3COM C17302, C17304, 3C17300 User Manual

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SuperStack® 3

Switch 4200 Series Getting Started Guide

3C17300 3C17302 3C17304

http://www.3com.com/

Part No. DUA1730-0AAA02 Published October 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.

3Com Technologies provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, 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.

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.

UNITED STATES GOVERNMENT LEGEND

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.

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

3Com, the 3Com logo and SuperStack are all registered trademarks of 3Com Corporation. Novell and NetWare are registered trademarks of Novell Incorporated. Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated. All other company and product names may be trademarks of the respective companies with which they are

associated.

Environmental Statement

It is a 3Com policy to be environmentally friendly in all operations. This manual is printed on paper that comes from sustainable, managed European forests. The production process for making the pulp has a reduced AOX level (adsorbable organic halogen) resulting in elemental chlorine-free paper.

The paper is fully biodegradable and recyclable.

CONTENTS

ABOUT THIS GUIDE

Conventions 8 Related Documentation 9

Accessing Online Documentation 10 Product Registration 10 Documentation Comments 10

1 INTRODUCING THE

UPERSTACK 3 SWITCH 4200 SERIES

About the Switch 4200 Series 12

Summary of Hardware Features 12 Switch 4200 Series — Front View Detail 13

10BASE-T/ 100BASE-TX Ports 14

10/100/1000BASE-T Ports 14

GBIC Ports 14

LEDs 15 Switch 4200 Series — Rear View Detail 17

Power Socket 17

Redundant Power System Socket 17

Console Port 17 Default Settings 18

2 INSTALLING THE SWITCH

Package Contents 20 Choosing a Suitable Site 20 Rack-mounting 21 Placing Units On Top of Each Other 23 Stacking Units 23 The Power-up Sequence 24

Powering-up the Switch 4200 Series 24

Checking for Correct Operation of LEDs 24 Connecting a Redundant Power System 25 Choosing the Correct Cables 25 Choosing the correct Fiber cables 26

GBIC Operation 27

Approved GBIC Transceivers 27 Inserting a GBIC Transceiver 27

3 SETTING UP FOR MANAGEMENT

Setting Up Overview 32

IP Configuration 33 Preparing for Management 34

Manually Configuring IP Information 35

Connecting to a Front Panel Port 35 Connecting to the Console Port 38

Viewing Automatically Configured IP Information 42

Using 3Com Network Supervisor 42 Connecting to the Console Port 42

Methods of Managing a Switch 45

Command Line Interface Management 45 Web Interface Management 46 SNMP Management 46

Setting Up Command Line Interface Management 47

CLI Management via the Console Port 47 CLI Management over the Network 47

Setting Up Web Interface Management 48

Pre-requisites 48 Web Management Over the Network 49

Setting Up SNMP Management 49

Pre-requisites 50

Default Users and Passwords 50

Changing Default Passwords 50

4 PROBLEM SOLVING

Solving Problems Indicated by LEDs 54 Solving Hardware Problems 55 Solving Communication Problems 55

Solving Stack Formation Problems 56 Solving Software Upgrade Problems 57

A SAFETY INFORMATION

Important Safety Information 60 L’information de Sécurité Importante 62 Wichtige Sicherheitsinformationen 64

B PIN-OUTS

Null Modem Cable 67 PC-AT Serial Cable 67 Modem Cable 68 RJ-45 Pin Assignments 68 1000BASE-T RJ-45 Pin Assignments 69

C TECHNICAL SPECIFICATIONS

Switch 4226T (3C17300) 71

Switch 4250T (3C17302) 73

Switch 4228G (3C17304) 74

D TECHNICAL SUPPORT

Online Technical Services 75

World Wide Web Site 75

3Com Knowledgebase Web Services 76

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

Internet 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 a

SuperStack

3 Switch 4200 in its default state.

This guide is intended for use with all Switch 4200 Series models:

■ Switch 4226T (3C17300) — 24 10BASE-T/100BASE-TX ports,

2 10/100/1000BASE-T ports

■ Switch 4250T (3C17302) — 48 10BASE-T/100BASE-TX ports,

2 10/100/1000BASE-T ports

■ Switch 4228G (3C17304) — 24 10BASE-T/100BASE-TX ports,

2 10/100/1000BASE-T ports and 2 GBIC ports

All procedures described in this guide apply to all models except where stated.

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

Table 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

Warning Information that alerts you to potential personal injury

Table 2 Text Conventions

Convention Description

Screen displays This typeface represents information as it appears on the

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

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

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:

potential damage to an application, system, or device

screen.

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>.

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

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.

Product Registration

Documentation Comments

You can register your SuperStack 3 Switch 4200 on the 3Com Web site:

http://3com.com/register

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 DUA 1730-0AAA0x SuperStack 3 Switch 4200 Series Getting Started Guide Page 21

INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES

This chapter contains introductory information about the Switch 4200 Series and how it can be used in your network. It covers summaries of hardware and software features and also the following topics:

■ About the Switch 4200 Series

■ Switch 4200 Series — Front View Detail

■ Switch 4200 Series — Rear View Detail

■ Default Settings

12 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES

About the Switch 4200 Series

Summary of

Hardware Features

The Switch 4200 Series are stackable 10/100/1000 Mbps devices which consists of:

■ 24 or 48 10BASE-T/100BASE-TX ports

■ 2 10/100/1000BASE-T ports

■ 2 GBIC ports (Switch 4228G only)

The Switch provides high-performance workgroups with a backbone to server connection. You can also add the Switch 4200 Series to any

SuperStack

system as your network grows.

Ta bl e 3 summarizes the hardware features that are supported by the

Switch 4200 Series.

Table 3 Hardware features

Feature Switch 4200 Series Addresses ■ Up to 8000 supported

■ Up to 64 permanent entries

Auto-negotiation ■ Supported on all ports

■ Auto MDI/MDI-X

Forwarding Modes Store and Forward Duplex Modes Half and full duplex on all 10/100 ports. Full duplex

on 1000BASE-T ports and full duplex on GBIC ports

Flow Control In full duplex operation all ports are supported Smart Auto-sensing Supported on all ports except GBIC ports which are

Traffic Prioritization Supported (IEEE 802.ID): 2 queues per port Ethernet and Fast Ethernet

Ports Gigabit Ethernet Auto-negotiating 10/100/1000BASE-T ports GBIC Auto-negotiating GBIC ports (Switch 4228G only) RPS Support Connects to SuperStack Advanced Redundant

Mounting 19-inch rack or stand-alone mounting

single speed ports. Smart auto-sensing allows auto-negotiating ports to

monitor and detect a high error rate on a link, or a problem in the "physical" interconnection to another port and react accordingly.

Auto-negotiating 10BASE-T/100BASE-TX ports

Power System (ARPS) (3C16071, 3C16071A or 3C16071B)

About the Switch 4200 Series 13

Switch 4200 Series — Front View Detail

153

3262

427

6175

10BASE-T / 100BASE-TX

6295

Figure 1 Switch 4226T (3C17300) — front view

10BASE-T / 100BASE-TX

RJ-45 Ports

Unit LEDs

910221123 12 24

197

Power / Self Test LED

Power/

Self Test

25 / Up

2 3

26 / Down

Alert

Unit

Alert LED

10/100/1000BASE-T

ports

Figure 2 Switch 4250T (3C17302) — front view

RJ-45 Ports

31730

13361235

153814

3C17300 Superstack 3Switch 4226T

3C17302 Superstack 3Switch 4250T

194218

Unit LEDs

234622452144

Power / Self Test LED

Power/ Self Test

Alert

Unit

Alert LED

10/100/1000BASE-T

ports

Down

Figure 3 Switch 4228G (3C17304) — front view

10BASE-T / 100BASE-TX

RJ-45 Ports

Unit LEDs

153

6175

197

910221123 12 24

Alert LED

Power / Self Test LED

Power/

Self Test

25 / Up

Alert

Unit

26 / Down

10/100/1000BASE-T

ports

3C17304 Superstack 3

GBIC ports

Switch 4228G

14 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES

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.

10BASE-T/

100BASE-TX Ports

10/100/1000BASE-T

Ports

GBIC Ports This section applies to the SuperStack 3 Switch 4228G only.

The Switch has 24 or 48 auto-negotiating 10BASE-T/100BASE-TX ports configured as Auto MDIX (cross-over). While auto-negotiation is enabled, these ports can automatically detect whether they need to operate in MDI or MDIX mode. Alternatively, you can manually set these ports to 10BASE-T half duplex, 10BASE-T full duplex, 100BASE-TX half duplex or 100BASE-TX full duplex. The maximum segment length is 100 m (328 ft) over Category 5 twisted pair cable.

The Switch has two auto-negotiating 10/100/1000BASE-T ports configured as Auto MDIX (cross-over). While auto-negotiation is enabled, these ports can automatically detect whether they need to operate in MDI or MDIX mode. These ports provide 10/100/1000 Mbps full duplex connections to other Gigabit Ethernet devices. Full duplex allows packets to be transmitted and received simultaneously which, in effect, doubles the potential throughput of a link. These ports require either straight-through or cross-over Category 5 cables with RJ-45 connectors at both ends. The maximum UTP cable length is 100 m (328 ft) over Category 5 cable.

The 10/100/1000BASE-T ports will auto-negotiate to the appropriate speed.

The two GBIC ports support Category 5 twisted pair cable and 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.

About the Switch 4200 Series 15

Fiber GBIC's.

The default state for these ports is auto-negotiation enabled, where speed, duplex and flow control modes are negotiated. Because 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.

1000BaseT GBIC's

These ports will auto-negotiate to 1000BASE-T, full duplex only. Although it is not possible to disable auto-negotiation it is possible to change the advertised capabilities for flow control support, effectively enabling or disabling flow control.

LEDs Ta ble 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 “Solving Problems Indicated by LEDs”

on page 54.

It is not possible to determine the duplex mode from the LEDs. For more detailed information, refer to the “SuperStack

3 Switch Management Interface Reference Guide” on the CD-ROM that is supplied with the Switch.

Table 4 LED behavior

LED Color Indicates Port Status LEDs 10BASE-T/100BASE-TX ports

Green A 100 Mbps link is present and the port is enabled. Green flashing Packets are being transmitted/received on the port. Yellow A 10 Mbps link is present and the port is enabled. Yellow flashing Packets are being transmitted/received on the port. Green / Yellow

alternating Off No link is present.

Port Status LEDs GBIC ports

Green A 1000 Mbps link is present and the port is enabled. Green flashing Packets are being transmitted/received on the port.

Port Status LEDs 10/100/1000BASE-T ports

Green A 1000 Mbps link is present and the port is enabled.

