3COM SuperStack II 3C39036, SuperStack II 3C39024, SuperStack II 10005622 User Manual

4 (1)

 

SuperStack® II Switch 3900

®

Getting Started Guide

 

http://www.3com.com/

Part No. 10005622

Published April 1998

3Com Corporation 5400 Bayfront Plaza

Santa Clara, California 95052-8145

Copyright © 1998, 3Com Corporation. All rights reserved. No part of this

EMISSIONS COMPLIANCE STATEMENTS FOR CLASS A PRODUCTS

documentation may be reproduced in any form or by any means or used to

United States — Federal Communications Commission Notice

make any derivative work (such as translation, transformation, or adaptation)

This equipment has been tested and found to comply with the limits for a

without written permission from 3Com Corporation.

Class A digital device, pursuant to Part 15 of the FCC Rules. These limits

 

3Com Corporation reserves the right to revise this documentation and to make

are designed to provide responsible protection against harmful

changes in content from time to time without obligation on the part of 3Com

interference when the equipment is operated in a commercial environment.

Corporation to provide notification of such revision or change.

This equipment generates, uses, and can radiate radio frequency energy

3Com Corporation provides this documentation without warranty of any kind,

and, if not installed and used in accordance with the instruction manual,

may cause harmful interference to radio communications. Operation of this

either implied or expressed, including, but not limited to, the implied

equipment in a residential area is likely to cause harmful interference, in

warranties of merchantability and fitness for a particular purpose. 3Com may

which case the user will be required to correct the interference at his or her

make improvements or changes in the product(s) and/or the program(s)

own expense.

described in this documentation at any time.

 

UNITED STATES GOVERNMENT LEGENDS

Canada — Emissions Requirements

This Class A digital apparatus meets all requirements of the Canadian

 

If you are a United States government agency, then this documentation and

Interference-Causing Equipment Regulations.

the software described herein are provided to you subject to the following:

Cet appareil numérique de la classe A respecte toutes les exigences du

 

All technical data and computer software are commercial in nature and

Règlement sur le matériel brouilleur du Canada.

developed solely at private expense. Software is delivered as “Commercial

Japan — VCCI Class A Compliance

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.

 

 

This is a Class A product based on the standard of the Voluntary Control

 

Council for Interference by Information Technology Equipment (VCCI). If

 

this equipment is used in a domestic environment, radio disturbance may

 

arise. When such trouble occurs, the user may be required to take

 

corrective actions.

EMC DIRECTIVE COMPLIANCE

This equipment was tested and found to conform to the Council Directive 89/336/EEC for electromagnetic compatibility. Conformity with this Directive is based upon compliance with the following harmonized standards:

EN 55022 Limits and Methods of Measurement of Radio Interference

EN 50082-1 Electromagnetic Compatibility Generic Immunity Standard: Residential, Commercial, and Light Industry

Warning: This is a Class A product. In a domestic environment, this product may cause radio interference, in which case you may be required to take adequate measures.

LOW VOLTAGE DIRECTIVE COMPLIANCE

This equipment was tested and found to conform to the Council Directive 72/23/EEC for safety of electrical equipment. Conformity with this Directive is based upon compliance with the following harmonized standard:

EN 60950 Safety of Information Technology Equipment

UK GENERAL APPROVAL STATEMENT

This equipment is manufactured to the international Safety Standard EN60950 and is approved in the UK under the General Approval Number NS/G/12345/J/100003 for indirect connection to the public telecommunication network.

AUSTRALIAN EMC FRAMEWORKS COMPLIANCE

This product conforms to the EMC Frameworks and meets the Class A limits of AS3548.

TRADEMARKS

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, SuperStack, and Transcend are registered trademarks of 3Com Corporation. 3ComFacts is a service mark of 3Com Corporation.

