Nortel Networks Switch 5625HD User Manual

Part No. 206208-A

August 1999

4401 Great America Parkway

Santa Clara, CA 95054

Using the Model 5625HD

EtherSpeedII Switch Module

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EC Declaration of Conformity

This product conforms to the provisions of Council Directive 89/336/EEC and 73/23/EEC. The

Declaration of Conformity is available on the Nortel Networks World Wide Web site at

http://libra2.corpwest.baynetworks.com/cgi-bin/ndCGI.exe/DocView/.

Japan/Nippon Requirements Only

Voluntary Control Council for Interference (VCCI) Statement

Taiwan Requirements

Bureau of Standards, Metrology and Inspection (BSMI) Statement

Canada Requirements Only

Canadian Department of Communications Radio Interference Regulations

This digital apparatus (Model 5625HD EtherSpeedII Switch Module) does not exceed the Class A limits for

radio-noise emissions from digital apparatus as set out in the Radio Interference Regulations of the Canadian

Department of Communications.

Règlement sur le brouillage radioélectrique du ministère des Communications

Cet appareil numérique (Model 5625HD EtherSpeedII Switch Module) respecte les limites de bruits radioélectriques

visant les appareils numériques de classe A prescrites dans le Règlement sur le brouillage radioélectrique du ministère

des Communications du Canada.

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Contents

Preface

Before You Begin ............................................................................................................. xv

How to Get Help ............................................................................................................x viii

Chapter 1

Overview of the Model 5625HD Switch Module

Overview of the EtherSpeed II Switch Module ................................................................1-1

Features of the Model 5625HD Switch Module ..............................................................1-3

Physical Description .......................................................................................................1-5

Switch Configuration and Management ..........................................................................1-6

SpeedView ........................................................................................................1-6

Command Line Interface ...................................................................................1-7

SNMP MIB Support ...........................................................................................1-7

TFTP Support ....................................................................................................1-7

Spanning T r ee Protocol 802.1d Support ..................................................................1-7

Support for Virtual LANs ..........................................................................................1-8

Filtering ....................................................................................................................1-8

Hot-Swapping Capability ..........................................................................................1-8

About the Model 500xBH/BHC Backplane .....................................................................1-9

LEDs ......................................................................................................................1-10

10/100 Mb/s UTP Autonegotiation Ports ................................................................1-10

Chapter 2

Planning a Network with the Model 5625HD

Switch Module

Physical Configuration Guidelines ..................................................................................2-1

Connecting to Ethernet Hubs and Network Devices ................................................2-2

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Network Configuration Examples ...................................................................................2-3

Giving a Server a Dedicated Port .............................................................................2-5

Replacing a Bridge ...................................................................................................2-6

Desktop Switch with A T M Uplinks ............................................................................2-7

Segment Switch in an Enterprise Network ...............................................................2-9

Desktop Switch and Frame-to-Cell Converter ........................................................2-10

Multi-Link Trunking .................................................................................................2-11

Default Port Configuration ............................................................................................2-12

Predefined SpeedView Configurations .........................................................................2-12

Chapter 3

Installing the Model 5625HD Switch Module

Arranging Modules in a Model 500xBH/BHC Chassis ....................................................3-2

Required T o ols and Equipment ......................................................................................3-5

Installing the Switch Module ...........................................................................................3-6

Checking LEDs ...............................................................................................................3-8

Making 10/100 Mb/s Connections ..................................................................................3-8

Connecting T e rminals and Management Stations ..........................................................3-9

Checking the Module Connection to the Backplane .....................................................3-11

Removing and Replacing the Switch Module ...............................................................3-11

Conditions for Replacing a Switch Module .............................................................3-11

Removing a Switch Module ....................................................................................3-12

Installing the Replacement Switch Module ............................................................3-13

Reconfiguring the Replacement Switch Module ....................................................3-13

Chapter 4

Troubleshooting

Preliminary Steps ...........................................................................................................4-2

Previous Module Configuration Incompatibility ...............................................................4-2

Model 5625HD Switch Module Startup Failure ...............................................................4-3

Port Connection Problems ..............................................................................................4-4

Appendix A

Technical Specifications

viii

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Appendix B

Cables and Connectors

UTP Cable Length Limitations ....................................................................................... B-1

UTP Cabling .................................................................................................................. B-2

10BASE-T/100BASE-TX MDI Ports and MDI-X Ports ................................................... B-2

UTP Cables and Connectors ......................................................................................... B-4

Using Category 5 Unshielded T w isted Pair Cables ....................................................... B-5

Using Shielded Twisted Pair Cables .............................................................................. B-6

Appendix C

LEDs

Index

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Figures

Figure 1-1. EtherSpeedII Switch Modules in a Network Center .................................1-2

Figure 1-2. Model 5625HD EtherSpeed II 24-Port Autonegotiating Switch Module ...1-5

Figure 1-3. Model 5000BH/BHC A T M/Router Backplane Bus Structure ....................1-9

Figure 1-4. Model 5005BH A T M/Router Backplane Bus Structure .............................1-9

Figure 1-5. LEDs on the Model 5625HD Switch Module ..........................................1-10

Figure 2-1. Network Example .....................................................................................2-4

Figure 2-2. Connecting Servers to Dedicated Ports ...................................................2-5

Figure 2-3. Replacing a Bridge ..................................................................................2-6

Figure 2-4. Desktop Switch with A T M Uplinks ............................................................2-8

Figure 2-5. Segment Switch in an Enterprise Network ..............................................2-9

Figure 2-6. Desktop Switch and Frame-to-Cell Converter ........................................2-10

Figure 2-7. Multi-Link T r unking Example ..................................................................2-11

Figure 3-1. Model 5000BH/BHC Chassis Backplanes ...............................................3-3

Figure 3-2. Model 5005BH Chassis Backplanes ........................................................3-4

Figure 3-3. Inserter/Extractor Levers in Vertical Position ...........................................3-6

Figure 3-4. Installing the Module ................................................................................3-7

Figure 3-5. Seating the Backplane Connectors ..........................................................3-7

Figure 3-6. Releasing the Backplane Connectors ....................................................3-12

Figure B-1. MDI-X Internal Crossover (RJ-45 Example) ........................................... B-2

Figure B-2. MDI-X to MDI-X External Crossover (RJ-45 Example) ........................... B-3

Figure B-3. 10BASE-T/100BASE-TX Ethernet UTP Crossover Cable ...................... B-4

Figure B-4. Fast Ethernet Type 1 Balun Media Adapter ............................................ B-6

Figure C-1. LED Display for the Model 5625HD Switch Module ................................ C-1

Figure C-2. RJ-45 LEDs for the Model 5625HD Switch Module ................................ C-3

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xii

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Tables

Table 2-1.

Table 3-1.

Factory Defaults for the Model 5625HD Switch Module ........................2-12

Service Port Pin Assignments ...............................................................3-10

Table B-1.

Table B-2.

10BASE-T/100BASE-TX MDI-X Port Pin Assignments .......................... B-4

Pairs in an RJ-45 Crossover Cable ......................................................... B-5

Table C-1.

LEDs on the Model 5625HD Switch Module ........................................... C-2

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xiv

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Preface

This guide provides an overview of the Nortel Networks^™Model 5625HD

EtherSpeedII 24-Port Autonegotiating Switch Module and information about

installing the module. This switch module introduces high-density Ethernet 10/

100 autonegotiation frame switching into the Model 500xBH/BHC ATM/Router

Backplane.

The Model 5625HD switch module incorporates current System 5000^™and

Centillion^™EtherSpeedII^™technologies and the features described in “Features of

the Model 5625HD Switch Module” on page 1-3.

Configuring the EtherSpeed switch modules is described in Using SpeedView 4.0

for Windows and Release Notes for SpeedView 4.1. For more information about

this topic, see “Related Publications” on page xvi.

Before You Begin

This guide is intended for local area network administrators who are responsible

for installing, configuring, or maintaining a network and have the following

background:

•

Familiarity with Ethernet network administration

Familiarity with the tools and procedures for installing and operating sensitive

electronic equipment

•

Understanding of Nortel Networks network management concepts and

terminology

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Using the Model 5625HD EtherSpeed Switch Module

Related Publications

For information about the Centillion switches, refer to the following related

publications:

•

Using SpeedView 4.0 for Windows (Bay Networks^®part number 893-891-D)

Describes this application, which is used for configuring the module.

•

Release Notes for Centillion Platform 4.1

(Bay Networks part number 203315-B)

Describes the updates to the SpeedView application for the 4.1 software

release.

