3com 3CR17501-91 - SuperStack 3 Switch 3250 User manual

http://www.3com.com/

Part No. DUA1750-0AAA01

Published December 2003

SuperStack

®

3

Switch 3226 and Switch 3250

Getting Started Guide

3CR17500-91

3CR17501-91

DUA1750-0AAA01.book Page 1 Friday, December 5, 2003 10:24 AM

3Com Corporation

350 Campus Drive

Marlborough, MA

USA 01752-3064

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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.

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be registered in other countries.

3Com, SuperStack, and the 3Com logo are registered trademarks of 3Com Corporation.

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It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we

are committed to:

Establishing environmental performance standards that comply with national legislation and regulations.

Conserving energy, materials and natural resources in all operations.

Reducing the waste generated by all operations. Ensuring that all waste conforms to recognized environmental

standards. Maximizing the recyclable and reusable content of all products.

Ensuring that all products can be recycled, reused and disposed of safely.

Ensuring that all products are labelled according to recognized environmental standards.

Improving our environmental record on a continual basis.

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3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.

Regulated Materials Statement

3Com products do not contain any hazardous or ozone-depleting material.

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This product contains encryption and may require U.S. and/or local government authorization prior to export

or import to another country.

DUA1750-0AAA01.book Page 2 Friday, December 5, 2003 10:24 AM

CONTENTS

ABOUT THIS GUIDE

Before You Start 7

About Your CD-ROM 7

Conventions 8

Related Documentation 9

Accessing Online Documentation 9

Documentation Comments 10

1 INTRODUCING THE SUPERSTACK 3 SWITCH 3226 AND

S

WITCH 3250

About the Switch 12

Summary of Hardware Features 12

Switch — Front View Detail 13

10BASE-T/ 100BASE-TX Ports 13

10BASE-T/ 100BASE-TX/

1000BASE-T Ports 14

SFP Ports 14

LEDs 14

Console Port

(Switch 3226) 15

Switch — Rear View Detail 16

Power Socket 16

Redundant Power System Socket 16

Console Port

(Switch 3250) 16

Default Settings 17

2 INSTALLING THE SWITCH

Package Contents 20

Choosing a Suitable Site 20

DUA1750-0AAA01.book Page 3 Friday, December 5, 2003 10:24 AM

Rack-mounting 21

Placing Units On Top of Each Other 23

The Power-up Sequence 23

Powering-up the Switch 23

Checking for Correct Operation of LEDs 23

Connecting a Redundant Power System 24

Choosing the Correct Cables 24

SFP Operation 25

Approved SFP Transceivers 25

Inserting an SFP Transceiver 25

Removing an SFP Transceiver 27

3 SETTING UP FOR MANAGEMENT

Setting Up Overview 30

IP Configuration 31

Preparing for Management 32

Manually Configuring IP Information 33

Connecting to the Console Port 33

Viewing Automatically Configured IP Information 36

Using 3Com Network Supervisor 36

Connecting to the Console Port 36

Methods of Managing a Switch 39

Command Line Interface Management 39

Web Interface Management 39

SNMP Management 40

Setting Up Command Line Interface Management 40

CLI Management via the Console Port 40

CLI Management over the Network 41

Setting Up Web Interface Management 42

Pre-requisites 42

Web Management Over the Network 42

Setting Up SNMP Management 43

Pre-requisites 43

Default Users and Passwords 43

Changing Default Passwords 44

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4 PROBLEM SOLVING

Solving Problems Indicated by LEDs 46

Solving Hardware Problems 47

Solving Communication Problems 48

Solving Software Upgrade Problems 49

A SAFETY INFORMATION

Power Cord Set — Japan 51

Important Safety Information 52

L’information de Sécurité Importante 54

Wichtige Sicherheitsinformationen 56

B PIN-OUTS

Null Modem Cable 59

PC-AT Serial Cable 59

RJ-45 Pin Assignments 60

C TECHNICAL SPECIFICATIONS

SuperStack 3 Switch 3226 and Switch 3250 61

D OBTAINING SUPPORT FOR YOUR PRODUCT

Register Your Product to Gain Service Benefits 63

Purchase Value-Added Services 63

Troubleshoot Online 63

Access Software Downloads 64

Contact Us 64

Telephone Technical Support and Repair 64

INDEX

REGULATORY NOTICES

DUA1750-0AAA01.book Page 5 Friday, December 5, 2003 10:24 AM

DUA1750-0AAA01.book Page 6 Friday, December 5, 2003 10:24 AM

ABOUT THIS GUIDE

This guide provides all the information you need to install and use the

following switches in their default state.

