3COM ROUTER MODULE 7000 User Manual

CCESSBUILDE

RIDGE/ROUTER

7000

ODULE

SER

UID

Part No. 980/000045/001 Published June 1996

3Com Corporation ■

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3Com Europe L time without obligation on the part of

3Com Europe L including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.

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If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following restricted rights:

For units of the Department of Defense:

Restricted Rights Legend:

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Restricted Rights Legend: Use, reproduction or disclosure is subject to restrictions set forth in subparagraph (a)

through (d) of the Commercial Computer Software - Restricted Rights Clause at 48 C.F.R. 52.227-19 and the limitations set forth in 3Com Corporation’s standard commercial agreement for the software. Unpublished rights reserved under the copyright laws of the United States.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.

3Com, AccessBuilder, Boundary Routing, LANplex, LanScanner, LinkBuilder, NETBuilder, NETBuilder II, Parallel Tasking, ViewBuilder, EtherDisk, EtherLink, EtherLink Plus, EtherLink II, SmartAgent, TokenLink, TokenLink Plus, TokenDisk and Transcend are registered trademarks of 3Com Corporation. 3TECH, CacheCard, FDDILink, FMS, NetProbe and Star-Tek are trademarks of 3Com Corporation. 3ComFacts is a service mark of 3Com Corporation.

CompuServe is a registered trademark of CompuServe, Inc. Corporation. Novell and NetWare are registered trademarks of Novell Inc. Windows is a trademark of Microsoft Corporation. VT100 is a registered trademark of Digital Equipment Corporation.

Other brand and product names may be registered trademarks or trademarks of their respective holders.

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td. reserves the right to revise this documentation and to make changes in content from time to

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95052-8145

MPORTAN

T SAFETY INFORMATIO

WARNING:

personal safety. Follow all instructions carefully.

Please read carefully and thoroughly the following information before installing the AccessBuilder

■

Exceptional care must be taken during installation and removal of the module.

■

The safety status of the interconnection port on this equipment are as follows:

Ports identified by the label ISDN = TNV

Ports identified by the labels MANAGER, LAN and WAN = SELV

TNV (telecoms network voltage) is a circuit which under normal operating conditions carries telecommunication signals.

SELV (safety extra low voltage) is a secondary circuit which is designed and protected so that under normal and single-fault conditions, the voltage between any two accessible parts does not exceed a safe value (42.2 V peak or 60 V DC).

Only connect apparatus complying with the relevant interface requirements to the ports on this unit.

WARNING: Twisted Pair RJ45 data port.

socket. It cannot be used as a telephone socket. Only connect RJ45 data connectors to this socket.

Warnings contain directions that you must follow for your

7000 B

ridge/Router Module:

This is a shielded RJ45 data

ICHTIGE SICHERHEITSHINWEIS

ACHTUNG:

eigenen Sicherheit zu befolgen haben.

Lesen Sie bitte die folgenden Informationen sorgfältig durch, bevor Sie den

■

Auf besondere Vorsicht muß während des Ein- und Ausbaus des Einheits geachtet werden.

■

Der Sicherheitsstandard der Anschlüsse fuer dieses Gerät sind wie folgt:

Anschlüsse bezeichnet mit ISDN = TNV

Anschlüsse bezeichnet mit MANAGER, LAN und WAN = SELV

TNV (Telecoms Network Voltage - Spannung des Telekommunikationsnetzwerks) ist ein Anschluss, der unter normalen Umständen Telekommunikationssignale enthält .

SELV (Safety Extra Low Voltage - Extra Sicherheitsspannung) ist ein weiterer Anschluss, der unter normalen Umständen und Fehlerkonditionen entworfen und gesichert wurde, so dass die Spannung zwischen zwei erreichbaren Teilen kein gefährliches Niveau erreicht (42.2V max. oder 60V DC).

An den Anschlussbuchsen der Geräte dürfen nur die dafür vorgesehenen Anschlüsse verwendet werden.

Die Warnungen enthalten Anweisungen, die Sie zur

AccessBuilder 7000 Bridge/Router Module e

inbauen:

ACHTUNG:

abgeschirmte RJ45 Datenanschlußbuchse. Sie darf nicht als Telefonanschluß verwendet werden. Verbinden Sie nur RJ45 Datenstecker mit diesem Anschluss.

gedrehte paarfache RJ45 Datenanschluss. Es ist eine

L’

INFORMATION D

MPORTANTE

E SÉCURITÉ

AVERTISSEMENT:

vous devez suivre pour votre sécurité personnelle. Suivre toutes les instructions avec soin.