•

Reference Guide for the Centillion 50/100 and Model 5000BH Switches

(Bay Networks part number 893-01006-C)

Provides reference information about switching terminology and concepts;

describes configuration examples using Centillion 50/100 and Model

500xBH/BHC switches.

•

Reference Guide for the Centillion Command Line Interface 4.0

(Bay Networks part number 893-00985-C)

Describes setup and configuration procedures for Centillion switches using

the command line interface.

Installing the Model 5000BH ATM/Router Backplane

(Bay Networks part number 893-00949-A)

Provides installation instructions for the Model 5000BH ATM/Router

Backplane in the Model 5000 chassis.

Installing the Model 5005BH ATM/Router Backplane

(Bay Networks part number 893-01056-A)

Provides installation instructions for the Model 5005BH ATM/Router

Backplane in the Model 5005 chassis.

Installation and Reference for the Model 5000 Chassis

(Bay Networks part number 893-598-C)

Provides installation instructions and maintenance information for the

Model 5000 Chassis.

xvi

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Preface

•

Installation and Reference for the Model 5005 Chassis

(Bay Networks part number 893-696-A)

Provides installation instructions and maintenance information for the

Model 5005 Chassis.

Release Notes for the Centillion Platform Release 3.2

(Bay Networks part number 896-00189-C)

You can print selected technical manuals and release notes free, directly from the

Internet. Go to support.baynetworks.com/library/tpubs/. Find the product for

which you need documentation. Then locate the specific category and model or

version for your hardware or software product. Using Adobe Acrobat Reader, you

can open the manuals and release notes, search for the sections you need, and print

them on most standard printers. You can download Acrobat Reader free from the

Adobe Systems Web site, www.adobe.com.

You can purchase selected documentation sets, CDs, and technical publications

through the collateral catalog. The catalog is located on the World Wide Web at

support.baynetworks.com/catalog.html and is divided into sections arranged

alphabetically:

•

The “CD ROMs” section lists available CDs.

The “Guides/Books” section lists books on technical topics.

The “Technical Manuals” section lists available printed documentation sets.

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Using the Model 5625HD EtherSpeed Switch Module

How to Get Help

If you purchased a service contract for your Nortel Networks product from a

distributor or authorized reseller, contact the technical support staff for that

distributor or reseller for assistance.

If you purchased a Nortel Networks service program, contact one of the following

Nortel Networks Technical Solutions Centers:

Technical Solutions Center

Telephone Number

Billerica, MA

800-2LANWAN (800-252-6926)

33-4-92-96-69-68

Santa Clara, CA

Valbonne, France

Sydney, Australia

Tokyo, Japan

61-2-9927-8800

81-3-5402-7041

xviii

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Chapter 1

Overview of the Model 5625HD Switch Module

This chapter introduces the Model 5625HD EtherSpeedII 24-Port Autonegotiating

Switch Module and includes information about the following topics:

•

Overview of the EtherSpeedII switch module (this page)

Features of the switch module (page 1-3)

Physical description of the switch module (page 1-5)

Switch configuration and management (page 1-6)

Model 500xBH/BHC backplane architecture (page 1-9)

Overview of the EtherSpeedII Switch Module

EtherSpeedII switch modules provide 10/100 megabits per second (Mb/s)

autonegotiation ports that support servers, routers, or dedicated connections to

users (Figure 1-1). The switch modules can also support multiple users through a

shared-media hub connection to a port.

Each EtherSpeedII switch module is installed in a single slot of a Model 500xBH/

BHC chassis. You can use SpeedView^™network management software to

configure and manage the modules.

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Using the Model 5625HD EtherSpeed Switch Module

Model 5625HD EtherSpeed 10/100

24-Port Autonegotiating

Switch Modules

Model 5720M ATMSpeed

MDA MCP Module

Model 5720M ATMSpeed

MDA MCP Module

BayStack Ethernet Hub

100 Mb/s

Model 5000BH

chassis

UTP 10/100 connections

to users

Router

9342EA

Figure 1-1.

EtherSpeedII Switch Modules in a Network Center

The Model 5625HD switch module provides 24 RJ-45 10/100 Mb/s

autonegotiating switched Ethernet connections for the Model 500xBH/BHC

ATM/Router Backplane for the System 500x chassis. The switch module

combines the powerful A T M capabilities of the Centillion platform with the

connectivity features of the Model 500xBH chassis.

For Ethernet connectivity, the Model 5625HD switch module RJ-45 connectors

accept Category 3 and 5 unshielded twisted pair (UTP) or shielded twisted pair

(STP) cable connections. For more information about cabling, refer to

Appendix B, “Cables and Connectors.”

Note: Category 3 UTP cable can be used only for fixed 10 Mb/s port

operation. It is not used for 100 Mb/s or 10/100 autonegotiating port operation.

1-2

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Overview of the Model 5625HD Switch Module

Features of the Model 5625HD Switch Module

The Model 5625HD switch module offers the following features:

•

Wire-speed, port-to-port, packet transfer

Single-slot design to fit into the System 500xBH/BHC chassis

Autonegotiation of Ethernet 10/100 Mb/s speed

Autonegotiation of half- or full-duplex mode on dedicated switch ports

Layer 2 MAC-based switching

Local frame switching, module-to-module switching, backplane switching,

and riser switching

•

200 MHz RISC processor

24 RJ-45 UTP network interface connectors

Front-panel LEDs to indicate module and port operational status

Port-based virtual LANs (VLANs)

Protocol-based VLANs

Protocol-sensitive VLANs classifies packets based on protocol types. Most

customers have multiple protocols per LAN segment, so a switch port needs

to support multiple VLANs based on different protocol types. This feature

allows you to separate data based on protocols and not on physical limitations.

•

IEEE 802.1Q Tag Recognition Support

The Model 5625HD switch module supports recognition of VLAN tagged

frames based on IEEE 802.1Q tags. Frames entering a Model 5625HD switch

module port that contain an 802.1Q tag are mapped to a corresponding

VLAN. Based on the final destination, the frame is sent as either an

Ethernet-type frame or an 802.1Q VLAN tagged frame. VLAN membership

is to be assigned by any combination of port with either tag or protocol.

•

Support for IEEE 802.1d Spanning Tree

Content-addressable memory (CAM) support for 8192 entries

Port steering/port mirroring

Input and output filtering supported by switching software

Hardware support for IP multicast

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Using the Model 5625HD EtherSpeed Switch Module

•

Support for RMON Management Information Base (MIB)

–

Ethernet Statistics Group

Ethernet History Group

Ethernet Alarm Group

Ethernet Event Group

•

Ability to install, remove, and replace a module in an operational chassis

(hot-swap)

Hardware Assist Multi-Protocol over ATM (MPOA)

MPOA is the ATM Forum standard that specifies a method to efficiently

transport intersubnet unicast data in a LANE environment. MPOA uses

LANE and NHRP processes to allow direct shortcut virtual channel

connections (VCCs) to be established for intersubnet communication without

requiring passage through a router. The intrasubnet communication continues

to be supported over LANE. For IP, Nortel Networks has adopted MPOA as

the standard to implement layer 3 switching in an ATM network.

•

Improved performance in segmentation and reassembly (SAR) to 3.2 gigabit

Multi-Link Trunking (MLT)

1-4

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Overview of the Model 5625HD Switch Module

Physical Description

The Model 5625HD switch module (Figure 1-2) consists of a printed circuit board

with a metal module faceplate. The module includes captive retaining screws and

inserter/extractor levers on the top and bottom of the front panel.

Metal frame

Captive retaining

screw

Power supply

Inserter/extractor

lever

LED display

matrix

Model 5000BH

backplane connector

3.2 Gb/s SAR

MAC

(Media Access

Controller)

Phy

10/100BASE-TX

ports

Common

Management

Bus connector

Circuit board

9362FA

Figure 1-2.

Model 5625HD EtherSpeed 24-Port Autonegotiating Switch

Module

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Using the Model 5625HD EtherSpeed Switch Module

There are 24 RJ-45 ports on the Model 5625HD switch module that automatically

detect speed and duplex mode. (For more information about cables, refer to

Appendix B, “Cables and Connectors.”)

Each Model 5625HD switch module occupies one slot in a Model 500x BH/BHC

chassis. You can install a maximum of 10 Model 5625HD switch modules, along

with two master control processor (MCP) switch modules, in a Model 5000BH/

BHC chassis or a maximum of five Model 5625HD switch modules, and one

MCP switch module, in a Model 5005BH chassis.

