3COM SuperStack II 1100 User Manual

	SuperStack® II Switch 1100
®	User Guide

3C16950, 3C16951

http://www.3com.com/

Part No. DUA1695-0AAA02

Published August 1998

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

Copyright © 1998, 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, Net Age, SmartAgent, SuperStack and Transcend are registered trademarks of

3Com Corporation. CoreBuilder and PACE are trademarks of 3Com Corporation. 3ComFacts is a service mark of 3Com Corporation.

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
	Year 2000 Compliance		10
	Documentation Comments			10
1 INTRODUCING THE SWITCH 1100
	About the SuperStack II Switch 1100					12
	Summary of Features		12
	Switch 1100 — Front View Detail				13
	Port Connections 13
	LEDs 14
	Switch 1100 — Rear View Detail				15
	Unit Information Label			15
	Power Socket	15
	Redundant Power System Socket					15
	Console Port	15
	Expansion Module Slot			16
	Transceiver Module Slot			16
	Matrix Port	16
	Network Configuration Examples				17
	Network Segmentation I			17
	Network Segmentation II			18
	Desktop Switching		19
	Configuration Rules for Fast Ethernet					20
	Configuration Rules with Full Duplex					21
2 INSTALLING THE SWITCH
	Choosing a Suitable Site		24
	Rack-mounting	24

	Wall-mounting	25
	Placing Units On Top of Each Other					27
	Stacking Units	27
	Stacking Two Units			27
	Stacking Multiple Units				28
	The Power-up Sequence			30
	Connecting a Redundant Power System 30
	Powering-up the Switch 1100					30
	Checking for Correct Operation					30
	Choosing the Correct Cables				31
	Solving Problems Indicated by LEDs					32
	Managing the Switch			33
A
	SAFETY INFORMATION
	Important Safety Information				36
	L’information de Sécurité Importante 38
	Wichtige Sicherheitsinformationen					40
B
	PIN-OUTS
	Null Modem Cable		41
	PC-AT Serial Cable		41
	Modem Cable	42
	RJ45 Pin Assignments			42

CTECHNICAL SPECIFICATIONS

DTECHNICAL SUPPORT

Online Technical Services		45
World Wide Web Site		45
3Com FTP Site	45
3Com Bulletin Board Service			46
3ComFacts Automated Fax Service				47
Support from Your Network Supplier				47
Support from 3Com	47
Returning Products for Repair			49

iv

GLOSSARY

INDEX

3COM CORPORATION LIMITED WARRANTY

EMC STATEMENTS

v

vi

ABOUT THIS GUIDE

This guide provides all the information you need to install and use a SuperStack® II Switch 1100 unit with default settings. If you want to change the way the Switch works using management software, refer to the “SuperStack II Switch Management Guide” (part number DUA1695-0BAA0x).

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).

This guide is intended for use with both Switch 1100 models:

■3C16950 — 24 10BASE-T ports

■3C16951 — 12 10BASE-T ports

All pictures and example screens show the 24-port model, however, all procedures apply to the 24-port model and the 12-port model.

If the information in the release notes that are shipped with your product differs 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	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 enable RIPIP, use the following syntax:
			SETDefault !<port> -RIPIP CONTrol =
			Listen
			In this example, you must supply a port number for <port>.
	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 remove the IP address, enter the following command:
			SETDefault !0 -IP NETaddr = 0.0.0.0
	The words “enter”		When you see the word “enter” in this guide, you must type
	and “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

Related Documentation

9

Table 2 Text Conventions (continued)

Convention	Description
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.

Related	In addition to this guide, each Switch 1100 document set includes the
Documentation	following:
	■ Management Guide (Part Number DUA1695-0BAA0x)
	This guide contains all the management information for the Switch.
	■ Quick Reference Guide (Part Number DQA1695-0AAA0x)
	This guide contains a quick summary of the hardware and software
	information for the Switch
	■ Quick Installation Guide (Part Number DIA1695-0AAA0x)
	This guide contains a summary of the package contents, and a quick
	summary of the installation information for the Switch.
	■ Release Notes (Part Number DNA1695-0AAA0x)
	These notes provide information about the current software release,
	including new features, modifications, and known problems.
	■ SuperStack II Switch Help
	This help provides information about the web interface software of
	the Switch. It is supplied on the SuperStack II Switch CD-ROM.
	■ SuperStack II Switch README File
	This file provides information about the current software release,
	including new features, modifications, and known problems.