(continued)

A 10 or 100 Mbps link is present, but the port is disabled.

16 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES

LED Color Indicates

Green flashing Packets are being transmitted/received on the port. Yellow A 10 or 100 Mbps link is present and the port is enabled. Yellow flashing Packets are being transmitted/received on the port. Green / Yellow

alternating Off No link is present.

Unit LEDs

1–4 Green When the Switch forms a stack with other Switch 4200

Off The Switch initialization process is not complete.

Power/Self Test LED

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

Yellow The Switch has failed its Power On Self Test.

Off The Switch is not receiving power or there is a fault with the

Alert LED

Green flashing The Switch Alert LED has been configured via the CLI or Web

Off The Switch Alert LED has been configured via the CLI or Web

A 10, 100 or 1000 Mbps link present but disabled.

Series units the LED indicates the position of the unit in the stack and that a link is present. Unit LED number 1 can also indicate a stand-alone Switch.

(which includes running a Power On Self Test).

Refer to Chapter 4 Solving Problems Indicated by LEDs.

Power Supply Unit.

Interface to flash.

Interface to be off (Default state).

About the Switch 4200 Series 17

Switch 4200 Series — Rear View Detail

Power Socket

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

Redundant Power

System Socket

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

Figure 4 Switch 4200 Series — rear view

Supply Data Warning Label

Console

(max) 19200,8,1,N

Redundant Power System Socket

Console Port

in the range 90-240 VAC.

To protect against internal power supply failure, you can use this socket to connect a Switch 4200 to a SuperStack Advanced Redundant Power System (RPS). See “Connecting a Redundant Power System”

on page 25.

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

18 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES

Default Settings Ta b le 5 shows the default settings for the Switch 4200 Series:

Table 5 Default Settings

Feature Switch 4200 Series Automatic IP Configuration Enabled Port Status Enabled Port Speed All ports are auto-negotiated Duplex Mode All ports are auto-negotiated Flow Control ■ Enabled in half duplex

■ Auto-negotiated in full duplex

Broadcast Storm Control Enabled Virtual LANs (VLANs) All ports belong to the untagged Default VLAN

IP Multicast Filtering Filtering enabled Rapid Spanning Tree Protocol Fast Start: RMON Alarm Enabled Smart Auto-Sensing Enabled LACP (10/100/1000BASE-T ports and GBIC ports only)

Quality of Service (QoS) All ports prioritize NBX VoIP IP.

(VLAN 1) with 802.1Q learning operational

Enabled Enabled on all ports

Enabled

All ports set to “best effort” for all other traffic.

If you initialize a Switch unit by selecting System > Control > Initialize in the Web interface or by entering system control initialize

the Command Line Interface, the following settings are retained to allow you to connect to and manage the Switch:

■ IP Address

■ Subnet Mask

■ Default Router

INSTALLING THE SWITCH

This chapter contains the information you need to install and set up the Switch 4200 Series. It covers the following topics:

■ Package Contents

■ Choosing a Suitable Site

■ Rack-mounting

■ Placing Units On Top of Each Other

■ The Power-up Sequence

■ GBIC Operation

WARNING: Safety Information. Before installing or removing any components from the Switch 4200 Series 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 4200 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 4200 entfernen oder dem Switch 4200 hinzufuegen oder Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen, die in Appendix A (Anhang A) in diesem Handbuch aufgefuehrt sind.

20 CHAPTER 2: INSTALLING THE SWITCH

Package Contents ■ Switch unit

■ CD-ROM

■ Getting Started Guide (this guide)

■ Management Quick Reference Guide

■ Release Notes

■ Unit Information Labels

■ Warranty Information

■ Power Cord

■ 2 x Mounting brackets

■ 4 x Screws

■ 4 x Rubber feet

Choosing a Suitable Site

The Switch is suited for use on a desktop, either free standing or mounted in a standard 19-inch equipment rack. Alternatively, the Switch can be mounted in a wiring closet or equipment room, as an aggregator for other Hubs and Switches. A rack-mounting kit containing two mounting brackets is supplied with the Switch.

CAUTION: Ensure that the ventilation holes are not obstructed.

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 25mm (1in.) 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 21

■ The air is as free from dust as possible.

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

dust, for example, laser printers.

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

■ 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.

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

the units are free-standing.

Rack-mounting The Switch 4200 Series are 1U high and will fit in most standard 19-inch

racks.

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.

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 mounting bracket over the mounting holes on one side of the

Switch, as shown in Figure 5

22 CHAPTER 2: INSTALLING THE SWITCH

Figure 5 Fitting a bracket for rack-mounting

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

You must use the screws supplied with the mounting 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. 7 Finally place a unit information label on the unit in an easily accessible

position. The unit information 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.

Placing Units On Top of Each Other 23

Placing Units On Top of Each Other

If the Switch units are free-standing, up to eight 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.

Stacking Units Up to four Switch 4200 Series units can be stacked together and then

treated as a single manageable unit with one IP address. Any combination of Switch 4200 Series units is allowed in a single stack. The units are connected together via the 10/100/1000BASE-T ports on the front of the unit as shown in Figure 6 the port marked with ‘up’ is connected to the port marked with ‘down’ on the unit above. Cable lengths of between 14 cm (5.5 in) and 100 m (328 ft) can be used for stacking.

Figure 6 Stacking example

3262

6295

427

153

31730

6175

197

6175

197

6175

197

910221123 1224

. Starting from the base of the stack,

13361235

Power/

SelfTest

25/ Up

Alert

Unit

Power/

SelfTest

25/ Up

Alert

Unit

Power/

SelfTest

25/ Up

Alert

Unit

153814

26/ Down

194218

3C17304Superstack 3 Switch 4228G

3C17300Superstack 3 Switch 4226T

3C17302Superstack 3 Switch 4250T

234622452144

Power/ SelfTest

Alert

Unit

Down

The unit LEDs will display the unit number in the stack, from 1 at the bottom to 4 at the top.

3Com recommends that when you add a new unit to a stack, you should first initialize it to factory default settings

Stack renumbering occurs when another Switch 4200 Series unit is added to the bottom of an established stack except when the stack is already 4 units high. In this instance the ‘down’ port on the bottom unit of the existing stack will be disabled and its LED will flash green. You will then not be able to use that port again until the link is lost on that port.

24 CHAPTER 2: INSTALLING THE SWITCH

When another Switch 4200 Series unit is added to the top of an established stack, no stack renumbering occurs. If however the unit being added takes the stack height above 4 then the ‘up’ port on the top unit of the existing stack will be disabled and its LED will flash green. You will then not be able to use that port again until the link is lost on that port.

When removing a Switch from a stack, note the following:

■ Removing a Switch 4200 Series unit from the bottom of an existing

stack will cause the remaining stack to renumber.

■ Removing a Switch 4200 Series unit from the middle of an existing

stack will cause the other Switches in the stack to divide into two stacks. Units below the unit removed will not renumber, units above will renumber.

■ Removing a Switch 4200 Series unit from the top of an existing stack

will have no effect on the remaining stack.

If you are having problems, refer to “Solving Stack Formation Problems” on page 56

The Power-up Sequence

Powering-up the

Switch 4200 Series

Checking for Correct

Operation of LEDs

The following sections describe how to get your Switch 4200 Series powered-up and ready for operation.

Use the following sequence of steps to power-up the Switch.

1 Plug the power cord into the power socket at the rear of the Switch. 2 Plug the other end of the power cord into your power outlet.

The Switch powers-up and runs through its Power On Self Test (POST), which takes approximately 10 seconds.

During the Power On Self Test, all ports on the Switch are disabled and the LEDs light in a set sequence.

When the POST has completed, check the Power On Self Test LED t o make sure that your Switch is operating correctly. Ta b le 6

shows possible

colors for the LED.

The Power-up Sequence 25

Table 6 Power/Self Test LED colors

Color State

Green The Switch is powered-up and operating normally. Yellow The Switch has failed its Power On Self Test. Off The Switch is not receiving power.

In addition, check the Unit LEDs on all Switches in the stack. If a Unit LED is off, initialization is not complete. 3Com recommends that you do not use the Switch's management interface until the Unit LED is green.

If there is evidence of a problem, see “Solving Problems Indicated by LEDs” on page 54.

Connecting a

Redundant Power

System

Choosing the Correct

Cables

You can connect a SuperStack Advanced Redundant Power System (3C16071, 3C16071A or 3C16071B) to the Switch. This unit, which is also known as an RPS, is designed to maintain the power to your Switch if a power supply failure occurs.

For normal redundancy, the unit requires one Type 2A Power Module (part number 3C16074A). For full redundancy, the unit requires two type 2A Power Modules combined using a Type 2 Y-Cable (part number 3C16078).

CAUTION: The Switch has no ON/OFF switch; the only method of connecting or disconnecting mains power is by connecting or disconnecting the power cord.

CAUTION: The Switch can only use a SuperStack Advanced Redundant Power System output.

All of the ports on the front of the Switch 4200 Series are Auto-MDIX, that is they have a cross-over capability. The port can automatically detect whether it needs to operate in MDI or MDIX mode. Therefore you can make a connection to a port with a straight-through (MDI) or a cross-over cable (MDIX).

The Auto-MDIX feature only operates when auto-negotiation is enabled.

If auto-negotiation is disabled, all the Switch ports are configured as MDIX (cross-over). If you want to make a connection to another MDIX

26 CHAPTER 2: INSTALLING THE SWITCH

port, you need a cross-over cable. Many ports on workstations and servers are configured as MDI (straight-through). If you want to make a connection to an MDI port, you need to use a standard straight-through cable. See Ta ble 7

3Com recommends that you use Category 5 twisted pair cable — the maximum segment length for this type of cable is 100 m (328 ft).

CAUTION: If you want to install the Switch using a Category 5E or Category 6 cable, 3Com recommends that you briefly connect the cable to a grounded port before connecting network equipment. If you do not, the cables Electrostatic Discharge (ESD) may damage the Switch's port.

You can create a grounded port by connecting all wires at one end of a UTP cable to an earth ground point, and the other end to a female RJ-45 connector located, for example, on a Switch rack or patch panel. The RJ-45 connector is now a grounded port.

Table 7 Cables required to connect the Switch 4200 Series to other devices if

auto-negotiation is disabled

Choosing the correct

Fiber cables

Cross-over Cable Straight-through Cable

Switch to Switch (MDIX to MDIX)

Switch to Hub (MDIX to MDIX)

Switch to PC (NIC) (MDIX to MDI)

✓ ✓

✕ ✕

✓

Choose from the following cable options:

■ The 1000BASE-SX ports can be connected to multimode fiber cables

only.

■ The 1000BASE-LX and LH70 GBIC ports use multimode or

single-mode fiber optic cables.

