletron Systems TRXI,

or if you have any questions, comments, or suggestions concerning this

manual, contact Cabletron Systems Technical Support:

By phone ......................... (603) 332-9400

Monday-Friday; 8am - 8pm EST

By CompuServe ............ GO CTRON from any ! prompt

By Internet mail ............. support@ctron.com

1.3 TRXI ACTIVE CONCENTRATOR OVERVIEW

The TRXI stand-alone concentrator provides 12 or 24 RJ 45 active

Trunk Coupling Units (TCUs) for Shielded Twisted Pair (STP) or

Unshielded Twisted Pair (UTP) network lobe connections. The

TRXI-22A, 24A, 42A, and 44A are functionally identical with the

exception of the TCU lobe ports. Cabletron offers the following TRXI

conﬁgurations:

•

TRXI-22A, twelve active RJ 45 TCU lobe ports that support

category 3, 4, and 5 UTP cabling.

TRXI-24A, twenty-four active RJ 45 TCU lobe ports that

support category 3, 4, and 5 UTP cabling.

TRXI-42A, twelve active RJ 45 TCU lobe ports that support

IBM Type 1, 2, 6, and 9 STP cabling.

TRXI-44A, twenty-four active RJ 45 TCU lobe ports that

support IBM Type 1, 2, 6, and 9 STP cabling.

TRXI-24A TOKEN RING HUB WITH LANVIEW®

24 23 22 21 20 19

18 17 16 15 14 13

12 11 10

PWR

ACT

CPU 16 Mb/s

MGMT

DDIISSPPLLAAYY RESET

COM 2 COM 1

Figure 1-1. The TRXI-24A

Page 1-2

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INTRODUCTION

You can upgrade the TRXI-22A and TRXI-42A to twenty-four ports

using a twelve port upgrade kit available from Cabletron Systems

(Cabletron Part Number TRXI-24A-UGKIT or TRXI-44A-UGKIT).

The TRXI provides two additional ports for Ring In and Ring Out

(RI/RO) connections. These ports support Cabletron’s Token Ring Port

Interface Modules (TPIMs). TPIMs provide full repeater functionality.

They are not included with the TRXI, but can be ordered separately

from Cabletron. Table 1-1 lists each TPIM.

1.4 TRXI F EATURES

Active TCU P or ts

The active TCU ports regenerate, reshape and ﬁlter the incoming

signal permitting UTP lobe cable lengths of up to 100 m eter s and STP

lobe cable lengths up to 150 m eter s at 16 Mbps ring speed.

Ca ble Sign a l P ola r ity

Differential Manchester encoding is utilized for each of the

concentrator module TCU ports. This permits passing data regardless

of receive link polarity.

Note: If a reversed polarity condition is discovered, the segment should

be removed from the network and wired correctly (according to the

connector wiring shown in Chapter 2, Requirements / Speciﬁcations).

This will avoid the potential for future compatibility problems.

Sp eed F a u lt P r otection

If a station attempts to insert into the ring at a ring speed

(4 or 16 Mbps) different from what is set on the TRXI, that port is

automatically bypassed to prevent the ring from beaconing. The Lobe

Port Status LED blinks indicating the port with the speed fault is

bypassed.

Loca l Ma n a gem en t

Local Management provides the tools to manage the TRXI and all of

its attached segments. You access Local Management by connecting a

Digital Equipment Corporation VT™ 320 series terminal or a PC

using VT320 emulation software to the TRXI’s COM 1 port.

Page 1-3

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INTRODUCTION

Tok en Rin g P or t In ter fa ce Mod u les

TPIMs are optional features that let you expand your trunk

connections using different media types. TPIMs have embedded

repeaters and retime all data. Cabletron offers a variety of TPIMs for

trunk Ring In or Ring Out connections. Table 1-2 lists each TPIM.

Table 1-1. TPIMs

TP IM

Med ia Typ e

Con n ector

TPIM-T1

TPIM-T2

TPIM-T4

TPIM-F2

TPIM-F3

Shielded Twisted Pair

Unshielded Twisted Pair

Shielded Twisted Pair

Multimode Fiber Optic

Single mode Fiber Optic

DB9

RJ 45

Rin g Sp eed Sw itch

The Ring Speed Switch lets you select ring speeds of either 4 Mbps or

16 Mbps. The factory default setting is 16 Mbps.

F la sh EEP ROMs

The TRXI uses Flash EEPROMs that allow you to download new and

updated ﬁrmware using Cabletron System’s Remote LANVIEW/

Windows, version 2.3 or later or any device using BOOTP or TFTP

protocols.

LANVIEW LEDs

Cabletron Systems’ LANVIEW LED Status Monitoring and

Diagnostics System is a convenient troubleshooting tool that helps you

diagnose power failures, RI/RO status, cable faults, ring speed, link

problems, and network activity.

Ca bletr on ’s Distr ibu ted LAN Mon itor

Cabletron Systems’ Distributed LAN Monitor (DLM) is a software

option for the TRXI. DLM provides a method for locally polling and

monitoring devices on a local area network to minimize network

management trafﬁc on an enterprise, campus, or wide area network.

Page 1-4

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INTRODUCTION

RMON MIB Su p p or t

The TRXI supports the RMON MIB RFC 1271/1513 Token Ring

Extensions shown in Table 1-2.

Table 1-2. RMON MIB RFC 1271/1513 Support

Gr ou p

Su bgr ou p

Section

Statistics

rmon 1

Token Ring ML Stats Table

statistics 2

History

rmon 2

History Control Table

Token Ring ML History Table

Alarm Table

history 1

history 3

alarm 1

Alarm

rmon 3

Event

Event Table

event 1

rmon 9

Log Table

event 2

Token Ring

rmon 10

Ring Station Control Table

Ring Station Table

token ring 1

token ring 2

token ring 3

token ring 4

token ring 5

Ring Station Order Table

Ring Station Conﬁg Control Table

Ring Station Conﬁg Table

COM P or t Ap p lica tion s

The front panel COM 1 port is conﬁgured to support Local

Management applications. Future capabilities for TRXI’s serial ports

include an SNMP proxy for Uninterruptible Power Supplies (UPS),

the Serial Line Internet Protocol (SLIP), and Modem.

LCD a n d Reset Bu tton

The LCD provides status information about the TRXI such as power

up diagnostics, revision levels, serial numbers, and error alerts. The

TRXI also has a Reset Button to initialize the processor. Both the LCD

and the Reset Button are located on the front panel of the TRXI.

Page 1-5

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INTRODUCTION

1.5 REMOTE NETWORK MANAGEMENT CAP ABILITIES

You can control and manage the TRXI using any Simple Network

Management Protocol (SNMP) software. Cabletron Systems offers the

following remote management packages:

•

Cabletron Systems SPECTRUM

Cabletron Systems Remote LANVIEW /Windows™

Cabletron Systems Remote SPECTRUM Portable

Management Applications

The TRXI remote network management capabilities provide the

necessary management tools for the TRXI to operate at its full

capacity. Your ability to set up parameters with network management

ensures optimal performance of the TRXI.

1.6 RECOMMENDED READING

The following publications are recommended if more information is

required on implementing a token ring network.

Loca l Ar ea Netw or k s, Tok en Rin g Access Meth od , IEEE

Sta n d a r d 802.5 (1989)

Com m er cia l Bu ild in g Wir in g Sta n d a r d , EIA Sta n d a r d

P r op osa l No. 1907-B (if approved, to be published as EIA/TIA-568)

LAN Tr ou blesh ootin g Ha n d book , Mark Miller (1989, M&T

Publishing)

Page 1-6

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REQUIREMENTS/SP ECIF ICATIONS

CHAP TER 2

REQUIREMENTS/SP ECIF ICATIONS

This chapter describes cabling requirements, power requirements, and

operating speciﬁcations for the TRXI. Be sure that you read this

chapter before you install the TRXI. Your network must meet the

requirements and conditions speciﬁed in this chapter to obtain

satisfactory performance from this equipment. Failure to follow these

guidelines could result in poor network performance.

2.1 CABLE SP ECIF ICATIONS

The basic concept of a token ring is a set of Trunk Coupling Units

(TCUs) connected by trunk cabling. You can extend the trunk cabling

by installing TPIMs into the TRXI’s RI/RO ports. TPIMs have

embedded repeaters and provide trunk connections for UTP, STP,

Multimode Fiber, and Single Mode Fiber cabling.

You attach stations to the TCU lobe ports with lobe cabling. Figure 2-1

shows the various ports and cables.

Ring Out TPIM

TRXI-24A TOKEN RING HUB WITH LANVIEW®

TCU Lobe Ports

Lobe Cabling

Trunk Cabling

Token Ring Station

Ring In TPIM

TRXI-24A TOKEN RING HUB WITH LANVIEW®

Figure 2-1. TRXI Ports/Cables

Page 2-1

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REQUIREMENTS/SP ECIF ICATIONS

2.1.1 UTP Ca ble Sp eciﬁca tion s for th e TRXI-22A/24A Lobe

Por ts a n d TP IM-T2

The TRXI-22A and TRXI-24A lobe ports and the TPIM-T2 support

voice grade Unshielded Twisted Pair (UTP) cable, as described in

EIA/TIA TSB 568, and IBM Type 3 cable.

UTP consists of four pairs of 24 AWG solid wire for data or voice

communication and is typically used to wire cable runs within the

walls of buildings. In some installations, existing UTP building wiring

can be used for token ring cabling. UTP cable must conform to the

limits shown in Table 2-1.

Wa r n in g: DO NOT connect UTP cabling to any non-token ring network

conductors (telephone, etc.) or ground. If in doubt, test wiring before

using. Telephone Battery and Ringing voltages, used in UTP telephone

circuits, could present a shock hazard and can damage token ring

equipment when connected to token ring cabling.

The increased popularity and cost advantages of UTP cable have

driven reﬁnements to UTP cable design. As a result, better grades of

UTP cable, known as supergrade or level 4, are available that exhibit

improved transmission characteristics. These improved grades of UTP

can often be used to permit operation at 16 Mbps on longer lobe cables.

Atten u a tion a n d Im p ed a n ce

The values listed in Table 2-1 include the maximum attenuation of the

cables, connectors, patch panels, and reﬂection losses due to

impedance mismatches in the segment.

Table 2-1. UTP Voice Grade and Category 3 Specifications

F r equ en cy

Im p ed a n ce

Atten u a tion

1 MHz

4 MHz

10 MHz

16 MHz

100Ω ±15%

<26 dB/km (8 dB/1000 ft)

<56 dB/km (16 dB/1000 ft)

<98 dB/km (30 dB/1000 ft)

<131 dB/km (40 dB/1000 ft)

Page 2-2

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REQUIREMENTS/SP ECIF ICATIONS

Ma xim u m Lobe Len gth s

The lobe length is the physical length of the cable connecting a station

to its TCU port at the TRXI. Table 2-2 shows the maximum lobe

length, according to ring speed. The cable lengths listed in Table 2-2

are total lengths made up of UTP cable only.

Table 2-2. UTP Maximum Lobe Lengths

UTP Ca ble Typ e

Ma xim u m Lobe Len gth

4 Mbp s

16 Mbp s

Category 3

Category 4

Category 5

200 meters

(656 feet)

100 meters

(328 feet)

200 meters

(656 feet)

100 meters

(328 feet)

250 meters

(820 feet)

120 meters

(394 feet)

Typ e 3 Med ia F ilter s

To connect a UTP lobe segment from a TRXI-22A or TRXI-24A to a

station supporting STP cabling, you need a Type 3 Media Filter.

Cabletron Systems offers the following Type 3 Media Filters:

•

TRMF, RJ 45 (UTP) connector to 10-inch DB9 (STP) cable with

LANVIEW

TRMF -2, RJ 45 (UTP) connector to DB9 (STP) connector

Ma xim u m Nu m ber of Sta tion s

When you use UTP lobe cabling anywhere on the ring, the number of

stations is limited to 150 sta tion s at ring speeds of either

4 or 16 Mbps.

Page 2-3

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REQUIREMENTS/SP ECIF ICATIONS

2.1.2 STP Ca ble Sp eciﬁca tion s For Th e TRXI-42A/44A Lobe

Por ts a n d TP IM-T1/T4

The TRXI-42A and TRXI-44A lobe ports support IBM Type 1, 2, 6, and

9 STP cabling as described below:

•

IBM Typ e 1 - Two STP lengths of 22 AWG solid wire for data.

Used for the longest cable runs within the walls of buildings.

IBM Typ e 2 - Similar to Type 1 data cable, but having four

additional UTP lengths of 22 AWG solid wire carried outside of

the shield casing. Typically used for voice communication and

often used to wire cable runs within the walls of buildings.