10 ABOUT THIS GUIDE

	In addition, there are other publications you may find useful:
	■ Documentation accompanying the Expansion Modules.
	■ Documentation accompanying the Transceiver Modules.
	■ Documentation accompanying the Matrix Module and Matrix Cable.
	■ Documentation accompanying the Advanced Redundant Power
	System.
Year 2000	For information on Year 2000 compliance and 3Com products, visit the
Compliance	3Com Year 2000 Web page:
	http://www.3com.com/products/yr2000.html
Documentation	Your suggestions are very important to us. They will help make our
Comments	documentation more useful to you. Please e-mail comments about this
	document to 3Com at:
	[e-mail]
	Please include the following information when commenting:
	■ Document title
	■ Document part number (on the title page)
	■ Page number (if appropriate)

Example:

■SuperStack II Switch 1100 User Guide

■Part Number DUA1695-0AAA02

■Page 21

INTRODUCING THE SWITCH 1100

1

This chapter contains introductory information about the Switch and how it can be used in your network. It covers the following topics:

■About the SuperStack II Switch 1100

■Switch 1100 — Front View Detail

■Switch 1100 — Rear View Detail

■Network Configuration Examples

■Configuration Rules for Fast Ethernet

■Configuration Rules with Full Duplex

12 CHAPTER 1: INTRODUCING THE SWITCH 1100

About the	The SuperStack® II system solves the problem of growth in dynamic
SuperStack II	network environments and provides everything you need for successful
Switch 1100	workgroup networking. Much more than a collection of stackable
	components, the system comprises a complete, integrated architecture of
	modular parts that are easy to install and use.
	As part of this SuperStack II system, the Switch 1100 meets the challenge
	of modern LANs and allows you to add features and capacity as your
	network expands.

Summary of Features The Switch has the following hardware features:

■12 or 24 Ethernet 10BASE-T ports

■Two Fast Ethernet auto-negotiating 10BASE-T/100BASE-TX ports

■Matrix port for interconnecting Switch 1100 / Switch 3300 units in a single stack:

■Connect two units back-to-back using a single Matrix Cable

■Connect up to four units using Matrix Cables linked to a Matrix Module

■Slot for an Expansion Module or Matrix Module

■Slot for a Transceiver Module (10Mbps Ethernet)

■SuperStack II architecture:

■Connects to Redundant Power System / Uninterruptable Power System

■19-inch rack or stand-alone mounting

For information about the software features of the Switch, refer to the “SuperStack II Switch Management Guide” (DUA1695-0BAA01).

Switch 1100 — Front View Detail 13

Switch 1100 —

Front View Detail

Figure 1 Switch 1100 — Front view

Port Connections 10BASE-T Ports

The Switch has 12 or 24 10BASE-T ports configured as MDIX (cross-over). The maximum segment length is 100m (328ft) over Category 3, 4, or 5 twisted pair cable.

As these ports are configured as MDIX (cross-over), you need to use a cross-over cable to connect to devices whose ports are MDIX-only. See “Choosing the Correct Cables” on page 31 for more information.

10BASE-T/100BASE-TX Ports

The Switch has two auto-negotiating 10BASE-T/100BASE-TX ports configured as MDIX (cross-over). These ports can be set to 10BASE-T half duplex, 10BASE-T full duplex, 100BASE-TX half duplex, 100BASE-TX full duplex, or they can automatically detect the speed and duplex mode of a link and provide the appropriate connection. The maximum segment length is 100m (328ft) over Category 5 twisted pair cable.

As these ports are configured as MDIX (cross-over), you need to use a cross-over cable to connect to devices whose ports are MDIX-only. See “Choosing the Correct Cables” on page 31 for more information.

14 CHAPTER 1: INTRODUCING THE SWITCH 1100

LEDs Table 3 lists the LEDs visible on the front of the Switch, and their states according to color. For information on using the LEDs for problem solving, see “Checking for Correct Operation” on page 30.

