SuperStack® 3
Switch 4400 Series
Getting Started Guide
Switch 4400 (3C17203)
Switch 4400 (3C17204)
Switch 4400 PWR (3C17205)
Switch 4400 SE (3C17206)
Switch 4400 FX (3C17210)
http://www.3com.com/
Part No. DUA1720-3AAA07
Published March 2004
3Com Corporation
350 Campus Drive
Marlborough,
MA 01752-3064
Copyright © 2004, 3Com Corporation. 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 Corporation.
3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.
3Com Corporation 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 registered trademarks of 3Com Corporation.
Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of Novell, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd.
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All other company and product names may be trademarks of the respective companies with which they are associated.
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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.
End of Life Statement
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.
Environmental Statement about the Documentation
The documentation for this product is printed on paper that comes from sustainable, managed forests; it is fully biodegradable and recyclable, and is completely chlorine-free. The varnish is environmentally-friendly, and the inks are vegetable-based with a low heavy-metal content.
ENCRYPTION
This product contains encryption and may require U.S. and/or local government authorization prior to export or import to another country.
CONTENTS
ABOUT THIS GUIDE
Before You Start |
7 |
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Release Notes |
7 |
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About Your CD-ROM |
8 |
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Conventions 8 |
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Related Documentation |
9 |
Accessing Online Documentation 10
Documentation Comments 10
Product Registration 11
1INTRODUCING THE SUPERSTACK 3 SWITCH 4400
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About the Switch 4400 |
14 |
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Summary of Hardware Features |
14 |
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Switch 4400 — Front View Detail |
15 |
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10BASE-T/ 100BASE-TX Ports |
16 |
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100BASE-FX Ports |
16 |
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LEDs 17 |
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Switch 4400 — Rear View Detail |
19 |
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Power Socket |
19 |
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Redundant Power System Socket 19 |
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Console Port |
19 |
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Expansion Module Slots 19 |
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Default Settings |
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2 INSTALLING THE SWITCH |
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Package Contents |
24 |
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Choosing a Suitable Site |
24 |
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Rack-mounting |
25 |
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Placing Units On Top of Each Other |
27 |
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Stacking Units 27 |
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How To Stack Units |
27 |
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Rules For Stacking Units |
28 |
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The Power-up Sequence |
30 |
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Powering-up the Switch 4400 |
30 |
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Checking for Correct Operation of LEDs |
30 |
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Connecting a Redundant Power System |
30 |
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Using Power over Ethernet |
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Choosing the Correct Cables (Switch 4400, 4400 SE and |
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4400 PWR) 32 |
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Choosing the Correct Cables (Switch 4400 FX) |
33 |
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3 SETTING UP FOR MANAGEMENT |
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Setting Up Overview 36 |
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IP Configuration |
37 |
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Preparing for Management |
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Manually Configuring IP Information |
39 |
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Connecting to a Front Panel Port |
39 |
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Connecting to the Console Port |
42 |
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Viewing Automatically Configured IP Information |
46 |
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Using 3Com Network Supervisor |
46 |
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Connecting to the Console Port |
46 |
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Methods of Managing a Switch |
49 |
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Command Line Interface Management |
49 |
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Command Line Interface Management using SSH 50 |
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Web Interface Management |
50 |
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SNMP Management |
50 |
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Setting Up Command Line Interface Management |
50 |
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CLI Management via the Console Port |
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51 |
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CLI Management over the Network |
51 |
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Setting Up Command Line Interface Management using SSH 52 |
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Setting Up Web Interface Management |
53 |
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Pre-requisites |
53 |
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Web Management Over the Network |
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54 |
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Setting Up SNMP Management |
54 |
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Pre-requisites |
55 |
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Default Users and Passwords |
55 |
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Changing Default Passwords |
55 |
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4 |
PROBLEM SOLVING |
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Solving Problems Indicated by LEDs |
58 |
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Solving Hardware Problems |
59 |
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Solving Communication Problems |
62 |
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Solving Software Upgrade Problems |
63 |
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A |
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SAFETY INFORMATION |
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Power Cord Set — Japan |
65 |
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Important Safety Information |
66 |
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L’information de Sécurité Importante |
68 |