Switch Configuration and Management

You manage and configure a Model 5625HD switch module through access to an

installed MCP module in the Model 500xBH/BHC chassis with the following

network management features:

•

SpeedView for Windows 4.1 and greater

Command line interface (CLI)

Simple Network Management Protocol (SNMP) agent with System 5000 MIB

extensions

•

Trivial File Transfer Protocol (TFTP) support

SpeedView

SpeedView is a network management application that runs on Microsoft^®

Windows^®95 or Windows 98 and Windows NT^®and provides a graphical user

interface to set up your switch. SpeedView allows you to monitor and control

network traffic and to perform advanced operations such as filter configuration.

For more information about SpeedView, refer to Using SpeedView 4.0 for

Windows and Release Notes for SpeedView 4.1.

Optivity Network Management System^™(NMS) provides enterprise-wide

configuration and monitoring support for the Model 500xBH/BHC chassis

switches. Configuration support is provided using SpeedView, which is integrated

with Optivity NMS. Expanded View^™, OmniView^™, Network Atlas^™, Threshold

Manager^™, and other Optivity^®applications provide comprehensive monitoring

and troubleshooting support. For more information about Optivity network

management software, refer to your Optivity documentation.

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Overview of the Model 5625HD Switch Module

Command Line Interface

The CLI provides an out-of-band interface for the initial setup of basic

configuration parameters such as IP address and bridging mode. For more

information about the CLI structure and commands, refer to Reference Guide for

the Centillion Command Line Interface.

SNMP MIB Support

The System 5000BH/BHC MCP modules support an SNMP-compatible agent

with private MIB extensions. Built-in SNMP agent support ensures compatibility

with existing network management tools. The MCP modules support MIB-I and

MIB-II (RFC 1213) standards that provide access to detailed management

statistics.

Using SpeedView, you can configure SNMP traps to be generated automatically

for conditions such as unauthorized access attempts or changes in operating status

on individual ports.

TFTP Support

TFTP is a supported Transmission Control Protocol/Internet Protocol (TCP/IP)

service used to download software and configuration information to the MCP

module memory. TFTP allows you to transfer an updated switch agent and

configuration files from a remote server to flash memory. You can perform a

transfer over the network or through a serial connection to the installed MCP

module.

Spanning Tree Protocol 802.1d Support

The Model 5625HD switch module software supports the Spanning Tree Protocol

as specified in the IEEE 802.1d standard. The Spanning Tree Protocol is

implemented to detect and eliminate logical loops in a bridged or switched

network. When multiple paths exist, the spanning tree algorithm configures the

network so that a bridge or switch uses only the most efficient path. If that path

fails, the protocol automatically reconfigures the network to make another path

become active, thus sustaining network operations.

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Using the Model 5625HD EtherSpeed Switch Module

Support for Virtual LANs

Using the Model 5625HD switch module, you can group one or more physical

ports to form a virtual LAN that constitutes a single broadcast domain.

Virtual LANs (VLANs) are formed when broadcast domains are configured

across multiple switches. Each Ethernet segment is an independent physical

segment with its own collision domain, but all segments within a VLAN appear to

the user as a broadcast domain.

Filtering

Filtering capabilities for the Model 5625HD switch module are implemented in

system hardware and controlled by system software. Refer to the appropriate

Centillion release guides for descriptions of the supported filtering capabilities,

features, and availability.

Hot-Swapping Capability

A Model 5625HD switch module can be inserted into or removed from a chassis

without interrupting service to other modules within the Model 500xBH/BHC

chassis. This feature is called “hot-swapping.”

Caution: Be sure to remove cables from all ports on the module, or disable all

the ports through the management interface, prior to hot-swapping.

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Overvi ew of the Model 5625HD Switch Module

About the Model 500xBH/BHC Backplane

The Model 500xBH/BHC ATM/Router Backplane integrates the two bus

technologies shown in Figure 1-3 and Figure 1-4.

Note: The Model 5000BH and 5000BHC backplanes are identical with the

exception of an additional shared 100 Mb/s backplane on the Model

5000BHC. The Model 5625HD switch module does not connect to these

shared backplanes. The Model 5625HD switch module can be used with the

Model 5000BH and 5000BHC backplanes without altering the module’s

performance.

PPX router bus

Centillion ATM bus

Slot

10 11 12 13

6750EC

Figure 1-3.

Model 5000BH/BHC ATM/Router Backplane Bus Structure

PPX router bus

Centillion ATM bus

Slot

7849EA

Figure 1-4.

Model 5005BH ATM/Router Backplane Bus Structure

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Using the Model 5625HD EtherSpeed Switch Module

LEDs

LEDs on the module indicate port operating status and speed (Figure 1-5). The

numbers on the LEDs correspond to the port numbers. For more information

about the operation of the LEDs, refer to Appendix C, “LEDs.”

5625HD

10/100 Switch Host

Annunciator

Port Status

100 13 100

100 14 100

100 15 100

100 16 100

100 17 100

100 18 100

100 19 100

100 20 100

100 21 100

Port number

Port speed

Port LEDs

10 100 22 100

11 100 23 100

12 100 24 100

9341EA

Figure 1-5.

LEDs on the Model 5625HD Switch Module

10/100 Mb/s UTP Autonegotiation Ports

A Model 5625HD switch module contains 24 10/100 Mb/s autonegotiating

Ethernet ports with shielded RJ-45 connectors. The RJ-45 connectors accept

Category 3 and 5 UTP or STP cable and are wired as MDI-X ports to connect end

stations to patch panels, without using crossover cables. See Appendix B, “Cables

and Connectors,” for information about wiring and pin assignments.

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Chapter 2

Planning a Network with the Model 5625HD

Switch Module

Installing the Model 5625HD EtherSpeedII 24-Port Autonegotiating Switch

Module in a network can significantly improve LAN performance. This chapter

provides information to help you plan a network that uses this module. The

chapter includes the following topics:

•

Physical configuration guidelines (this page)

Typical network configuration examples (page 2-3)

Factory-set and predefined configurations (page 2-12)

Physical Configuration Guidelines

Follow the basic guidelines in Appendix A, “Technical Specifications,” and

Appendix B, “Cables and Connectors,” when you plan a network using the

Model 5625HD switch module.

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Using the Model 5625HD EtherSpeed Switch Module

Connecting to Ethernet Hubs and Network Devices

You connect the ports of the Model 5625HD switch module to the front panel,

wired as MDI-X connections. This wiring allows you to use a straight-through

cable between the Model 5625HD switch module and the patch panel.

To connect the ports on the patch panel to another Ethernet switch or an Ethernet

hub, follow these guidelines:

•

Personal computers (PCs) and servers typically have network interface

controllers (NICs) that are configured as MDI connections. To connect these

devices, use a straight-through cable.

•

Hubs and other switches typically have connectors that are configured as

MDI-X. Some hubs and switches have ports that are set by a toggle switch for

either MDI or MDI-X operation.

— To connect a port set for MDI-X to the Model 5625HD switch module

port, use a crossover cable.

— To connect a port set for MDI to the Model 5625HD switch module port,

use a straight-through cable.

For connector specifications for MDI-X ports, refer to Appendix B, “Cables and

Connectors.”

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Planning a Network with the Model 5625HD Switch Module

Network Configuration Examples

The Model 5625HD switch module is an adaptable switch suitable for use in

wiring closets or network centers in conjunction with the Model 500xBH/BHC

chassis. Figure 2-1 shows an example of Model 5625HD switch modules in a

sample network configuration.

This section describes the following Ethernet switching applications:

•

Dedicated ports for servers (page 2-5)

Replacement for a bridge port (page 2-6)

Desktop switch with ATM uplinks in a wiring closet (page 2-7)

Segment switch in a wiring closet with ATM uplinks to a network center

switch (page 2-9)

•

Desktop switch and frame-to-cell converter (page 2-10)

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Using the Model 5625HD EtherSpeed Switch Module

Model 5625HD

Switch Modules

Model 5000BH Chassis

Redundant,

load-balanced

risers to closets

Network

Center

Model 5000BH Chassis

Workgroup

servers

ATM

Router

ATM

10/100 Mb/s

Redundant,

network center

switches

VLAN D

Enterprise servers

9380EA

Figure 2-1.

Network Example

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Planning a Network with the Model 5625HD Switch Module

Giving a Server a Dedicated Port

Moving a server from a 10 Mb/s shared-media connection to a dedicated port

on the Model 5625HD switch module improves server response time and

increases throughput capacity. For even higher performance, the server could

be upgraded to 100 Mb/s and the Model 5625HD switch module would

autonegotiate for 100 Mb/s.

In Figure 2-2, the “Before” example shows clients and servers sharing the same

network segment. The “After” example shows the same clients assigned to

different segments through a shared hub (either 10/100 Mb/s or directly

connected) and the original servers connected to switch ports on a Model

500xBH/BHC chassis. In addition, two servers have been added through 10/100

Mb/s connections.