■ SuperStack

®

3 Switch 3226 (3CR17500-91)

■ SuperStack

®

3 Switch 3250 (3CR17501-91)

All procedures described in this guide apply to both models except where

stated. Where a procedure or description applies to both the Switch 3226

and the Switch 3250, the term Switch is used.

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).

Before You Start This section contains information about the CD-ROM that accompanies

your Switch.

About Your CD-ROM The CD-ROM also contains the following:

■ Online documentation for the Switch — refer to Related

Documentation on page 9 for details.

■ 3Com Network Supervisor — a powerful and easy-to-use network

management platform.

■ A number of other useful applications.

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/

DUA1750-0AAA01.book Page 7 Friday, December 5, 2003 10:24 AM

8 ABOUT THIS GUIDE

Conventions Table 1 and Table 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

potential damage to an application, system, or device

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

screen.

<syntax> The word “syntax” means that you must evaluate the syntax

provided and then supply the appropriate values for the

placeholders that appear in angle brackets. Example:

To change your password, use the following syntax:

system password <password>

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

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

command exactly as shown and then press Return or Enter.

Commands appear in bold. Example:

To display port information, enter the following command:

bridge port detail

The words “enter”

and “type”

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.”

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

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

Press Ctrl+Alt+Del

Words in italics Italics are used to:

■ 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.

DUA1750-0AAA01.book Page 8 Friday, December 5, 2003 10:24 AM

Related Documentation 9

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

following:

■ SuperStack 3 Switch Implementation Guide

This guide contains information on the features supported by your

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

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

■ SuperStack 3 Switch Management Quick Reference Guide

This guide contains:

■ a list of the features supported by the Switch.

■ a summary of the Web interface and command line interface

commands for the Switch.

■ SuperStack 3 Switch Management Interface Reference Guide

This guide provides detailed information about the Web interface and

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

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

Switch.

■ Release Notes

These notes provide information about the current software release,

including new features, modifications, and known problems.

There are other publications you may find useful, such as:

■ Documentation accompanying 3Com Network Supervisor. This is

supplied on the CD-ROM that accompanies the Switch.

Accessing Online

Documentation

To access the documentation on the CD-ROM supplied with your Switch,

do the following:

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

enabled, a splash screen will be displayed automatically.

2 Select the Documentation section from the contents page.

If the online documentation is to be accessed from a local drive or server,

you will need to access the CD-ROM contents via the root directory and

copy the files from the CD-ROM to a suitable directory.

DUA1750-0AAA01.book Page 9 Friday, December 5, 2003 10:24 AM

10 ABOUT THIS GUIDE

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

directory on the CD-ROM. The documentation is accessed using the

contents.htm file.

■ The PDF Implementation Guide is stored in the

Docs/implementation directory of the CD-ROM.

3Com recommends that you copy the Docs/reference directory as a

whole to maintain the structure of the files.

Documentation

Comments

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:

[email protected]

Please include the following information when commenting:

■ Document title

■ Document part number (on the title page)

■ Page number (if appropriate)

Example:

■ Superstack

®

3 Switch 3226 and Switch 3250 Getting Started Guide

■ Part Number DUA1750-0AAA01

■ Page 21

Please note that we can only respond to comments and questions about

3Com product documentation at this e-mail address. Questions related to

technical support or sales should be directed in the first instance to your

network supplier.

DUA1750-0AAA01.book Page 10 Friday, December 5, 2003 10:24 AM

1

INTRODUCING THE SUPERSTACK 3

SWITCH 3226 AND SWITCH 3250

This chapter contains introductory information about the Switch 3226

and Switch 3250 and how they can be used in your network. It covers

summaries of hardware and software features and also the following

topics:

■ About the Switch

■ Switch — Front View Detail

■ Switch — Rear View Detail

■ Default Settings

DUA1750-0AAA01.book Page 11 Friday, December 5, 2003 10:24 AM

12 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 3226 AND SWITCH 3250

About the Switch The Switch is a 10/100 Mbps Ethernet Switch, which consists of either:

■ 24 10BASE-T/100BASE-TX ports or

■ 48 10BASE-T/100BASE-TX ports

and:

■ Two 10BASE-T/100BASE-TX/1000BASE-T (10/100/1000) ports

■ Two SFP ports

The two 10/100/1000 ports are combination ports. When an SFP module

is inserted it has priority over the 10/100/1000 port of the same number

(25-26 on the Switch 3226, 49-50 on the Switch 3250). The

corresponding 10/100/1000 port is disabled when an SFP module is

present.