Veuillez lire à fond l’information suivante avant d’installer le moyeu:

■

Le soin exceptionnel doit être pris pendant l’installation et l’enlèvement du moyeu.

■

Les normes de sécurité des ports d'interconnexion sur cet équipement sont les suivants:

Les ports marqués par les etiquettes ISDN = TNV

Les ports marqués par les etiquettes MANAGER, LAN et WAN = SELV

TNV (Telecoms Network Voltage - tension réseau de télécommunications) est un circuit qui dans des conditions d'opérations normales, transfert les signeaux télécoms.

SELV (Safety Extra Low Voltage - tension de sécurité extra-réduite) est un circuit secondaire désigné et protègé qui dans des conditions normales et de fautes uniques, assure que la tension entre deux éléments accessibles n'accedéra pas un niveau de sécurité (42.2V max. ou 60 V DC).

Connecter uniquement des unités conformes aux normes relatives des interfaces de cet équipement.

Les avertissements contiennent les instructions que

AVERTISSEMENT: Le port de données RJ45 de paire tordue.

est un socle de données RJ45 blindé. Il ne peut pas être utilisé comme socle de téléphone. Seulement brancher les connecteurs de données RJ45 à ce socle.

Ceux-ci

ONTENTS

MPORTAN

ICHTIGE SICHERHEITSHINWEIS

L’

INFORMATION D

BOU

Introduction 1 How to Use This Guide 2 Conventions 3 Additional Safety Information 4

RIDGE/ROUTER MODULE

Introduction 1-1

Benefits of ISDN 1-2

Using ISDN to Support Leased Line WAN Circuits 1-3

Principal Features 1-4

Typical Applications 1-5

Novell Network 1-5 IP Host on the Same IP Network 1-7 IP Host on Another IP Network 1-9 Internet or PPP Router 1-10

Multiple Connections from a Single Site 1-11 Pack Contents Checklist 1-12 Registering Ownership of your Bridge/Router Module 1-12 Pre-installation Requirements 1-13

T SAFETY INFORMATIO

E SÉCURITÉ IMPORTANTE

T THIS GUID

NSTALLATION AND OPERATIO

Overview 2-1 Installing The Module 2-2

BRI Bridge/Router Module 2-2 PRI Bridge/Router Module 2-2 Installation 2-2 Installing the Rear Card 2-4 Installing the Front Card 2-5 Connecting the Cables 2-6

ISDN Ports 2-6 LAN Ports 2-6 Manager 2-6 WAN Ports 2-7

Front Panel LEDs 2-8

BRI Bridge/Router 2-8

PRI Bridge/Router 2-9 Monitoring ISDN Line Usage 2-10 Configuring the Bridge/Router Module 2-10 Setting Up a WAN Link 2-11

ROUBLESHOOTIN

Troubleshooting Guide 3-1

Management Problems 3-1

POWER LED Does Not Light 3-2

ISDN/CHANNEL LEDs Do Not Light 3-2

Other LEDs Do Not Light 3-2

Bridge/Router Does not Connect to the Remote Device 3-2

Bridge/Router Disconnects While On-line 3-2

RIDGE/ROUTER SPECIFICATIO

SSIGNMENT

Specifications A-1

LAN Connector Interfaces A-1 WAN Connector Interface A-1 ISDN Connector Interface A-1

BRI Bridge/Router Module A-1

PRI Bridge/Router Module A-1 Management Connector Interface A-2 Bridge Characteristics A-2 Performance A-2

Approvals A-3 Physical Description A-3 LAN Port Pin Assignments A-4

AUI Cable A-4 10BaseT Connecting Cable A-5

ISDN Port Cable Pin Assignments A-5 WAN Port Cable Pin Assignments A-6

X.21/V.11 A-6 V.24 /V.2 8 A- 7 V.35 /V.3 6 A- 8

Management Port Cable Pin Assignments A-9

N AND CABL

E PI

ECHNICA

On-line Technical Services B-1

3Com Bulletin Board Service B-1

Access by Modem B-1

Access by ISDN B-2 World Wide Web Site B-2

Support from Your Network Supplier B-3 Support from 3Com B-4 Returning Products for Repair B-5

L SUPPOR

NDE

IMITE

D WARRANTY

FCC C

LAS

A V

ERIFICATION STATEMEN

Introduction

This guide describes the features, installation and configuration of the AccessBuilder 7000 this module:

■

AccessBuilder 7000 BRI

■

AccessBuilder 7000 PRI

These modules are installed and configured in the same way. The PRI

Bridge/Router

connects through the AccessBuilder 7000 PRI Interface Module.

This guide assumes that you have installed your AccessBuilder 7000 Access Concentrator and that the ISDN lines to which you want to connect are installed and operational.