For detailed information on fiber cable specifications, refer to the SuperStack 3 Implementation Guide that accompanies your Switch.

If you wish to connect a 1000BASE-SX MT-RJ port to a fiber port with a different type of connector, for example, SC or ST please contact your network supplier for a suitable patch cable.

GBIC Operation 27

GBIC Operation The following section describes how to insert a GBIC transceiver into a

GBIC port. This section applies to the SuperStack 3 Switch 4228G only.

GBIC transceivers are hot-insertable and hot-swappable. You can remove them from and insert them into any GBIC port without having to power down the Switch.

Approved GBIC

Transceivers

Inserting a GBIC

Transceiver

The 3Com approved GBIC transceivers are:

■ 1000BASE-SX GBIC (3CGBIC91)

■ 1000BASE-LX GBIC (3CGBIC92)

■ 1000BASE-T GBIC (3CGBIC93)

■ 1000BASE-LH70 GBIC (3CGBIC97)

These are correct at the time of publication.

To access the latest list of approved GBIC transceivers for the Switch on the 3Com Corporation World Wide Web site, enter this URL into your internet browser:

http://www.3com.com

The URL is case sensitive.

To be recognised as valid, the GBIC transceiver must have the following characteristics:

■ 1000BASE-SX, 1000BASE-LX, 1000BASE-T or 1000BASE-LH70 media

type:

■ 1000BASE-SX GBIC transceiver

Use this transceiver to connect the Switch directly to a multimode fiber-optic cable.

■ 1000BASE-T GBIC transceiver

Use this transceiver to connect the Switch directly to Category 5 twisted-pair cable.

■ 1000BASE-LX GBIC transceiver

28 CHAPTER 2: INSTALLING THE SWITCH

■ 1000BASE-LH70 GBIC transceiver

■ Fiber SC connector

■ Type 4 GBIC with internal EEPROM fitted.

If the GBIC transceiver is faulty, it will not operate within the Switch. See

“Solving Hardware Problems”

Do not use non-3Com GBICs. If the GBIC transceiver is invalid it will not be recognised by the Switch.

Use the following sequence of steps to activate the GBIC ports.

1 To insert one of the transceivers into a GBIC expansion port on the

Switch:

Use this transceiver to connect the Switch directly to a single-mode fiber-optic cable or to multimode fiber using a conditioned launch cable.

on page 55.

a Orient the transceiver so that the fiber-optic duplex subscriber

connector (SC) is toward you, as shown in Figure 7

b Gently slide the transceiver into the GBIC port until it clicks into place.

2 If you wish to remove the transceiver, compress the side tabs and gently

pull the transceiver out of the port.

CAUTION: GBIC transceivers are keyed and can be properly inserted only one way. If the transceiver does not click when you insert it, remove it, turn it over, and reinsert it.

GBIC Operation 29

Figure 7 Inserting a GBIC Transceiver

erstack 3 Switch 4228G

GBIC Ports

GBIC

Transceiver

3 The transceiver connects to the network using a duplex SC connector.

Attach a male duplex SC connector on the network cable into the duplex SC connector on the transceiver.

4 Connect the other end of the cable to a device fitted with an appropriate

Gigabit Ethernet connection.

5 Check the LEDs on the front of the Switch to ensure that it is operating

correctly. Refer to “LEDs”

on page 15 for more information.

30 CHAPTER 2: INSTALLING THE SWITCH

SETTING UP FOR MANAGEMENT

Your Switch can operate in its default state, that is, you can install it and it will work straight away (plug-and-play). However, to make full use of the features offered by the Switch, and to change and monitor the way it works, you have to access the management software that resides on the Switch. This is known as managing the Switch.

Managing the Switch can help you to improve the efficiency of the Switch and therefore the overall performance of your network.

This chapter explains the initial set up of the Switch and the different methods of accessing the management software to manage a Switch. It covers the following topics:

■ Setting Up Overview

■ Manually Configuring IP Information

■ Viewing Automatically Configured IP Information

■ Methods of Managing a Switch

■ Setting Up Command Line Interface Management

■ Setting Up Web Interface Management

■ Setting Up SNMP Management

■ Default Users and Passwords

32 CHAPTER 3: SETTING UP FOR MANAGEMENT

Setting Up Overview

This section gives an overview of what you need to do to get your Switch set up and ready for management when it is in its default state. The whole setup process is summarised in Figure 8

. Detailed procedural steps

are contained in the sections that follow. In brief, you need to:

■ Configure IP information manually for your Switch or view the

automatically configured IP information

■ Prepare for your chosen method of management

Figure 8 Initial Switch Setup and Management Flow diagram

Power up the Switch.

Plug and Play Setup

How do you want to connect to the Switch?

Connect to a front panel

port and use the Web

Initial IP Information Setup

Interface or Command

Line Interface.

Page 35.

Yes

IP information is automatically configured.

Do you want to

configure the IP information?

Connect to the console

port and use the

Command Line Interface.

Page 38.

Page 33.

manually

How do you want to view the automatically

Use 3Com Network

Supervisor (3NS).

Page 42.

configured IP information?

Connect to a console

port and use the

Command Line Interface.

Page 42.

How do you want to Manage your Switch? Page 45.

SNMP

Page 49.

Web Interface

Connect over the

network.

Page 49.

Feature Management

Command Line Interface

Connect via the

console port.

Page 47.

Connect over the

network via Telnet.

Page 47.

CAUTION: To protect your Switch from unauthorized access, you must change all three default passwords as soon as possible, even if you do not intend to actively manage your Switch. For more information on default users and changing default passwords, see “Default Users and

Passwords” on page 50.

Setting Up Overview 33

IP Configuration You can use one of the following methods to allocate IP information to

your Switch (essential if you wish to manage your Switch across the network).

Manual IP Configuration

You can choose to configure the IP information yourself. The Switch remembers the information that you enter until you change it again or set the configuration method to Automatic.

You should use the Manual IP configuration method if:

■ you do not have a DHCP or BootP server on your network, or

■ you want to remove the risk of the IP address ever changing, or

■ your DHCP or BootP server does not allow you to allocate static IP

addresses. (Static IP addresses are necessary to ensure that the Switch is always allocated the same IP information.)

For most installations, 3Com recommends that you configure the Switch IP information manually. This makes management simpler and more reliable as it is not dependent on a DHCP or BootP server, and eliminates the risk of the IP address changing.

If you wish to manually enter IP information for your Switch, work through the “Manually Configuring IP Information”

section on page 35.

Automatic IP Configuration

By default the Switch tries to configure itself with IP information without requesting user intervention. It tries to obtain an IP address from a DHCP or BootP server on the network.

If neither server is found, the Switch will configure itself with its default IP address 169.254.100.100 if it is operating in a standalone mode, and/or no other Switches on the network have this IP address. If this default IP address is already in use on the network then the Switch detects this and configures itself with an IP address in the range 169.254.1.0 to

169.254.254.255.

This process is known as Auto-IP and is the same mechanism used by Windows 98 and Windows 2000. IP addresses configured by Auto-IP are temporary as they cannot be routed but are useful for small networks which are not connected to other networks, or for initial configuration.

34 CHAPTER 3: SETTING UP FOR MANAGEMENT

However, as soon as a DHCP or BootP server is detected, the Switch will configure itself with the IP address allocated by that server.

When using automatic IP configuration it is important that the IP address of the Switch is static, otherwise you will not know what the IP address is and it will be difficult to manage. Most DHCP and BootP servers allow static IP addresses to be configured so that you know what IP address will be allocated to the Switch. Refer to the documentation that accompanies your DHCP/BootP server.

For a detailed description of how automatic IP configuration operates, please refer to the Implementation Guide on the CD-ROM that accompanies your Switch or on the 3Com Web site.

You should use the automatic IP configuration method if:

■ your network uses DHCP or BootP to allocate IP information, or

■ flexibility is needed. If the Switch is re-deployed onto a different

subnet, it will automatically reconfigure itself with an appropriate IP address, instead of you having to manually reconfigure the Switch.

Preparing for

Management

If you use the automatic IP configuration method, you need to discover the automatically allocated IP information before you can begin management. Work through the “Viewing Automatically Configured IP

Information” section on page 42.

Once your Switch’s initial set up is complete you can set up your chosen management method as described in “Methods of Managing a Switch” on page 45

For detailed information about the specific web interface operations and command line interface commands and problem solving, refer to the “SuperStack

3 Switch Management Interface Reference Guide” on the

CD-ROM that is supplied with the Switch or on the 3Com Web site.

Manually Configuring IP Information 35

Manually Configuring IP Information

Connecting to a Front

Panel Port

You can manually configure the Switch IP information in the following ways:

■ Connecting to a front panel port — Connect a workstation using an

Ethernet cable to a front panel port of the Switch. You can then manually enter IP information using the web interface or the command line interface (CLI).

■ Connecting to the console port — Connect a workstation using a

console cable to the console port of the Switch. You can then manually enter IP information using the command line interface (CLI).

To set up your Switch manually you can make a connection to a front panel port. You must do this whilst the Switch is offline, that is, before you connect the Switch to a network.

The procedure described in this section assumes the unit has been powered up in standalone mode and has the default IP address of

169.254.100.100.

Pre-requisites

■ A workstation running Windows 95/98/2000 or Windows NT.

■ A Network Interface Card (NIC).

■ A Category 5 twisted pair Ethernet cable with RJ-45 connectors.

■ A suitable Web browser — refer to “Choosing a Browser”on page 48.

■ You need to have the following so that you can manually set up the

Switch with IP information:

■ IP address

■ subnet mask

■ default gateway

36 CHAPTER 3: SETTING UP FOR MANAGEMENT

Connecting the Workstation to the Switch

1 Connect the workstation to a front panel port using an Ethernet cable as

shown in Figure 9

Figure 9 Connecting a workstation to the Switch via a front panel port

To connect the cable: a Attach an RJ-45 connector at one end of the Ethernet cable to the

Network Interface Card (NIC) in the workstation.

b Connect the RJ-45 connector at the other end of the cable to one of

the front panel ports on the Switch.

Do not interconnect the Switch to any other unconfigured Switch.

Configuring the Workstation with IP Information

You need to change the IP address and subnet mask of the workstation that you have connected to the Switch. Make a note of the existing settings so you can return to them later. Change the workstation to the following settings:

■ IP address — 169.254.100.99

■ Subnet mask — 255.255.0.0

Setting Up the Switch with IP Information

You are now ready to manually set up the Switch with IP information. You can do this using the Web interface or the command line interface (CLI) via telnet.