Before

Servers

Clients

Segment

Model 5625HD EtherSpeed 24-Port

10/100 Autonegotiating

Switch Modules

After

Model 5720M ATMSpeed

MDA MCP Module

10 Mb/s

Servers

10 Mb/s

100 Mb/s

Segment

Servers

10 Mb/s

clients

100 Mb/s

clients

10 or 100 Mb/s

clients

9344EA

Figure 2-2.

Connecting Servers to Dedicated Ports

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Using the Model 5625HD EtherSpeed Switch Module

Replacing a Bridge

Using a switch instead of a bridge in the network can increase the aggregate

network bandwidth. The “After” example in Figure 2-3 shows one server

connected to a dedicated 10BASE-T port. It also shows the other server and

additional clients attached using dedicated 100BASE-TX connections. This

network configuration allows you to have switched 10 Mb/s Ethernet along with

segmented 10 Mb/s Ethernet to conserve ports.

Before

Servers

Clients

Segment

Bridge

Model 5625HD EtherSpeed 24-Port

10/100 Autonegotiating

Switch Modules

After

Model 5720M ATMSpeed

MDA MCP Module

10 Mb/s

Server

100 Mb/s

Server

Segment

10 Mb/s

clients

100 Mb/s

clients

10 or 100 Mb/s

clients

9345EA

Figure 2-3.

Replacing a Bridge

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Planning a Network with the Model 5625HD Switch Module

Desktop Switch with ATM Uplinks

In the example shown in Figure 2-4, the Model 5625HD switch module provides

up to 24 RJ-45 switched Ethernet (10/100 Mb/s) ports to connect to desktops, with

redundant high-speed ATM OC-3c and OC-12c ports to connect to an ATM

backbone. This network configuration can support small to large wiring closets.

Figure 2-4 on page 2-8 shows a sample network providing ATM uplinks to a

Model 5000BH/BHC chassis. Servers are connected to the network through the

Model 5000BH/BHC chassis, and network stations are connected to the 10/

100BASE-T ports on the Model 5625HD switch modules. The chassis are

dual-homed with ATM OC-3c and OC-12c uplinks to the Model 5000BH/BHC

chassis. Model 5000BH/BHC chassis can be interconnected with multiple ATM

links.

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Using the Model 5625HD EtherSpeed Switch Module

Data Center

Model 5000BH chassis

Servers

100 Mb/s

ATM

100 Mb/s

ATM

Wiring Closet

ATM ATM ATM

Model 5000BH

chassis

10 Mb/s

100 Mb/s

10 Mb/s

100 Mb/s

10 or 100 Mb/s attached clients

9346EA

Figure 2-4.

Desktop Switch with ATM Uplinks

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Planning a Network with the Model 5625HD Switch Module

Segment Switch in an Enterprise Network

To achieve a gradual transition from shared media to switched networks, you can

use the Model 5625HD switch module to aggregate traffic from stations

connected to one or more hubs. Figure 2-5 shows such a network with switches

used to connect shared-media hubs to a backbone switch. Stations connected to

the Model 5000BH/BHC switch are associated with different segments through

the configuration switching feature.

Data Center

Model 5000BH Chassis with shared-media modules

Model 5625HD EtherSpeed 24-Port 10/100

Autonegotiating Switch Modules

ATM Router

Servers

ATM

100 Mb/s

10 Mb/s

Wiring Closet

100 Mb/s

10 Mb/s

Shared-media

Model 5000BH

Chassis

BayStack

Hubs

Clients

9347EA

Figure 2-5.

Segment Switch in an Enterprise Network

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Using the Model 5625HD EtherSpeed Switch Module

Desktop Switch and Frame-to-Cell Converter

For wiring closets with higher densities and lower bandwidth requirements, you

can use the Model 5625HD switch module to aggregate traffic from other

stackable switch products such as the BayStack 301 and BayStack 350T switches

(providing frame switching) to an ATM backbone (providing cell switching). The

stackable switches and the 24 RJ-45 10/100 Mb/s switched Ethernet ports on the

Model 5625HD switch module provide desktop connectivity.

Figure 2-7 shows a network with a Model 5625HD switch module used to connect

BayStack 301 and 350T switches to the Model 5000BH/BHC chassis in a data

center. The 10/100 Mb/s ports on the Model 5625HD switch module provide

high-speed connections to the BayStack^™switches. The Model 5625HD switch

module provides switched 10 Mb/s or 100 Mb/s capability for higher-bandwidth

desktop connectivity and can upgrade to 100 Mb/s with a client NIC upgrade.

Data Center

Model 5000BH chassis

Server

100 Mb/s

ATM

Wiring Closet

Model 5000BH chassis with

Model 5625HD EtherSpeed 24-Port 10/100

Autonegotiating Switch Modules

100 Mb/s

BayStack 301

switch

BayStack 350T

switches

Autosense

Switch

Autosense

Switch

10/100 Mb/s

clients

9348EA

Figure 2-6.

Desktop Switch and Frame-to-Cell Converter

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Planning a Network with the Model 5625HD Switch Module

Multi-Link Trunking

Multi-Link Trunking (MLT) allows up to four physical connections for the same

media type and speed to be grouped and treated as a single logical link. MLT

improves performance between two switches or between a switch and a server.

MLT allows data to be carried over multiple 100 Mb/s full-duplex links connected

to the same device, thus improving performance. Figure 2-7 shows that

connecting multiple BayStack 450 ports into a Model 5625HD switch module

allows the data to load share across those multiple ports, and overall performance

is improved.

Model 5005BH Chassis

BayStack 450-24T

100 Mb/s

MLT

connection

9381EA

Figure 2-7.

Multi-Link Trunking Example

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Using the Model 5625HD EtherSpeed Switch Module

Default Port Configuration

The Model 5625HD switch module is shipped preconfigured with the settings

listed in Table 2-1.

Table 2-1.

Parameter

Factory Defaults for the Model 5625HD Switch Module

Factory Default

Configurable Options

Switching mode

Spanning Tree Protocol

State

Transparent

None, IEEE

Enable/Disable

Auto 10/100

2–32

None

Enable

Filters

Disable (none)

Port speed/display

Spanning tree group

Priority

Auto

128

0–255

Path cost

1–65535

Predefined SpeedView Configurations

SpeedView offers several predefined configurations. You may simply choose one

of these without having to configure individual ports. Predefined configurations

are available for the following applications:

•

All transparent switching with no Spanning Tree support

All transparent switching with IEEE 802.1d Spanning Tree support

You must enter additional configuration information if you are using any of the

following features:

•

ATM

VLANs

Filtering

Combinations of bridging modes and Spanning Tree Protocol not offered as

defaults

Instructions for using these features appear in Using SpeedView 4.0 for Windows

and Release Notes for SpeedView 4.1.

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Chapter 3

Installing the Model 5625HD Switch Module

This chapter describes how to install a Model 5625HD EtherSpeedII 24-Port

Autonegotiating Switch Module in the Model 500xBH/BHC chassis and includes

the following information and procedures:

•

Arranging Model 5625HD switch modules in a Model 500xBH/BHC chassis

(this page)

•

Using required tools for installation (page 3-5)

Installing a switch module (page 3-6)

Checking module LEDs (page 3-8)

Making 10/100 Mb/s connections (page 3-8)

Connecting terminals and management stations (page 3-9)

Checking the module connection to the backplane (page 3-11)

Removing and replacing a switch module (page 3-11)

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Using the Model 5625HD EtherSpeed Switch Module

Arranging Modules in a Model 500xBH/BHC Chassis

The Model 5000BH ATM/Router Backplane has two Centillion ATM buses and a

PPX bus to accommodate switch and router modules. The Centillion ATM buses

span two slot ranges in a Model 5000BH/BHC chassis: slots 2 through 7 and 8

through 13. When you install a Model 5625HD switch module in one of these slot

ranges, you must also install an MCP switch module (such as the Model 5720M

ATMSpeed^™MCP module) in the same range of slots. You can attach up to six

System 5000 switch modules (one of which must be an MCP module) to each

Centillion ATM bus in a Model 5000BH/BHC chassis.

The PPX bus spans slots 2 through 13. A router module may be installed in any of

these slots. Router modules for the Model 5000BH ATM/Router Backplane

include the Model 5380 Ethernet Router Module, the Module 5580 Token Ring

Router Module, and the Model 5782 Centillion Multiprotocol Engine Module.