•

IBM Typ e 6 - Two STP lengths of 26 AWG stranded wire for

data. This type is used in patch panels or to connect devices

to/from wall jacks. Attenuation for Type 6 cable is 3/2 x Type 1

cable (66 m of Type 6 =100 meters of Type 1).

IBM Typ e 9 - Similar to Type 1, but uses 26 AWG solid wire.

Attenuation for Type 9 cable is 3/2 x Type 1 cable

(66 m of Type 9 = 100 meters of Type 1).

Atten u a tion a n d Im p ed a n ce

The attenuation values shown in Table 2-3 include the attenuation of

the cables, connectors, patch panels, and reﬂection losses due to

impedance mismatches in the segment.

Table 2-3. STP Cable Specifications

F r equ en cy

Im p ed a n ce

Atten u a tion

Types 1 & 2

4 MHz

16 MHz

150Ω + 15%

<22 dB/km (6.7 db/1000 ft.)

<45 dB/km (13.7 db/1000 ft.)

Types 6 & 9

4 MHz

16 MHz

150Ω + 15%

<33 dB/km (10 db/1000 ft.)

<66 dB/km (20 db/1000 ft.)

Page 2-4

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REQUIREMENTS/SP ECIF ICATIONS

Ma xim u m Lobe Len gth s

The lobe length is the physical length of the cable connecting a station

to its TCU port at the TRXI. Table 2-4 shows the maximum lobe

length, according to ring speed. The cable lengths listed in Table 2-4

are total lengths made up of STP cable only.

Table 2-4. STP Maximum Lobe Lengths

STP Ca ble Typ e

Rin g Sp eed

4 Mbp s

16 Mbp s

IBM Types 1 & 2

300 meters

(984 feet)

150 meters

(492 feet)

IBM Types 6 & 9 (only

for station to wall jack

and patch panels)

30 meters

(99 feet)

30 meters

(99 feet)

Ma xim u m Tr u n k Len gth s

The maximum trunk cable length between the TRXI and another

active device is equal to the maximum drive distance as shown in

Table 2-5. When the neighboring token ring device is a passive device,

the combined length of twice the longest trunk cable plus the longest

lobe cable attached to the passive ring segment cannot exceed the

Maximum Drive Distance.

Table 2-5. STP Maximum Drive Distance

STP Ca ble Typ e

Rin g Sp eed

4 Mbp s

16 Mbp s

IBM Types 1 & 2

IBM Types 6 & 9

770 meters

(2525 feet)

346 meters

(1138 feet)

513 meters

(1683 feet)

230 meters

(755 feet)

Ma xim u m Nu m ber of Sta tion s

When you use STP lobe cabling everywhere on the ring, the TRXI can

support up to 250 sta tion s at ring speeds of either 4 or 16 Mbps.

Page 2-5

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REQUIREMENTS/SP ECIF ICATIONS

2.1.3 Mixed Ca ble Typ es

If you mix cable types in your installation, you must compensate for

the different cable attenuations. Type 6 and Type 9 cables can be run

for only 2/3 the distance of Type 1. This means:

10 meters (Type 1) ≈ 6.6 meters (Types 6, 9)

Exa m p le: Maximum Length for Mixed Cabling Installation

16 Mbps ring speed and 130 stations.

The building has 60 meters of Type 1 cable in the wall.

How much Type 6 cable is available to connect the repeater

TCU port to the patch panel and the station to the local

wall jack?

Type 6 can only go 2/3 the distance of Type 1.

Solu tion :

100 meters = maximum cable length if only Type 1 cable is used

[60 meters of Type 1] + [40 meters of Type 1] = max. length

[60 meters of Type 1] + [(.66) x (40 meters) of Type 6] = max. length

26.4 meters of Type 6 (for patch panel and wall jack

connections)

Page 2-6

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REQUIREMENTS/SP ECIF ICATIONS

2.1.4 Mu ltim od e Fiber Op tic Ca ble Sp eciﬁca tion s for th e

TP IM-F 2

Table 2-6 shows Multimode Fiber Optic Cable speciﬁcations for the

TPIM-F2.

Table 2-6. Multimode Fiber Optic Cable Specifications

Ca ble Typ e

Atten u a tion

Ma xim u m Dr ive Dista n ce

50/125 µm

62.5/125 µm

100/140 µm

13.0 dB or less The maximum allowable fiber op-

tic cable length is 2 km (2187.2

16.0 dB or less

yards). However, IEEE 802.5

specifications allow for a maxi-

mum of 1 km (1093.6 yards).

19.0 dB or less

Ma xim u m Tr u n k Len gth s

The maximum trunk cable length between the TRXI and another

active device is equal to the maximum drive distance as shown in

Table 2-6. When the neighboring token ring device is a passive device,

the combined length of twice the longest trunk cable plus the longest

lobe cable attached to the passive ring segment cannot exceed the

Maximum Drive Distance Trunk Length.

Atten u a tion

The ﬁber optic cable must be tested with a ﬁber optic attenuation test

set that is adjusted for an 850 nm wavelength. This test veriﬁes that

the signal loss in a cable is within an acceptable level. Table 2-6 shows

the attenuation for each Multimode cable type.

F iber Op tic Bu d get

When determining the maximum ﬁber optic cable length, the ﬁber

optic budget delay should be calculated and taken into consideration

before ﬁber optic cable runs are incorporated in any network design.

Fiber optic budget is the combination of the optical loss due to the

ﬁber optic cable, in-line splices, and ﬁber optic connectors.

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REQUIREMENTS/SP ECIF ICATIONS

2.1.5 Sin gle Mod e Fiber Op tic Ca ble Sp eciﬁca tion s for th e

TP IM-F 3

Table 2-7 shows Single Mode Fiber Optic Cable speciﬁcations for the

TPIM-F3.

Table 2-7. Single Mode Fiber Optic Cable Specifications

Ca ble Typ e

Atten u a tion

Ma xim u m Dr ive Dista n ce

8/125-12/125 µm 10.0 dB or less The max. allowable fiber optic

cable length is 2 km (2187.2

yards). However, IEEE 802.5

specs allow for a max. of 1 km

(1093.6 yards).

Ma xim u m Tr u n k Len gth s

The maximum trunk cable length between the TRXI and another

active device is equal to the Maximum Drive Distance as shown in

Table 2-7. When the neighboring token ring device is a passive device,

the combined length of twice the longest trunk cable plus the longest

lobe cable attached to the passive ring segment cannot exceed the

Maximum Drive Distance Trunk Length.

Atten u a tion

The ﬁber optic cable must be tested with a ﬁber optic attenuation test

set that is adjusted for a 1300 nm wavelength. This test veriﬁes that

the signal loss in a cable is within an acceptable level of 10 dB or less

for any given single mode ﬁber optic link.

F iber Op tic Bu d get

Fiber optic budget is the combination of the optical loss due to the

ﬁber optic cable, in-line splices, and ﬁber optic connectors. When

determining the maximum ﬁber optic cable length, the ﬁber optic

budget (total loss of 10.0 dB or less between stations) and total

network propagation delay should be calculated and considered before

ﬁber optic cable runs are incorporated in any network design.

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REQUIREMENTS/SP ECIF ICATIONS

2.2 CABLE RECOMMENDATIONS/TROUBLESHOOTING

The following sections describe common cable problems and

recommendations for correcting them.

Cr ossta lk

Crosstalk is interference caused by signal coupling between the

different cable pairs contained within a multi-pair cable bundle.

Multi-pair cables should not be used for UTP lobe cabling. UTP lobe

cabling should be dedicated to carrying token ring trafﬁc. Avoid

mixing token ring signals with other applications (voice, etc.) within

the same cable.

Noise

Noise can be caused by either crosstalk or externally induced

impulses. If noise induced errors are suspected, it may be necessary to

reroute cabling away from potential noise sources (motors, switching

equipment, ﬂuorescent lighting, high amperage equipment), or to

ensure that the electrical wiring in the area is properly wired and

grounded.

Tem p er a tu r e

The attenuation of PVC insulated cable varies signiﬁcantly with

temperature. Plenum-rated cables are strongly recommended at

temperatures greater than 40˚C to ensure that cable attenuation

remains within speciﬁcation. Check the cable manufacturer’s

speciﬁcations.

In addition to complying with the preceding cable speciﬁcations, the

following recommendations should be followed to minimize errors and

help to obtain optimum performance from your network:

•

UTP cabling should be free of splices, stubs or bridged taps.

No more than two punch-down blocks between TCU ports and

wall outlets.

•

Metal troughs, ducts, etc. carrying token ring signals should be

properly grounded.

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REQUIREMENTS/SP ECIF ICATIONS

•

Token ring signals should not be routed through copper cables

that exit a building or which are adjacent to cables either

exiting a building or exposed to lightning strikes and power

surges.

•

UTP cables that contain token ring signals should not be

simultaneously used for applications which may impress high

voltages (greater that 5 volts) with sharp rise or fall times,

since the noise coupling from such signals could directly cause

errors on the token ring network.

•

For single telecommunications closet rings, lobe lengths should

not exceed 100 meters or 22 to 24 AWG wire from the attaching

device and the TCU port.

When possible, use dedicated UTP cable for token ring signals.

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REQUIREMENTS/SP ECIF ICATIONS

2.3 COM 1/COM 2 P ORT SP ECIF ICATIONS

The RJ 45 COM 1 and COM 2 ports support Console, Modem, UPS,

and SLIP applications. A description of each COM port application is

listed below:

Note: Console is the only COM port application available at this time.

Modem, UPS, and SLIP applications will be available in future TRXI

releases.

TRXI-24A TOKEN RING HUB WITH LANVIEW®

DISPLAY RESET

COM 2

COM 1

Figure 2-2. COM 1/COM 2 Ports

Con sole

The COM 1 port, as default, supports access to a Local Management

Console. The console supports a Digital Equipment Corporation VT

320™ terminal or PC emulation of the VT 320 terminal.

Mod em

Both the COM 1 and COM 2 ports support access to Local

Management using a modem.

UP S

The COM 2 port supports an Uninterruptible Power Supply

(American Power Conversion only).

SLIP

The COM 1 and COM 2 ports support the Serial Line Internet

Protocol.

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REQUIREMENTS/SP ECIF ICATIONS

2.4 TP IM SP ECIF ICATIONS

TPIMs provide Ring In/Ring Out (RI/RO) connections that let you

extend your network using a variety of media. Each TPIM has an

embedded repeater that retimes all data.

The LNK (Link) LED on each TPIM provides the following

information:

•

Green - RI or RO active

Red (TPIM-T1/T2/T4 only) - No Link (Autowrapped)

Off - No Link (Wrapped or Disabled)

The following sections describe each TPIM.

TP IM-T1

The TPIM-T1 is a female DB9 connector that supports STP cabling.

Figure 2-3 shows TPIM-T1 pinouts for Ring Out and Ring In

applications.

LNK

TPIM-T1

RING IN

RING OUT

1. Receive +

2. Ground

1. Transmit +

2. Ground

3. +5V at 250 mA

4. Ground

3. +5V at 250 mA

4. Ground

5. Transmit -

6. Receive -

7. Ground

5. Receive -

6. Transmit -

7. Ground

8. Ground

9. Transmit +

9. Receive +

Figure 2-3. TPIM-T1 Pinouts

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REQUIREMENTS/SP ECIF ICATIONS

TP IM-T2

The TPIM-T2 is an RJ 45 connector that supports UTP cabling.

Figure 2-4 shows pinouts for Ring Out and Ring In applications.

1 2 3 4 5 6 7 8

LNK

TPIM-T2

RING IN

RING OUT

1. Not Used

2. Not Used

3. Receive -

4. Transmit +

5. Transmit -

6. Receive +

7. Not Used

8. Not Used

1. Not Used

2. Not Used

3. Transmit -

4. Receive +

5. Receive -

6. Transmit +

7. Not Used

8. Not Used

Figure 2-4. TPIM-T2 Pinouts

TP IM-T4

The TPIM-T4 is an RJ 45 connector that supports STP cabling.

Figure 2-5 shows pinouts for Ring Out and Ring In applications.

1 2 3 4 5 6 7 8

LNK

TPIM-T4

RING IN

RING OUT

1. Not Used

2. Not Used

3. Receive -

4. Transmit +

5. Transmit -

6. Receive +

7. Not Used

8. Not Used

1. Not Used

2. Not Used

3. Transmit -

4. Receive +

5. Receive -

6. Transmit +

7. Not Used

8. Not Used

Figure 2-5. TPIM-T4 Pinouts

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REQUIREMENTS/SP ECIF ICATIONS

TP IM-F 2

The TPIM-F2 shown in Figure 2-6 is an ST connector that supports

Multimode ﬁber Optic cabling.