Using the Web Interface

1 Power-up the Switch. This takes approximately one minute. 2 Open a suitable Web browser and enter 169.254.100.100 in the

Location Address field. This is the default IP address that is automatically assigned to an offline unit.

Manually Configuring IP Information 37

If there is no response, wait for one minute then re-enter the default IP address.

3 At the login and password prompts, enter admin as your user name and

press Return at the password prompt (default user name and password). If you have logged on correctly, a set of Getting Started pages are displayed.

4 The Getting Started pages allow you to enter basic setup information for

the Switch. Select Manual and then enter the IP address, subnet mask, and default gateway that you want the Switch to use when it is connected to the network. The final page displays a summary of the information entered.

The initial set up of your Switch is now complete and the Switch is ready for you to set up your chosen management method. See “Methods of

Managing a Switch” on page 45.

Using Command Line Interface via Telnet

Accessing the Command Line Interface via Telnet or Windows HyperTerminal using TCP/IP may not work correctly on some platforms unless it has been configured to send line feeds with carriage returns.

To set this for telnet enter set crlf when in command mode. To set this for HyperTerminal click on the Settings tab in the Properties screen, click on ASCII Setup.. and ensure that Send line ends with line feeds is checked within the ASCII Sending section. You should not configure HyperTerminal in this way if you are using a console cable to make a direct connection to the Switch.

1 To start a Telnet session to the unit, click Start in Microsoft Windows

95/98/2000/NT.

a Click Run. b In the dialogue box that appears type the default IP address of the

unit, that is: Telnet 169.254.100.100

c Click OK.

2 Press Enter to open a login prompt.

If the login prompt does not begin immediately, press Return a few times until it starts.

3 At the login and password prompts, enter admin as your user name and

press Return at the password prompt. If you have logged on correctly, the

38 CHAPTER 3: SETTING UP FOR MANAGEMENT

top-level menu of the command line interface is displayed as shown in the example in Figure 10

Figure 10 Example top-level command line interface menu

Menu options: --------------3Com Superstack 3 Switch 4200--------------bridge - Administer bridge-wide parameters gettingStarted - Basic device configuration logout - Logout of the Command Line Interface physicalInterface - Administer physical interfaces protocol - Administer protocols security - Administer security system - Administer sytem-level functions trafficManagement - Administer traffic management

Type ? For help

-------------------------------(1)----------------------------------Select menu option:

4 At the Select menu option prompt you can either:

■ enter the protocol ip basicConfig command. At the Enter

configuration method prompt enter manual. The screen

prompts you to enter IP information.

Connecting to the

Console Port

■ enter the gettingStarted command. At the Enter

configuration method prompt enter manual. The screen

prompts you to enter IP information.

5 Enter the IP address, subnet mask, and gateway IP address for the Switch.

The screen displays a summary of the information entered.

The initial set up of your Switch is now complete and the Switch is ready for you to set up your chosen management method. See “Methods of

Managing a Switch” on page 45.

To set up your Switch manually you can alternatively make a connection to the console port (this example describes a local connection to the console port, rather than a remote one via a modem). You can do this whilst the Switch is offline, that is, before you connect the Switch to a network, or whilst the Switch is online, that is, connected to a network.

Manually Configuring IP Information 39

Pre-requisites

■ A workstation with terminal emulation software installed, such as

Microsoft Hyperterminal. This software allows you to communicate with the Switch via the console port directly, or through a modem.

■ Documentation supplied with the terminal emulation software.

■ A suitable cable:

■ A standard null modem cable — if you are connecting directly to

the console port, or

■ A standard modem cable — if you are connecting to the console

port using a modem.

You can find pin-out diagrams for both cables in Appendix B on page 67.

■ You need to have the following so that you can manually set up the

Switch with IP information:

■ IP address

■ subnet mask

■ default gateway

Connecting the Workstation to the Switch

1 Connect the workstation to the console port using a standard null

modem cable as shown in Figure 11

Figure 11 Connecting a workstation to the Switch via the console port

To connect the cable: a Attach the female connector on the cable to the male connector on

the console port of the Switch.

b Tighten the retaining screws on the cable to prevent it from being

loosened.

c Connect the other end of the cable to one of the serial ports (also

known as a COM port) on your workstation.

40 CHAPTER 3: SETTING UP FOR MANAGEMENT

2 Open your terminal emulation software and configure the COM port

settings to which you have connected the cable. The settings should be set to match the default settings for the Switch, which are:

■ 19,200 baud

■ 8 data bits

■ no parity

■ 1 stop bit

■ no hardware flow control

Refer to the documentation that accompanies the terminal emulation software for more information.

Setting Up the Switch with IP Information

You are now ready to manually set up the Switch with IP information using the command line interface.

1 The command line interface login sequence begins as soon as the Switch

detects a connection to its console port.

If the login prompt does not begin immediately, press Return a few times until it starts.

2 At the login and password prompts, enter admin as your user name and

press Return at the password prompt. If you have logged on correctly, the top-level menu of the command line interface is displayed as shown in the example in Figure 12

Manually Configuring IP Information 41

Figure 12 Example top-level command line interface menu

Type ? For help

-------------------------------(1)----------------------------------Select menu option:

3 At the Select menu option prompt you can either:

■ enter the protocol ip basicConfig command. At the Enter

configuration method prompt enter manual. The screen

prompts you to enter IP information.

■ enter the gettingStarted command. At the Enter

configuration method prompt enter manual. The screen

prompts you to enter IP information.

4 Enter the IP address, subnet mask, and gateway IP address for the Switch.

The screen displays a summary of the information entered.

The initial set up of your Switch is now complete and the Switch is ready for you to set up your chosen management method. See “Methods of

Managing a Switch” on page 45.

If you do not intend to use the command line interface via the console port to manage the Switch, you can disconnect the serial cable and close the terminal emulator software.

42 CHAPTER 3: SETTING UP FOR MANAGEMENT

Viewing Automatically Configured IP Information

Using 3Com Network

Supervisor

If you allow the Switch to automatically configure its own IP information you need to discover and view the IP information before you can begin to manage the Switch. You can discover the IP information in two ways:

■ Using 3Com Network Supervisor — This application will auto-discover

the Switch and display the automatically allocated IP information assigned to the Switch.

■ Connecting to the Console Port — Connect a workstation using a

console cable to the console port of the Switch. You can then view the IP information automatically assigned to the Switch using the command line interface (CLI).

You can use the 3Com Network Supervisor application provided on the CD-ROM that accompanies your Switch to discover the automatically allocated IP information.

1 Connect your Switch to the network. 2 Power-up the Switch and wait for two minutes. 3 Launch 3Com Network Supervisor and run the Auto-discovery wizard.

3Com Network Supervisor will auto-discover the new Switch and display the IP information that has been automatically allocated to the Switch.

Most DHCP and BootP servers allow static IP addresses to be configured so that you know what IP address the Switch will be given. Refer to the documentation that accompanies your DHCP or BootP server.

Connecting to the

Console Port

If your network does not have a DHCP or BootP server, the workstation running 3Com Network Supervisor must be on the same subnet as the Switch, because Auto-IP addresses are non-routable.

Alternatively, you can view the automatically configured IP information via the command line interface (CLI) through a connection to the console port. (This example describes a local connection to the console port, rather than a remote one via a modem.)

Pre-requisites

■ A workstation with terminal emulation software installed, such as

Microsoft Hyperterminal. This software allows you to communicate with the Switch via the console port directly, or through a modem.

■ Documentation supplied with the terminal emulation software.

Viewing Automatically Configured IP Information 43

■ A suitable cable:

■ A standard null modem cable — if you are connecting directly to

the console port, or

■ A standard modem cable — if you are connecting to the console

port using a modem.

You can find pin-out diagrams for both cables in Appendix B on page 67.

■ A Category 5 twisted pair Ethernet cable with RJ-45 connectors to

connect your Switch to the network.

Connecting the Workstation to the Switch

1 Connect the workstation to the console port using a standard null

modem cable as shown in Figure 13

Figure 13 Connecting a workstation to the Switch via the console port

To connect the cable: a Attach the female connector on the cable to the male connector on

the console port of the Switch.

b Tighten the retaining screws on the cable to prevent it from being

loosened.

c Connect the other end of the cable to one of the serial ports (also

known as a COM port) on your workstation.

2 Open your terminal emulation software and configure the COM port

settings to which you have connected the cable. The settings should be set to match the default settings for the Switch, which are:

■ 19,200 baud

■ 8 data bits

■ no parity

■ 1 stop bit

■ no hardware flow control

Refer to the documentation that accompanies the terminal emulation software for more information.

44 CHAPTER 3: SETTING UP FOR MANAGEMENT

Viewing IP Information via the Console Port

You are now ready to view the automatically allocated IP information using the command line interface.

1 Connect your Switch to the network using an Ethernet cable. As soon as

a network connection is made the Switch begins the automatic IP configuration process.

The automatic IP configuration process usually completes within one minute.

If there is no response from a DHCP server within 30 seconds, the Auto-IP configuration mechanism attempts to allocate the default IP address

169.254.100.100. If this address is not available, it then allocates an IP address in the range of 169.254.x.y (where x is in the range 1 to 254, and y is in the range 0 to 255).

2 The command line interface login sequence begins as soon as the Switch

detects a connection to its console port.

If the login prompt does not begin immediately, press Return a few times until it starts.

3 At the login and password prompts, enter admin as your user name and

press Return at the password prompt. If you have logged on correctly, the top-level menu of the command line interface is displayed as shown in the example in Figure 14

Figure 14 Example top-level command line interface menu

Type ? For help

-------------------------------(1)----------------------------------Select menu option:

4 At the Select menu option prompt enter the protocol ip

interface summary command. At the Select IP interfaces

Methods of Managing a Switch 45

prompt enter all. A summary of the automatically allocated IP information is displayed. Make a note of the Network IP Address.

The initial set up of your Switch is now complete and the Switch is ready for you to set up your chosen management method. See “Methods of

Managing a Switch” on page 45.

If you do not intend to use the command line interface via the console port to manage the Switch, you can disconnect the serial cable and close the terminal emulator software.

Methods of Managing a Switch

Command Line

Interface

Management

Once you have completed the initial set up of your Switch, you can decide how you wish to manage the Switch. You can use one of the following methods:

■ Command line interface management

■ Web interface management

■ SNMP management

Each Switch has a command line interface (CLI) that allows you to manage the Switch from a workstation, either locally via a console port connection (see Figure 15

), or remotely over the network (see Figure 16).

46 CHAPTER 3: SETTING UP FOR MANAGEMENT

Figure 15 CLI management via the console port

Figure 16 CLI management over the network

Refer to “Setting Up Command Line Interface Management” on

page 47

Web Interface

Management

Each Switch has an internal set of web pages that allow you to manage the Switch using a Web browser remotely over an IP network (see

Figure 17

Figure 17 Web interface management over the network

Refer to “Setting Up Web Interface Management” on page 48.