Any slot designated for switch modules can also be used for a standard Ethernet,

token ring, or FDDI, or ATM module with the appropriate backplane(s) installed

in the chassis.

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Installing the Model 5625HD Switch Module

Figure 3-1 shows the logical relationship between the Model 5000BH ATM/

Router Backplane and shared-media backplanes in a Model 5000BH/BHC

chassis.

Slot 2

Slot 13

PPX bus (2–13)

Model

5000BH

backplane

Centillion

ATM bus (2–7, 8–13)

Fast Ethernet (1–14)

Model

5000BHC

backplane

Power

Common

management bus

Model

5000BH

backplane

Ethernet (1–14)

Token ring

(1–14 or 1–7, 8–14)

Slot 1

Slot 14

8662EA

Figure 3-1.

Model 5000BH/BHC Chassis Backplanes

Note: The Model 5000BH and Model 5000BHC backplanes are identical with

the exception of an additional shared 100 Mb/s backplane on the Model

5000BHC. The Model 5625HD switch module does not connect to this shared

backplane. The Model 5625HD switch module can be used with the Model

5000BH and Model 5000BHC backplanes without altering the module’s

performance.

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The Model 5005BH ATM/Router Backplane (see Figure 3-2) has a single

Centillion ATM bus and PPX^®bus. The Centillion ATM bus spans slots 2 through

7 in the Model 5005BH chassis. When you install a System 5000 Model 5625HD

switch module in one of these slot ranges, you must also install an MCP switch

module (such as the Model 5720M ATMSpeed MCP module) in the same range of

slots. You can attach up to six System 5000 switch modules (one of which must be

an MCP module) in a Model 5005BH chassis.

The PPX bus spans slots 2 through 7. A router module may be installed in any of

these slots. Router modules for the Model 5000BH ATM/Router Backplane

include the Model 5380 Ethernet Router Module, the Module 5580 Token Ring

Router Module, and the Model 5782 Centillion MultiProtocol Engine Module.

Any slot designated for switch modules can also be used for a standard Ethernet,

token ring, or FDDI, or ATM module with the appropriate backplane(s) installed

in the chassis. Slot 1 is reserved for the clock module.

Figure 3-2 shows the logical relationship between the Model 5005BH ATM/

Router Backplane and shared-media backplanes in a Model 5005BH chassis.

Slot 2

Slot 7

PPX bus (2–7)

Model

5005BH

backplane

Centillion

ATM bus (2–7)

Power

Common

management bus

Model

5005BH

backplane

Ethernet (1–8)

Token ring (1–8)

Slot 1

Slot 8

8749EA

Figure 3-2.

Model 5005BH Chassis Backplanes

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Installing the Model 5625HD Switch Module

Required Tools and Equipment

You need the following tools and equipment to install a Model 5625HD switch

module:

•

Medium flat-tip screwdriver

Grounded antistatic mat and wrist strap or discharge leash

Caution: The System 5000 equipment uses electronic components that are

sensitive to static electricity. Static discharge from your clothing or other

fixtures around you can cause damage. Take all possible precautions to prevent

static discharge damage when working with printed circuit boards.

Place each module on a grounded antistatic mat until you are ready to install

the module. If you do not have an antistatic mat, wear a wrist strap or

discharge leash to free yourself of static before touching any of the modules, or

free yourself of static by touching the metal chassis before handling the

module.

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Using the Model 5625HD EtherSpeed Switch Module

Installing the Switch Module

To install and secure the Model 5625HD switch module in the chassis:

1. Remove the filler panel from the chassis slot where you intend to install

the module.

2. Extend the switch module inserter/extractor levers to the vertical position

(Figure 3-3).

4689

Figure 3-3.

Inserter/Extractor Levers in Vertical Position

Note: These instructions illustrate installing a Model 5625HD switch module

in a Model 5000BH/BHC chassis. The instructions also apply to a Model

5005BH chassis.

3. Align the top and bottom edges of the metal printed circuit board carrier

with the slot card guides at the top and bottom of the slot.

4. Slide the switch module into the chassis until you feel it engage the

backplane (Figure 3-4).

The inserter/extractor levers should still be in the vertical position and in

contact with the front of the chassis. Do not push the switch module all the

way into the chassis.

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Installing the Model 5625HD Switch Module

3649.1

Figure 3-4.

Installing the Module

5. Rotate the inserter/extractor levers in toward the center of the switch

module front panel to seat the backplane connectors (Figure 3-5).

Model 5000

4690.2

Figure 3-5.

Seating the Backplane Connectors

6. Use the flat-tip screwdriver to tighten the captive retaining screws at both

ends of the switch module front panel.

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Using the Model 5625HD EtherSpeed Switch Module

Checking LEDs

Immediately after you have installed a Model 5625HD switch module, watch the

LEDs on the front panel. If the board is installed and functioning properly, the

following LED color sequence occurs:

•

The annunciator lights amber and then lights green.

The Port Status LEDs light green or amber for each port showing link status

or port management disabled status.

•

Each Port Speed LED lights green when you have a 100 Mb/s Ethernet

connection and is off when you have a 10 Mb/s connection.

See Appendix C, “LEDs,” for the LED definitions.

Making 10/100 Mb/s Connections

The 10/100 Mb/s jacks on the Model 5625HD switch module accept standard

UTP or STP cable connections.

To connect network devices to the 10/100 Mb/s ports on the Model 5625HD

switch module, follow these guidelines:

•

Use Category 3 or 5 UTP or STP cable with RJ-45 connectors for the ports on

the Model 5625HD switch module.

Use straight-through cables to connect the network interface card (NIC) in a

PC workstation or server. These devices typically have MDI connectors.

Use a crossover cable to connect to ports configured as MDI-X (such as

Ethernet hubs).

For more information about cables, connectors, and connector pin assignments,

see Appendix B, “Cables and Connectors.”

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Installing the Model 5625HD Switch Module

Connecting Terminals and Management Stations

This section provides information about connecting terminals or PCs to the

service port on the Model 500xBH/BHC chassis. For information about

connecting a management station to an MCP module, refer to the using guide

shipped with that module.

Refer to Using SpeedView 4.0 for Windows and Release Notes for SpeedView 4.1

for information about advanced configuration and monitoring of the switch.

To connect a terminal to the Model 500xBH/BHC chassis service port, you need

the following equipment:

•

A TTY-compatible terminal or a portable computer with a serial port and the

ability to emulate a TTY-compatible terminal. The terminal communication

parameters should be set for:

— 9600 baud (default)

— 8 data bits

— No parity

— 1 stop bit

— No handshaking

— Standard ASCII code

•

An RS-232 modem cable with a female DB-9 connector to connect to the

service port on the chassis front panel. The cable should use the service port

pin assignments that are specified in Installation and Reference for the

Model 5000 Chassis and Installation and Reference for the Model 5005

Chassis.

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Using the Model 5625HD EtherSpeed Switch Module

The other end of the cable must have a connector appropriate to the serial port

on your computer or terminal. (Most terminals or computers use a male DB-9

or DB-25 connector.) See Table 3-1 for the pin assignments.

Note: RS-232 signals on other pins (such as DTR, CTS, and CD) are ignored.

Table 3-1.

Service Port Pin Assignments

To Service Port

Terminal

DB-9 Pins

DB-25 Pins

Function

DB-9 Pins

Function

Receive data

Transmit data

Signal ground

Transmit data

Receive data

Signal ground

To connect the terminal to the chassis service port:

1. Connect the RS-232 cable to the terminal (or a computer in terminal-

emulation mode) and to the chassis service port.

2. Set the terminal communication parameters as described earlier in this

section.

3. Turn on the terminal; adjust contrast and brightness as required.

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Installing the Model 5625HD Switch Module

Checking the Module Connection to the Backplane

Note: The Model 5625HD switch module communicates through the MCP

rather than the common management bus (CMB). Modules without the CMB

interface do not display on the Slot Selection menu, and there is no way to

verify that they are connected to the backplane using the service port menus.

Removing and Replacing the Switch Module

This section provides the following information and procedures:

•

Conditions for replacing a Model 5625HD switch module

Removing a Model 5625HD switch module

Installing the replacement Model 5625HD switch module

Conditions for Replacing a Switch Module

The following hardware conditions indicate that the switch module needs to be

replaced:

•

The annunciator on the front panel remains off. This condition indicates that a

hardware reset is active or that the module is not receiving +5 volt power.

•

The annunciator remains amber. This condition indicates that the module has

failed to boot.

For information about using LEDs to troubleshoot an EtherSpeed switch module,

see Appendix C, “LEDs.”

For information about troubleshooting other System 500x modules, refer to the

using guide for the specific module.