IBM and NetView AIX are registered trademarks of International Business Machines Corporation. Apple, AppleTalk, and Macintosh are trademarks of Apple Computer, Inc. Ultrajet is a trademark of Chemtronics. CompuServe is a registered trademark of CompuServe, Inc. MS-DOS and Windows are registered trademarks of Microsoft Corporation. HP and OpenView are registered trademarks of Hewlett-Packard Co. SunNet Manager, SunOS, and OpenWindows are trademarks of Sun Microsystems, Inc. Microswabs and Texwipe are registered trademarks of Texwipe. Liqui-Tool is a trademark of Triangle Tool Group. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company.

All other company and product names may be trademarks of the respective companies with which they are associated.

CONTENTS

ABOUT THIS GUIDE

Introduction

1

 

 

 

Finding Specific Information in This Guide

1

Conventions

2

 

 

 

SuperStack II Switch 3900 Documentation

3

Paper Documents

3

 

 

Documents on CD-ROM

4

 

Related Publications

4

 

 

Documentation Comments

4

 

Year 2000 Compliance

5

 

 

1 SWITCH 3900 SYSTEM AND SETUP OVERVIEW

Switch 3900 Intelligent Switch

1-1

 

 

System Overview — 24-Port Front Panel

1-2

 

System Overview — 36-Port Front Panel

1-3

 

System Overview — Back Panel of Both Models

1-4

System Features and Benefits

1-5

 

 

System Management 1-5

 

 

 

Optional Gigabit Ethernet Modules 1-6

 

 

Network Configuration Example

1-6

 

 

Providing Dedicated Links for Fast Ethernet

1-6

Network Configuration Sample

1-7

 

 

2

INSTALLING THE SYSTEM

 

 

 

 

Before You Begin

2-1

 

 

 

 

 

Installing the System on a Table Top or in a Free-Standing

 

Stack 2-2

 

 

 

 

 

 

Installing the System in a Distribution Rack

2-3

 

 

Preparing the System and Rack

2-3

 

 

 

Mounting the System into a Distribution Rack

2-5

3

 

 

 

 

CABLING SWITCH 3900 PORTS

 

 

 

 

Overview of Cabling

3-1

 

 

 

 

Fiber Safety Precautions

3-1

 

 

 

 

Fast Ethernet Ports

3-2

 

 

 

 

 

Cabling 10/100BASE-TX (RJ-45) Ports

3-2

 

 

10/100BASE-TX (RJ-45) Connector Pin Assignments 3-3

 

Gigabit Ethernet Ports

3-4

 

 

 

 

Cabling Gigabit Ethernet Ports

3-4

 

 

 

Cabling the Console Port

3-5

 

 

 

 

Console Port Pin Assignments

3-7

 

 

4

 

 

 

 

 

SYSTEM POWER UP

 

 

 

 

 

Power Options 4-1

 

 

 

 

 

AC Power Cord

4-1

 

 

 

 

Optional Advanced Redundant Power System

4-1

 

Optional Uninterruptible Power System

4-1

 

Power Up 4-2

To Power the Switch 3900 with the RPS 4-2 To Power the Switch 3900 from the Wall

Receptacle

4-2

 

 

Power-up Diagnostics

4-2

 

System Diagnostics

4-3

Power LED Activity

4-3

Fault LED Activity

4-3

Ethernet Port Diagnostics

4-3

Packet LED Activity

4-3

Status LED Activity

4-3

System and Port Status LEDs

4-4

System Checks

4-5

 

 

Next Step: Software Configuration 4-5

5QUICK SETUP FOR MANAGEMENT ACCESS

About Switch 3900 System Management

5-1

How Do You Want to Manage the System?