SNMP Management You can manage a Switch using any network management workstation

running the Simple Network Management Protocol (SNMP) as shown in

Figure 18

. For example, you can use the 3Com Network Supervisor

software that is provided on the CD-ROM that accompanies your Switch.

Setting Up Command Line Interface Management 47

Figure 18 SNMP management over the network

Refer to “Setting Up SNMP Management” on page 49.

Setting Up Command Line Interface Management

CLI Management via

the Console Port

CLI Management over

the Network

This section describes how you can set up command line interface management using a local console port connection or over the network.

To manage a Switch using the command line interface via the local console port connection:

1 Ensure you have connected your workstation to the console port correctly

as described in “Connecting to the Console Port”

on page 38.

2 Your Switch is now ready to continue being managed and/or configured

through the CLI via its console port.

To manage a Switch using the command line interface over a network using Telnet:

1 Ensure you have already set up the Switch with IP information as

described in “Setting Up Overview”

on page 32.

2 Check that you have the IP protocol correctly installed on your

management workstation. You can check this by trying to browse the World Wide Web. If you can browse, the IP protocol is installed.

3 Check you can communicate with the Switch by entering a ping

command at the DOS prompt in the following format:

c:\ ping xxx.xxx.xxx.xxx

(where xxx.xxx.xxx.xxx is the IP address of the Switch) If you get an error message, check that your IP information has been

entered correctly and the Switch is powered up.

48 CHAPTER 3: SETTING UP FOR MANAGEMENT

4 To open a Telnet session via the DOS prompt, enter the IP address of the

Switch that you wish to manage in the following format:

>telnet xxx.xxx.xxx.xxx

(where xxx.xxx.xxx.xxx is the IP address of the Switch)

If opening a Telnet session via third party software you will need to enter the IP address in the format suitable for that software.

5 At the login and password prompts, enter admin as your user name and

press Return at the password prompt (or the password of your choice if you have already modified the default passwords).

If the login prompt does not display immediately, press Return a few times until it starts.

6 If you have logged on correctly, the top-level menu of the command line

interface for the Switch you wish to manage is displayed as shown in

Figure 12

on page 41.

Setting Up Web Interface Management

Pre-requisites ■ Ensure you have already set up the Switch with IP information as

Netscape 4.76

Netscape 6.2

Internet Explorer

5.0, 5.5 and 6.0

This section describes how you can set up web interface management over the network.

described in “Setting Up Overview”

■ Ensure that the Switch is connected to the network using a Category

on page 32.

5 twisted pair Ethernet cable with RJ-45 connectors.

■ A suitable Web browser.

Choosing a Browser

To display the web interface correctly, use one of the following Web browser and platform combinations:

Table 8 Supported Web Browsers and Platforms

Windows 95 Windows 98

Windows NT 4Windows

2000

Windows XP

✓ ✓ ✓ ✓ ✓ ✓

✕ ✓ ✓ ✓ ✓ ✕

✓ ✓ ✓ ✓ ✓ ✕

Solaris

2.6

Setting Up SNMP Management 49

For the browser to operate the web interface correctly, JavaScript™ and Cascading Style Sheets must be enabled on your browser. These features are enabled on a browser by default. You will only need to enable them if you have changed your browser settings.

Web Management

Over the Network

Setting Up SNMP Management

To manage a Switch using the web interface over an IP network:

1 Check that you have the IP protocol correctly installed on your

management workstation. You can check this by trying to browse the World Wide Web. If you can browse, the IP protocol is installed.

2 Check you can communicate with the Switch by entering a ping

command at the DOS prompt in the following format:

c:\ ping xxx.xxx.xxx.xxx

(where xxx.xxx.xxx.xxx is the IP address of the Switch) If you get an error message, check that your IP information has been

entered correctly and the Switch is powered up.

3 Open your web browser and enter the IP address of the Switch that you

wish to manage in the URL locator, for example, in the following format:

http://xxx.xxx.xxx.xxx

4 At the login and password prompts, enter admin as your user name and

press Return at the password prompt (or the password of your choice if you have already modified the default passwords).

5 Click on the Device View button to display the web management options.

Any network management application running the Simple Network Management Protocol (SNMP) can manage a Switch if:

■ The correct Management Information Bases (MIBs) are installed on the

management workstation.

■ The management workstation is connected to the Switch using a port

in VLAN 1 (the Default VLAN). By default, all ports on the Switch are in VLAN 1.

You can use the 3Com Network Supervisor application that is provided on the CD-ROM that accompanies your Switch to provide SNMP management for your Switch. If you use 3Com Network Supervisor it automatically loads the correct MIBs and necessary files onto your workstation.

50 CHAPTER 3: SETTING UP FOR MANAGEMENT

Pre-requisites ■ Documentation supplied with the SNMP network management

application software.

To manage your Switch using an SNMP network management application, you need to specify SNMP community strings for the users defined on the Switch. You can do this using the command line interface system management snmp community command — refer to the command line interface section of the “SuperStack 3 Switch Management Interface Reference Guide” for more information.

Default Users and Passwords

If you intend to manage the Switch using the web interface or the command line interface, or to change the default passwords, you need to log in with a valid user name and password. The Switch has three default user names, and each user name has a different password and level of access. These default users are listed in Tab le 9

CAUTION: To protect your Switch from unauthorized access, you must change all three default passwords as soon as possible, even if you do not intend to actively manage your Switch

Table 9 Default Users

User Name

monitor monitor monitor — the user can view all manageable parameters,

manager manager manager — the user can access and change the

admin (no

Default Password

password)

Access Level

except special/security features, but cannot change any manageable parameters.

operational parameters but not special/security features security — the user can access and change all manageable

parameters

Use the admin default user name (no password) to login and carry out initial Switch setup.

Changing Default

Passwords

You can change the default passwords using either:

■ The gettingStarted command on the CLI, or

■ The security device user modify command on the CLI, or

Default Users and Passwords 51

■ The Security > Device > User > Modify operation on the web interface.

For more information about default users and passwords, refer to the “Superstack 3 Switch Management Interface Reference Guide” on the Switch CD-ROM.

52 CHAPTER 3: SETTING UP FOR MANAGEMENT

PROBLEM SOLVING

This chapter helps you to diagnose and solve problems you may have with the operation of your Switch. There is also an explanation of IP addressing.

The topics covered are:

■ Solving Problems Indicated by LEDs

■ Solving Hardware Problems

■ Solving Communication Problems

■ Solving Software Upgrade Problems

If you experience a problem that is not listed here, it may be included in the support section of the SuperStack 3 Switch Management Interface Reference Guide on the CD-ROM that accompanies your Switch.

For Technical Support information, see Appendix D.

54 CHAPTER 4: PROBLEM SOLVING

Solving Problems Indicated by LEDs

If the LEDs on the Switch indicate a problem, refer to the list of suggested solutions below.

The Power LED does not light

Check that the power cable is firmly connected to the Switch and to the supply outlet. If the connection is secure and there is still no power, you may have a faulty power cord or an internal fault. Firstly, check the power cord by:

■ testing it in another device

■ connecting a working power cord to the ‘problem’ device

then contact your supplier for advice.

On powering-up, the Power/Self Test LED lights yellow

The Switch unit has failed its Power On Self Test (POST) because of an internal problem. If a port has failed it’s POST, it’s LED will flash green/yellow alternately to indicate that the port is disabled. Contact your supplier for advice.

A link is connected and yet the Status LED for the port does not light

Check that:

■ The Switch and the device at the other end of the link (or cable) are

connected securely.

■ The devices at both ends of the link are powered-up

■ The quality of cable is satisfactory

■ Auto-negotiation settings are the same at both ends.

Auto-negotiation problems will occur with all ports where auto-negotiation is disabled and incorrect cables are being used (cross-over or straight).

Solving Hardware Problems 55

Solving Hardware Problems

Solving Communication Problems

SNMP fan fail trap hardware failure

In the rare event of your Switch unit experiencing an SNMP fan fail trap hardware failure, refer to the suggested solution below.

1 Power off the unit. 2 Check that the air vents are not obstructed. 3 Power cycle the unit. To do this, remove and reconnect all power supplies. 4 If a further fan fail trap is received, return the unit.

Error message indicating that the GBIC transceiver is invalid

The Switch has identified that the GBIC does not meet the minimum requirements for the Switch and has disabled the port. To correct this problem, completely remove the GBIC and replace it with a 3Com approved GBIC. See “Approved GBIC Transceivers”

on page 27.

Error message indicating that the GBIC transceiver is faulty

To correct this problem, completely remove the GBIC and then reinsert it. If the problem persists, contact 3Com Technical Support.

If you experience communication problems with the Switch, ensure that:

■ The Switch IP address has been configured as described in Chapter 3

■ If the Switch is separated from your management application by a

router, ensure that the default gateway IP address within the Switch is the same as the IP address of the router.

■ The Switch’s IP address has been entered correctly in your network

management application (such as 3Com Network Supervisor).

The following is a brief overview of IP addressing, and how to obtain a registered IP address.

IP Addressing

To be managed correctly, each device on your network (for example a Switch or Hub) must have a unique IP address. IP addresses have the format n.n.n.n where n is a decimal number between 0 and 255. An example IP address is 192.168.100.8.

56 CHAPTER 4: PROBLEM SOLVING

The IP address is split into two parts:

■ The first part (‘192.168.100’ in the example) identifies the network on

■ The second part (‘.8’ in the example) identifies the device within the

The natural subnet mask for this example is 255.255.255.0.

If your network has a connection to the external IP network, that is, you access the Internet, you must apply for a registered IP address.

How do you obtain a registered IP Address?

The IP registration system ensures that every IP address used is unique; if you do not have a registered IP address, you may be using an identical address to someone else and your network will not operate correctly.

InterNIC Registration Services is the organization responsible for supplying registered IP addresses. The following contact information is correct at time of publication:

which the device resides

network

Solving Stack Formation Problems

World Wide Web site: http://www.internic.net

If your IP network is internal to your organization only, that is, you do not access the Internet, you may use any arbitrary IP address as long as it is not being used by another device on your network. 3Com suggests you use addresses in the series 192.160.100.X (where X is a number between 1 and 254) with a subnet mask of 255.255.255.0.

These suggested IP addresses are part of a group of IP addresses that have been set aside specially for use ‘in house’ only.

