3Com Switch 4900, 3C17700, Switch 4900 SX, 3C17702, Switch 4924 Getting Started Manual

...

SuperStack® 3

Switch 4900 Series Getting Started Guide

Switch 4900 (3C17700) Switch 4900 SX (3C17702) Switch 4924 (3C17701) Switch 4950 (3C17706)

http://www.3com.com/

Part No. DUA1770-0AAA04 Published August 2002

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145

Copyright © 2002, 3Com Technologies. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Technologies.

3Com Technologies reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Technologies to provide notification of such revision or change.

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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 or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

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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:

All technical data and computer software are commercial in nature and developed solely at private expense. Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.

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CONTENTS

ABOUT THIS GUIDE

Conventions 8 Related Documentation 9 Accessing Online Documentation 9 Product Registration 10 Documentation Comments 10

1 INTRODUCING THE

UPERSTACK 3 SWITCH 4900 SERIES

About the Switches 12

Summary of Hardware Features 13

Switch — Front View Detail 14

100/1000BASE-T and 10/100/1000BASE-T Ports 16 1000BASE-SX Ports 16 GBIC Ports 16 LEDs 17

Switch — Rear View Detail 18

Unit Information Label 19 Power Socket 19 Redundant Power System Socket 19 Console Port 20 Expansion Module Slot 20

Default Settings 20

2 INSTALLING THE SWITCH

Package Contents 22 Choosing a Suitable Site 22 Rack-mounting 23 Placing Units On Top of Each Other 24 Creating an XRN Distributed Fabric 24

How To Interconnect Units 25

Rules For Interconnecting Units 25

The Power-up Sequence 26

Powering-up the Switch 26 Checking for Correct Operation of LEDs 26 Connecting a Redundant Power System 27 Choosing the Correct 10/100/1000BASE-T Cables 27 Choosing the Correct Fiber Cables 28

Switch 4950 — GBIC Operation 29

Approved GBIC Transceivers 29 Inserting a GBIC Transceiver 29

3 SETTING UP FOR MANAGEMENT

Setting Up Overview 34

IP Configuration 35 Preparing for Management 36

Manually Configuring IP Information 37

Connecting to a Front Panel Port 37 Connecting to the Console Port 40

Viewing Automatically Configured IP Information 43

Using 3Com Network Supervisor 43 Connecting to the Console Port 44

Methods of Managing a Switch 46

Command Line Interface Management 46 Web Interface Management 47 SNMP Management 47

Setting Up Command Line Interface Management 48

CLI Management via the Console Port 48 CLI Management over the Network 48

Setting Up Web Interface Management 49

Pre-requisites 49 Web Management Over the Network 50

Setting Up SNMP Management 51

Pre-requisites 51

Default Users and Passwords 51

Changing Default Passwords 52

4 PROBLEM SOLVING

Solving Problems Indicated by LEDs 54 Solving Hardware Problems 55 Solving Communication Problems 57 Solving Software Upgrade Problems 58

A SAFETY INFORMATION

Important Safety Information 60 L’information de Sécurité Importante 63 Wichtige Sicherheitsinformationen 66

B PIN-OUTS

Null Modem Cable 69 PC-AT Serial Cable 69 Modem Cable 70 RJ-45 Pin Assignments 70

C TECHNICAL SPECIFICATIONS

D TECHNICAL SUPPORT

Online Technical Services 75

World Wide Web Site 75 3Com Knowledgebase Web Services 75

3Com FTP Site 76 Support from Your Network Supplier 76 Support from 3Com 77

Email Support 77

Telephone Support 77 Returning Products for Repair 79

INDEX

REGULATORY NOTICES

ABOUT THIS GUIDE

This guide provides all the information you need to install and use the following Switches in their default state:

■ SuperStack

This guide is intended for use with all the 4900 Series Switches listed above. For illustrative purposes all pictures and example screens show the 4900 model, however, all procedures apply to all the other Switches listed unless otherwise stated.

3 Switch 4900 (3C17700)

3 Switch 4900 SX (3C17702)

3 Switch 4924 (3C17701)

3 Switch 4950 (3C17706)

The guide is intended for use by network administrators who are responsible for installing and setting up network equipment; consequently, it assumes a basic working knowledge of LANs (Local Area Networks).

If the information in the release notes that are shipped with your product differ from the information in this guide, follow the instructions in the release notes.

Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format (PDF) or HTML on the 3Com World Wide Web site:

http://www.3com.com/

8 ABOUT THIS GUIDE

Conventions Tab l e 1 and Ta bl e 2 list conventions that are used throughout this guide.

Tab le 1 Notice Icons

Icon Notice Type Description

Information note Information that describes important features or

instructions.

Caution Information that alerts you to potential loss of data or

potential damage to an application, system, or device.

Warning Information that alerts you to potential personal

injury.

Tab le 2 Text Conventions

Convention Description

Screen displays This typeface represents information as it appears on the

screen.

Syntax The word “syntax” means that you must evaluate the syntax

provided and then supply the appropriate values for the placeholders that appear in angle brackets. Example:

To change your password, use the following syntax:

system password <password>

In this example, you must supply a password for <password>.

Commands The word “command” means that you must enter the

command exactly as shown and then press Return or Enter. Commands appear in bold. Example:

To display port information, enter the following command:

bridge port detail

The words “enter” and “type”

Keyboard key names If you must press two or more keys simultaneously, the key

Words in italics Italics are used to:

When you see the word “enter” in this guide, you must type something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says “type.”

names are linked with a plus sign (+). Example:

Press Ctrl+Alt+Del

■ Emphasize a point.

■ Denote a new term at the place where it is defined in the

text.

■ Identify menu names, menu commands, and software

button names. Examples: From the Help menu, select Contents. Click OK.

Related Documentation

In addition to this guide, each Switch documentation set includes the following:

■ SuperStack 3 Management Quick Reference Guide

This guide contains:

■ a list of software features supported by each Switch.

■ a summary of the web interface and command line interface

commands for the Switch.

■ Release Notes

These notes provide information about the current software release,

including new features, modifications, and known problems.

■ SuperStack 3 Switch Implementation Guide

This guide contains information on the features supported by your

Switch and how they can be used to optimize your network. It is

supplied in PDF format on the CD-ROM that accompanies the Switch.

■ Management Interface Reference Guide

This guide provides detailed information about the web interface and

command line interface that enable you to manage the Switch. It is

supplied in HTML format on the CD-ROM that accompanies the

Switch.

Accessing Online Documentation

There are other publications you may find useful:

■ Documentation accompanying the Advanced Redundant Power

System.

■ Documentation accompanying the Expansion Modules.

■ Documentation accompanying 3Com Network Supervisor. This is

supplied on the CD-ROM that accompanies the Switch.

The CD-ROM supplied with your Switch contains the following online documentation:

■ SuperStack 3 Switch Implementation Guide (PDF format)

■ SuperStack 3 Switch Management Interface Reference Guide (HTML

format)

■ Other documentation relating to the Switch 4900 Series (PDF format)

10 ABOUT THIS GUIDE

To access the online documentation from the CD-ROM:

1 Insert the CD-ROM into the relevant CD-ROM drive. If your PC has

auto-run enabled, a splash screen will be displayed automatically.

2 Select the Documentation section from the contents page.

If the online documentation is to be accessed from a local drive or server, you will need to access the CD-ROM contents via the root directory and copy the files from the CD-ROM to a suitable directory.

■ The HTML Reference Guide is stored in the Docs/referenceguide

on the CD-ROM. The documentation is accessed using the index.htm file.

■ The PDF Implementation Guide is stored in the

Docs/implementation directory of the CD-ROM.

3Com recommends that you copy the Docs/referenceguide directory as a whole to maintain the structure of the files.

Product Registration

Documentation Comments

You can register your SuperStack 3 Switch on the 3Com Web site to receive up-to-date information on your product:

http://support.3com.com/registration/frontpg.pl

Your suggestions are very important to us. They will help make our documentation more useful to you. Please e-mail comments about this document to 3Com at:

pddtechpubs_comments@3com.com

Please include the following information when commenting:

■ Document title

■ Document part number (on the title page)

■ Page number (if appropriate)

Example: Part Number DUA1770-0AAA0x SuperStack 3 Switch 4900 Series Getting Started Guide Page 21

INTRODUCING THE S

UPERSTACK 3 SWITCH 4900 SERIES

This chapter contains introductory information about the Switch 4900, 4900 SX, 4924 and 4950 and how they can be used in your network. It covers summary information about the hardware.

The information for all the Switches in the Switch 4900 Series is the same unless otherwise stated.