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Using the Model 5625HD EtherSpeed Switch Module

Removing a Switch Module

To remove a Model 5625HD switch module from the chassis:

Note: Be sure to remove cables from all ports on the module, or disable all the

ports through the management interface, prior to hot-swapping.

1. Use a flat-tip screwdriver to loosen the two captive retaining screws that

secure the module to the chassis.

These screws are spring-loaded to pop outward when they are unscrewed from

the chassis. The screws are held in place on the module front panel by locking

washers.

2. Rotate the top and bottom inserter/extractor levers away from the center

of the switch front panel to release the module from the backplane

connectors (Figure 3-6).

Model 5000

Captive retaining

screw

Inserter/extractor

lever

3249.10

Figure 3-6.

Releasing the Backplane Connectors

3-12

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Installing the Model 5625HD Switch Module

3. Slide the Model 5625HD switch module out of the chassis.

Hold the front panel with one hand while you support the bottom of the switch

module with the other hand.

4. Place the Model 5625HD switch module on an antistatic mat until you are

ready to put it back into the chassis.

5. If you are not installing another Model 5625HD switch module, install a

filler panel over the empty slot.

Installing the Replacement Switch Module

To install the replacement switch module, follow the procedure described in

“Installing the Switch Module” on page 3-6.

Reconfiguring the Replacement Switch Module

The Model 5625HD switch module keeps the configuration of an identical

replacement module. If the replacement is not a Model 5625HD switch module,

the module needs to be reconfigured after it has been replaced. Follow the

procedure described in “Installing the Switch Module” on page 3-6.

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Chapter 4

Troubleshooting

This chapter provides suggestions for troubleshooting problems with a Model

5625HD EtherSpeedII 24-Port Autonegotiating Switch Module and includes the

following topics:

•

Preliminary steps in troubleshooting (page 4-2 )

Incompatibility with the configuration of a previously installed module

(page 4-2)

•

Startup failure in the Model 5625HD switch module (page 4-3)

Problems with the port connection (page 4-4)

To expedite support when you call Nortel Networks, please have the following

information ready:

•

Hardware configuration

Software configuration (including the image file version number and

SpeedView version number)

•

Network diagram

Module or switch part number and serial number for the suspected module

Brief description of the problem

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Using the Model 5625HD EtherSpeed Switch Module

Preliminary Steps

If you suspect problems with a newly installed Model 5625HD switch module,

start troubleshooting by checking the following items:

•

Check all power cable connections and power sources.

Check network cable connections to be sure connectors are properly seated.

Make sure the cables are the correct type, with correctly wired connectors.

Check the LEDs for indication of link status.

Previous Module Configuration Incompatibility

Symptom: A module in a powered-on chassis fails to start up.

The slot the module occupies in the System 500xBH/BHC chassis may have had a

different module type installed in it previously.

The Model 5625HD switch module keeps the configuration of an identical

replacement module. If the replacement is not a Model 5625HD switch module,

the module needs to be reconfigured after it has been replaced. Follow the

procedure described in “Installing the Switch Module” on page 3-6.

To check for possible incompatibility in module type:

1. Connect a SpeedView management station to the MCP port on the

switch, using either the direct connection or the modem connection.

This procedure is described in Using SpeedView 4.0 for Windows and Release

Notes for SpeedView 4.1.

2. Select the Map menu.

If this module is displayed with all ports disabled, the MCP module is not able

to manage this module because there is no stored configuration information

about the module. You must enable the ports and download the new

configuration to the MCP module.

After you download the new configuration, you are prompted to reset the

switch.

4-2

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Troubleshooting

Model 5625HD Switch Module Startup Failure

Symptom: All LEDs are off on the Model 5625HD switch module.

This condition indicates that the links on all ports are not functioning.

To resolve the problem:

1. Use the CLI, SpeedView, or other network management tool to verify

port status.

2. Ensure that all modules in the chassis are firmly seated and that the

retaining screws have been tightened.

3. Remove and reinsert the failing module.

If the problem persists, contact Nortel Networks customer support. Be ready to

give the service representative the information listed on page 4-1.

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Using the Model 5625HD EtherSpeed Switch Module

Port Connection Problems

Symptom: The LED on an Ethernet port is off.

If an LED does not light when traffic is present, there may be a port connection

problem.

To resolve the problem:

1. Verify whether or not the port is enabled, using SpeedView or the CLI.

a. From the Map window in SpeedView, choose Switch and then choose

Configure.

When the configuration information has been downloaded to the

management station, check the port state. The port state should be either

enabled or disabled.

b. From the Map window, choose Statistics.

When the statistics information has been downloaded to the management

station, check the port state. If the port state is Down, the port is receiving

no link signal or it is disabled.

c. From a configuration terminal connected to the serial port on the

switch, access the CLI.

Use the show port command and specify the module number and port

number for the suspected port. When the port information is displayed,

verify that port_state is up and SPTstate is forwarding.

2. Verify that the cable is correctly connected.

Disconnect and reseat the cable at the Model 5625HD switch module port and

at the patch panel or punchdown block. Check the port LED for a change in

status.

4-4

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Troubleshooting

3. Verify that the port is transmitting and receiving data frames.

a. Check the green RJ-45 LED, which indicates a data exchange.

Refer to Appendix C, “LEDs,” for additional information.

b. From the Map window in SpeedView, choose Statistics.

When the statistics information is displayed at the management station,

verify that the octet counts for transmit and receive are incrementing.

Also verify that the frame counts for transmit and receive unicast traffic

and for multicast traffic are incrementing.

c. From a configuration terminal connected to the serial port on the

switch, access the CLI.

Use the show port command and specify the module number and port

number for the suspected port. Verify that the following counters are

incrementing:

•

InOctet

OutOctet

InUcastPkt

OutUcastPkt

MulticastTransmittedOk

MulticastReceivedOk

BroadcastTransmittedOk

BroadcastReceivedOk

4. If the port still fails, try inserting it into another switch network or

shared segment.

If the port functions correctly, check the status of the first switch network

or shared segment.

If the port fails to function, contact Nortel Networks customer support. Be

ready to give the service representative the information listed on page 4-1.

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Appendix A

Technical Specifications

This appendix provides technical specifications for the Model 5625HD

EtherSpeedII 24-Port Autonegotiating Switch Module. For connector pin

assignments and other information about cables, see Appendix B, “Cables and

Connectors.”

Industry Protocols and

Standards

ISO/IEC 8802-3 (ANSI/IEEE 802.3) Fifth Edition

1996-07-29

Clause 4: Medium Access Control and

Clause 14: Twisted-Pair Medium Attachment Unit

(MAU) and Baseband Medium Type 10BASE-T.

IEEE Std. 802.3u-1995, Media Access Control

(MAC) Parameters, Physical Layer, Medium

Attachment Units, and Repeater for 100 Mb/s

Operation, Type 100BASE-T (Clauses 21-30).

Interface Options

Data Rates

RJ-45 connectors (8-pin modular)

10 Mb/s and 100 Mb/s switched Ethernet

Autonegotiating Features

10/100 Mb/s speed autonegotiation

Half/Full Duplex autonegotiation

Microprocessor

64-bit MIPS 5000 series processor, 200 MHz per

module

Memory

Processing

8 MB

Dynamically Allocated Buffer Pool 16 MB

CAM (Content Addressable

Memory)

8,192 entries

SIMM Flash Memory

4 MB

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Using the Model 5625HD EtherSpeed Switch Module

Electrical Specifications

Power Consumption

Thermal Rating

57 W (max)

194.5 BTU/hr (max)

Physical Specifications

Dimensions

(L) 10.5 in. x (W) 12.25 in. x (H) 1.0 in.