LNK

TPIM-F2

Figure 2-6. The TPIM-F2

Note: The transmitter power levels and receive sensitivity levels given

are Peak Power Levels after optical overshoot. A Peak Power Meter must

be used to correctly compare the values given to those measured on any

particular port. If Power Levels are being measured with an Average

Power Meter, then 3 dBm must be added to the measurement to correctly

compare those measured values to the values listed (i.e. -30.5 dBm

peak=-33.5 dBm average).

P a r a m eter

Typ ica l

Va lu e

Wor st

Ca se

Wor st Ca se Typ ica l

Bu d get

Receive

Sensitivity:

-30.5 dBm -28.0 dBm

—

Peak Input

Power:

-7.6 dBm -8.2 dBm

—

Transmitter Power

50/125 µm

fiber:

-13.0 dBm -15.0 dBm 13.0 dB

-10.0 dBm -12.0 dBm 16.0 dB

-7.0 dBm -9.0 dBm 19.0 dB

17.5 dB

20.5 dB

23.5 dB

62.5/125 µm

fiber:

100/140 µm

fiber:

-10

Error Rate:

Better than 10

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REQUIREMENTS/SP ECIF ICATIONS

TP IM-F 3

The TPIM-F3 shown in Figure 2-7 is an ST connector that supports

Single Mode ﬁber Optic cabling.

LNK

TPIM-F3

Figure 2-7. The TPIM-F3

Note: Transmitter Power decreases as temperatures rise and increases

as temperatures fall. Use the Output Power Coefficient to calculate

increased or decreased power output for your operating environment.

For example, the typical power output at 25°C is -16.4 dBm. For a 4°C

temperature increase, multiply the typical coefficient

(-0.15 dBm) by four and add the result to typical output power

(4 x -0.15 dBm + -16.4 = -17.0).

Maximum Sensitivity (-36.0)

Receive

Sensitivity

Typical Sensitivity (-31.0)

Minimum Sensitivity (-30.0)

Minimum Receive Input (-9.72)

Typical Receive Input (-7.5)

Maximum

Receive

Input Power

Maximum Receive Input (-6.99)

Maximum Transmit Power (-12.0)

Typical Transmit Power (-15.5)

Transmitter Power*

(At 25°C into

8.3/125µm fiber)

Minimum Transmit Power (-21.0)

-40

-35

-30

-25

-20

-15

-10

-5

dBm

Less Power

More Power

* Transmit Power

Typical Power

Minimum Power

Maximum Power

Coefficient

(See Note Below)

-0.15dBm/°C

-0.12 dBm/°C

-0.18 dBm/°C

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REQUIREMENTS/SP ECIF ICATIONS

P a r a m eter

Typ ica l

Min im u m

Ma xim u m

Transmitter Peak

Wave Length

1300 nm

60 nm

1270 nm

1330 nm

100 nm

Spectral Width

Rise Time/

Fall Time

3.0 nsec

2.5 nsec

2.7 nsec

2.2 nsec

5.0 nsec

Duty Cycle

50.1%

49.6%

50.7%

Bit Error Rate:

Better than 10^-10

Note: The transmitter power levels given above are Peak Power Levels

after optical overshoot. You must use a Peak Power Meter to correctly

compare the values given above to those measured on any particular

port. If you are measuring power levels with an Average Power Meter,

add 3 dBm to the average power measurement to correctly compare the

average power values measured to the values listed above (i.e., -33.5

dBm average + 3 dB = -30.5 dBm peak).

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REQUIREMENTS/SP ECIF ICATIONS

2.5 GENERAL SP ECIF ICATIONS

The operating speciﬁcations for the TRXI are described in this section.

Cabletron Systems reserves the right to change these speciﬁcations at

any time without notice.

Data Buffer Memory (RAM):

Internal Processor:

Controller:

4 MB (Upgradeable)

Intel 80C960CA at 16 MHz

Texas Instruments TMS380

128 KB with battery back-up

128 KB

Static RAM:

EPROM:

FLASH MEMORY:

2 MB (Upgradeable)

P OWER SUP P LY REQUIREMENTS

Note: The TRXI has a universal power supply. This unit allows you to

use an input power from 85 to 264 VAC, 47-63 Hz.

The power supply has two outputs of +5 volts and +12 volts. The

maximum output power is 125 watts and the minimum efﬁciency is

65% under all conditions of line at full load. The minimum and

maximum load current from each output is shown below.

Ou tp u t

+5 Volts

+12 Volts

Min . Loa d

1.00 Amps

0.15 Amps

Ma x. Loa d

15 Amps

4 Amps

Ma x Pow er

75 Watts

48 Watts

ENVIRONMENTAL REQUIREMENTS

Operating Temperature:

Non-operating Temperature:

Operating Humidity:

+5° to +50°C

-30° to +90°C

5 to 95% (non-condensing)

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REQUIREMENTS/SP ECIF ICATIONS

SAF ETY

This unit meets the safety requirements of UL 1950, CSA C22.2

No. 950 and EN 60950; the EMI requirements of FCC Class A and

EN 55022 Class A; and the EMC requirements of EN 50082-1.

Wa r n in g: It is the responsibility of the person who sells the system to

which the TRXI will be a part to ensure that the total system meets

allowed limits of conducted and radiated emissions.

P HYSICAL

Dimensions:

Weight:

2.8H x 17.0W x 13.5D inches

(7.2H x 43.6W x 34.6D cm)

Unit:

7.95 pounds

Shipping:

11.95 pounds

SERVICE

MTBF

MTTR

>944,197 hours projected

<0.5 hour

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INSTALLATION

CHAP TER 3

INSTALLATION

This chapter outlines the procedure for installing a TRXI and

connecting it to a network. Be sure that your network meets the

guidelines and requirements outlined in Chapter 2, Requ ir em en ts/

Sp eciﬁca tion s, before installing the TRXI.

3.1 UNP ACKING THE TRXI

Unpack the TRXI as follows:

•

Remove the TRXI from the shipping box.

Slide the two foam end caps off the TRXI.

Remove the TRXI from the protective plastic bag and set it

aside to prevent damage.

•

Visually inspect the TRXI. If there are any signs of damage,

contact Cabletron Systems Technical Support immediately.

3.2 ATTACHING THE STRAIN RELIEF BRACKET

Attach the strain relief bracket to the front of the TRXI as follows:

1. Locate the strain relief bracket and four 8-32 x 3/8" screws from the

TRXI installation kit.

Ca u tion : Use of longer screws may cause damage to the unit or

electrical shock.

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INSTALLATION

2. Attach the strain relief bracket to the bottom of the TRXI as shown

in Figure 3-1.

TRXI-24A TOKEN RING HUB WITH LANVIEW®

Figure 3-1. Attaching the Strain Relief

3.3 INSTALLING THE TRXI

The TRXI can be rack mounted, wall mounted, or placed on any

horizontal surface. Select one of the following subsections and perform

the steps that are applicable for your installation. If you decide not to

install the TRXI in a 19-inch rack, the following requirements must be

met when selecting a location.

Note: Be sure that the location selected is within reach of the network

cabling.

•

An unrestricted free surface area at least 21 inches wide, 18

inches deep and 6 inches high is needed.

A single phase 85 to 264 Vac, 15A, grounded power receptacle

must be located within 7 feet of the site.

If a shelving unit is to be used, it must be able to support 30

pounds of static weight.

The temperature for the selected location must be maintained

between 5° and 50°C, and less than 10°C per hour temperature

change.

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INSTALLATION

3.3.1 Ra ck Mou n tin g th e TRXI

Refer to Figure 3-2 and perform these steps to install the TRXI in a

19-inch rack.

1. Remove four cover screws (two from each side) located along the

front edges of each side of the TRXI.

2. Using the four cover screws removed in step 1, attach the rack

mounting brackets to each end of the TRXI.

Wall/Rack Mounting

Brackets (2)

TRXI-24A TOKEN RING HUB WITH LANVIEW®

Screws (4)

Figure 3-2. Rack Mount Brackets Installation

3. With the mounting brackets installed, position the TRXI between

the vertical frame members of the 19-inch rack and fasten it

securely with the mounting screws (see Figure 3-3).

19-Inch Rack

TRXI-24A TOKEN RING HUB WITH LANVIEW®

Screws (4)

Figure 3-3. Installing the TRXI in the Rack

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INSTALLATION

3.3.2 Wa ll Mou n tin g th e TRXI

When you wall mount the TRXI, the cable connections must face

down. Perform the following steps to wall-mount the TRXI.

Note: 1/ 4-inch Molly screw anchors for wall mounting are not included

with the TRXI.

1. Use the supplied screws to attach the wall mounting brackets to

the bottom of the TRXI as shown in Figure 3-4. There are two

brackets, one for each side.

Molly Screw

Anchors

Molly Screws

Bracket Screws

Wall Mounting Bracket

Figure 3-4. Wall Mounting the TRXI

2. Select the wall location for the TRXI within 7 feet of a power outlet.

Wa r n in g: There is a potential SHOCK HAZARD if there is electrical

wiring within the wall that interferes with drilling for pilot holes. Select

a wall location where drilling pilot holes for the Molly screws will not

come in contact with electrical wiring in the wall.

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INSTALLATION

3. You will need a pencil for this step. With the wall mounting

brackets attached to the TRXI, position the TRXI against the wall

where it will be permanently mounted with the network port facing

down. Using a pencil, mark the wall location for the four pilot holes.

4. Set the TRXI aside and carefully drill four 1/4" pilot holes, one for

each of the Molly screw anchors and insert the four Molly screw

anchors into the holes just drilled.

5. Tighten each of the anchor screws until the anchor expands holding

the anchor firmly in the wall, then remove the screws completely.

6. Position the TRXI on the wall over the anchors and reinstall the

four anchor screws to attach the TRXI to the wall, as shown in

Figure 3-4. Tighten the four anchor screws.

3.3.3 Fr ee-Sta n d in g In sta lla tion

For a free-standing shelf or tabletop installation, locate the TRXI

within 7 feet of its power source and with an unrestricted free surface

area 21 inches wide, 18 inches deep and 6 inches high, as shown in

Figure 3-5.

21 IN.

18 IN.

TRXI-24A TOKEN RING HUB WITH LANVIEW®

6 IN.

7 FT.

Figure 3-5. Free-Standing Installation

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INSTALLATION

3.4 SETTING THE RING SP EED SWITCH

This section explains how to change the TRXI’s ring speed from the

factory default setting of 16 Mbps to 4 Mbps. To change the ring speed,

you need to set the switch located inside the TRXI as shown in

Figure 3-6. You can access the switch through the air vent with a

small screwdriver.

To change the ring speed:

1. Turn off the TRXI.

2. Place a small screwdriver through the TRXI’s air vent to access the

Ring Speed Switch.

3. Use the screwdriver to slide the switch to the desired setting as

shown in Figure 3-6.

4. Turn on the TRXI.

5. Check that the Ring Speed LED indicates the correct setting.

RING SPEED SWITCH SETTINGS

4 Mbps

16 Mbps

TRXI-24A TOKEN RING HUB WITH LANVIEW®

DISPLAY

Ring Speed LED Indicator

On = 16 Mbps

Off = 4 Mbps

Figure 3-6. The Ring Speed Switch

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INSTALLATION

3.5 SETTING THE NVRAM SWITCH

Figure 3-7 shows the location of the NVRAM Reset Switch. The TRXI

uses NVRAM (Non-Volatile Random Access Memory) to store user

entered parameters such as IP address and device name. The NVRAM

Reset Switch restores these parameters to the factory defaults.

You do not have to remove the chassis cover to access the NVRAM

switch.

NVRAM RESET

SWITCH

TRXI-24A TOKEN RING HUB WITH LANVIEW®

DISPLAY

Figure 3-7. NVRAM Reset Switch

To restore TRXI parameters to the factory defaults:

1. Change the state of this switch (i.e., move the switch from one

position to another).

2. Press the TRXI’s Reset button.

You can now use the factory default settings or re-enter your own

parameters. The TRXI stores these parameters in NVRAM during

normal operation and during power down, and they remain there until

you change the switch again.

Ca u tion : Do not change the state of the NVRAM switch unless you

intend to reset the TRXI user parameters to the factory default settings.

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INSTALLATION

3.6 CONNECTING THE TRXI TO THE P OWER SOURCE

Note: The TRXI has a universal power supply. This allows you to

connect the TRXI to power sources from 85 Vac to 264 Vac, 47-63 Hz.

To connect the TRXI to the power source, plug the power cord into a

grounded wall outlet. Turn on the power switch at the back panel of

the TRXI. Verify that the P WR LED is lit, indicating that the TRXI is

receiving power. After the TRXI runs a self test, the CP U LED blinks

green indicating normal operation. If the LED remains red, the

processor is faulty.