If you are having problems with correctly forming a stack, first ensure that Spanning Tree is enabled. If it is enabled, do the following:

1 Power off all units in the stack. 2 Check all the cable connections in the stack. 3 Power on all units in the stack.

Solving Software Upgrade Problems 57

Solving Software Upgrade Problems

You can upgrade the management software of the Switch by using the System > Control > Software Upgrade operation in the Web Interface, or the system control softwareUpgrade command in the command line interface. For details on these options, refer to the Management Interface Reference Guide supplied in HTML format on the CD-ROM that accompanies your Switch.

If you have problems with your software upgrade, refer to the Problem Solving section in the Management Interface Reference Guide.

58 CHAPTER 4: PROBLEM SOLVING

SAFETY INFORMATION

You must read the following safety information before carrying out any installation or removal of components, or any maintenance procedures on the Switch 4200 Series.

WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit.

AVERTISSEMENT: Les avertissements présentent des consignes que vous devez respecter pour garantir votre sécurité personnelle. Vous devez respecter attentivement toutes les consignes. Nous vous demandons de lire attentivement les consignes suivantes de sécurité avant d’installer ou de retirer l’appareil.

VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen. Sie müssen die folgenden Sicherheitsinformationen’ sorgfältig durchlesen, bevor Sie das Gerät installieren oder ausbauen.

60 APPENDIX A: SAFETY INFORMATION

Important Safety Information

WARNING: Installation and removal of the unit must be carried out by qualified personnel only.

WARNING: If installing the Switch 4200 Series unit in a stack with SuperStack II or SuperStack 3 units that are narrower than the 4200 Series, the Switch 4200 Series unit must be installed below the narrower units.

WARNING: The unit must be earthed (grounded).

WARNING: Connect the unit to an earthed power supply to ensure

compliance with safety standards.

WARNING: Power Cord Set: This must be approved for the country where it is used:

U.S.A. and Canada

■ The cord set must be UL-approved and CSA certified.

■ The minimum specification for the flexible cord is:

No. 18 AWG Type SV or SJ 3-conductor

■ The cord set must have a rated current capacity of at least

10A.

■ The attachment plug must be an earth-grounding type

with a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A, 250V) configuration.

United Kingdom only

■ The supply plug must comply with BS1363 (3-pin 13 amp)

and be fitted with a 5A fuse which complies with BS1362.

■ The mains cord must be <HAR> or <BASEC> marked and

be of type H03VVF3GO.75 (minimum).

Europe only: ■ The supply plug must comply with CEE 7/7 (“SCHUKO”).

■ The mains cord must be <HAR> or <BASEC> marked and

be of type H03VVF3GO.75 (minimum).

Denmark ■ The supply plug must comply with section 107-2-D1,

standard DK2-1a or DK2-5a.

Switzerland ■ The supply plug must comply with SEV/ASE 1011.

WARNING: The appliance coupler (the connector to the unit and not the wall plug) must have a configuration for mating with an EN60320/IEC320 appliance inlet.

Important Safety Information 61

WARNING: The socket outlet must be near to the unit and easily accessible. You can only remove power from the unit by disconnecting the power cord from the outlet.

WARNING: This unit operates under SELV (Safety Extra Low Voltage) conditions according to IEC 950. The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions.

WARNING: France and Peru only:

†

This unit cannot be powered from IT

supplies. If your supplies are of IT type, this unit must be powered by 230V (2P+T) via an isolation transformer ratio 1:1, with the secondary connection point labelled Neutral, connected directly to earth (ground).

†

Impédance à la terre.

WARNING: U.K. only: If connecting a modem to the console port of the Switch 4200 Series, only use a modem which is suitable for connection to the telecommunications system.

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

62 APPENDIX A: SAFETY INFORMATION

WARNING: Fiber Optic ports - Optical Safety

Never look at the transmit laser while it is powered-up. Never look directly at the fiber ports and fiber cable ends when they are powered-up.

WARNING: Use of controls or adjustments of performance or procedures other than those specified herein may result in hazardous laser emissions.

L’information de Sécurité Importante

AVERTISSEMENT: L'installation et la dépose de ce groupe doivent être confiés à un personnel qualifié.

AVERTISSEMENT: Si vous entassez l'unité Switch avec les unités SuperStack 3 Hub, l'unité Switch 4200 doit être installée en dessous des unités Hub plus étroites.

AVERTISSEMENT: Vous devez mettre l’appareil à la terre (à la masse) ce groupe.

AVERTISSEMENT: Brancher l’unité à une source de courant mise à la terre pour assurer la conformité aux normes de sécurité.

L’information de Sécurité Importante 63

AVERTISSEMENT: Cordon électrique: Il doit être agréé ans le pays d'utilisation:

Etats-Unis et Canada

Danemark ■ La prise mâle d'alimentation doit respecter la section 107-2

Europe ■ La prise secteur doit être conforme aux normes CEE 7/7

Suisse ■ La prise mâle d'alimentation doit respecter la norme SEV/ASE

■ Le cordon doit avoir reçu l'homologation des UL et un

certificat de la CSA

■ Le cordon souple doit respecter, à titre minimum, les

spécifications suivantes :

■ calibre 18 AWG

■ type SV ou SJ

■ à 3 conducteurs

■ Le cordon doit être en mesure d'acheminer un courant

nominal d'au moins 10 A

■ La prise femelle de branchement doit être du type à mise à la

terre (mise à la masse) et respecter la configuration NEMA 5-15P (15 A, 125 V) ou NEMA 6-15P (15 A, 250 V)

D1 de la norme DK2 1a ou DK2 5a

(“SCHKO”)

■ LE cordon secteur doit porter la mention <HAR> ou

<BASEC> et doit être de type HO3VVF3GO.75 (minimum).

1011

AVERTISSEMENT: Le coupleur d'appareil (le connecteur du groupe et non pas la prise murale) doit respecter une configuration qui permet un branchement sur une entrée d'appareil EN60320/CEI 320.

AVERTISSEMENT: La prise secteur doit se trouver à proximité de l’appareil et son accès doit être facile. Vous ne pouvez mettre l’appareil hors circuit qu'en débranchant son cordon électrique au niveau de cette prise.

AVERTISSEMENT: L’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme CEI 950. Ces conditions ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions.

AVERTISSEMENT: France et Pérou uniquement: Ce groupe ne peut pas être alimenté par un dispositif à impédance à la terre. Si vos alimentations sont du type impédance à la terre, ce groupe doit être alimenté par une tension de 230 V (2 P+T) par le biais d'un transformateur d'isolement à rapport 1:1, avec un point secondaire de

64 APPENDIX A: SAFETY INFORMATION

connexion portant l'appellation Neutre et avec raccordement direct à la terre (masse).

AVERTISSEMENT: Points d’accès RJ-45. Ceux-ci sont protégés par des prises de données. Ils ne peuvent pas être utilisés comme prises de téléphone conventionnelles standard, ni pour la connection de l’unité à un réseau téléphonique central privé ou public. Raccorder seulement connecteurs de données RJ-45, systèmes de réseaux de téléphonie ou téléphones de réseaux à ces prises.

Il est possible de raccorder des câbles protégés ou non protégés avec des jacks protégés ou non protégés à ces prises de données.

AVERTISSEMENT: Ports pour fibres optiques – sécurité sur le plan optique

Ne regardez jamais le laser tant qu'il est sous tension. Ne regardez jamais directement le port à fibres optiques et les embouts de câbles à fibres optiques tant qu'ils sont sous tension.

AVERTISSEMENT: L'utilisation de contrôles, de réglages de performances ou de procédures autres que ceux qui sont spécifiés au sein du présent document risquent d'entraîner l'exposition à des rayonnements laser dangereux.

Wichtige Sicherheitsinformationen

VORSICHT: Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen.

VORSICHT: Wenn die Switch 4200 Einheit in einer Stapel mit anderen SuperStack 3 Hub Einheiten eingebaut werden soll, muß die Switch 4200 Einheit unter die schmaleren Hub Einheiten eingebaut werden.

VORSICHT: Das Gerät muß geerdet sein.

Wichtige Sicherheitsinformationen 65

VORSICHT: Das Gerät muß an eine geerdete Steckdose angeschlossen werden, die europäischen Sicherheitsnormen erfüllt.

VORSICHT: Der Anschlußkabelsatz muß mit den Bestimmungen des Landes übereinstimmen, in dem er verwendet werden soll.

VORSICHT: Der Gerätestecker (der Anschluß an das Gerät, nicht der Wandsteckdosenstecker) muß eine passende Konfiguration für einen Geräteeingang gemäß EN60320/IEC320 haben.

VORSICHT: Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich sein. Die Stromversorgung des Geräts kann nur durch Herausziehen des Gerätenetzkabels aus der Netzsteckdose unterbrochen werden.

VORSICHT: Europe

■ Das Netzkabel muß vom Typ HO3VVF3GO.75 (Mindestanforderung)

sein und die Aufschrift <HAR> oder <BASEC> tragen.

■ Der Netzstecker muß die Norm CEE 7/7 erfüllen (”SCHUKO”).

VORSICHT: Der Betrieb dieses Geräts erfolgt unter den SELV-Bedingungen (Sicherheitskleinstspannung) gemäß IEC 950. Diese Bedingungen sind nur gegeben, wenn auch die an das Gerät angeschlossenen Geräte unter SELV-Bedingungen betrieben werden.

VORSICHT: RJ-45-Porte. Diese Porte sind geschützte Datensteckdosen. Sie dürfen weder wie normale traditionelle Telefonsteckdosen noch für die Verbindung der Einheit mit einem traditionellem privatem oder öffentlichem Telefonnetzwerk gebraucht werden. Nur RJ-45-Datenanscluße, Telefonnetzsysteme or Netztelefone an diese Steckdosen anschließen.

Entweder geschützte oder ungeschützte Buchsen dürfen an diese Datensteckdosen angeschlossen werden.

66 APPENDIX A: SAFETY INFORMATION

VORSICHT: Faseroptikanschlüsse – Optische Sicherheit

Niemals ein Übertragungslaser betrachten, während dieses eingeschaltet ist. Niemals direkt auf die Faseransnchlüsse und auf die Faserkabelenden schauen, während diese eingeschaltet sind.

VORSICHT: Die Verwendung von Steuerelementen oder die Anpassung von Leistungen und Verfahren in anderer als der hierin genannten Weise kann zu gefährlichen Laseremissionen führen.