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Wichtige Sicherheitsinformationen |
70 |
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B |
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PIN-OUTS |
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Null Modem Cable |
73 |
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PC-AT Serial Cable |
73 |
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Modem Cable |
74 |
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RJ-45 Pin Assignments |
74 |
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C |
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TECHNICAL SPECIFICATIONS |
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Switch 4400 (24-port) and Switch 4400 SE |
77 |
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Switch 4400 PWR (24-port) |
79 |
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Switch 4400 (48-port) |
80 |
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Switch 4400 FX |
81 |
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D |
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OBTAINING SUPPORT FOR YOUR PRODUCT |
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Register Your Product to Gain Service Benefits |
83 |
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Purchase Value-Added Services 83 |
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Troubleshoot Online |
83 |
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Access Software Downloads |
84 |
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Contact Us 84 |
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Telephone Technical Support and Repair 84 |
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INDEX
REGULATORY NOTICES
This guide provides all the information you need to install and use the following switches in their default state:
■SuperStack® 3 Switch 4400 (3C17203)
■SuperStack® 3 Switch 4400 (3C17204)
■SuperStack® 3 Switch 4400 PWR (3C17205)
■SuperStack® 3 Switch 4400 SE (3C17206)
■SuperStack® 3 Switch 4400 FX (3C17210)
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 differ from the information in this guide, follow the instructions in the Release Notes.
8 ABOUT THIS GUIDE
About Your CD-ROM The CD-ROM contains the following:
■Online documentation for the Switch 4400 — 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/
Conventions |
Table 1 and Table 2 list conventions that are used throughout this guide. |
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Table 1 |
Notice Icons |
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Icon |
Notice Type |
Description |
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Information note |
Information that describes important features or |
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instructions |
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Caution |
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Information that alerts you to potential loss of data or |
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potential damage to an application, system, or device |
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Warning |
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Information that alerts you to potential personal injury |
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Table 2 |
Text Conventions |
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Convention |
Description |
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Screen displays |
This typeface represents information as it appears on the |
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screen. |
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Syntax |
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The word “syntax” means that you must evaluate the syntax |
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provided and then supply the appropriate values for the |
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placeholders that appear in angle brackets. Example: |
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To change your password, use the following syntax: |
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system password <password> |
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In this example, you must supply a password for <password>. |
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Commands |
The word “command” means that you must enter the |
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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
Related Documentation |
9 |
Table 2 Text Conventions (continued)
Convention |
Description |
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 |
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Return or Enter when an instruction simply says “type.” |
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Keyboard key names |
If you must press two or more keys simultaneously, the key |
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names are linked with a plus sign (+). Example: |
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Press Ctrl+Alt+Del |
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Words in italics |
Italics are used to: |
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■ Emphasize a point. |
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■ Denote a new term at the place where it is defined in the |
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text. |
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■ Identify menu names, menu commands, and software |
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button names. Examples: |
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From the Help menu, select Contents. |
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Click OK. |
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Related |
In addition to this guide, each Switch documentation set includes the |
Documentation |
following: |
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■ SuperStack 3 Switch Implementation Guide |
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This guide contains information on the features supported by your |
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Switch and how they can be used to optimize your network. It is |
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supplied in PDF format on the CD-ROM that accompanies the Switch. |
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■ SuperStack 3 Switch Management Quick Reference Guide |
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This guide contains: |
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■ a list of the features supported by the Switch. |
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■ a summary of the web interface and command line interface |
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commands for the Switch. |
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■ SuperStack 3 Switch Management Interface Reference Guide |
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This guide provides detailed information about the web interface and |
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command line interface that enable you to manage the Switch. It is |
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supplied in HTML format on the CD-ROM that accompanies the |
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Switch. |
10 ABOUT THIS GUIDE
■Release Notes
These notes provide information about the current software release, including new features, modifications, and known problems. The Release Notes are supplied in hard copy with your Switch.