■ About the Switches

■ Summary of Hardware Features

■ Switch — Front View Detail

■ 100/1000BASE-T and 10/100/1000BASE-T Ports

■ 1000BASE-SX Ports

■ GBIC Ports

■ LEDs

■ Switch — Rear View Detail

■ Unit Information Label

■ Power Socket

■ Redundant Power System Socket

■ Console Port

■ Expansion Module Slot

■ Default Settings

12 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES

About the Switches ■ The Switch 4900 connects your existing 100 Mbps devices and

high-performance workgroups with a 1000 Mbps copper backbone or server connection.

■ The Switch 4900 SX connects your existing 1000 Mbps devices and

high-performance workgroups with a 1000BASE-SX fiber backbone or server connection.

■ The Switch 4924 connects your existing 10 Mbps and 100 Mbps

devices and high-performance workgroups to a 1000 Mbps copper backbone or server connection.

■ The Switch 4950 is a 10/100/1000 Mbps mixed media device that

allows you to connect your existing 10/100/1000 Mbps devices and high-performance workgroups to a fiber or copper gigabit backbone or server connection.

You can also interconnect any combination of two Switches from the

SuperStack XRN Distributed Fabric. This allows you to create a highly resilient core around which you can build your network. For more information about interconnecting Switches, see “Creating an XRN Distributed Fabric”

page 24

use it in your network, refer to the Implementation Guide on the CD-ROM that accompanies the Switch.

4900 Series or 3Com Switch 4050/4060 range to create an

. For more information about 3Com XRN Technology and how to

For information about using the software features of the Switch, refer to the “SuperStack 3 Switch Management Interface Reference Guide” on the CD-ROM that accompanies the Switch.

About the Switches 13

Summary of

Hardware Features

Tab l e 3 summarizes the hardware features that are supported by the

Switches.

Tab le 3 Hardware features

Feature Switch 4900 Series Fast Ethernet

and Gigabit Ethernet Ports

Addresses ■ Up to 12,000 supported

Forwarding Modes

Duplex Modes ■ Half duplex only supported on

Flow Control Supported on all ports Smart

auto-sensing

Tra ff ic Prioritization

Layer 3 Switching

RPS Support Connects to SuperStack 3 Advanced Redundant Power System

XRN Support eXpandable Resilient Networking (XRN) support. Allows

Mounting 19-inch rack or stand-alone mounting

Switch 4900: 12 Auto-negotiating 100BASE-TX/1000BASE-T

ports

Switch 4900 SX: 12 Auto-negotiating 1000BASE-SX ports Switch 4924: 24 Auto-negotiating

10BASE-T/100BASE-TX/1000BASE-T ports Switch 4950: 12 Auto-negotiating

10BASE-T/100BASE-TX/1000BASE-T, 6 1000BASE-SX and 6 GBIC ports

■ Up to 64 permanent entries

Store and Forward

10BASE-T/100BASE-TX/1000BASE-T ports in 10/100 Mbps mode

■ All 1000 Mbps ports are full duplex only

■ Supported on all 10BASE-T/100BASE-TX/1000BASE-T ports

■ Not supported on 1000BASE-SX and GBIC ports

Supported (IEEE Std 802.1D, 1998 Edition) Four traffic queues per port Support for wire-speed IP routing

(ARPS) (3C16071B)

interconnection of two units to create a Distributed Fabric.

14 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES

Switch — Front View Detail

Figure 1 Switch 4900 — front view

Figure 2 Switch 4900 SX — front view

Figure 3 Switch 4924 — front view

Figure 4 Switch 4950 — front view

Switch — Front View Detail 15

WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot be used as standard traditional telephone sockets, or to connect the unit to a traditional PBX or public telephone network. Only connect RJ-45 data connectors, network telephony systems, or network telephones to these sockets.

Either shielded or unshielded data cables with shielded or unshielded jacks can be connected to these data sockets.

16 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES

100/1000BASE-T and

10/100/1000BASE-T

Ports

The 100BASE-TX/1000BASE-T and 10BASE-T/100BASE-TX/1000BASE-T ports have RJ-45 connectors and are configured as Auto MDIX (cross-over).

The default state for these ports is auto-negotiation enabled, where the speed, duplex and flow control modes of a link are automatically detected to provide the highest available bandwidth with the link partner.