This guide does not cover configuration and management of the Bridge/Router Module. For this information, see the

Access Router Software Reference

BOU

T THIS

Module is not connected to ISDN directly however, but

UID

Bridge/Router Module

Bridge/Router

guide.

Module - 3C400080

Module - 3C404085

. There are two versions of

AccessBuilder ISDN

BOU

T THIS GUID

How to Use This Guide

This table shows where to find specific information:

If you are looking for information on:

The Bridge/Router Module’s features and typical uses.

Installation and descriptions of the front panel LEDs and rear panel connectors.

Troubleshooting and problem solving.

Technical Information and cable specifications.

Technical Support.

Turn to:

Chapter 1

Chapter 2

Chapter 3

Appendix A

Appendix B

Conventions

The icon conventions that are used throughout this guide are:

Conventions

Icon

Type

Information Note

Caution

Warning

Description

Information notes call attention to important features or instructions.

Cautions alert you to personal safety risk, system damage, or loss of data.

Warnings alert you to the risk of severe personal injury.

The text conventions used in this guide are:

Convention

“Enter” vs. “Type”

Text represented as

screen display

Text represented as

commands

Keys

Italics

Description

When the word “enter” is used in this guide, it means type something, then press the [Return] or [Enter] key. Do not press the [Return] or [Enter] key when an instruction simply says “type.”

This typeface

displays on your screen, for example:

Enter the unit’s IP address:

This typeface

commands that you enter, for example:

CO IS NU

When specific keys are referred to in the text, they are called out by their labels, such as “the Return key” or “the Escape key,” or they may be shown as [Return] or [Esc].

If two or more keys are to be pressed simultaneously, the keys are linked with a plus sign (+), for example:

Press [Ctrl]+[Alt]+[Del].

Italics

are used to denote

emphasis

is used to represent

new terms

BOU

T THIS GUID

Additional Safety Information

See also the Important Safety Information at the front of this guide.

When using the unit, observe the following safety information:

■

Retain this user’s guide for later use and pass it on in the event of change of ownership of the unit.

■

Protect the unit from sudden, transient increases and decreases in electrical power by fitting an in-line surge suppressor or uninterruptable power supply.

■

Products manufactured by us are safe and without risk provided they are installed, used and maintained in good working order in accordance with our instructions and recommendations.

■

If any of the following conditions occur, isolate the electricity supply and refer to your 3Com reseller.

If the module begins to make an odd noise, smell or smoke.

■

If the module shows signs of a distinct change in performance.

■

Do not spill food or liquids on the unit. If the unit gets wet, isolate the electrical supply and contact your 3Com reseller.

■

Do not push any objects into the openings of the unit. Doing so can cause fire or electric shock by shorting out internal components.

■

Be sure nothing rests on the module’s system cables and that the cables are not located where they can be stepped on and cause damage to the unit.

■

Keep the unit away from radiators and heat sources.

■

Install the unit in a clean area that is free from dust or extreme temperatures.

■

This product complies with the electro-magnetic compatibility (EMC) requirements of EN 55022 Class A and EN 50082 (susceptibility) when the following prerequisites are observed;

the WAN port must be attached to a screened digital cable.

■

the ISDN cable must be used in conjunction with a three turn ferrite.

■

Additional Safety Information

■

This unit contains a lithium battery which is attached to a microchip on the printed circuit board. The defective battery must be disposed of safely in-line with the manufacturers instructions.

■

Interconnecting directly, or by way of other apparatus, to ports complying with SELV requirements may produce hazardous conditions on the network. Advice should be sought from a competent engineer before such a connection is made.

BOU

T THIS GUID

Introduction

This chapter outlines the features and uses of the AccessBuilder 7000 Bridge/Router Module when installed in the AccessBuilder 7000 Access Concentrator chassis. There are two versions of the Bridge/Router Module:

■

BRI Bridge Router Module

lines (four ISDN channels) and has two WAN ports for connection to leased line services.

■

PRI Bridge Router Module

through the PRI Interface Module. This module provides up to eight ISDN channels and has two WAN ports for connection to leased line services.

The bridge/router modules allow geographically separate LAN workgroups and remote office users, to connect to central computing facilities through either, a dial-up on demand connection over the integrated services digital network (ISDN), or permanently connected leased lines.

RIDGE/ROUTER

– Connects directly to two Basic Rate ISDN

– Connects to the Primary Rate ISDN service

ODULE

The Bridge/Router Module also has two ports for connection over permanent leased line WAN connections, also available from your telephone carrier organization. Leased lines are available to work at a range of speeds which incur higher costs the higher the line speed. The benefit of leased lines is their permanence and fixed cost. No dialling is required, but unlike ISDN, you pay a fixed cost regardless of whether you transfer little data or high volumes of data 24 hours a day.