3.7 CONNECTING THE NETWORK LOBE P ORT CABLING

The TRXI-22A/24A network lobe ports consist of unshielded RJ 45

connectors that support UTP cabling. To connect a UTP segment from

the TRXI to a station supporting STP cabling, you need a Type 3

Media Filter available from Cabletron Systems (TRMF, TRMF-2).

The TRXI-42A/44A network lobe ports consist of shielded RJ 45

connectors that support STP cabling. Shielded patch cables that adapt

a shielded RJ 45 to a data connector (MIC) are available from

Cabletron Systems (PN 9372057-8). These adapter/patch cables let

you connect to an existing patch panel equipped with data connectors.

Figure 3-8 shows the TRXI’s network lobe port pinouts.

Device

Port

TRXI-22A/24A

TCU Port

RX-

TX+

TX-

RX+

RJ45 to RJ45

TX-

RX-

TX+

RX+ 6

TRXI-42A/44A

TCU Port

Data Connector

(MIC)

RX-

TX+

Green TX-

Orange RX+

Patch Panel/

Token Ring Station

RJ45 to MIC

TX-

Black RX-

RX+ 6

Red

TX+

Shield

Figure 3-8. Network Lobe Port Pinouts

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INSTALLATION

Figure 3-9 illustrates possible conﬁgurations for both the TRXI-24A

and TRXI-44A.

WALL

Punchdown

TRXI-24A

Block

TRXI-24

TOKEN RING HUB _WITH

LANVIEW®

Token Ring

Network Interface Card

Token Ring

Station

UTP

Lobe Cable

TRMF

Wall

Jack

STP to UTP

Type 3 Media Filter

OFFICE

WIRING CLOSET

WALL

TRXI-44A

TRXI-24

TOKEN RING HUB _WITH

LANVIEW®

MIC Data

Connector

Token Ring

Network Interface Card

Token Ring

Station

Patch

Panel

Wall

Jack

STP

Lobe Cable

OFFICE

WIRING CLOSET

Figure 3-9. Configuration Examples for TRXI-24A and TRXI-44A

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INSTALLATION

To attach a UTP or STP lobe segment to a TRXI network port:

1. Insert the RJ 45 connector from each twisted pair segment into the

desired RJ 45 network lobe port number on the TRXI as shown in

Figure 3-10.

LNK

TPIM-T4

LNK

TPIM-T4

Figure 3-10. TRXI Network Ports

2. The associated Port Status LED will light green when the station

boots up. If the LED is not lit, perform each of the following steps

until it is:

a. Check that the device at the other end of the twisted pair

segment is on and the network interface driver is initialized.

b. Verify that the RJ 45 connector on the twisted pair segment has

the proper pinouts.

c. Check the cable for continuity.

d. Check that the twisted pair connection meets dB loss and cable

specifications outlined in Chapter 2.

e. Check Local Management to ensure the port is enabled.

If a link still has not been established, contact Cabletron Systems

Technical Support.

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INSTALLATION

3.8 INSTALLING THE TP IM RI/RO MODULES

TPIMs provide RI/RO trunk port connections that support various

media for trunk cabling. You can attach different media types at the

Ring-In port and Ring-Out port. For example, you can insert a

TPIM-T1 as the Ring-In port and a TPIM-T4 as the Ring-Out port.

The following sections explain how to set the Phantom Switch, set the

RI/RO Switch, install the TPIM to the TRXI, and attach segments to

the TPIM.

Prior to connecting trunk cabling to the TPIMs, check the connectors

for proper pinouts. Table 3-1 provides a cross-reference of pinouts for

TPIMs used for Ring-In or Ring-Out applications.

Table 3-1. Pinout Cross-Reference for TPIMs

Signal TPIM-T2/T4

(RJ 45)

TPIM-T2/T4

(RJ 45)

TPIM-T1

(DB9)

TPIM-T1

(DB9)

Ring-In

Ring-Out

Ring-In

Ring-Out

TX+

TX-

RX+

RX-

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INSTALLATION

3.8.1 Settin g th e TP IM’s P h a n tom Sw itch a n d RI/RO Sw itch

Before you install a TPIM, set the Phantom Switch to the appropriate

setting. This switch enables the port to “autowrap” if a trunk cable

fails or is removed. Figure 3-11 shows the location of the Phantom

Switch. If you attach a Cabletron hub to the TPIM, leave the switch at

the factory default setting of 1. If you attach a Non-Cabletron device to

the TPIM, use the 0 setting.

Ensure that the Ring-In/Ring-Out Switch is in the factory default

RI/RO position. The TRXI does not support the Station (S) setting at

this time.

Note: If the switch locations on your TPIM do not match the locations

illustrated in Figure 3-11, refer to the TPIM Reference Card included

with the TPIM. The TPIM Reference Card outlines the current switch

locations and settings. If you have any questions, call Cabletron

Systems Technical Support.

Top View

(See Below For Settings)

RI/RO

TPIM-T1/TPIM-T2/TPIM-T4

TPIM-F2/TPIM-F3

Phantom Switch Settings

1 = Cabletron Device (Default)

0 = Non-Cabletron Device

Phantom Switch Settings

C = Cabletron Device (Default)

802.5 = Not Functional

RI/RO Switch Settings

RI/RO = Ring In/Ring Out (Default)

S = Station (Not Functional)

RI/RO Switch Settings

RI/RO = Ring In Ring Out (Default)

STN = Station (Not Functional)

Figure 3-11. The Phantom and RI/RO Switches

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INSTALLATION

3.8.2 In sta llin g a TP IM to th e TRXI

To install a TPIM, perform the following steps:

Ca u tion : Observe all static precautions while handling TPIMs.

1. Remove the mounting screw from the faceplate of the RI/RO port

on the TRXI.

2. If you are replacing a TPIM, remove the mounting screw and pull

the TPIM straight out from the TRXI.

3. Slide the new TPIM into place as shown in Figure 3-12.

4. Ensure the connectors on the rear of the module and on the inside

of the TRXI mate properly.

5. Reinstall the mounting screw.

LNK

TPIM-T1

LNK

TPIM-T1

Figure 3-12. Installing a TPIM

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INSTALLATION

3.8.3 Con n ectin g a Tw isted Pa ir Segm en t to th e TP IM-T1

Before connecting a segment to the TPIM-T1, check each end of the

segment to determine if the wires have been pinned properly.

To connect a TPIM-T1 to a Twisted Pair Segment:

1. Insert the DB9 connector on the segment into the DB9 port on the

TPIM as shown in Figure 3-13.

LNK

TPIM-T1

LNK

TPIM-T1

Figure 3-13. The TPIM-T1

2. Check that the LNK LED on the TPIM lights green. If the LED

lights red or is not lit, perform each of the following steps until it is:

a. Check that the device at the other end of the segment is on.

b. Verify that the DB9 is pinned properly.

c. Check the cable for continuity.

d. Check that the twisted pair connection meets dB loss and cable

specifications outlined in Chapter 2.

e. Check that the port is enabled through the Local Management.

If a link still has not been established, contact Cabletron Systems

Technical Support.

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INSTALLATION

3.8.4 Con n ectin g a Tw isted Pa ir Segm en t to th e TP IM-T2 or

TP IM-T4

The TPIM-T2 supports UTP cabling and the TPIM-T4 supports STP

cabling. The method for connecting an RJ 45 connector to an RJ 45 port

is the same for both UTP and STP cabling. Before connecting a

segment to the TPIM-T2 /T4, check each end of the segment to ensure

the wires are pinned properly. To connect a segment to a TPIM-T2/T4:

1. Insert the RJ 45 connector on the twisted pair segment into the

RJ 45 port on the TPIM as shown in Figure 3-14.

LNK

TPIM-T2

LNK

TPIM-T2

Figure 3-14. The TPIM-T2/T4

2. Check that the LNK LED on the TPIM lights green. If the LED

lights red or is not lit, perform each of the following steps until it is:

a. Check that the device at the other end of the segment is on.

b. Verify that the RJ 45 is pinned properly.

c. Check the cable for continuity.

d. Check that the twisted pair connection meets dB loss and cable

specifications outlined in Chapter 2.

e. Check that the port is enabled through Local Management.

If a link still has not been established, contact Cabletron Systems

Technical Support.

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INSTALLATION

3.8.5 Con n ectin g a Fiber Op tic Lin k Segm en t to th e TP IM-F 2

or TP IM-F 3

When connecting a ﬁber optic link segment to the TPIM-F2 or

TPIM-F3 keep the following in mind:

•

If you are connecting a ﬁber optic link segment with ST

connectors to a TPIM-F2 with ST ports, keep in mind that ST

connectors attach to ST ports much like BNC connectors attach

to BNC ports. The connector is inserted into the port with the

alignment key on the connector inserted into the alignment slot

on the port. The connector is then turned to lock it down.

•

The physical communication link consists of two strands of

ﬁber optic cabling: the Transmit (TX) and the Receive (RX). The

Transmit strand from the applicable port on the module will be

connected to the Receive port of a ﬁber optic device at the other

end of the segment. For example, TX of the applicable port on

the module will go to RX of the other ﬁber optic device. The

Receive strand of the applicable port on the module will be

connected to the Transmit port of the ﬁber optic device. For

example, RX of the applicable port on the module will go to TX

of the other ﬁber optic device.

It is recommended that you label the fiber optic cable to

indicate which fiber is Receive and which is Transmit. When

you buy fiber optic cable from Cabletron Systems, it is labeled

so that: at one end of the cable, one fiber is labeled 1, and the

other fiber is labeled 2. This pattern is repeated at the other

end of the cable. If you did not purchase your cable from

Cabletron Systems, be sure you have labeled your cable in the

manner described above.

Ca u tion : Do not touch the ends of the fiber optic strands, and do not let

the ends come in contact with dust, dirt, or other contaminants.

Contamination of the ends can cause problems in data transmissions. If

the ends become contaminated, clean them with alcohol using a soft,

clean, lint free cloth.

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INSTALLATION

To connect a ﬁber optic link segment to the TPIM-F2 or TPIM-F3:

1. Remove the protective plastic covers from the fiber optic ports on

the applicable port on the module and from the ends of the

connectors on each fiber strand.

2. Attach the fiber labeled 1 to the applicable receive port, labeled RX,

on the module as shown in Figure 3-15.

LNK

TPIM-F2

LNK

TPIM-F2

Figure 3-15. The TPIM-F2/F3

3. Attach the fiber labeled 2 to the applicable transmit port labeled

TX, on the module.

4. At the other end of the fiber optic cable, attach the fiber labeled 1

to the transmit port of the device.

5. Attach the fiber labeled 2 to the receive port.

6. Check that the LNK LED on the TPIM lights green. If the LED

does not light, perform each of the following steps until it is:

a. Check that the power is turned on for the device at the other

end of the link.

b. Verify that the fiber strands are properly “crossed-over”

between the applicable port on the module and the fiber optic

device at the other end of the fiber optic link segment.

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INSTALLATION

c. Verify that the fiber connection meets the dB loss specifications

outlined in Fiber Optic Network Requirements.

d. Check that the port is enabled through TRXI Local

Management.

If a link still has not been established, contact Cabletron Systems

Technical Support.

3.9 F INISHING THE INSTALLATION

The TRXI is now ready for operation. Before placing the network into

service, test the installation thoroughly, making sure that all stations

are able to be addressed and that the TRXI and all stations are

indicating normal operation. Ensure that the networking software is

conﬁgured properly to match the installed network. If you encounter

errors or abnormal operation, proceed to Chapter 4, Testin g a n d

Tr ou blesh ootin g.

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TESTING AND TROUBLESHOOTING

CHAP TER 4

TESTING AND TROUBLESHOOTING

This chapter contains procedures for testing the TRXI after you

connect it to the network. It also describes LANVIEW and explains

how to use the LCD to troubleshoot physical layer network problems.

4.1 CHECKING THE INSTALLATION

Perform the following to check the installation of the TRXI:

1. Trace the ring path through the network to be sure that there are

no breaks in the ring and that it is free from logical design errors.

a. Check each cable connection.

b. Verify the pinouts for every connection.

c. Check the cable conductors for continuity. Cable testers are

available for this task.

d. Check that cable connections at patch panels and wall plates

are secure.

2. Check the network ring speed:

a. Check the Ring Speed LED. Ensure the ring speed matches the

station and cable speciﬁcations mentioned in Chapter 2.

b. Be sure that all devices in the ring network are set to the same

ring speed. Check all stations in the network.

3. Ensure that the maximum cable length for EACH station and the

maximum number of stations are not exceeded.