[(L) 26.7 cm x (W) 31.7 cm x (H) 2.5 cm

Weight

Module alone: 4 lbs, 14 oz. (2.05 kg)

Packaged: 6 lbs (2.7 kg)

Environmental Specifications

Operating Temperature

Storage Temperature

Operating Humidity

Storage Humidity

Operating Altitude

Free Fall/Drop

5° to 40° C

-25° to 70° C

85% maximum relative humidity, noncondensing

95% maximum relative humidity, noncondensing

10,000 ft (3,000 m) (max)

ISO 4180-s, NSTA 1A

IEC 68-2-6/34

Vibration

IEC 68-2-27-29

Shock/Bump

Electromagnetic Emissions

Meets requirements of

FCC Part 15, Subpart B, Class A

EN 55 022 (CISPR 22:1985), Class A

VCCI Class 1 ITE

Electromagnetic Susceptibility

Electrostatic Discharge (ESD)

Radiated Electromagnetic Field

EC 801-2, Level 2

EC 801-4, Level 2

Electrical Fast Transient/Burst

Electrical Surge

IEC 801-5, Levels 1 and 2

Complies with EN 50082-1 (European CE mark

requirements)

A-2

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Technical Specifications

Safety Agency Approvals

International Electrical Code of 950 (IEC 950)

Underwriters Laboratories (UL 1950)

Canadian Standards Association (C22.2 No. 950)

or Bi-national Standard (UL1950 and C22.2 No. 950)

equivalent to UL and cUL

European Union (EN60950)

Norma Oficial Mexicana (NOM-19-SCFI)

Meets UL-94-V1 (PWB) flammability requirements

Mean Time Between Failure

347,000 hours*

(MTBF)

Cabling Specifications

(Model 5625HD)

Types: Category 3 or 5 unshielded twisted pair

(UTP) or shielded twisted pair (STP)

Note: Category 3 UTP cable may be used only for

10 Mb/s port operation, not for 100 Mb/s or 10/100

Mb/s autonegotiating port operation where the

negotiated rate may be 100 Mb/s.

Maximum Length: 100 meters (cable plant and patch

cables inclusive)

Connector Types: Shielded RJ-45 connectors

*See the Disclaimer on page ii of this manual.

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Appendix B

Cables and Connectors

This appendix provides general information about 10BASE-T and 100BASE-TX

cabling and connections.

UTP Cable Length Limitations

All 10BASE-T/100BASE-T ports on the Model 5625HD switch module support

the maximum lengths for twisted pair cable that are specified in the IEEE 802.3

10BASE-T/100BASE-TX Ethernet specification. This specification defines the

maximum segment length in terms of the performance characteristics of the cable

media, which can vary according to cable type. In most networks, cable runs are

less than 100 meters (m) to ensure that data is not distorted or lost.

For UTP links of #24 AWG cable between a network interface (transceiver or

10BASE-T/100BASE-TX network interface controller) and a hub or between

hubs, these performance specifications are normally met by a cable run of

100 m (330 ft) or less, including any patch cables and cross-connect cables.

The 10BASE-T/100BASE-TX standard specifies this length as a design objective.

The Model 5625HD switch module is designed to support a maximum cable

length of 100 m.

Your cable plant can contain Category 3 or 5 UTP cables, up to a maximum length

of 100 m between the end station and the Model 5625HD switch module. Use an

appropriate patch cable to connect your cable to this module. For additional

information, refer to Appendix A in Planning and Managing a System 5000

Network (see “Related Publications” in the Preface).

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Using the Model 5625HD EtherSpeed Switch Module

UTP Cabling

A 10BASE-T/100BASE-TX connection between two ports requires two twisted

pairs. The transmit data (TD) pair carries data out from the port transmitter. The

receive data (RD) pair carries data to the port receiver.

The 10BASE-T/100BASE-TX TD and RD circuits must be connected as follows:

•

Individual conductors must provide pin-to-pin continuity (TD+ to RD+,TD-

to RD-, and so on) between the Model 5625HD switch module port and the

attached MDI port on a transceiver or other network interface.

•

Each signal circuit must use a single twisted pair throughout the link.

Standard Ethernet patch panels and cables provide the previous features.

10BASE-T/100BASE-TX MDI Ports and MDI-X Ports

In the 10BASE-T/100BASE-TX standard, MDI is the electrical and mechanical

interface specified for the 10BASE-T/100BASE-TX transceiver or network

interface card connector (for example, on the station at the end of a link). MDI

port pins 1 and 2 carry the transmit (TD) signal, and pins 3 and 6 carry the receive

(RD) signal as shown in Figure B-1.

Transmit

Receive

Twisted pairs

Receive

Transmit

MDI port network

interface card or

transceiver port

Host module MDI-X port

(transmit and receive

connections reversed)

2008EF

Figure B-1.

MDI-X Internal Crossover (RJ-45 Example)

B-2

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Cables and Connectors

The Model 5625HD switch module receives data on pins 1 and 2 and transmits its

data on pins 3 and 6. The host module ports implement this MDI standard

crossover internally and are called MDI-X (the X for crossover), as shown in

Figure B-1. All Model 5625HD switch module 10BASE-T ports are MDI-X

standard.

Two simple rules govern all usual RJ-45 connections from each Model 5625HD

switch module 10BASE-T/100BASE-TX port to the 10BASE-T/100BASE-TX

port on another device:

•

A straight-through cable (MDI to MDI-X) is customarily used for connection

to a station NIC, to a transceiver, or to a cable plant patch panel.

•

A crossover cable or adapter (MDI-X to MDI-X; as shown in Figure B-2) is

customarily used for connection to another switch or hub port.

Twisted

pairs

Receive

Transmit

MDI-X port

2007.4

Figure B-2.

MDI-X to MDI-X External Crossover (RJ-45 Example)

Making the crossover externally with a crossover cable or adapter that exchanges

the TD and RD wire pairs (as shown in Figure B-2) is possible but has the

following disadvantages:

•

Because a crossover cable is not standard, you might have to specially order

one or make your own.

•

Having crossover cables and standard cables that resemble one another in a

network invites confusion.

Caution: Make any crossover cable you use look obviously different from

normal straight-through cables and put a tag on each end; for example, use a

distinctive color like yellow and put a tag labeled “X-over” on each end.

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Using the Model 5625HD EtherSpeed Switch Module

UTP Cables and Connectors

Table B-1 shows the pin assignments for 10BASE-T/100BASE-TX ports in the

standard MDI-X configuration.

Table B-1.

10BASE-T/100BASE-TX MDI-X Port Pin Assignments

RJ-45 Connector Port

Pin #

MDI-X Ports

Receive data +

Receive data –

Transmit data +

Not used

Amber LED

Green LED

Not used

Transmit data –

Not used

9364EA

Not used

Figure B-3 shows a 10BASE-T/100BASE-TX Ethernet UTP crossover cable used

to connect an Ethernet hub directly to the Model 5625HD switch module.

RD+

RD-

RD+

RD-

TD+

Unused

TD-

Unused

TD-

Unused

6740.2

Figure B-3.

10BASE-T/100BASE-TX Ethernet UTP Crossover Cable

B-4

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Cables and Connectors

Pin 1 crosses to pin 3, and pin 2 crosses to pin 6. To build this cable, you must

cross pairs. The pairs are listed in Table B-2, with an example of the color

combinations found in two typical cables.

Table B-2.

Pairs

Pairs in an RJ-45 Crossover Cable

Example 1

Example 2

Color Combinations

1 and 2

3 and 6

4 and 5

7 and 8

Orange/white and white/orange

Green/white and white/green

Blue/white and white/blue

Orange and blue

Yellow and black

Red and green

Brown and gray

Brown/white and white/brown

Using Category 5 Unshielded Twisted Pair Cables

Unshielded twisted pair (UTP) cable is the recommended wiring option for

100BASE-TX Fast Ethernet, as specified in the IEEE 802.3 standard for Ethernet.

Fast Ethernet recommended UTP cable consists of four pairs of twisted insulated

copper conductors bound in a single plastic sheath. The 100BASE-TX Fast

Ethernet transmissions are implemented through two-pair or four-pair Category 5

UTP wiring using standard shielded RJ-45 connectors. Category 5 cable is

certified to handle up to 100 MHz bandwidth. The EIA/TIA T568A standard

recommends the installation of Category 5 UTP cable for 100 Mb/s networks.

Use the following guidelines to ensure that your cables perform to specifications:

•

Certification—Make sure that your Category 5 UTP cable has completed the

Underwriters Laboratories (UL) or Electronic Testing Laboratories (ETL)

certification process.

Terminating method—To minimize crosstalk noise, maintain the twist ratio of

the cable up to the point of termination (untwist at any termination should not

exceed 0.5 in.).

Pairing options—For optimal performance from your cable plant, use the

EIA-T568A Commercial Building Wiring Standard pairing option at each end

of the cable. The terminating hardware offered by most major manufacturers

is correctly color-coded for proper wire placement according to that standard.

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Using the Model 5625HD EtherSpeed Switch Module

Using Shielded Twisted Pair Cables

Type 1 shielded twisted pair (STP) cabling also operates with 10BASE-T Ethernet

and 100BASE-TX Fast Ethernet. Type 1 STP cable consists of tinned-copper

braided shield surrounding two data-grade twisted pairs of #22 AWG solid copper

conductors that have individual or S-shaped shields of aluminum-backed

insulating tape or metallized Mylar foil.

Note: A balun media adapter is required when connecting 100-ohm RJ-45

100BASE-TX ports to a 150-ohm STP cable plant. This adapter provides

impedance matching between UTP (100-ohm) and STP (150-ohm) cabling.