Alternatively, auto-negotiation can be disabled. These ports can be manually configured to 10 Mbps half duplex (if supported), 100 Mbps half duplex, 10 Mbps full duplex (if supported), or 100 Mbps full duplex. It is not possible to manually configure a 1000BASE-T link as auto-negotiation is mandatory in the 1000BASE-T standard.

The maximum segment length is 100 m (328 ft) over Category 5 twisted pair cable.

1000BASE-T operation only supports full-duplex mode.

10BASE-T (10 Mbps) is only supported on Switch 4924 and 4950.

1000BASE-SX Ports The default state for these ports is auto-negotiation enabled, where the

speed, duplex and flow control modes are negotiated. As the speed and duplex modes are fixed by the media type, only the flow control is negotiated with the link partner. Alternatively, auto-negotiation can be disabled and the flow control setting can be manually configured.

1000BASE-SX ports do not support auto-negotiation of speed and only support full duplex mode.

GBIC Ports GBIC ports support fiber Gigabit Ethernet short-wave (SX), long-wave

(LX) and long-haul (LH70) GBIC transceivers in any combination. This offers you the flexibility of using GBIC transceivers to provide connectivity between the Switch and remote 1000 Mbps workgroups or to create a high capacity aggregated link backbone connection.

The default state for these ports is auto-negotiation enabled, where the speed, duplex and flow control modes are negotiated. As the speed and duplex modes are fixed by the media type, only the flow control is negotiated with the link partner. Alternatively, auto-negotiation can be disabled and the flow control setting can be manually configured.

Switch — Front View Detail 17

LEDs Ta bl e 4 lists LEDs visible on the front of the Switch, and how to read their

status according to color. For information on using the LEDs for problem solving, see “Checking for Correct Operation of LEDs”

Tab le 4 LED behavior

LED Color Indicates Port Status LEDs

Packet Yellow Packets are being transmitted/received on the port.

Off No packets are being transmitted/received on the port.

Status Green A high speed (1000 Mbps) link is present, and the port

is enabled.

Green flashing A high speed (1000 Mbps) link is present, but the port

is disabled.

Yellow A low speed (100 Mbps on 4900, 10/100 Mbps on

4924/4950) link is present, and the port is enabled. (Not applicable on 4900 SX.)

Yellow flashing A low speed (100 Mbps on 4900, 10/100 Mbps on

4924/4950) link is present, but the port is disabled. (Not applicable on 4900 SX.)

Off No link is present.

Module Status LEDs

Green The Module is installed and supported. The Link Status

has been determined for a single port Module.

Yellow The Module is installed and supported. The Module

has multi-ports or there is no Link for a single port Module.

Yellow flashing The Module is installed but not supported. Note that

the Switch will continue to operate normally.

Off The Module is not installed.

Unit LEDs

1–4 Green Determines the identity of the Switch when

interconnected to another Switch to create an XRN Distributed Fabric and that a link is present.

Off A fault has occurred.

Power/Self Test LED

Green The Switch is powered-up and operating normally. Green flashing The Switch is either downloading software or is

initializing (which includes running a Power On Self

Test). Yellow The Switch has failed its Power On Self Test. Off The Switch is not receiving power.

on page 26.

18 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES

LED Color Indicates Layer 3 LED

Green The Switch software supports Layer 3. Off The Switch software does not support Layer 3.

Switch — Rear View Detail

Figure 5 Switch 4900 — rear view

Figure 6 Switch 4900 SX — rear view

Figure 7 Switch 4924 — rear view

Figure 8 Switch 4950 — rear view

Switch — Rear View Detail 19

Unit Information

Label

This label shows the following:

■ The 3Com product name of the Switch

■ The 3Com 3C number of the Switch

■ The unique MAC address (Ethernet address) of the Switch

■ The serial number of the Switch

You may need this information for fault reporting purposes.

Power Socket The Switch automatically adjusts its power setting to any supply voltage

in the range 90-240 VAC.

Redundant Power

System Socket

To protect against internal power supply failure, you can use this socket to connect a SuperStack 3 Advanced Redundant Power System (RPS) to the Switch. See “Connecting a Redundant Power System”

on page 27.

20 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES

Console Port The console port allows you to connect a terminal and perform remote or

local out-of-band management. The console port uses a standard null modem cable and is set to auto-baud (up to a maximum of 19200 baud), 8 data bits, no parity and 1 stop bit.

Expansion Module

Slot

You can use this slot to install an Expansion Module. Contact your supplier for further information on the range of Expansion Modules supported by your Switch.