When you complete each of these checks successfully, the TRXI is

ready for normal operation. If problems occur, contact Cabletron

Systems Technical Support.

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TESTING AND TROUBLESHOOTING

4.2 USING LANVIEW LEDs

LANVIEW is Cabletron Systems’ built-in visual diagnostic and status

monitoring system. Using LANVIEW, your network troubleshooting

personnel can quickly scan the LANVIEW LEDs to observe network

status or diagnose network problems, and determine which node or

segment is faulty. Figure 4-1 describes each of the front panel

LANVIEW LEDs.

TRXI-24A TOKEN RING HUB WITH LANVIEW®

24 23 22 21 20 19

18 17 16 15 14 13

12 11 10

PWR

CPU

ACT

MGMT

16 Mb/s

DISPLAY

DISPLAY RESET

COM 2 COM 1

DEFINITION

LED NAME

LED COLOR

Port Enable-No Link or Port Disable-No Link

Port Enable-Link

Port Disable-Link or Ring Speed Fault

Lobe Port Status

(Ports 1-24)

Off

Green (Solid)

Green (Blinking)

TPIM Inserted

TPIM Not Inserted

RI/RO

(Ring In/Ring Out)

Green (Solid)

Red (Solid)

No Power

Power

PWR

(Power)

Off

Green (Solid)

16 Mbps Ring Speed

4 Mbps Ring Speed

16 Mb/s

(Ring Speed)

Yellow (Solid)

Off

Good Frames

Beacon Frames

No Activity

ACT

(Network Activity)

Green (Flashing)

Red (Flashing)

Off

Management Agent Inserted

Management Agent Not Inserted

MGMT

Green (Solid)

(Network Management) Red (Solid)

CPU In Boot Process

CPU Initializing

CPU Functioning

CPU Not Functioning

CPU

Off

(Cental Processing Unit) Green (Flashing)

Green (Blinking)

Red (Solid)

Note: “Flashing” indicates an irregular LED pulse.

“Blinking” indicates a steady LED pulse.

Figure 4-1. LANVIEW LEDs

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TESTING AND TROUBLESHOOTING

4.3 USING THE LCD DISP LAY

The TRXI is equipped with an LCD as shown in Figure 4-2. The LCD

is a diagnostic tool that lets you view important status information

about the TRXI such as:

•

Power up diagnostics

Revision levels

Hardware MAC address

IP address

Error alerts.

The LCD presents four types of messages: Static System Messages,

Saved Alarm Messages, Unsaved Initialization Messages, and Saved

System Messages. The following sections describe each message.

LCD

TRXI-24A TOKEN RING HUB WITH LANVIEW®

24 23 22 21 20 19

18 17 16 15 14 13

12 11 10

PWR

CPU

ACT

MGMT

16 Mb/s

DISPLAY

DISPLAY RESET

COM 2 COM 1

Figure 4-2. LCD Display

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TESTING AND TROUBLESHOOTING

4.3.1 Sta tic System Messa ges

These messages display TRXI conﬁguration information. To view the

Static System Messages, momentarily press the Display button

located below the LCD window. Press the Display button to scroll

through each message. If you do not press the Display button within

ten seconds, the display defaults back to the product name.

Disp la yed Messa ge

Com m en ts

IP Address

Displays the current IP

xxx.xxx.xxx.xxx

address. This may be changed

through Local Management.

MAC Address

0000B8xxxxxx

Displays the Hardware

or MAC address.

RAM Image

Rev. xx.xx.xx

Displays the revision number of the

Flash EEPROM.

Boot PROM

Rev. xx.xx.xx

Displays the revision number of the

internal Boot PROM.

Flash Programmed

xx Times

Displays the number of times the

the Flash EEPROM has been

programmed

COM 1

Baud Rate xxxxxx

Displays the current baud rate

of the COM 1 port.

COM 1

Function xxxxxx

Displays the current function

(Console, Modem, UPS, or SLIP) of

the COM 1 port.

COM 2

Displays the current

Baud Rate xxxxxx

baud rate of the COM 2 port.

COM 2

Function xxxxxx

Display the current function

(-N/A-,Console, Modem, UPS, or

SLIP) of the COM 2 port.

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TESTING AND TROUBLESHOOTING

4.3.2 Ala r m Messa ges

Alarm messages pertain to events that occur within the TRXI. Press

the Display button and hold for ﬁve seconds to access the Alarm

Messages queue. You can scroll through each message by pressing the

Display button. If you do not press the Display button for ten seconds,

the LCD defaults to the product name.

Disp la yed Messa ges

Com m en ts

No Messages in

Queue

No alarm messages in queue. This is

the Alarm Messages default setting.

Port xxxxxx

Disabled

Network port or TPIM turned off

via Local or Remote Management.

Port xxxxxx

Enabled

Network port or TPIM turned on

via Local or Remote Management.

Port xx Violation

Ring Beaconing

Indicates unauthorized access

attempt at network lobe ports.

Indicates a station is attempting to

recover from a hardware problem on

the ring.

Beacon Recovered

Indicates the ring has recovered

from a beaconing situation.

Beacon Recv

Port xx Removed

Indicates that a station has been

removed from the ring as a result of

the beacon recovery process.

Ring Port xx Faulted

Indicates a TPIM RI or RO has

Autowrapped.

Fault Recovery Oscillation

Indicates that the network has been

in and out of a beaconing state

several times.

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TESTING AND TROUBLESHOOTING

4.3.3 Un sa ved In itia liza tion Messa ges

These are power-up messages that appear on the LCD as the event

occurs but are not saved in a buffer for future recall. If Fa ilu r e or

Er r or Messa ges appear, call Cabletron Technical Support.

Fa ilu r e or Er r or Messa ges

Cabletron

Ctrl. Reg. Err.

BBRAM Failure

Cabletron

SDRAM Failure

Modem SCC Error

Cabletron

Bit Swap Failure

Console SCC Error

Cabletron

LDRAM Failure

82C54 Failure

Cabletron

Eagle Failure

Nor m a l Un sa ved In itia liza tion Messa ges

Cabletron

Hardware Init

Cabletron

Boot From Flash

Cabletron

Eagle Test

Cabletron

BOOTP Discovery

RARP Req. State

Bit Swap Test

Cabletron

TFTP Req. State

TFTP in Progress

Cabletron

TFTP Complete

Erasing Flash

Cabletron

Writing Flash

Flash Programmed

Cabletron

Test in Progress

Programming LRAM

Cabletron

Boot Complete

TRXI-xx Cabletron

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TESTING AND TROUBLESHOOTING

4.3.4 Sa ved System Messa ges

Saved System Message are device related start-up or boot strap

messages, BOOTP/TFTP host, or start-up error messages. To access

the Saved System Messages queue, you must ﬁrst enter the Saved

Alarm Messages queue. While in the Alarm Messages queue, press the

Display button and hold for ﬁve seconds. You can scroll through each

message by pressing the Display button. If you do not press the

Display button for ten seconds, the LCD defaults to the product name.

Disp la yed Messa ge

TFTP Host

TFTP File

xxx.xxx.xxx.xxx

xxxxxxxxxxxxxxxx

Last TFTP Host

xxx.xxx.xxx.xxx

Last TFTP File

xxxxxxxxxxxxxxxx

BootP Host

xxx.xxx.xxx.xxx

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LOCAL MANAGEMENT

CHAP TER 5

LOCAL MANAGEMENT

This chapter explains how to set up a management terminal to access

the TRXI’s Local Management. It also explains the Local Management

screens and instructions for using them.

Local Management provides the tools to manage the TRXI and all of

its attached segments. You can change factory defaults, enable/disable

ports, and use the advanced features of Local Management to:

•

control access to your token ring network using the Ring

Security feature

•

assign an IP address and subnet mask

set interface parameters for both serial ports, Local

Management (Console), Serial Line Internet Protocol (SLIP),

Uninterruptible Power Supply proxy (UPS), or Modem

•

control password access to the TRXI through the community

names established in the Community Names Table

designate which Network Management Workstations receive

trap alarms from the device

navigate through the Management Information Base (MIB)

and manage the objects within it from a remote location. Given

the appropriate security level, the MIB is accessible from the

TRXI through the SNMP Tools screen.

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LOCAL MANAGEMENT

5.1 MANAGEMENT TERMINAL REQUIREMENTS

To access TRXI Local Management, you need either:

•

a Digital Equipment Corporation VT series terminal

a VT type terminal running emulation programs for the Digital

Equipment Corporation VT series

•

an IBM or compatible PC running a VT series emulation

software package.

5.1.1 Atta ch in g th e Ma n a gem en t Ter m in a l

Cabletron supplies an RJ 45 Cable Kit with the TRXI. This kit includes

a UTP console cable with RJ 45 connectors on each end. It also

provides adapters for DB9 or DB25 connections. Refer to the RJ 45

Cable Kit Instruction Sheet for adapter pinouts and additional

instructions.

To attach the management terminal to the TRXI’s COM 1 port:

1. Attach the male RJ 45 connector to the COM 1 port of the TRXI as

shown in Figure 5-1.

2. Attach the female end (25-pin or 9-pin, as applicable) to the COM

port on the terminal.

COM PORT

COM 1 RJ45 PORT

TRXI-24A TOKEN RING HUB WITH LANVIEW®

CONSOLE CABLE

MANAGEMENT TERMINAL

Figure 5-1. Management Terminal Connection

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LOCAL MANAGEMENT

5.1.2 Settin g th e Ma n a gem en t Ter m in a l Setu p Pa r a m eter s

Table 5-1 lists the setup parameters for the local management

terminal. If you have a Digital Equipment Corporation VT terminal,

press F 3 to access the Setup Directory. If you have a PC emulation of

the Digital Equipment VT terminal, refer to your equipment user

manual for setup parameters.

Table 5-1. VT Terminal Setup Parameters

FUNCTION

Columns

SELECTION

80 Columns

Disp la y Setu p :

Controls

Interpret Controls

No Auto Wrap

Cursor

Auto Wrap

Test Cursor

Mode

Gen er a l Setu p :

7 Bit Control

Cursor Keys

Normal Cursor Keys

Transmit = 9600

Com m u n ica tion s Transmit

Setu p :

Receive

XOFF

Receive = Transmit

any option

Bits, Parity

Stop Bit

Local Echo

Port

8 Bits, No Parity

1 Stop Bit

No Local Echo

DEC-423, Data

Leads Only

Transmit

any option

Auto Answerback

No Auto Answerback

any option

Keyboa r d Setu p : Auto Repeat

Keyclick

any option

Margin Bell

Warning Bell

No Auto Answerback

Auto Answerback

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LOCAL MANAGEMENT

5.1.3 Mod em Ca ble Con ﬁgu r a tion a n d Setu p

To access Local Management from a modem, use an RS-232 cable

available from Cabletron Systems. This cable connects the modem to

the TRXI COM 2 port. Figure 5-2 shows the pinout for a cable with an

RJ 45 connector at the TRXI end of the cable.

RJ45 COM 2 PORT

RJ45 COM 2

Port

25-Pin Female

"D" Shell Connector

RECEIVE

SIGNAL GROUND

DATA CARRIER DETECT

DATA TERMINAL READY

RING

Figure 5-2. Modem Cable Pinouts

To access Local Management, proceed as follows:

1. Turn the modem on. The modem must be set for Auto Answer and

Data Carrier Detect must be active. Refer to your modem’s user

manual for operating instructions.

2. Call the modem. The TRXI Password screen appears when you

establish a connection.

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LOCAL MANAGEMENT

5.2 ACCESSING LOCAL MANAGEMENT

With your terminal properly conﬁgured and the correct physical cable

connections in place, you can access Local Management.

To access Local Management:

1. Turn the terminal on. The TRXI Password screen shown in

Figure 5-3 appears.

TRXI LOCAL MANAGEMENT

Cabletron Systems Incorporated

P.O. Box 5005

Rochester, NH 03867-0505

(603) 332-9400

Flash Image Version:

Boot EPROM Version:

Board Revision:

X.XX.XX

XX.XX.XX

Enter User Password:

Figure 5-3. TRXI Password Screen

2. Enter your P a ssw or d . (The factory default password is the

Retu r n key.)

Note: Your password is one of the community names specified in the

Community Name Table. Access to certain Local Management

capabilities depends on the degree of access accorded that community

name. See Section 5.3.2 for more information about community names.

3. If your password is valid, the Main Menu screen shown in

Figure 5-4 appears. If your password is not valid, the cursor

returns to the beginning of the password field.

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LOCAL MANAGEMENT

5.3 USING LOCAL MANAGEMENT

TRXI Local Management consists of three menu screens:

•

the Main Menu screen

the Device Setup screen

and the Device Status screen.