1-2

HAPTE

Typically, the Bridge/Router module is used to interconnect LANs running protocols such as Transmission Control Protocol/Internet Protocol (TCP/IP) or Novell Internetwork Packet Exchange (IPX). The module offers full LAN-to-LAN connectivity at speeds up to 64 Kilobits per second (Kbps) on each ISDN channel (128 2 Megabits per second (Mbps) on the WAN port.

The maximum bandwidth of the Bridge/Router Module is 2 Mbps. If you have a single leased-line link running at 2 Mbps connected to a WAN port, you must disable the ISDN ports and the second WAN port.

In the USA, some ISDN services run over 56 Kbps channels. Basic Rate ISDN therefore offers connectivity of 112 Kbps in total.

Benefits of ISDN

ISDN is an extension of the national and international public switched telephone network, which offers a digital end-to-end telecommunication system, providing a better quality service than available using the analog telephone network. The principal benefits of ISDN are:

RIDGE/ROUTER MODULE

Kbps i

n total) and up to

■

Fast call setup times, typically taking less than one second for national calls.

■

Greater bandwidth with multiple channels.

The basic rate service, often referred to as ISDN 2, carries two 64 Kbps (possibly 56

Kbps i

n USA) user channels, called B channels and one 16 Kbps control channel called the D channel. The line service is presented into the customers premises through a standard RJ45 socket.

The PRI Bridge/Router module is designed to operate with Primary Rate ISDN services provided to the AccessBuilder 7000 through the PRI Interface M

odule and supports up to eight 64

Kbps (

possibly 56

Kbps i

USA) user channels.

A significant aspect of the ISDN service is that it can be provided over the same wiring that was installed for the original telephone service. Therefore, ISDN can be made available relatively cheaply almost anywhere that previously had access to the analog system

. T

he cost of

Introduction

installation and rental of ISDN lines has dropped to the point where it is extremely attractive as regards cost and performance.

Using ISDN to Support Leased Line WAN Circuits

ISDN provides an ideal service to connect remote LANs. To be effective, the connecting bandwidth needed is at least 56 Kbps to achieve a realistic throughput. Slower speed links can be used but usually only when usage is low and infrequent, or if higher speed circuits cannot be provided.

Leased digital point-to-point circuits can still be cost effective if usage spans many hours per day. However as ISDN tariffs reduce, this balance also changes. ISDN can be used to provide effective backup of these point-to-point WAN circuits in two ways.

■

Firstly, if the point-to-point circuit fails, an ISDN channel can be dialled-up automatically and quickly, to provide an alternative path to the remote unit.

■

Secondly, if the leased circuit becomes heavily loaded due to peaks in the traffic between remote bridges or routers, additional bandwidth can be automatically dialled-up to supplement the bandwidth of the leased circuit. The interconnected bridges would then treat the leased line and ISDN channel as parallel links, sharing the load across the two.

1-3

1-4

HAPTE

RIDGE/ROUTER MODULE

Principal Features

The principal features of the Bridge/Router Module are:

■

Easy to install, configure and support.

■

BRI B

ridge/Router Module – 2 x Basic Rate Interface ISDN, 2B+D port, supporting Basic Rate interface of two 64 Kbps channels (or possibly two 56 Kbps channels in the USA) and a 16 Kbps control channel. Available with a U or S ISDN interface.

■

PRI Bridge/Router Module– Primary Rate Interface ISDN supporting up to eight 64 Kbps channels connecting to ISDN through the PRI Interface Module.

■

Two leased line wide area network (WAN) access ports

The PRI Bridge/Router Module supports a total of eight ISDN/WAN ports. If both WAN ports are to be used, only six ISDN channels can be connected The maximum bandwidth of the Bridge/Router Module is 2 Mbps. If you have a single leased-line link running at 2 Mbps connected to a WAN port, you must disable the ISDN ports and the second WAN port.

■

Three standard Ethernet LAN connections.

■

Data terminal equipment (DTE) management port.

■

Support for full IP and IPX routing.

■

Protocol transparent bridging.

■

Sophisticated data packet filtering to provide network security.

■

Provides NetWare protocol

■

Data compression based on an optimized Lempel Ziv algorithm.

■

Scalable R

outer Clustering (SRC) to optimize ISDN routing and line

spoofing

usage.

■

Remote and local management.

■

Flash erasable programmable read-only memory (EPROM), allowing the remote upgrading of the units operating system.

■

Uses simple network management protocol (SNMP) and provides management information base (MIB) II support.

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