WARNING:

When an Expansion Module is not installed, ensure the

blanking plate is fitted by tightening all screws with a suitable tool.

Default Settings Tab l e 5 shows the default settings for the Switches. If you initialize one of

the Switch units, it is returned to these defaults.

Tab le 5 Default Setting

Feature Switch 4900 Series Port Status Enabled Port Speed Auto-negotiated Duplex Mode Auto-negotiated Flow Control Auto-negotiated Broadcast Storm Control Enabled

High threshold: 3000 broadcast frames per second — Notify and filter

Low threshold: 1500 broadcast frames per second — Notify and unfilter

Virtual LANs (VLANs) All ports belong to the untagged Default VLAN

(VLAN 1)

Multicast Filtering IGMP filtering enabled Rapid Spanning Tree Protocol Enabled Link Aggregation Control

Protocol (LACP) Smart Auto-sensing Switch 4900, 4924, and 4950: Enabled

IP Address 169.254.100.100 Subnet Mask 255.255.0.0

Enabled

Switch 4900 SX: Not applicable

* This default IP address is used if the unit is operating in standalone mode, and/or no other

Switches on the network have this IP address. If this default IP address is already in use then the Switch detects this and configures itself with an IP address in the range 169.254.1.0 to

169.254.254.255.

INSTALLING THE SWITCH

This chapter contains the information you need to install and set up the Switch. It covers the following topics:

■ Package Contents

■ Choosing a Suitable Site

■ Rack-mounting

■ Placing Units On Top of Each Other

■ Creating an XRN Distributed Fabric

■ The Power-up Sequence

■ Switch 4950 — GBIC Operation

WARNING: Safety Information. Before installing or removing any components from the Switch or carrying out any maintenance procedures, you must read the safety information provided in Appendix A of this guide.

AVERTISSEMENT: Consignes de sécurité. Avant d'installer ou d'enlever tout composant du Switch ou d'entamer une procédure de maintenance, lisez les informations relatives à la sécurité qui se trouvent dans l'Appendice A de ce guide.

VORSICHT: Sicherheitsinformationen. Bevor Sie Komponenten aus dem Switch entfernen oder dem Switch hinzufuegen oder Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen, die in Anhang A in diesem Handbuch aufgefuehrt sind.

22 CHAPTER 2: INSTALLING THE SWITCH

Package Contents ■ Switch unit

■ CD-ROM

■ This Guide

■ Management Quick Reference Guide

■ Release Notes

■ Warranty Flyer

■ Power Cord

■ 2 x securing brackets

■ 6 x screws

■ 4 x rubber feet

Choosing a Suitable Site

The Switch is suited for use in an internal wiring closet, a network room, or telecommunications room, where it can be mounted in a standard 19-inch equipment rack, or free-standing.

CAUTION: Ensure that the ventilation holes are not obstructed.

To ensure this product provides optimum performance, high speed fans are used to provide ventilation. These fans have a high audible output.

When deciding where to position the Switch, ensure that:

■ Cabling is located away from:

■ sources of electrical noise such as radios, transmitters and

broadband amplifiers.

■ power lines and fluorescent lighting fixtures.

■ The Switch is accessible and cables can be connected easily.

■ Water or moisture cannot enter the case of the Switch.

■ Air flow is not restricted around the Switch or through the vents in the

side of the Switch. 3Com recommends that you provide a minimum of 25 mm (1 in.) clearance.

■ Air temperature around the Switch does not exceed 40 °C (104 °F).

If the Switch is installed in a 19-inch rack or closed assembly its local air temperature may be greater than room ambient temperature.

Rack-mounting 23

■ The air is as free from dust as possible.

■ The unit is installed in a clean, air conditioned environment.

■ No more than four Switch units are placed on top of one another, if

the units are free-standing.

■ The Switch is situated away from sources of conductive (electrical)

dust, for example laser printers.

■ The AC supply used by the Switch is separate to that used by units

that generate high levels of AC noise, for example air conditioning units and laser printers.

Rack-mounting The Switch is 1.5U and will fit in most standard 19-inch racks. However,

as each Switch requires a shelf or runner to support its weight, you may need to allow a 2U space within the rack for each Switch.

WARNING: The Switch should only be used in a rack if it is mounted on runners, a shelf, or a tray to support the weight. The rack-mount kits alone are not sufficient to support the weight of the switch. The rackmount kits must not be used to suspend the Switch from under a table or desk, or attach it to a wall.