5-1

Terminal Connection

5-2

 

Modem Connection

5-2

 

IP Management Interface

5-2

 

Initial Management Access

 

5-2

 

Setting the Console Port Baud 5-3

 

Configuring the IP Interface

5-3

 

6 TROUBLESHOOTING THE SYSTEM

Getting Additional Help

6-1

Diagnosing Problems

6-1

Power Failures

6-1

 

Abnormal LED Activity

6-1

Cleaning Dirty Fiber Optic Ports and Connectors 6-4

ASYSTEM SPECIFICATIONS

BSITE REQUIREMENTS AND SAFETY CODES

 

General Safety Requirements

B-1

 

 

Wiring Closet Recommendations

B-1

 

 

Distribution Rack Requirements

 

B-2

 

 

Protective Grounding for the Rack

B-2

 

Space Requirements for the Rack

B-2

 

Mechanical Requirements for the Rack B-3

 

Building and Electrical Codes

B-4

 

 

Building Codes

B-4

 

 

 

 

 

Electrical Codes

B-5

 

 

 

 

C

 

 

 

 

 

TECHNICAL SUPPORT

 

 

 

 

 

Online Technical Services

C-1

 

 

 

 

World Wide Web Site

C-1

 

 

 

3Com FTP Site

C-1

 

 

 

 

 

3Com Bulletin Board Service

 

C-1

 

 

Access by Analog Modem

C-2

 

Access by Digital Modem

C-2

 

 

3ComFacts Automated Fax Service

C-2

 

Support from Your Network Supplier

C-2

 

Support from 3Com

C-3

 

 

 

 

 

Returning Products for Repair

C-4

 

INDEX

3COM CORPORATION LIMITED WARRANTY

ABOUT THIS GUIDE

Introduction

Your SuperStack II Switch 3900 Getting Started Guide provides all the information that you need to set up your SuperStack® II Switch 3900 system and get it operating in your network. This guide provides an overview of your system and step-by-step procedures for planning your configuration, installing your system, cabling, powering up, configuring, and troubleshooting. When you are ready to configure your SuperStack II Switch 3900 system, see the Administration Guide on the Documentation CD.

If the information in the Software Installation and Release Notes that are shipped with your Switch 3900 system differs from the information in this guide, follow the instructions in the Release Notes.

This guide is intended for the system or network administrator who is responsible for installing and managing network hardware. It assumes that you have a working knowledge of local area network (LAN) operations, but it does not assume prior knowledge of 3Com’s Switch 3900 high-performance networking equipment.

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

Finding Specific Information in This Guide

This table shows where to find specific information.

For information on

Turn to

 

 

Best ways to use the Switch

“System Features and Benefits”

3900 system

on page 1-5

The front and back panels

“System Overview — 24-Port

 

Front Panel” starting on page 1-2

Site requirements and other

“General Safety Requirements” on

issues to consider before

page B-1

installing your Switch 3900

 

system

 

Installing the system on a table or in a distribution rack

Cabling rules and pin assignments:

Fast Ethernet ports

Gigabit Ethernet ports

Console port

“Installing the System on a Table Top or in a Free-Standing Stack” starting on page 2-2 and “Installing the System in a Distribution Rack” on page 2-3

“Fast Ethernet Ports” on page 3-2

“Gigabit Ethernet Ports” on page 3-4

“Cabling the Console Port” on page 3-5 and “Console Port Pin Assignments” on page 3-7

Checking system power-up

“Power Up” on page 4-2

diagnostics and LEDs

 

 

 

(continued)

 

2 ABOUT THIS GUIDE

For information on

Turn to

Deciding how to manage your system

Setting the Console port baud

Configuring the IP management interface

Troubleshooting hardware and software problems

Complying with environmental and compliance specifications

Checking your site for environmental and safety considerations

Getting help from your network supplier or 3Com

“How Do You Want to Manage the System?” on page 5-1

“Setting the Console Port Baud” on page 5-3

“Configuring the IP Interface” on page 5-3

“Diagnosing Problems” on page 6-1

Appendix A: System Specifications

Appendix B: Site Requirements

and Safety Codes

Appendix C: Technical Support

Conventions

Table 1 and Table 2 list conventions that are used throughout this guide.

Table 1 Notice Icons

Icon

Type

Description

 

 

 

 

Information

Information that describes important

 

Note

features or instructions

 

Caution

Information that alerts you to potential loss

 

 

of data or damage to an application,

 

 

system, or device

 

Warning

Information that alerts you to potential

 

 

personal injury

 

 

 

Table 2 Text Conventions

Convention

Description

 

 

Screen

This typeface represents information as it

displays

appears on the screen.