Summary of

Hardware Features

Table 3 summarizes the hardware features that are supported by the

Switch.

Table 3 Hardware features

Feature Switch

MAC Addresses ■ Up to 8000 supported

■ Up to 200 static entries

Auto-negotiation Supported on all ports

Auto MDI/MDI-X Supported on all ports

Forwarding Modes Store and Forward

Duplex Modes Half and full duplex on all ports

Traffic Prioritization Supported (using the IEEE Std 802.ID, 1998 Edition):

4 queues per port

Ethernet/Fast Ethernet

Ports

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

Ethernet/Fast Ethernet/

Gigabit Ethernet Ports

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

1000BASE-T ports

RPS Support Connects to SuperStack 3 Advanced Redundant

Power System (ARPS) (3C16071B) with Type 3

Module (3C16075)

SFP Ports 2 auto-negotiating SFP ports

Mounting 19-inch rack or stand-alone mounting

DUA1750-0AAA01.book Page 12 Friday, December 5, 2003 10:24 AM

Switch — Front View Detail 13

Switch — Front

View Detail

Figure 1 Switch 3226 — front view

Figure 2 Switch 3250 — front view

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

The Switch has 24 or 48 auto-negotiating 10BASE-T/100BASE-TX ports

configured as Auto MDI/MDI-X. These ports automatically provide the

appropriate connection. The default state for 10/100 Mbps ports is

auto-negotiation enabled, where the speed, duplex and flow control

modes are negotiated.

Alternatively, you can manually set these ports to 10BASE-T half duplex,

10BASE-T full duplex, 100BASE-TX half duplex, 100BASE-TX full duplex

DUA1750-0AAA01.book Page 13 Friday, December 5, 2003 10:24 AM

14 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 3226 AND SWITCH 3250

and manually enable or disable flow control. The maximum segment

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

If you disable auto-negotiation, Auto MDI/MDI-X will also be disabled.

10BASE-T/

100BASE-TX/

1000BASE-T Ports

The Switch has two auto-negotiating 10BASE-T/100BASE-TX/100BASE-T

ports configured as Auto MDI/MDI-X. These ports automatically provide

the appropriate connection. The default state for 10/100/1000 Mbps

ports is auto-negotiation enabled, where the speed, duplex and flow

control modes are negotiated.

Alternatively, you can manually set these ports to 10BASE-T half duplex,

10BASE-T full duplex, 100BASE-TX half duplex, 100BASE-TX full duplex

or 1000BASE-T full duplex and manually enable or disable flow control.

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

pair cable.

If you disable auto-negotiation, Auto MDI/MDI-X will also be disabled.

When an SFP module is inserted it has priority over the 10/100/1000 port

of the same number (25-26 on the Switch 3226, 49-50 on the

Switch 3250). The corresponding 10/100/1000 port is disabled when an

SFP module is present.

SFP Ports The two SFP (Small Form Factor Pluggable) ports support fiber Gigabit

Ethernet short-wave (SX) and long-wave (LX) SFP Transceivers in any

combination. This offers you the flexibility of using SFP transceivers to

provide connectivity between the Switch and a 1000 Mbps core network

or to create a high capacity aggregated link between two workgroups.

The only state for these ports is auto-negotiation enabled. As the speed

and duplex modes are fixed by the media type, only the flow control is

negotiated with the link partner.

When an SFP module is inserted it has priority over the 10/100/1000 port

of the same number (25-26 on the Switch 3226, 49-50 on the

Switch 3250). The corresponding 10/100/1000 port is disabled when an

SFP module is present.

LEDs Table 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 46.

DUA1750-0AAA01.book Page 14 Friday, December 5, 2003 10:24 AM

Switch — Front View Detail 15

Table 4 LED behavior

Console Port

(Switch 3226)

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

local out-of-band management. The console port uses a standard null

modem cable and is set to auto-baud, 8 data bits, no parity and 1 stop

bit.

LED Color Indicates

Port Status LEDs

Green A 100 Mbps link is present.

Yellow A 10 Mbps link is present.