Menu screens list TRXI Local Management options. Figure 5-4 shows

the menu screens and each Local Management option. The following

sections explain how to select and use each of the Local Management

options.

Flash Image Version: X.XX.XX

MAIN MENU

TRXI LOCAL MANAGEMENT

DEVICE SETUP

DEVICE STATUS

DEVICE STATISTICS

MIB NAVIGATOR

SNMP TOOL

EXIT LM

Flash Image Version: X.XX.XX

TRXI LOCAL MANAGEMENT

DEVICE SETUP

DEVICE STATUS

CHASSIS STATUS VIEW

COMPONENT STATUS VIEW

RMON VIEW

SYSTEM LEVEL

SNMP COMMUNITY NAMES

SNMP TRAPS

RING SECURITY

FLASH DOWNLOAD

RETURN

Figure 5-4. Local Management Menu Screen

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LOCAL MANAGEMENT

Selectin g a Men u Op tion

To select a menu option:

1. Use the arrow keys to highlight a menu option.

2. Press Retu r n . The selected screen appears.

Exitin g a Loca l Ma n a gem en t Scr een

To exit a Local Management screen:

1. Use the arrow keys to highlight the RETURN command at the

bottom of the screen.

2. Press Retu r n . Local Management returns to the associated Menu

screen.

Exitin g You r Loca l Ma n a gem en t Session

To exit your Local Management session:

1. Use the arrow keys to highlight the RETURN command at the

bottom of the screen.

2. Repeat Step 1 until you arrive at the Main Menu screen.

3. Use the arrow keys to highlight the EXIT LM command at the

bottom of the Main Menu screen.

4. Press Retu r n . The Password screen appears.

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LOCAL MANAGEMENT

5.3.1 Th e System Level Scr een

The System Level screen lets you view TRXI information such as COM

port status and MAC address. You can also use the System Level

screen to set the IP Address, Subnet Mask, and System Date/System

Time. Figure 5-5 shows the System Level screen.

Flash Image Version: X.XX.XX

TRXI LOCAL MANAGEMENT

SYSTEM LEVEL

System Time: 14:00:00

Subnet Mask

000.000.000.000 000.000.000.000

System Date: 06/26/94

IPAddress

SNMPAgent

COM 1

COM 2

[ CONSOLE ]

N/A

[

]

Clear SNMPAgent IPAddress and Community Names Only:

Clear All NVRAM: [NO]

[NO]

Enable Beacon Recovery:

[NO]

MAC Address

00-00-B8-00-00-00

Physical:

SAVE

RETURN

Figure 5-5. System Level Screen

The following sections provide a brief explanation of each ﬁeld on the

System Level screen and instructions for using them.

System Da te

Displays the current date.

System Tim e

Displays the current time.

IP Ad d r ess

Displays the IP Address of the SNMP agent.

Su bn et Ma sk

Displays the Subnet Mask of the SNMP agent.

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LOCAL MANAGEMENT

COM 1 Ap p lica tion

Displays the port’s application as either Console, SLIP, UPS, or

Modem.

COM 2 Ap p lica tion

Displays the port’s application as either Console, SLIP, UPS, Modem,

or N/A.

Clea r All NVRAM

Clears all battery backed up memory.

Clea r SNMP a gen t IP Ad d r ess a n d Com m u n ity Na m es On ly

Clears battery backed up memory of IP Address and Community

Names.

En a ble Bea con Recover y

Enables Beacon Recovery.

MAC Ad d r ess

Displays the physical hardware address.

Settin g th e System Da te

To set the System date:

1. Use the arrow keys to highlight the System Da te field.

2. Enter the date into the field in a MM/DD/YY format.

3. Press Retu r n . If the format not valid, the message “INVALID

DATE” appears. Re-enter the date using the correct format.

4. If the format is correct, use the arrow keys to highlight the SAVE

command at the bottom of the screen.

5. Press Retu r n . The “SAVED” message appears on the screen

indicating that your changes have been saved to memory.

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LOCAL MANAGEMENT

Settin g th e System Tim e

To set the system time:

1. Use the arrow keys to highlight the System Tim e field.

2. Enter the time into the field in a HH:MM:SS format.

3. Press Retu r n . If the format is not valid, the message “INVALID

TIME” appears. Re-enter the time using the correct format.

4. If the format is correct, use the arrow keys to highlight the SAVE

command at the bottom of the screen.

5. Press Retu r n . The “SAVED” message appears on the screen

indicating that your changes have been saved to memory.

Settin g th e IP Ad d r ess

To set the IP Address:

1. Use the arrow keys to highlight the IP Ad d r ess field.

2. Enter the IP Address into the field. The format for this entry is

XXX.XXX.XXX.XXX, with values of XXX ranging from 0-255.

3. Press Retu r n . If the format is not valid, the message “INVALID IP

FORMAT” appears. Re-enter the IP Address using the correct

format.

4. If the IP Address is correct, use the arrow keys to highlight the

SAVE command at the bottom of the screen.

5. Press Retu r n . The “SAVED” message appears on the screen

indicating that your changes have been saved to memory.

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Settin g th e Su bn et Ma sk

Note: Consult your Network Administrator prior to setting the Subnet

Mask.

The Subnet Mask deﬁnes how your TRXI treats SNMP Trap IP

destination addresses in its Community Names table.

•

Set the Subnet Mask when workstations in the Community

Names table reside on a different subnet (i.e., across a gateway

or router), and you want these workstations to receive traps.

•

Use the Subnet Mask factory default setting of 0.0.0.0 when all

trap designated workstations are on the TRXI subnet.

To set the Subnet Mask:

1. Use the arrow keys to highlight the Su bn et Ma sk field.

2. Press Retu r n to clear the field.

3. Enter the Subnet Mask into the field. The format for this entry is

XXX.XXX.XXX.XXX, with values of XXX ranging from 0-255.

4. Press Retu r n . If the format is not valid, the “INVALID IP

FORMAT” message appears. Re-enter the Subnet Mask using the

correct format.

5. If the format is correct, use the arrow keys to highlight the SAVE

command at the bottom of the screen.

6. Press Retu r n . The “SAVED” message appears on the screen

indicating that your changes have been saved to memory.

Settin g th e Clea r SNMP Agen t IP Ad d r ess a n d Com m u n ity

Na m es On ly F ield

To set this ﬁeld:

1. Use the arrow keys to highlight the Clear SNMP Agent IP Address

and Community Names Only field.

2. Press Retu r n to toggle from Yes to No.

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LOCAL MANAGEMENT

3. Select Yes to Clear SNMP Agent IP Address and Community

Names Only or No to escape the field.

4. Use the arrow keys to highlight the SAVE command.

5. Press Retu r n . The “SAVED” message appears on the screen

indicating that your changes have been saved to memory.

Settin g th e Clea r All NVRAM F ield

To set the Clear All NVRAM ﬁeld:

1. Use the arrow keys to highlight the Clea r All NVRAM field.

2. Press Retu r n to toggle from Yes to No.

3. Select Yes to clear NVRAM or No to escape the field.

4. Use the arrow keys to highlight the SAVE command.

5. Press Retu r n . The “SAVED” message appears on the screen

indicating that your changes have been saved to memory.

Settin g th e En a ble Bea con Recover y F ield

To set the Enable Beacon Recovery ﬁeld:

1. Use the arrow keys to highlight the Enable Beacon Recovery field.

2. Press Retu r n to toggle from Yes to No.

3. Select Yes to enable Beacon Recovery or No to escape the field.

4. Use the arrow keys to highlight the SAVE command.

5. Press Retu r n . The “SAVED” message appears on the screen

indicating that your changes have been saved to memory.

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LOCAL MANAGEMENT

5.3.2 Th e SNMP Com m u n ity Na m es Scr een

The SNMP Community Names screen lets you set community names.

Community names serve two purposes; they act as passwords to Local

Management and they are agents of security control to your TRXI. You

control TRXI access by establishing up to three levels of security

authorization (Read Only, Read-Write, and Super-User). Only a user

with Super-User access can change the device IP address and the

community names.

Ca u tion : Community Names are passwords to Local Management.

Remember your Community Name.

Local Management passwords accorded Read-Only and Read-Write

access privileges are not allowed editing capabilities to some ﬁelds. In

this case, the message “AUTHORIZATION PROHIBITS ACCESS”

appears. Figure 5-6 shows the SNMP Community Names screen.

Flash Image Version: X.XX.XX

TRXI LOCAL MANAGEMENT

Component Name

SNMP COMMUNITY NAMES

Community Name

Access Policy

TRXI Chassis MGR

public

ring1

READ-ONLY

READ-WRITE

SUPER-USER

<CR>

SAVE

RETURN

Figure 5-6. SNMP Community Names Screen

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LOCAL MANAGEMENT

The following sections provide a brief explanation of each ﬁeld on the

SNMP Community Names screen and instructions for using them.

Com p on en t Na m e

Displays the component name as TRXI Chassis Manager.

Com m u n ity Na m e

Displays the Community Name or “password” to Local Management.

Access

Displays the access level accorded to each community name. The

following list deﬁnes each access code:

Read-Only

This allows read-only access to Local Management,

but excludes access to security protected fields of the

upper levels of authorization (Read-Write or

Super-User).

Read-Write

Super-User

This allows you to read and write to Local

Management fields, excluding IP Address, Subnet

Mask, and Community Names and Ring Security.

This allows read-write access to all modifiable

parameters including Community Names, IP

Addresses, Traps, Ring Security, and SNMP objects.

Ed itin g th e Com m u n ity Na m e F ield

To edit the Community Name ﬁeld:

1. Use the arrow keys to highlight the Com m u n ity Na m e field.

2. Enter the password, up to 26 characters in length, into the field. If

you press Retu r n without entering a password, the field defaults

to Public.

3. Use the arrow keys to highlight the SAVE command at the bottom

of the screen.

4. Press Retu r n . The “SAVED” message appears indicating that your

changes have been saved to memory.

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LOCAL MANAGEMENT

5.3.3 Th e SNMP Tr a p s Scr een

The SNMP Traps screen lets you designate which management

workstations receive trap messages. Figure 5-7 shows the SNMP

Traps screen.

Flash Image Version: X.XX.XX

TRXI LOCAL MANAGEMENT

Trap Destination

SNMP TRAPS

Trap Community Name

Enable Traps

0.0.0.0

<CR>

SAVE

RETURN

Figure 5-7. SNMP Traps Screen

The following sections provide a brief explanation of each ﬁeld on the

SNMP Traps screen and instructions for using them.

Tr a p Destin a tion

Indicates the IP Address of the workstation that will receive trap

alarms from the TRXI.

Tr a p Com m u n ity Na m e

Displays the user-deﬁned name of the SNMP Compliant Network

Management Workstations to receive trap alarms from the TRXI.

En a ble Tr a p s

Enables the transmission of SNMP trap messages.

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LOCAL MANAGEMENT

Settin g SNMP Tr a p s

To set SNMP traps:

1. Use the arrow keys to highlight the Tr a p Destin a tion field.

2. Enter the IP address of the device that will receive trap alarms

from the TRXI, then press Retu r n . The format for this entry is

XXX.XXX.XXX.XXX, with the value of XXX ranging from 0 to 255.

3. Use the arrow keys to highlight the Tr a p Com m u n ity Na m e

field.

4. Enter the community name of the device, then press Retu r n . If you

press Retu r n without entering a community name, the field

defaults to <CR>.

5. Use the arrow keys to highlight the En a ble Tr a p s field.

6. Enter Y (yes) to send alarms from the TRXI to the workstation, or

N (no) to prevent alarms from being sent.

7. Use the arrow keys to highlight the SAVE command at the bottom

of the screen.

8. Press Retu r n . The “SAVED” message appears indicating that your

changes have been saved to memory.

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LOCAL MANAGEMENT

5.3.4 Th e Rin g Secu r ity Scr een

The Ring Security screen lets you control access to your token ring

network. Figure 5-8 shows the Ring Security screen. When you enable

ring security, the TRXI stores the MAC address of each station on the

token ring network in a secure database or “allowed list.” Only

stations on the allowed list can enter the ring. The TRXI can store up

to 250 station MAC addresses on the allowed list. The TRXI retains

the allowed list in its battery-backed Non-Volatile Random Access

Memory (NVRAM). If you power up or reset the TRXI, NVRAM

retains the allowed list and automatically re-enables ring security.

Flash Image Version: X.XX.XX

TRXI LOCAL MANAGEMENT

RING SECURITY

STATION ADDRESS

00-00-00-00-00-00

Stn Edit [00-00-00-00-00-00] [Add]

Security Mode [Disabled]

SAVE/EXECUTE NEXT_SCREEN PREVIOUS_SCREEN RETURN

Figure 5-8. Ring Security Screen

You can append the allowed list by temporarily disabling ring security,

then re-enabling it using the Alarms Only feature. The TRXI acts as

the Ring Security Monitor for the ring and provides security for the

entire ring.