Table 3	LED behavior
LED	Color	Indicates
TCVR	Yellow	Port 1 is a Transceiver Module fitted to the rear of the
		Switch.
	Off	Port 1 is operating as a 10BASE-T port.
Port Status LEDs
Packet	Yellow	Packets are being transmitted/received on the port.
	Off	No packets are being transmitted/received on the port.
Status	Green	A link is present, and the port is enabled.
	Green flashing	A link is present, but the port is disabled.
	Off	No link is present.
Expansion Module Port Status LEDs
Packet	Yellow	Packets are being transmitted/received on the
		Expansion Module or Matrix Module port(s).
	Off	No packets are being transmitted/received on the
		Expansion Module or Matrix Module port(s).
Status	Yellow	A valid Expansion Module or Matrix Module is
		installed.
	Yellow flashing	An unrecognized Expansion Module or Matrix Module
		is installed.
	Off	No Expansion Module or Matrix Module is installed.
Unit LEDs
1–8	Green	The Switch forms a stack with other Switch 1100 /
		Switch 3300 units; the LED indicates the position of
		the Switch in the stack and that a link is present. Note
		that although there are eight LEDs, only four Switch
		units can be stacked at present.
	Off	The Switch is stand-alone.
Power/Self Test LED
	Green	The Switch is powered-up.
	Green flashing	The Switch is either downloading software or is
		initializing (which includes running a Power On Self
		Test).
	Yellow	The Switch has failed its Power On Self Test.
	Off	The Switch is not receiving power.

Switch 1100 — Rear View Detail 15

Switch 1100 — Rear

View Detail

Figure 2 Switch 1100 — Rear view

Unit Information This label shows the following:

Label	The 3Com product name of the Switch
■

■ The 3Com 3C number of the Switch

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

■ The serial number of the Switch

You may need this information for fault reporting purposes.

Power Socket The Switch automatically adjusts its power setting to any supply voltage in the range 90–240V A.C.

Redundant Power To protect against internal power supply failure, you can use this socket System Socket to connect a SuperStack II Advanced Redundant Power System (RPS) to the Switch. See “Connecting a Redundant Power System” on page 30.

Console Port The console port allows you to connect a terminal and perform remote or local out-of-band management. The console port uses standard null modem cable and is set to auto-baud, 8 data bits, no parity and 1 stop bit.

16 CHAPTER 1: INTRODUCING THE SWITCH 1100

Expansion Module You can use this slot to install an Expansion Module that provides a Slot high-speed link to the rest of your network, or a Matrix Module that

provides four matrix ports for stacking Switch units together. 3Com provides a range of Expansion Modules; contact your supplier for availability. For more information about Matrix Modules, see “Stacking Units” on page 27.

When an Expansion Module or Matrix Module is not installed, ensure the blanking plate is secured in place.

Transceiver Module You can use this slot to install a Transceiver Module. When a Transceiver Slot Module is installed, the Transceiver Module port becomes port 1 and the

port labelled 1 on the front panel becomes inactive. The Transceiver Module can provide a 10Mbps Ethernet half duplex link to the rest of your network using various media such as fiber and coaxial cabling.

When a Transceiver Module is not installed, ensure the blanking plate is secured in place.

Matrix Port The matrix port allows you to:

■Stack the Switch with another Switch 1100 or Switch 3300 unit using a single Matrix Cable

■Stack the Switch with up to three other Switch 1100 or Switch 3300 units, if one of the units has a Matrix Module installed.

For more information about the role of matrix port, see “Stacking Units” on page 27.

Network Configuration Examples

17

Network

The following illustrations show some examples of how the Switch can be

Configuration

placed on your network.

Examples

Network

Figure 3 shows how the Switch 1100 fits into a large corporate network

Segmentation I

with a Fast Ethernet infrastructure. A Switch is positioned on each floor

and servers are centralized in the basement.

Figure 3 Using the Switch 1100 to segment your network

18 CHAPTER 1: INTRODUCING THE SWITCH 1100

Network Figure 4 shows the Switch 1100 in a second workgroup situation. This Segmentation II setup could be that of a small office within a large corporation, or part of

a larger corporate network. Most of the switch ports have multiple endstations.

Figure 4 Using the Switch 1100 to segment your network

Network Configuration Examples

19

Desktop Switching Figure 5 shows the Switch 1100 used for a group of users in a large corporate network. Here switching is brought to the desktop with a single endstation per port. Local servers are connected via 100Mbps Fast Ethernet links.

Figure 5 Using the Switch 1100 in a desktop environment