Green flashing There is 100 Mbps activity on the port.

Yellow flashing There is 10 Mbps activity on the port.

Yellow to

Green flashing

A link is present, but the port is disabled or the port has

failed its loopback test.

Off No link is present.

Module Active LEDs

Green The SFP Module is present and has a link. The corresponding

10/100/1000 Mbps port is disabled.

Off No SFP Module has been inserted. The corresponding

10/100/1000 port can be used.

Combo Port Status LEDs

Green A 1000 Mbps link is present.

Yellow A 10/100 Mbps link is present.

Green Flashing There is 1000 Mbps activity on the port.

Yellow Flashing There is 10/100 Mbps activity on the port.

Yellow to

Green flashing

A link is present, but the port is disabled or the port has

failed its loopback test.

Off No link is present.

Power / Self Test LED

Green The Switch is powered-up and operating normally.

Green flashing The Switch is starting up or the Switch software is being

upgraded.

Yellow The Switch is reporting a fault. (see Chapter 4, “Problem

Solving”)

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

Power Supply Unit.

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16 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 3226 AND SWITCH 3250

Switch — Rear

View Detail

Figure 3 Switch 3226 — rear view

Figure 4 Switch 3250 — rear view

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

in the range 100-240 VAC.

Redundant Power

System Socket

To protect against internal power supply failure, you can use this socket

to connect the Switch to a SuperStack 3 Advanced Redundant Power

System. See “Connecting a Redundant Power System” on page 24.

Console Port

(Switch 3250)

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

local out-of-band management. The console port uses a standard null

modem cable and is set to auto-baud, 8 data bits, no parity and 1 stop

bit.

Power Socket Redundant Power System Socket

Console Port Redundant Power System Socket

Console

19200,8,1,N

Power Socket

DUA1750-0AAA01.book Page 16 Friday, December 5, 2003 10:24 AM

Default Settings 17

Default Settings Table 5 shows the default settings for the Switch:

Table 5 Default Settings

If you initialize a Switch unit by selecting System > Control > Initialize in

the Web interface or by entering system control initialize

in

the Command Line Interface, the following settings are retained to allow

you to connect to and manage the Switch:

■ IP Address

■ Subnet Mask

■ Default Gateway

Feature Switch

IP Configuration Automatic by DHCP client

Port Status Enabled

Port Speed All ports are auto-negotiated

Duplex Mode All ports are auto-negotiated

Flow Control ■ Disabled in half duplex 10/100 ports

■ Auto-negotiated in full duplex 10/100 ports

■ Disabled for 10/100/1000 ports

Broadcast Storm Control Enabled

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

(VLAN 1) with IEEE Std 802.1Q-1998 learning

operational

Link Aggregation Control

Protocol (LACP)

Disabled per port

Multicast Filtering IGMP Filtering enabled

Rapid Spanning Tree Protocol Enabled

Spanning Tree Fast Start ■ Enabled on 10/100 ports

■ Disabled on 10/100/1000 ports

Traffic Prioritization All ports prioritize NBX VoIP traffic (LAN and IP).

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

Port Security Disabled per port

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18 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 3226 AND SWITCH 3250

DUA1750-0AAA01.book Page 18 Friday, December 5, 2003 10:24 AM

2

INSTALLING THE SWITCH

This chapter contains the information you need to install and set up the

Switch. It covers the following topics:

■ Package Contents

■ Choosing a Suitable Site

■ Rack-mounting

■ Placing Units On Top of Each Other

■ The Power-up Sequence

WARNING: Safety Information. Before installing or removing any

components from the Switch or carrying out any maintenance

procedures, you must read the safety information provided in Appendix A

of this guide.

AVERTISSEMENT: Consignes de sécurité. Avant d'installer ou d'enlever

tout composant du Switch ou d'entamer une procédure de maintenance,

lisez les informations relatives à la sécurité qui se trouvent dans

l'Appendice A (Appendix A) de ce guide.

VORSICHT: Sicherheitsinformationen. Bevor Sie Komponenten aus

dem Switch entfernen oder dem Switch hinzufuegen oder

Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen,

die in Anhang A (Appendix A) in diesem Handbuch aufgefuehrt sind.

DUA1750-0AAA01.book Page 19 Friday, December 5, 2003 10:24 AM

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.

DUA1750-0AAA01.book Page 20 Friday, December 5, 2003 10:24 AM

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