Type 1 cable generally is used between wiring closets or from the wiring closet

patch panel to the work area wall outlet.

Type 1 cable generally is terminated with an IBM four-position (MIC) data

connector. Nortel Networks Fast Ethernet supports 100BASE-TX Fast Ethernet

over STP media through the application of a specialized balun media adapter, also

referred to as a Type 1 balun (Figure B-4). When adapting 150-ohm STP cable

plants for Fast Ethernet applications, balun media adapters are required at both the

hub and station ends of the STP cable plant. Media adapters (such as AMP part

number 558421-1) are available that plug into the RJ-45 patch cable connectors,

allowing the patch cable to connect with an IBM data connector. The media

adapter and patch cable provide impedance matching between UTP (100-ohm)

and STP (150-ohm) cabling.

6737

Figure B-4.

Fast Ethernet Type 1 Balun Media Adapter

Note: For additional information about AMP Type 1 balun media adapters

(part number 558421-1), contact your AMP reseller or distributor. The user

should verify that the combination of the STP cable plant and the impedance-

matching baluns meets the requirements of the applicable LAN standard.

B-6

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Appendix C

LEDs

This appendix describes the LED displays for the Model 5625HD switch module.

The LED display (Figure C-1) consists of two LEDs for each port. The LEDs

labeled with the port number indicate specific operating status. The LEDs labeled

100 indicate the port speed.

5625HD

10/100 Switch Host

Annunciator

Port Status

100 13 100

100 14 100

100 15 100

100 16 100

100 17 100

100 18 100

100 19 100

100 20 100

100 21 100

Port number

Port speed

Port LEDs

10 100 22 100

11 100 23 100

12 100 24 100

9341EA

Figure C-1.

LED Display for the Model 5625HD Switch Module

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Using the Model 5625HD EtherSpeed Switch Module

Table C-1 describes the operating conditions that cause the LEDs to light on the

Model 5625HD switch module.

Table C-1.

Type

LEDs on the Model 5625HD Switch Module

Label

Color/Status

Meaning

Annunciator 5625HD 10/100Mb/s Amber

Switch Host

The switch is booting.

Green

Off

The switch is running.

The switch module is not receiving

power.

Port Status Numbers 1 to 24

Flashing

Green/Amber Half-duplex/spanning tree is blocked.

Yellow/Amber Full-duplex/spanning tree is blocked.

Port is operational at full-duplex mode.

Yellow

Green

Port is operational at half-duplex

mode.

Amber

Off

Port is disabled by management.

Port is enabled, but no link exists.

Port is operating at 10 Mb/s.

Port is operating at 100 Mb/s.

Port Speed 100

Off

Green

C-2

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LEDs

RJ-45 LEDs

In addition to the LEDs shown in Figure C-1, each port’s RJ-45 connector

contains two LEDS. The LEDs show Model 5625HD switch module port status.

The amber RJ-45 LED blinks if a line error is detected. The port has detected one

or more CRC errors, data alignment errors, or frames that are too long.

In half-duplex mode, this blinking may also indicate receive or transmit collisions

on the network, which can happen during normal operation. If these collisions

continuously occur, check the statistics for the port from a management interface

such as the CLI or SpeedView to identify the type of error.

The green RJ-45 LED flashes to indicate that the port is either actively receiving

or transmitting data.

Amber LED blinks if

line error is detected

Green LED blinks

if active

9363FA

Figure C-2.

RJ-45 LEDs for the Model 5625HD Switch Module

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Index

Numbers

100BASE-T

connecting, 3-8

port description, 1-10

cables

10BASE-T Ethernet UTP crossover, 3-8

Category 5 UTP, B-5

connecting to EtherSpeed ports, 3-8

crossover, 2-2, B-3, B-5

EIA/TIA-T568A cable standard, B-5

length limits, B-1

10BASE-T

connecting, 3-8

port description, 1-10

802.1d standard, 1-7

802.1Q tags, 1-3

RS-232 cable, 3-9

STP, B-6

straight-through, 2-2, B-3

UTP, B-5

annunciator LED, 3-11

Category 5 UTP, B-5

applications

dedicated port for server, 2-5

desktop switch, 2-7

frame-to-cell converter, 2-10

segment switch, 2-9

Centillion A T M bus, 3-2

chassis, module placement in, 3-2

CLI, 1-7, 4-4

command line interface. See CLI

ATM uplinks, 2-7

configuration

autonegotiation

features, 1-3

ports, 1-10

ATM uplinks, 2-7

desktop switch, 2-10

frame-to-cell converter, 2-10

guidelines, 2-1

network examples, 2-3

previous, 4-2

backbone switch, 2-9

segment switch, 2-9

SpeedView, 1-1

SpeedView predefined, 2-12

backplane

Centillion ATM bus, 3-2

functions, 3-3

structure, 1-9

configuration terminal

equipment settings, 3-9

protocol setup, 3-10

BayStack switches, 2-10

bridge, replaced by switch, 2-6

congifuration

default, 2-12

connections

problem, 4-4

to servers, 2-5

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connectors

10BASE-FL, 3-9

LEDs

10BASE-T, 3-8

RJ-45, 1-2, 1-10, B-4

annunciator, C-1

description, C-2

location, 1-10

crossover cable, 2-2

matrix illustration, C-1

RJ-45 connector, C-3

verifying installation, 3-8

crossover cables, 2-2, B-3, B-5

customer support, xviii

dedicated ports, 2-5

default configuration, 2-12

desktop switch, 2-7, 2-10

Management Information Base. See MIB

MDI connections, 2-2

MDI-X pin assignments, B-4

MIB-I, MIB-II support, 1-7

MLT, 2-11

EIA/TIA-T568A cable standard, B-5

mode parameter, 2-12

enterprise network, segment switch in, 2-9

modules

arranging in Model 5000BH/5005BH chassis, 3-2

installing, 3-6

removing and replacing, 3-12

factory default configuration, 2-12

features, 1-3

MPOA (multi-protocol over ATM), 1-4

Multi-Link Trunking, 2-11

filtering, 1-8

filters parameter, 2-12

frame-to-cell converter, 2-10

network devices, connecting, 2-2

network examples

hot-swapping, 1-8

hubs, connecting, 2-2

dedicated port for server, 2-5

desktop switch, 2-7

frame-to-cell converter, 2-10

overview, 1-2

segment switch, 2-9

installation

network management features, 1-6

NIC (network interface card), 3-8

modules, 3-6

modules in Model 5000BH/5005BH chassis, 3-2

switch module, 3-6

tools and equipment, 3-5

verifying, 3-8

Optivity, 1-6

path cost parameter, 2-12

physical configuration, 2-1

Index-2

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pin assignments

MDI port, B-2

Spanning tree group

parameter, 2-12

MDI-X port, B-2, B-4

service port, 3-10

Spanning Tree Protocol

parameter, 2-12

support, 1-7

port

100BASE-T, connections, 1-10

10BASE-T, connections, 1-10

connection problems, 4-4

dedicated, 2-5

MDI, B-2

MDI-X, 2-2, B-2, B-4

priority, 2-12

specifications, technical, A-1

SpeedView

description, 1-6

predefined configurations, 2-12

using for troubleshooting, 4-4

stackable switches, 2-10

speed, 2-12

STP cable guidelines, B-6

state, 2-12

straight-through cable, 2-2, B-3

support, Nortel Networks, xviii

switch, configuration and management, 1-6

switching mode parameter, 2-12

product support, xviii

protocol setup for terminal configuration, 3-9

publications

hard copy, xvii

related, xvi

technical publications, xvii

technical specifications, A-1

technical support, xviii

replacement conditions, 3-11

rfc 1213, 1-7

terminal

RJ-45 connector LEDs, C-3

RJ-45 connectors, 1-2

RS-232 cable, 3-9

communication parameters, 3-9

service port, 3-9

tools and equipment for installation, 3-5

troubleshooting, 3-11, 4-1

TTY-compatible terminal, 3-9

sample networks

dedicated port for server, 2-5

desktop switch, 2-7

UTP (unshielded twisted pair) cables

Category 5 guidelines, B-5

frame-to-cell converter, 2-10

segment switch, 2-9

server, dedicated port, 2-5

virtual LANs, support for, 1-8

service port

VLANs

connecting a terminal, 3-9

pin assignments, 3-9

terminal attributes, 3-9

description, 1-8

protocol-based, 1-3

shared media and switches, 2-9

slots, placement of modules in, 3-2

SNMP support, 1-7

206208-A

Index-3

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