PIN-OUTS

Null Modem Cable 9-pin to RS-232 25-pin

Switch 4200 Cable connector: 9-pin female

Screen

TxD RxD Ground RTS CTS

DSR

DCD DTR

Shell 3 2 5 7 8

1 4

PC-AT Serial Cable 9-pin to 9-pin

Switch 4200 Cable connector: 9-pin female

Screen

DTR TxD RxD CTS Ground

DSR

RTS DCD

Shell 4 3 2 8 5

7 1

PC/Terminal Cable connector: 25-pin male/female

1 3 2 7 4 20

6 8

PC-AT Serial Port Cable connector: 9-pin female

Shell 1 2 3 4 5

7 8

Screen

RxD TxD Ground RTS DTR

CTS

DSR DCD

Screen

DCD RxD TxD DTR Ground

DSR

RTS CTS

only required if screen

always required

required for handshake

only required if screen

Required for handshake

always required

required for handshake

always required

required for handshake

68 APPENDIX B: PIN-OUTS

Modem Cable 9-pin to RS-232 25-pin

RJ-45 Pin Assignments

Switch 4200 Cable connector: 9-pin female

Screen

TxD RxD RTS CTS DSR

Ground

DCD DTR

Shell

3 2 7 8 6

1 4

RS-232 Modem Port Cable connector: 25-pin male

1 2 3 4 5

7 8

Screen

TxD RxD RTS CTS DSR

Ground

DCD DTR

Pin assignments are identical for 10BASE-TX and 100BASE-T RJ-45 connectors.

Table 10 Pin assignments

Pin Number Signal Function

Ports configured as MDI

1 Transmit Data + Bidirectional Data A+ 2 Transmit Data + Bidirectional Data A3 Receive Data + Bidirectional Data B+ 4 Not assigned Bidirectional Data C+ 5 Not assigned Bidirectional Data C6 Receive Data – Bidirectional Data B7 Not assigned Bidirectional Data D+ 8 Not assigned Bidirectional Data D-

1000BASE-T RJ-45 Pin Assignments 69

Table 11 Pin assignments

Pin Number Signal Function

Ports configured as MDIX

1 Receive Data + Bidirectional Data B+ 2 Receive Data - Bidirectional Data B3 Transmit Data + Bidirectional Data A+ 4 Not assigned Bidirectional Data A5 Not assigned Bidirectional Data D+ 6 Transmit Data Bidirectional Data D7 Not assigned Bidirectional Data C+ 8 Not assigned Bidirectional Data C-

1000BASE-T RJ-45 Pin Assignments

Table 12 and Table 13 show the pin assignments for the 1000BASE-T RJ-45 connectors.

Table 12 Pin assignments

Pin Number Signal Function

Ports configured as MDI

1 Transmit/Recieve A + Bidirectional Data A+ 2 Transmit/Recieve A - Bidirectional Data A3 Transmit/Recieve B + Bidirectional Data B+ 4 Transmit/Recieve C + Bidirectional Data C+ 5 Transmit/Recieve C - Bidirectional Data C6 Transmit/Recieve B – Bidirectional Data B7 Transmit/Recieve D + Bidirectional Data D+ 8 Transmit/Recieve D - Bidirectional Data D-

70 APPENDIX B: PIN-OUTS

Table 13 Pin assignments

Pin Number Signal Function

Ports configured as MDIX

1 Transmit/Recieve B + Bidirectional Data B+ 2 Transmit/Recieve B - Bidirectional Data B3 Transmit/Recieve A + Bidirectional Data A+ 4 Transmit/Recieve A - Bidirectional Data A5 Transmit/Recieve D + Bidirectional Data D+ 6 Transmit/Recieve D - Bidirectional Data D7 Transmit/Recieve C + Bidirectional Data C+ 8 Transmit/Recieve C - Bidirectional Data C-

TECHNICAL SPECIFICATIONS

Switch 4226T (3C17300)

Physical Dimensions Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)

Weight: 2.4 kg (5.3 lbs)

Environmental Requirements

Operating Temperature 0 ° to 40 °C (32 ° to 104 °F) Storage Temperature –40 ° to +70 °C (-40 ° to 158 °F) Operating Humidity 10–95% relative humidity, non-condensing Standards EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32.

Operational testing: paras 2.1, 2.2, 2.30 and 2.13).

Safety

Agency Certifications UL 60950, EN60950, CSA 22.2 No. 60950, IEC 60950

EMC

Emissions CISPRR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,

ICES-003 Class A, AS/NZS 3548 Class A, VCCI Class A, CNS 13438 Class A, EN61000-3-2, EN61000-3-3

Immunity EN 55024

Heat Dissipation 40 watts maximum (136 Btu/h maximum) Power Supply

AC Line Frequency 50/60 Hz Input Voltage 90–240 VAC Current Rating 2.3 A (amps)(maximum)

(continued)

72 APPENDIX C: TECHNICAL SPECIFICATIONS

Standards Supported SNMP

SNMP protocol (RFC 1157) MIB-II (RFC 1213) Bridge MIB (RFC 1493) RMON MIB II (RFC 2021) Remote Monitoring MIB (RFC

1757) MAU MIB (RFC 2239)

Terminal Emulation

Telnet (RFC 854)

Protocols Used for Administration

UDP (RFC 768) IP (RFC 791) ICMP (RFC 792) TCP (RFC 793) ARP (RFC 826) TFTP (RFC 783) DHCP (RFC 2131, RFC 2132, RFC 1534) BOOTP (RFC 951, RFC 1497)

Switch 4250T (3C17302) 73

Switch 4250T (3C17302)

Physical Dimensions Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)

Weight: 2.83 kg (6.23 lbs)

Environmental Requirements

Operational testing: paras 2.1, 2.2, 2.30 and 2.13).

Safety

Agency Certifications UL60950, EN60950, CSA 22.2 No. 60950, IEC 60950

EMC

Emissions CISPR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,

ICES-003 Class A, AS/NZS 3548 Class A, VCCI Class A, CNS 13438 Class A, EN61000-3-2, EN61000-3-3

Immunity EN 55024

Heat Dissipation 60 watts maximum (205 Btu/h maximum) Power Supply

AC Line Frequency 50/60 Hz Input Voltage 90–240 VAC Current Rating 2.3 A (amps)(maximum) Standards Supported SNMP

SNMP protocol (RFC 1157) MIB-II (RFC 1213) Bridge MIB (RFC 1493) RMON MIB II (RFC 2021) Remote Monitoring MIB (RFC

1757) MAU MIB (RFC 2239)

Terminal Emulation

Telnet (RFC 854)

Protocols Used for Administration

UDP (RFC 768) IP (RFC 791) ICMP (RFC 792) TCP (RFC 793) ARP (RFC 826) TFTP (RFC 783) DHCP (RFC 2131, RFC 2132, RFC 1534) BOOTP (RFC 951, RFC 1497)

74 APPENDIX C: TECHNICAL SPECIFICATIONS

Switch 4228G (3C17304)

Physical Dimensions Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)

Weight: 2.73 kg (6.00 lbs)

Environmental Requirements

Operational testing: paras 2.1, 2.2, 2.30 and 2.13).

Safety

Agency Certifications UL60950, EN60950, CSA 22.2 No. 60950, IEC 60950

EMC

Emissions CISPR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,

ICES-003 Class A, AS/NZS 3548 Class A, VCCI Class A, CNS 13438 Class A, EN61000-3-2, EN61000-3-3

Immunity EN 55024

Heat Dissipation 60 watts maximum (205 Btu/h maximum) Power Supply

AC Line Frequency 50/60 Hz Input Voltage 90–240 VAC Current Rating 2.3 A (amps)(maximum) Standards Supported SNMP

SNMP protocol (RFC 1157) MIB-II (RFC 1213) Bridge MIB (RFC 1493) RMON MIB II (RFC 2021) Remote Monitoring MIB (RFC

1757) MAU MIB (RFC 2239)

Terminal Emulation

Telnet (RFC 854)

Protocols Used for Administration

UDP (RFC 768) IP (RFC 791) ICMP (RFC 792) TCP (RFC 793) ARP (RFC 826) TFTP (RFC 783) DHCP (RFC 2131, RFC 2132, RFC 1534) BOOTP (RFC 951, RFC 1497)

TECHNICAL SUPPORT

3Com provides easy access to technical support information through a variety of services. This appendix describes these services.

You can purchase additional services from your network supplier or from 3Com. These services can enhance warranty response times. They can also provide supplementary services not included in your product warranty. These services include telephone support 24 hours a day, 7 days a week, advance shipment of replacement hardware, and on-site support.

Information contained in this appendix is correct at time of publication. For the most recent information, 3Com recommends that you access the 3Com Corporation World Wide Web site.

Online Technical Services

World Wide Web Site To access the latest networking information on the 3Com Corporation

3Com offers worldwide product support 24 hours a day, 7 days a week, through the following online systems:

■ World Wide Web site

■ 3Com Knowledgebase Web Services

■ 3Com FTP site

World Wide Web site, enter this URL into your Internet browser:

http://www.3com.com/

This service provides access to online support information such as technical documentation and software, as well as support options that range from technical education to maintenance and professional services.

76 APPENDIX D: TECHNICAL SUPPORT

3Com

Knowledgebase Web

Services

3Com FTP Site Download content across the Internet from the 3Com public FTP site. This

The 3Com Knowledgebase is a database of technical information to help you install, upgrade, configure, or support 3Com products. The Knowledgebase is updated daily with technical information discovered by 3Com technical support engineers. This complimentary service, which is available 24 hours a day, 7 days a week to 3Com customers and partners, is located on the 3Com Corporation World Wide Web site at:

http://knowledgebase.3com.com

service is available 24 hours a day, 7 days a week.

To connect to the 3Com FTP site, enter the following information into your FTP client:

■ Hostname: ftp.3com.com

■ Username: anonymous

■ Password: <your Internet e-mail address>

You do not need a user name and password with Web browser software such as Netscape Navigator and Microsoft Internet Explorer.

Support from Your Network Supplier

If you require additional assistance, ask your network supplier about the professional services available in your area for the assessment, installation, and implementation of your network. You can also purchase maintenance contracts for most products.

When you contact your network supplier for assistance, have the following information ready:

■ Product model name, part number, and serial number

■ A list of system hardware and software, including revision levels

■ Diagnostic error messages

■ Details about recent configuration changes, if applicable

If you are unable to contact your network supplier, see the following section on how to contact 3Com.

Support from 3Com 77

Support from 3Com If you are unable to obtain assistance from the 3Com online technical

resources discussed earlier in this appendix, or from your network supplier, 3Com offers a range of support services. Purchase of a support contract gives you priority response and is typically more cost effective than purchasing service for a specific incident. To find out more about your support options, e-mail or call the 3Com technical support services at the location nearest you.

Internet Support Some 3Com regions offer an Internet support service. To access this

service for your region, use the appropriate URL or e-mail address from the list below.