 

 

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 update the system software, enter the

 

following command:

system softwareUpdate

 

This guide always gives the full form of a

 

command in uppercase and lowercase letters.

 

However, you can abbreviate commands by

 

entering the fewest letters in each command

 

that identify a unique command. Commands

 

are not case sensitive.

 

 

The words

When you see the word “enter” in this guide,

“enter”

you must type something, and then press Return

and “type”

or Enter. Do not press Return or Enter when an

 

instruction simply says “type.”

 

 

Keyboard key

If you must press two or more keys

names

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.

SuperStack II Switch 3900 Documentation

The following documents comprise the SuperStack II Switch 3900 documentation set. Documents are shipped with your system in one of two forms:

Paper documents that are shipped with your system or with optional components. They are listed in the next section.

SuperStack II 3900 and 9300 Documentation CD with online versions of the paper documents

To order a paper copy of a document that you see on the compact disc, or to order additional compact discs, contact your sales representative.

Paper Documents

These documents are shipped with your SuperStack II Switch 3900 system:

SuperStack II Switch 3900 and 9300 Unpacking Instructions

How to unpack your Switch 3900 system. Also, an inventory list of items that are shipped with your system.

SuperStack II Switch 3900 and 9300 Software Installation and Release Notes

All of the new features, system issues, known problems, and software corrections for the software release. It also describes any changes to the Switch 3900 system’s documentation.

SuperStack II Switch 3900 Documentation

3

SuperStack II Switch 3900 and 9300 Quick Installation Guide

How to perform a quick installation of your system. For more details on installation, see the

SuperStack II Switch 3900 Getting Started Guide.

SuperStack II Switch 3900 Getting Started Guide

All the procedures necessary for getting your system up and running, including information on installing, cabling, powering up, configuring, and troubleshooting the system.

SuperStack II Switch 3900 and 9300 Command Quick Reference Card

All of the Administration Console switching commands for the Switch 3900. For complete descriptions, see the Administration Guide.

These documents are shipped with optional devices:

1000BASE-SX/1000BASE-LX Gigabit Ethernet

Module Installation Guide

How to install the optional Gigabit Ethernet module.

SuperStack II Switch Advanced RPS User Guide

How to install the Advanced Redundant Power Supply (RPS) and how to use it to provide redundant and resilient power supplies for the Switch 3900.

SuperStack II Switch Advanced RPS ‘Y’ Cable Type 2 User Guide

How to install the Y cable with the Advanced Redundant Power Supply (RPS) to provide fully redundant capabilities.

4 ABOUT THIS GUIDE

Documents on CD-ROM

The compact disc that comes with your system contains these documents:

Online versions of the paper documents that are shipped with your system and its components

SuperStack II Switch 3900 and 9300 Administration Guide

How to use the Administration Console and the management tasks that you can perform using it.

Related Publications

Depending on how you install and manage your system, several related documents can provide helpful information:

SNMP Network Manager documents

The Switch 3900 uses SNMP (Simple Network Management Protocol), which can be accessed by a remote network management application. 3Com has network management applications for a variety of platforms. Contact your supplier for current product information. Each network management application includes a guide that explains how to manage your system.

If you are using network management software from another vendor, refer to the sections of the product’s documentation that describe how to manage SNMP devices.

SNMP documents

3Com recommends these books for easy-to-read descriptions of SNMP:

Marshall T. Rose. The Simple Book: An Introduction to Networking Management. Englewood Cliffs, NJ: Prentice-Hall; 1996.

“Introduction to SNMP” Self-Study Guide. Order from 3Com: Part Number 3CS-350A.

Telnet documents

To manage the Switch 3900 system over a TCP/IP network using telnet, see the documentation that is supplied with your telnet application.

Documentation Comments

Your suggestions are very important to us. They help us make our documentation more useful to you.