Note: You should enable the Ring Security feature on only on e TRXI

per token ring.

You can select two modes of ring security; Alarm Only and

Alarm/Remove. In the Alarm Only mode, new stations can enter the

ring, but a “station added” trap/alarm notiﬁes the Network

Management Station (NMS) of the event.

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LOCAL MANAGEMENT

The trap/alarm includes the new station’s MAC address so that you

can decide if the new station should be allowed to remain on the ring.

If you select the Alarm/Remove mode, ring security sends a “Remove

MAC Frame Command” to new stations attempting to enter the ring,

and a trap/alarm to the NMS informing it of the action taken. If the

Remove MAC Frame Command fails to remove the new station after

three attempts, ring security sends a trap/alarm to the NMS

informing it that “the station could not be removed.”

The following section provides a brief explanation of each ﬁeld and

command on the Ring Security screen and instructions for using them.

Note: Before you begin, you must set up the TRXI’s SNMP Traps screen

to designate which Network Management Stations receive trap/ alarms

(refer to the SNMP Traps screen section). This ensures that trap/ alarms

generated by ring security arrive at the appropriate destination.

Sta tion Ad d r ess

This ﬁeld lists the MAC address of each station on the ring security

allowed list. This ﬁeld can lists up to 250 MAC addresses on 22 local

management screens.

Stn Ed it

The Station Edit command lets you add or delete stations from the

allowed list. Use the Stn Edit command for single entry edits to the

allowed list (refer to the Alarm Only security mode deﬁnition for

information about adding multiple users).

Secu r ity Mod e

This command lets you set the Security Mode for the ring. Security

Modes determine the level of ring security. You can select the following

Security Modes:

•

Disa bled - This is the factory default setting. Use this option

to temporarily disable ring security so that new stations can

enter the ring.

•

Ala r m On ly - In this mode, ring security allows new stations

to enter the ring. When a station enters the ring, ring security

sends a “station added” trap/alarm to the Network

Management Station.

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LOCAL MANAGEMENT

The “station added” trap message includes the new station’s

MAC address so that you can decide if the new station should

be allowed on the ring.

To add multiple users to the ring, temporarily disable ring

security using the Disable mode, then select the Alarm Only

mode to re-enable ring security. Ring Security stores the MAC

address of each station on the ring to the allowed list. This

saves you from entering MAC addresses one at time using the

Stn Edit command. Refer to “Building the Allowed List” for

instructions.

•

Ala r m /Rem ove - This is the highest level of ring security.

When in the Alarm/Remove mode, ring security sends a

“Remove MAC Frame Command” to new stations attempting to

enter the ring, and a trap/alarm to the NMS informing it of the

action taken. The “Remove MAC Frame Command” tries to

automatically remove the station from the ring. If it cannot

remove the station from the ring after three attempts, it sends

a trap/alarm to the NMS informing it that “the station could

not be removed.”

SAVE/EXECUTE

This command saves all security mode changes to the TRXI’s NVRAM.

You must use the SAVE/EXECUTE command for your changes to take

effect.

NEXT_SCREEN

Use this command to scroll to the next screen of the allowed database.

P REVIOUS_SCREEN

Use this command to scroll back to the previous screen of the allowed

database list.

RETURN

Use this command to exit the Ring Security screen and return to the

Device Setup screen.

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LOCAL MANAGEMENT

Bu ild in g th e Allow ed List

Note: You must set the Security Mode field to Disa bled before you build

the allowed list.

To build the allowed list:

1. Use the arrow keys to highlight the Security Mode field.

2. Press Retu r n to toggle selections (Disabled, Alarm Only, Remove/

Alarm). Select the Ala r m On ly option.

3. Use the arrow keys to highlight the SAVE/EXECUTE command.

4. Press Retu r n . The TRXI enables ring security and generates the

allowed list. The “SECURITY MODE CHANGED” message

appears at the top of the screen.

5. To view the allowed list, you must refresh the Ring Security screen

by exiting, then re-entering the screen.

Ad d in g Sta tion s to th e Sta tion Ad d r ess Allow ed List

To add stations one at a time to the Station Address allowed list:

1. Use the arrow keys to highlight the Stn Edit field.

2. Press Retu r n to clear the field.

3. Enter the MAC address of the station you want to add in

XX-XX-XX-XX-XX-XX format. To delete characters use the

Ba ck sp a ce key.

4. Use the arrow keys to highlight the Add/Del field.

5. Press Retu r n to toggle selections. Select the Ad d option.

6. Use the arrow keys to highlight the SAVE/EXECUTE command.

7. Press Retu r n . The station’s MAC address appears on the screen.

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LOCAL MANAGEMENT

Deletin g Sta tion s fr om th e Sta tion Ad d r ess Allow ed List

To delete stations from the Station Address allowed list:

1. Use the arrow keys to highlight the Stn Edit field.

2. Press Retu r n to clear the field.

3. Enter the MAC address of the station you want to delete in

XX-XX-XX-XX-XX-XX format. To delete characters, use the

Ba ck sp a ce key.

4. Use the arrow keys to highlight the Add/Del field.

5. Press Retu r n to toggle selections. Select the Del option.

6. Use the arrow keys to highlight the SAVE/EXECUTE command.

7. Press Retu r n . The station’s MAC address is deleted.

Note: You must set ring security to the Alarm/ Remove mode to

effectively delete a station from the allowed list and keep it off the ring.

If you delete a station from the allowed list while in the Alarm Only

mode, the station can re-enter the ring and its Mac address will

reappear in the allowed list.

Ch a n gin g th e Rin g Secu r ity Mod e

To change the Security Mode:

1. Use the arrow keys to highlight the Security Mode field.

2. Press Retu r n to toggle selections (Disabled, Alarm Only, Remove/

Alarm). Select the desired option.

3. Use the arrow keys to highlight the SAVE/EXECUTE command,

then Press Retu r n . The TRXI enables the selected mode of ring

security.

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LOCAL MANAGEMENT

5.3.5 Th e Device Sta tistics Scr een

The Device Statistics screen lets you view ring information, isolating

errors, and non-isolating errors. Figure 5-9 shows the Device Statistics

screen.

Flash Image Version: X.XX.XX

DEVICE STATISTICS (TOTAL)

TRXI LOCAL MANAGEMENT

INTERFACE:

RING INFORMATION

Frames Received: 0

KBytes Received: 0

Errors Received: 0

Active Monitor Addr: 00-00-00-00-00-00

Ring Status: Normal

Ring Number:

Beacon States: 0

Stations on Ring:

Ring Purges: 0

Active Monitor Changes: 0

Ports Enabled: 24

Ring Speed (Mb/s): 16

ISOLATING ERRORS

Line Errors: 0

NON-ISOLATING ERRORS

Lost Frame Errors: 0

Frame Copied Errors: 0

Rcvr Congestion Errors: 0

Token Errors: 0

Burst Errors: 0

AC Errors: 0

Abort Transmit Errors: 0

Internal Errors: 0

Frequency Errors: 0

ACCUMULATE DELTA

REFRESH99sec

RETURN

Figure 5-9. Device Statistics Screen

The following section provides a brief explanation of each ﬁeld on the

Device Statistics screen and instructions for using them.

Device Sta tistics

Displays the Device Statistics counter mode. The counter mode lets

you determine how you want the Device Statistics screen to gather

statistics. You can choose the following methods:

•

Accumulate: Initiates a new statistic count.

Delta: Total of statistics beginning from the last screen refresh.

Total: Total of statistics beginning from the last power-up.

In ter fa ce

Displays the network interface. This ﬁeld is always 1.

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LOCAL MANAGEMENT

F r a m es Received

Displays the total frames detected on the ring since the TRXI was last

powered on or reset.

KBytes Received

Displays the kilobyte sum of all frames detected on the TRXI since it

was last powered up or reset.

Er r or s Received

Displays the total Isolating and Non-Isolating Errors detected by the

TRXI.

Bea con Sta tes

Displays the total beacon states detected by the TRXI. Stations

transmit beacons when they detect bit streaming or signal loss on the

ring.

Rin g P u r ges

Displays the total ring purge frames transmitted by the active

monitor.

Active Mon itor Ch a n ges

Displays the number of times a different station has been active

monitor.

ISOLATING ERRORS

Isolating Errors are “soft” ring errors that report the domain of a fault

(that is, you can isolate the fault’s region to the transmitting adapter,

the receiving adapter, and the components - cabling and wiring

concentrators - between the two).

Lin e Er r or s

Displays the total line errors detected by the TRXI. Line Errors

are corrupted frames that are detected by a node. This type of

error normally occurs when stations enter and leave the ring.

This error can also indicate a problem with the receiver of the

reporting node, or the transmitter of its Nearest Active

Upstream Neighbor (NAUN), or the cabling and hub hardware

between them.

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LOCAL MANAGEMENT

Bu r st Er r or s

Displays the total burst errors detected by the TRXI. Burst

Errors are the absence of clocking signals at a node’s receiver.

This error normally occurs when stations enter or leave the ring

with the absence of phantom current.

This error can also indicate a problem with the receiver of the

reporting node, or the transmitter of its NAUN, or the cabling

and hub hardware between them.

AC Er r or s

Displays the total Address Recognized/Frame Copied errors.

This indicates that the reporting NAUN is faulty. The node

cannot set the address recognized indicator and/or frame copied

indicator bits in the frame which it has copied. This leaves the

downstream node with an incorrect NAUN address.

Abor t Tr a n sm it Er r or s

Displays the total abort delimiter frames transmitted by a

station. This indicates that either the reporting node has

detected an error on itself, or there is an error with its NAUN, or

the cabling and wiring hubs between them.

In ter n a l Er r or s

Displays the total internal errors detected by the adapter’s

hardware and/or ﬁrmware. These errors cause the adapter to

remove itself from the ring and indicates a problem with the

adapter hardware or ﬁrmware (possibly an inoperable chipset,

timers, or counters).

RING INF ORMATION

Ring Information provides ring status information.

Active Mon itor Ad d r

Displays the MAC address of the active monitor. The active

monitor initiates recovery procedures from various error

situations.

Rin g Sta tu s

This ﬁeld lists the current status of the ring being monitored by

the TRXI. TRXI displays the following ring status conditions:

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LOCAL MANAGEMENT

•

Un k n ow n , Indicates the state of the ring cannot be

detected by the management station.

Closed , Indicates that the management station is not

inserted into the ring and therefore cannot determine the

ring state.

•

Nor m a l, Indicates the ring is running with no problems,

and tokens are being detected by the management

station.

P u r ge, Indicates that the active monitor has issued a

ring purge command. Communications will be restored

when a new token is released.

Con ten tion , Indicates that the ring has entered into the

active monitor contention process to determine a new

active monitor for the ring.

•

Bea con in g, Indicates that the management station has

detected a beacon frame.

Lobe Fa il, Indicates that a station failed the lobe self-

test when it attempted to insert into the ring.

Rin g Nu m ber

Displays the number of rings on the network.

Sta tion s on a Rin g

Displays the number of stations inserted into the ring.

P or ts En a bled

Displays the number of network lobe ports enabled.

Rin g Sp eed

Displays the ring speed of the TRXI as either 4 Mb/s or 16 Mb/s.

NON-ISOLATING ERRORS

Non-Isolating Errors are “soft error” conditions that could have been

caused by any station on the ring. Their fault domain cannot be

detected.

Lost F r a m e Er r or s

Displays the total number of Lost Frame Errors. These errors

occur when the adapter fails to receive the end of the frame it

has just transmitted. The frame was lost somewhere on the ring

but there is no way to pinpoint where. This can be caused by

stations entering or leaving the ring.

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F r a m e Cop ied Er r or s

Displays the total number of Frame Copied Errors. These errors

occur when a station ﬁnds a frame with its address as the

destination, but ﬁnds the address recognized indicator bits not

set to zero. This indicates a possible duplicate address.

Rcvr Con gestion Er r or s

Displays the total number of Rcvr Congestion Errors. This

indicates a station is receiving/repeating a frame and recognizes

a frame addressed to it, but has no buffer space available for the

frame.

Tok en Er r or s

Displays the total number of Token Errors. Token Errors occur

when an active monitor does not see a token circulating on the

ring before its TVX (Timer, Valid Transmission) time expires

(e.g. a lost frame error has occurred), or sees a recirculating

frame or token. The active monitor is responsible for purging the

ring and issuing a new token.