CAUTION: Disconnect all cables from the Switch before continuing. Remove all self adhesive pads from the underside of the Switch if they have been fitted.

CAUTION: You must use a shelf or support that will not obstruct the air flow through the side panels of the Switch.

To rack-mount your Switch:

1 Place the Switch the right way up on a hard flat surface, with the front

facing towards you.

2 Locate a securing bracket over the mounting holes on one side of the

Switch, as shown in Figure 9

3 Insert the three screws and tighten with a suitable screwdriver.

24 CHAPTER 2: INSTALLING THE SWITCH

Figure 9 Fitting a bracket for rack-mounting

Placing Units On Top of Each Other

Creating an XRN Distributed Fabric

You must use the screws supplied with the securing brackets. Damage caused to the unit by using incorrect screws invalidates your warranty.

4 Repeat steps 2 and 3 for the other side of the Switch. 5 Insert the Switch into the 19-inch rack and secure with suitable screws

(not provided). Ensure that ventilation holes are not obstructed.

6 Connect network cabling.

If the Switch units are free-standing, up to four units can be placed one

on top of the other. If you are mixing a variety of SuperStack

3 Switch

and Hub units, the smaller units must be positioned at the top.

If you are placing Switch units one on top of the other, you must use the self-adhesive rubber pads supplied. Apply the pads to the underside of each Switch, sticking one in the marked area at each corner. Place the Switch units on top of each other, ensuring that the pads of the upper unit line up with the recesses of the lower unit.

Switch 4900 Series units and 3Com Switch 4050/4060 units can be interconnected to create an XRN Distributed Fabric and then treated as a single manageable unit with one IP address. A combination of any two of these units is allowed to be interconnected.

Creating an XRN Distributed Fabric 25

S/N: XXXX/7XXXXXXXXX

XRN Interconnect Module (3C17716)

Console

(max) 19200,8,1,N

Unit 1 Unit 2

Activity Status

S/N: XXXX/7XXXXXXXXX

XRN Interconnect Module (3C17716)

Console

(max) 19200,8,1,N

Unit 1 Unit 2

Activity Status

How To Interconnect

Units

To interconnect any two Switch 4900 Series or Switch 4050/4060 units you will need to order the XRN Interconnect Module Kit (3C17715). The kit consists of two XRN Interconnect Modules and an Interconnect Cable. Both Switches must have an unused expansion slot to allow an Interconnect Module to be fitted.

Figure 10 Interconnecting two Switch 4900 units

w i

t c h

4 9

1 7

X X

SUPPLY DATA V-

90 - 240

5 0

/ 6 0

4 .

T O

I N

C T

1 2

Con

sole

ax)

19200

,8,1,N

it 1

t 2

S /N

: X

X X

X /7

ivity

X X

Sta

X X

RN Interconn

ect Module (3C17716)

w i

t c h

4 9

r i

l N

7 0

X X

SUPPLY DATA V-

90 - 240

5 0 /6

4 .

T O

I N

E C

1 2

Console

ax) 19200,8,1,N

it 1

it 2

S /

: X

X X

ctiv

X /

7 X

tatu

X X

XRN Interconnect Module (3C17716

)

For information on ordering the XRN Interconnect Kits contact your supplier. For illustrations and information on how to install the XRN Interconnect Kits, refer to the user documentation that accompanies these Kits.

Rules For

Interconnecting Units

This information is also provided in the user documentation that accompanies the XRN Interconnect Kits.

■ The maximum number of Switch units that can be interconnected is

two.

■ XRN Interconnect Modules are NOT hot-swappable or hot-insertable.

Ensure that the Switch is powered off before inserting or removing an Interconnect Module.

■ Only 3Com XRN Interconnect Cables can be used to connect two

Interconnect Modules.

■ It is not possible to interconnect the Switch 4900 Series and Switch

4050/4060 units with any other 3Com device.

■ 3Com strongly recommends that you upgrade all Switches to be

interconnected to the latest software agent.

■ 3Com recommends that you initialize a Switch unit that has previously

been used elsewhere in your network before you interconnect to an

+ 58 hidden pages

3Com Switch 4900, 3C17700, Switch 4900 SX, 3C17702, Switch 4924 Getting Started Manual

Specifications and Main Features

Frequently Asked Questions

User Manual