Please send e-mail comments about this guide to:

sdtechpubs_comments@3Com.com

Please include the following information when commenting:

Document title

Document part number (found on front or back page of document)

Page number (if appropriate)

Example:

SuperStack II Switch 3900 Getting Started Guide

Part Number 10005622

Page 2-5 (chapter 2, page 5)

Year 2000 Compliance

5

Year 2000 Compliance

For information on Year 2000 compliance and 3Com products, visit the 3Com Year 2000 Web page:

http://www.3com.com/products/yr2000.html

1

SWITCH 3900 SYSTEM AND SETUP OVERVIEW

 

This chapter contains:

An overview of 3Com’s SuperStack® II Switch 3900 and how it provides solutions for your network

A description of the major features and components of the system

A network configuration example

Switch 3900 Intelligent Switch

The Switch 3900 is the ideal product for network managers who want to migrate from existing switched 10 Mb networks to switched 100 Mb or who need to deliver faster access to servers.

The Switch 3900 provides superior workgroup and departmental switching performance with the added flexibility of multiple Gigabit Ethernet links and server connections.

The SuperStack II Switch 3900 family delivers full line rate, nonblocking switching between 10/100 Mb links and 1000 Mb Gigabit Ethernet links.

The Switch 3900 family consists of two models:

3C39024 — The 24-port 10/100BASE-TX switch, with up to three Gigabit Ethernet links. See Figure 1-1.

3C39036 — The 36-port 10/100BASE-TX switch, with up to three Gigabit Ethernet links. See Figure 1-2.

Both versions of the Switch 3900 provide:

One built-in Gigabit Ethernet multimode fiber (MMF) link (1000BASE-SX)

Expansion slots on the back panel (see Figure 1-3) that can hold one or two of these optional Gigabit Ethernet modules:

Model 3C39001 — 1000BASE-SX for multimode fiber (MMF)

Model 3C39002 — 1000BASE-LX for single-mode fiber (SMF)

The cables for all Gigabit Ethernet ports use laser transmission and have SC connectors.

See “Optional Gigabit Ethernet Modules” on page 1-6 for more information.

1-2 CHAPTER 1: SWITCH 3900 SYSTEM AND SETUP OVERVIEW

System Overview — 24-Port Front Panel

Ethernet Ports

System and Port LEDs

Provide 24 10/100BASE-TX

Provide information about

(RJ-45) Ethernet ports

the system and each port

 

10/100 BASE - TX

 

1x

6x

13x

18x

Status

green

= enabled, link OK

 

flashing green

= disabled, link OK

Power Fault

off

= link fail

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

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Stat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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7x 12x 19x 24x Super Stack II Switch 3900

Figure 1-1 Front Panel of the 24-Port SuperStack II Switch 3900

3COM SuperStack II 3C39036, SuperStack II 3C39024, SuperStack II 10005622 User Manual

System Overview — 36-Port Front Panel

1-3

System Overview — 36-Port Front Panel

v

Ethernet Ports

System and Port LEDs

Provide 36 10/100BASE-TX

Provide information about

(RJ-45) Ethernet ports

the system and each port

 

 

 

10/100 BASE - TX

 

 

1x

6x

13x

18x

25x

30x

Status

green

= enabled, link OK

 

flashing green

= disabled, link OK

Power Fault

off

= link fail

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Stat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Stat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24x

 

31x

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7x

 

 

12x

 

19x

 

 

 

 

 

36x

 

Super Stack II Switch 3900

 

 

 

Figure 1-2 Front Panel of the 36-Port SuperStack II Switch 3900

1-4 CHAPTER 1: SWITCH 3900 SYSTEM AND SETUP OVERVIEW

System Overview — Back Panel of Both Models

Optional Gigabit Ethernet Slots

Allow you to add additional

Gigabit Ethernet modules

Fixed Gigabit Ethernet Port

Provides a 1000BASE-SX link

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1000 Base SX

 

 

Console

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pckt

Stat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RPS Connector

 

 

 

 

 

 

 

 

Gigabit Ethernet Port LEDs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connects to the Optional

 

 

 

 

 

 

 

 

Provide information on the

 

 

 

 

 

 

 

 

 

 

 

Redundant Power System

 

 

 

 

 

 

 

 

port status and activity

 

 

 

 

 

 

 

 

 

Power Receptacle

 

 

 

 

 

 

 

 

Console Port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Allows you to connect a workstation or modem to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the Switch 3900 system for management access

 

 

 

Figure 1-3 Back Panel of the 24-Port and 36-Port SuperStack II Switch 3900

System Features and Benefits

The Switch 3900 is part of 3Com’s SuperStack family. To combine diverse technologies as your network grows, install the Switch 3900 in a SuperStack network.