F r equ en cy Er r or s

Displays the total number of frequency errors. This indicates

that the frequency of the incoming signal deviates excessively

from the adapter’s onboard crystal oscillator. It could indicate an

error in this node’s oscillator, the active monitor, or any node in

between. When the node detects a frequency error, it enters the

monitor contention process.

Tota l

Displays a running total of statistics beginning from the TRXI’s

last power-on.

Accu m u la te

Initiates a new statistic count. The TRXI begins totaling

statistics after you select accumulate.

Delta

Displays the total statistics beginning at the last screen Refresh.

Refr esh 99sec

Displays the time interval between screen counter updates. You

can choose refresh intervals in increments of 3 seconds, with the

maximum interval being 99 seconds.

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Selectin g th e Device Sta tistics Cou n ter Mod e

To select the Device Statistics counter mode:

1. Use the arrow keys to highlight Accumulate, Total, or Delta at the

bottom of the screen. The currrent setting appears in the Device

Statistics field at the top of the screen. Only the unused counter

modes appear at the bottom of the screen.

2. Press the Retu r n key. The selected counter mode appears at the

top of the screen.

Settin g th e Refr esh F ield

To set the Refresh ﬁeld:

1. Use the arrow keys to highlight the REFRESH99sec field at the

bottom of the screen.

2. Press the Sh ift and + keys to increment the time interval or

the - key to decrease the time interval.

3. Press the Retu r n key to save your changes.

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LOCAL MANAGEMENT

5.3.6 Th e Ch a ssis Sta tu s View Scr een

The Chassis Status View screen displays the status of ports 1-24, the

Ring In port, and the Ring Out port. You can also use this screen to

enable the TRXI ports. Figure 5-10 shows the Chassis Status View

Screen.

Flash Image Version: X.XX.XX

TRXI LOCAL MANAGEMENT

PORT STATUS: ADMIN

CHASSIS STATUS VIEW

TEMP:

NORMAL

ON ON ON ON ON ON ON ON ON ON ON ON

MODE:

MANAGEMENT

ENABLE ALL PORTS

OPERATIONAL

REFRESH99sec

RETURN

Figure 5-10. Chassis Status View Screen

The following sections provide a brief explanation of each ﬁeld and

instructions for using them.

P or t Sta tu s

Displays the port status as Administrative or Operational.

Tem p

Displays the hub temperature as Normal, Warm, or Hot.

Mod e

Displays the current status view as Operational or Administrative.

En a ble All P or ts

Enables all TRXI ports.

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LOCAL MANAGEMENT

Op er a tion a l

Selects the status view mode as Operational or Administrative.

Refr esh 99sec

Displays the time interval between screen counter updates. You can

choose refresh intervals in increments of 3 seconds, with the

maximum interval being 99 seconds.

Retu r n

Returns the screen to the Device Status screen.

Settin g th e En a ble All P or ts Op tion

To set the Enable All Ports option:

1. Use the arrow keys to highlight Enable All Ports.

2. Press Retu r n to Enable all the TRXI ports.

Settin g th e Op er a tion a l/Ad m in istr a tive Mod e Op tion

To set the Operational/Administrative Mode option:

1. Use the arrow keys to highlight Operational or Administrative.

2. Press Retu r n to select Operational or Administrative. The

selected mode appears in the Mode field.

Settin g th e Refr esh F ield

To set the Refresh ﬁeld:

1. Use the arrow keys to highlight the REFRESH99sec field at the

bottom of the screen.

2. Press the Sh ift and + keys to increment the time interval or

the - key to decrease the time interval.

3. Press the Retu r n key to save your changes.

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5.3.7 Th e Com p on en t Sta tu s View Scr een

The Component Status View screen is a view only screen that displays

the functions operating in the TRXI.

Flash Image Version: X.XX.XX

COMPONENT STATUS VIEW

TRXI LOCAL MANAGEMENT

COMPONENT NAME

TRXI Chassis MGR

TRXI LIM

Network 1

TRXI Protocol Stack

TRXI SNMP Agent

TRXI RMON

REFRESH99sec

RETURN

Figure 5-11. Component Status View Screen

Settin g th e Refr esh F ield

To set the Refresh ﬁeld:

1. Use the arrow keys to highlight the REFRESH99sec field at the

bottom of the screen.

2. Press the Sh ift and + keys to increment the time interval or

the - key to decrease the time interval.

3. Press the Retu r n key to save your changes.

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LOCAL MANAGEMENT

5.3.8 Th e SNMP Tools Scr een

This section describes speciﬁc commands and features within the

SNMP Tools screen. This screen allows you to access management

information bases (MIBs), and varies according to your level of

security access.

The following descriptions outline the super-user management

capabilities. From SNMP Tools you can:

•

review speciﬁcs about object identiﬁers (OIDs)

edit conﬁgurable OIDs

view OIDs sequentially from the originally requested OID.

To access the SNMP Tools Screen from the Features Selection Screen,

use the arrow keys to highlight the SNMP Tool Su p p or t option, then

press the Retu r n key. The SNMP Tools Screen, Figure 5-12, appears.

Flash Image Version: X.XX.XX

TRXI LOCAL MANAGEMENT

SNMP TOOLS

COMMUNITY NAME: public

OID PREPEND: 1.3.6.1

GET SET GETNEXT WALK RECALL-OID STEP CYCLES REPEAT

F6 F7 F8 F9

RETURN

F10

Figure 5-12. SNMP Tools Screen

The following describes the SNMP Tools Screen ﬁelds and commands.

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LOCAL MANAGEMENT

SNMP Com m u n ity Na m e

Identiﬁes the community name MIB access level password.

OID P r ep en d

Speciﬁes the number preﬁx common to all object identiﬁers (OIDs)

found in a MIB. The preﬁx ‘1.3.6.1’ is the default. You can modify this

ﬁeld to suit your needs.

GET

Allows you to retrieve MIB objects, one at a time, using SNMP

protocol.

SET

Lets you edit modiﬁable MIB objects, using SNMP protocol.

GETNEXT

Displays the next OID in the MIB tree by getting the next SNMP OID

from a remote agent.

WALK

Scrolls you through the MIB, leaf by leaf, from a user-speciﬁed object

identiﬁer. Leaves are objects, or instances of objects. After initializing

a walk you see the following categories for each entry:

•

Speciﬁed OID — identiﬁes the number tag for that OID.

Size — gives the number of bytes required to store the object.

Data Type — gives the object’s variable type (e.g., int=integer).

Data Value — displays what the object identiﬁer represents.

RECALL-OID

Recalls from memory the last OID used since powering up the board

or re-entering the SNMP Tools screen.

STEP

Displays the MIB, step by step, with speciﬁc OID details.

CYCLES

Allows you to specify the number of GET NEXT requests to walk

through and how much time elapses between each request.

REP EAT

Repeats the Get command, allowing you to monitor any changes to a

speciﬁc OID.

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LOCAL MANAGEMENT

Th e Secu r ity Access Level

Each MIB component that the TRXI supports (e.g., RMON, DLM, etc.)

has its own “password” for each possible level of access (ranging from

Basic Read-Only to Super-User).

Note: A complete list of Super-User Community Names (also called

Community Strings) resides in the Cabletron proprietary chassis MIB.

The MIB group chCompName provides the names of the MIB

components. The MIB group chCompSUCommStr provides individual

MIB component Community Names/ Strings.

The component information corresponds numerically – by last digit. In

other words, each instance (i.e., OID element) in the chCompName

group indicates its match in the chCompSUCommStr group.

In order to access a speciﬁc MIB’s components, you must set the

appropriate MIB password in the COMMUNITY NAME ﬁeld.

Note: The default Super-User password (public) allows you to access all

MIB components. To change the SNMP Tools screen COMMUNITY

NAME field, you must have Super-User access to Local Management.

To set the SNMP Tools screen COMMUNITY NAME:

1. Use the arrow keys to highlight the field to the right of

COMMUNITY NAME.

2. Enter the Community Name necessary for Super-User access for

any specific MIB (e.g., channelA for Repeater Rev. 4 MIB).

3. Press the Retu r n key. The Community Name changes.

Gettin g a n d Settin g OIDs

To get an OID:

1. Highlight GET, using the arrow keys.

2. Press the Retu r n key. “<GET> OID (=| F9)” appears.

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LOCAL MANAGEMENT

3. Enter an OID either by:

•

using the keyboard to enter the OID.

Sh or tcu t: Save yourself some keystrokes by typing the OID

minus the OID’s prepend (i.e., given an OID prepend of 1.3.6.1,

you enter 2.1.1.4.0, and the Local Management gets the MIB II

sysContact OID 1.3.6.1.2.1.1.4.0).

•

pressing F 9 to recall an OID already entered, and using the

keyboard to modify the recalled OID as necessary.

entering an ‘=’ and the OID sufﬁx (e.g., if you enter =2.1.1.4.0,

the OID = 1.3.6.1.2.1.1.4.0). This allows you to digress and not

use the prepend.

4. Press the Retu r n key. If there is no instance of that OID, the TRXI

displays “MIB_NO_INSTANCE.” Otherwise, the TRXI displays

that OID’s data type, length, and value.

To get the next OID:

1. Highlight GETNEXT, using the arrow keys.

2. Press the Retu r n key. “<GETNEXT> OID (=| F9)” appears.

3. Enter the OID.

4. Press the Retu r n key. If that OID does not exist, the TRXI

displays “MIB_NO_INSTANCE”. Otherwise the TRXI displays

that OID’s data type, length, and value.

Sh or tcu t: If you have previously entered an OID, press F 9 to

recall that entry. You can use the arrow keys to modify the recalled

OID, or if you have not previously entered the OID, type the OID

minus the OID’s prepend.

To set an OID [information in brackets provides an example]:

1. Highlight SET, using the arrow keys.

2. Press the Retu r n key. “<SET> OID (=| F9)” appears.

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LOCAL MANAGEMENT

3. Enter an OID. [1.3.6.1.2.1.1.4.0]

4. Press the Retu r n key. If that OID does not exist, the TRXI

displays “MIB_NO_INSTANCE”. Otherwise the TRXI displays:

{INteger String Null OId IP address Counter Gauge Timeticks

OPaque}

“DATA TYPE (name):”.

Sh or tcu t: If you have previously entered an OID, press F 9 to

recall that entry. You can use the arrow keys to modify the recalled

OID, or if you have not previously entered the OID, save yourself

some keystrokes by typing the OID minus the OID’s prepend.

5. Enter the OID’s Da ta Typ e. [The sysContact Da ta Typ e is

String.]

Note: When setting a String, SNMP tools requests the kind of data

you plan to enter — HEX or ASCII. [In this example choose ASCII.]

6. Press the Retu r n key. The TRXI displays “SNMP OID DATA.”

7. Enter the Da ta , or value of the OID. [Type in a sysContact. This

OID allows for a String of up to 12 characters.]

8. Press the Retu r n key. If the TRXI accepts the entry, it displays

“<SET> OPERATION CODE: XXXX <OK>”; otherwise, an error

message appears.

Scr ollin g Th r ou gh Mib OIDs

Viewing several object identiﬁers at one time allows you to quickly

scan a MIB for the information that you need. The SNMP Tools screen

provides several scroll options:

•

Walk — scrolls through OIDs sequentially, from the initial OID.

Cycle — allows you to specify how many GetNext commands to

cycle through for one OID.

•

Step — pages through the MIB, one OID at a time.

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To walk through the MIB:

1. Highlight WALK, using the arrow keys.

2. Press the Retu r n key. “<INITIAL> OID (=| F9)” appears.

3. Enter the OID.

4. Press the Retu r n key. Local Management begins walking through

the sublayers of the MIB available from the specified OID. Each

OID in the list displays the specified OID, its size, its data type, and

the data value.

5. Press any key to stop the walk, or wait for “***MIB WALK

COMPLETED***” to appear on the screen.

To cycle through:

1. Highlight CYCLES, using the arrow keys.

2. Press the Retu r n key. “ENTER CYCLE COUNT:” appears.

3. Enter the number of OID cycles that you want to scroll through.

4. Press the Retu r n key. “ENTER CYCLE DELAY:” appears.

5. Enter the delay that you want (in seconds) between get next

requests.

6. Press the Retu r n key. “<INITIAL> OID (=| F9)” appears.

7. Enter the OID.

8. Press the Retu r n key.

To step through:

1. Highlight GETNEXT, using the arrow keys.

2. Press the Retu r n key. “<GETNEXT> OID (=| F9)” appears.

3. Enter the OID (only the suffix is necessary).

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LOCAL MANAGEMENT

4. Press the Retu r n key. The initial OID details, including its size,

data type, and data value, appear.

5. Highlight STEP , using the arrow keys.

6. Press the Retu r n key to page through the MIB to the next OID.

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