Asia, Pacific Rim

From this region, e-mail:

apr_technical_support@3com.com

Europe, Middle East and Africa

From this region, enter the URL:

http://emea.3com.com/support/email.html

Latin America

Spanish speakers, enter the URL:

http://lat.3com.com/lat/support/form.html

Portuguese speakers, enter the URL:

http://lat.3com.com/br/support/form.html

English speakers, e-mail:

lat_support_anc@3com.com

Telephone Support When you contact 3Com for assistance, have the following information

ready:

■ Product model name, part number, and serial number

■ A list of system hardware and software, including revision levels

■ Diagnostic error messages

■ Details about recent configuration changes, if applicable

78 APPENDIX D: TECHNICAL SUPPORT

Here is a list of worldwide technical telephone support numbers. These numbers are correct at the time of publication. Refer to the 3Com Web site for updated information.

Country Telephone Number Country Telephone Number

Asia, Pacific Rim

Australia Hong Kong India

Indonesia Japan

Malaysia New Zealand Pakistan

Europe, Middle East, and Africa

From anywhere in these regions, call:

From the following countries, you may use the numbers shown: Austria

Belgium (Flemish) Belgium (French) Denmark Finland France Germany Hungary Ireland Israel Italy

Latin America

Antigua Argentina Aruba Bahamas Barbados Belize Bermuda Bonaire Brazil Cayman Chile Colombia Costa Rica Curacao Ecuador Dominican Republic

North America 1 800 876 3266

1 800 678 515 800 933 486 +61 2 9424 5179 or 000800 650 1111 001 803 61009 00531 616 439 or 03 5977 7991 1800 801 777 0800 446 398 +61 2 9937 5083

+44 (0)1442 435529

01 7956 7124 070 700 000 070 700 770 7010 7289 01080 2783 0825 809 622 01805 404 747 06800 14466 1800 509359 1800 943 2632 199 161346

1 800 988 2112 0 810 444 3COM 1 800 998 2112 1 800 998 2112 1 800 998 2112 52 5 201 0010 1 800 998 2112 1 800 998 2112 0800 13 3COM 1 800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 1 800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112

Philippines

P.R. of China

Singapore S. Korea

Taiwan Thailand

Luxembourg Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U.K.

Guatemala Haiti Honduras Jamiaca Martinique Mexico Nicaragua Panama Paraguay Peru Puerto Rico Salvador Trinidad and Tobago Uruguay Venezuela Virgin Islands

1235 61 266 2602 or +61 2 9937 5076 10800 61 00137 or 021 6350 1590 or 00800 0638 3266 800 6161 463 00798 611 2230 or 02 3455 6455 00801 611 261 001 800 611 2000

800 29880 0900 777 7737 815 33 047 00800 441 1357 707 200 123 0800 991196 9 021 60455 07711 14453 08488 50112 0870 241 3901

AT&T +800 998 2112 57 1 657 0888 AT&T +800 998 2112 1 800 998 2112 571 657 0888 01 800 849CARE AT&T +800 998 2112 AT&T +800 998 2112 54 11 4894 1888 AT&T +800 998 2112 1 800 998 2112 AT&T +800 998 2112 1 800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 57 1 657 0888

Returning Products for Repair 79

Returning Products for Repair

Before you send a product directly to 3Com for repair, you must first obtain an authorization number. Products sent to 3Com without authorization numbers will be returned to the sender unopened, at the sender’s expense.

You can obtain a Return Materials Authorization number (RMA) by entering the following URL into your Internet browser:

http://www.3com.com/support/en_US/repair

Alternatively, you can obtain an RMA by calling or faxing one of the following numbers:

Country Telephone Number Country Telephone Number Asia, Pacific Rim

From anywhere in this region, call:

Europe, Middle East and Africa

From anywhere in these regions, call:

From the following countries, you may use the numbers shown: Austria

Belgium (Flemish) Belgium (French) Denmark Finland France Germany Hungary Ireland Israel Italy

+ 65 543 6500 phone + 65 543 6348 fax

+44 (0)1442 435529

01 7956 7124 070 700 000 070 700 770 7010 7289 01080 2783 0825 809 622 01805 404 747 06800 14466 1800 509359 1800 943 2632 199 161346

Luxembourg Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U.K.

800 29880 0900 777 7737 815 33 047 00800 441 1357 707 200 123 0800 991196 9 021 60455 07711 14453 08488 50112 0870 241 3901

80 APPENDIX D: TECHNICAL SUPPORT

Country Telephone Number Country Telephone Number Latin America

Antigua Argentina Aruba Bahamas Barbados Belize Bermuda Bonaire Brazil Cayman Chile Colombia Costa Rica Curacao Ecuador Dominican Republic

North America

From USA and Canada, call:

1 800 876 3266 phone 1 508 323 6061 fax (not toll free)

Guatemala Haiti Honduras Jamiaca Martinique Mexico Nicaragua Panama Paraguay Peru Puerto Rico Salvador Trinidad and Tobago Uruguay Venezuela Virgin Islands

INDEX 81

INDEX

Numbers

10/100/1000BASE-T ports 14 3C number 22 3Com Knowledgebase Web Services 76 3Com URL 75

access levels of default users 50 automatic setup 42

3Com Network Supervisor 42 console port 42

browsers

choosing 48

cable

choosing the correct 25 fiber 26 maximum length 14

pin-outs 67 CD-ROM 10 command line interface

management 45 console port 17 conventions

notice icons, About This Guide 8

text, About This Guide 8 cross-over configuration 25

default

settings 18

users 50

factory defaults 18

GBIC

ports 14 transceivers 27

GBIC ports 14

hardware features 12

installing the Switch 19

prerequisites 20

IP addressing

registered 56

IP configuration 33

LEDs 15 logging in as a default user 50

MAC address of the Switch 22 management

methods 45 preparing for 34 setting up 31, 32

manual setup

console port 38

front panel port 35 MDI configuration 25 MDIX configuration 25

network supplier support 76

online technical services 75

Ethernet address of the Switch 22

passwords

of default users 50

82 INDEX

pin assignments

modem cable 68 null modem cable 67 RJ45 68 RJ45 1000BASE-T 69

serial cable 67 pin-outs 67 ports

10/100/1000BASE-T ports 14

console 17

GBIC ports 14 power socket 17 powering-up a Switch 4200 24 problem solving 53

communication problems 55

hardware problems 55

IP addressing 55

LEDs 54

Solving software upgrade problems 57

stack formation problems 56 product name 22

rack mounting a Switch 4200 21 Redundant Power System. See RPS returning products for repair 79 RPS 17

connecting 25

socket 17

console port 17 dimensions 71 Ethernet address 22 features 12 installation 19, 20 MAC address 22 power socket 17 powering-up 24 product name 22 rack mounting 21 RPS socket 17 serial number 22 size 71 stacking 23 unit information label 22 weight 71

system specifications 71

technical support

3Com Knowledgebase Web Services 76 3Com URL 75 network suppliers 76 product repair 79

troubleshooting 53

unit information label 22 URL 75

safety information

English 60

French 62

German 64 serial number of the Switch 22 serial port. See console port Simple Network Management Protocol. See SNMP SNMP 49 SNMP management 46

setting up 49 socket

power 17

RPS 17 specifications, system 71 Stacking units 23 straight-through configuration 25 Switch

automatic setup 42 Switch 4200

3C number 22

Web browsers

choosing 48

web interface

choosing a browser 48

web interface management 46

setting up 48

World Wide Web (WWW) 75, 76

REGULATORY NOTICES

FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to

part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference to radio communications, in which case the user will be required to correct the interference at their own expense.

INFORMATION TO THE USER If this equipment does cause interference to radio or television reception, which can be determined by

turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

■ Reorient the receiving antenna.

■ Relocate the equipment with respect to the receiver.

■ Move the equipment away from the receiver.

■ Plug the equipment into a different outlet so that equipment and receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the Federal Communications Commission helpful:

How to Identify and Resolve Radio-TV Interference Problems

This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.

In order to meet FCC emissions limits, this equipment must be used only with cables which comply with IEEE

802.3.

CSA STATEMENT This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment

CE STATEMENT (EUROPE) This product complies with the European Low Voltage Directive 73/23/EEC and EMC Directive 89/336/EEC as

Regulations. Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur

du Canada.

amended by European Directive 93/68/EEC. Warning: This is a class A product. In a domestic environment this product may cause radio interference in

which case the user may be required to take adequate measures.

VCCI STATEMENT

BSMI STATEMENT

3COM C17302, C17304, 3C17300 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

ABOUT THIS GUIDE

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

Related Documentation

Product Registration

Documentation Comments

About the Switch 4200 Series

Switch 4200 Series — Front View Detail

100BASE-TX Ports

Ports

GBIC Ports This section applies to the SuperStack 3 Switch 4228G only.

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

Switch 4200 Series — Rear View Detail

Power Socket

Redundant Power System Socket

Console Port

Table 5 Default Settings

INSTALLING THE SWITCH

Package Contents ■ Switch unit

Choosing a Suitable Site

Rack-mounting 21

Placing Units On Top of Each Other

Stacking Units Up to four Switch 4200 Series units can be stacked together and then

The Power-up Sequence

GBIC Operation 27

SETTING UP FOR MANAGEMENT

Setting Up Overview

IP Configuration You can use one of the following methods to allocate IP information to

Manually Configuring IP Information

Viewing Automatically Configured IP Information

Methods of Managing a Switch

■ Command line interface management

SNMP Management You can manage a Switch using any network management workstation

Setting Up Command Line Interface Management

Setting Up Web Interface Management

Pre-requisites ■ Ensure you have already set up the Switch with IP information as

Setting Up SNMP Management

Pre-requisites ■ Documentation supplied with the SNMP network management

Default Users and Passwords

PROBLEM SOLVING

Solving Problems Indicated by LEDs

Solving Hardware Problems

Solving Communication Problems

Solving Stack Formation Problems

Solving Software Upgrade Problems

SAFETY INFORMATION

Important Safety Information

L’information de Sécurité Importante

Wichtige Sicherheitsinformationen

PIN-OUTS

Null Modem Cable 9-pin to RS-232 25-pin

PC-AT Serial Cable 9-pin to 9-pin

Modem Cable 9-pin to RS-232 25-pin

RJ-45 Pin Assignments

1000BASE-T RJ-45 Pin Assignments

TECHNICAL SPECIFICATIONS

Switch 4226T (3C17300)

Switch 4250T (3C17302)

Switch 4228G (3C17304)

TECHNICAL SUPPORT

Online Technical Services

■ World Wide Web site

3Com FTP Site Download content across the Internet from the 3Com public FTP site. This

Support from Your Network Supplier

Support from 3Com 77

Internet Support Some 3Com regions offer an Internet support service. To access this

Telephone Support When you contact 3Com for assistance, have the following information

INDEX

REGULATORY NOTICES