Some key features of the SuperStack II Switch 3900 system:

High-density Gigabit Ethernet and Fast Ethernet configurations

The Switch 3900 has 24 or 36 Fast Ethernet ports and up to three Gigabit Ethernet links.

Autonegotiation support

The Switch 3900 supports 10BASE-T/100BASE-TX and full-duplex and half-duplex autonegotiation on all front panel ports.

Multiple-link trunking for Gigabit Ethernet and Fast Ethernet links

You can choose the performance level of links between switches, even scaling beyond one Gigabit.

IGMP Snooping

The Switch 3900 conserves the network bandwidth that is consumed by audio and video applications by keeping IP multicast traffic isolated to specific ports.

System Features and Benefits

1-5

Trunking links, Spanning Tree, and Advanced Redundant Power Supply (RPS) support

The Switch 3900 protects against cable and equipment failures with Spanning Tree Protocol and trunking links. The optional RPS protects against power interruptions for fault-tolerant networks.

Manageability

The Switch 3900 provides full support for VLANs, Fast IP, and RMON Version 1, as well as a roving analysis port through SNMP management.

System Management

Switch 3900 systems include integrated management to provide fault tolerance and maximum network availability. This management is accessible in two ways:

Switch 3900 Administration Console

Standard network managers based on SNMP, such as 3Com’s Transcendware, Sun’s SunNet Manager, HP OpenView, and IBM’s NetView AIX applications

1-6 CHAPTER 1: SWITCH 3900 SYSTEM AND SETUP OVERVIEW

Optional Gigabit Ethernet Modules

The Switch 3900 back panel has two expansion slots that can hold optional Gigabit Ethernet modules. These modules are available in the following configurations:

1000BASE-SX Module — Multimode fiber with paired SC connectors. It supports links of up to 260 meters (852 feet) over 62.5-micron multimode fiber or up to 525 meters (1722 feet) over 50-micron multimode fiber.

1000BASE-LX Module — Single-mode fiber with paired SC connectors. It supports links of up to 3.0 kilometers (1.86 miles) over 8-micron to 10-micron single-mode fiber.

The modules have the same physical configuration and are installed in the same way.

For more information about installing and using the optional Gigabit Ethernet modules, see the

1000BASE-SX/1000BASE-LX Gigabit Ethernet Module Installation Guide that is on the Documentation CD and shipped with either module.

Network Configuration Example

This section describes one way to place the Switch 3900 in your network to alleviate traffic congestion.

Providing Dedicated Links for Fast Ethernet

The rapid deployment of Fast Ethernet has increased bandwidth demand many times over, not only by supporting 100 Mb connections on the network but also by placing demands on the servers to manage the traffic coming through those connections.

Figure 1-4 shows how the Switch 3900 provides direct 100 Mb links to devices on the network through its Fast Ethernet ports and up to three dedicated Gigabit links to your network’s servers.

In this sample configuration, the Switch 3900 can provide up to 36 clients on your network with a dedicated 100 Mb link and can multiplex the client traffic for Gigabit-speed access to the servers. (You can use one port on the Switch 3900 for in-band management as well as for network traffic.)

Network Configuration Sample

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Network Configuration Sample

Switched Gigabit

Switched 100 Mb

server farm

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10/100 BASE - TX

 

 

 

 

 

 

 

 

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flashing green

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36-Port SuperStack® II Switch 3900

Figure 1-4 SuperStack II Switch 3900 Provides Dedicated Fast Ethernet Links

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