There are other publications you may find useful, such as:
■Documentation accompanying the Advanced Redundant Power system.
■Documentation accompanying the Expansion Modules.
■Documentation accompanying 3Com Network Supervisor. This is supplied on the CD-ROM that accompanies the Switch.
Accessing Online |
To access the documentation on the CD-ROM supplied with your Switch, |
Documentation |
do the following: |
1Insert the CD-ROM into your CD-ROM drive. If your PC has auto-run enabled, a splash screen will be displayed automatically.
2Select the Documentation section from the contents page.
If the online documentation is to be accessed from a local drive or server, you will need to access the CD-ROM contents via the root directory and copy the files from the CD-ROM to a suitable directory.
■The HTML Reference Guide is stored in the Docs/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.
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3Com recommends that you copy the Docs/reference directory as a |
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whole to maintain the structure of the files. |
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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 |
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document to 3Com at: |
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pddtechpubs_comments@3com.com |
Product Registration |
11 |
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Please include the following information when commenting: |
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■ Document title |
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■ Document part number (on the title page) |
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■ Page number (if appropriate) |
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Example: |
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Part Number DUA1720-3AAA07 |
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SuperStack 3 Switch 4400 Series Getting Started Guide |
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Page 21 |
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Please note that we can only respond to comments and questions about |
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3Com product documentation at this e-mail address. Questions related to |
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technical support or sales should be directed in the first instance to your |
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network supplier. |
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Product |
You can now register your SuperStack 3 Switch on the 3Com web site to |
Registration |
receive up-to-date information on your product: |
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http://www.3com.com/register |
12 ABOUT THIS GUIDE
1 |
INTRODUCING THE |
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SUPERSTACK 3 SWITCH 4400 |
This chapter contains introductory information about the Switch 4400 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 4400
■Switch 4400 — Front View Detail
■Switch 4400 — Rear View Detail
■Default Settings
14 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400
About the Switch The Switch 4400 is a stackable 10/100 Mbps Ethernet switch and 4400 provides high-performance workgroups with a backbone to server
connection. The Switch 4400 allows Cascade, Gigabit Ethernet or Fast Ethernet Fiber connections when expansion modules are installed in the expansion slots on the rear of the unit. You can also add the Switch 4400 to any SuperStack® system as your network grows.
The Switch 4400 PWR (3C17205) supports Power over Ethernet on all front panel ports. If you plug in a compatible (IEEE 802.3af compliant) device, it will be automatically detected and power supplied to it. Power over Ethernet is enabled on each port by default.
The Switch 4400 FX (3C17210) has 24 100BASE-FX MT-RJ ports. These allow easy connection of 100 Mbps fiber-optic links.
Summary of Table 3 summarizes the hardware features that are supported by the
Hardware Features Switch 4400.
Table 3 Hardware features
Feature |
Switch 4400 |
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Addresses |
■ Up to 8000 supported |
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■ Up to 64 permanent entries |
Auto-negotiation |
■ Supported on all ports |
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■ Auto MDI/MDI-X (not 3C17210) |
Forwarding Modes |
Store and Forward |
Duplex Modes |
Half and full duplex on all front panel ports |
Flow Control |
In full duplex operation all ports are supported |
Smart Auto-sensing |
Supported on all ports |
Traffic Prioritization |
Supported (using the IEEE Std 802.ID, 1998 Edition): |
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4 queues per port |
Power over Ethernet |
Supported on all front panel ports (3C17205 only). |
Ethernet and Fast Ethernet |
Auto-negotiating 10BASE-T/100BASE-TX ports or |
Ports |
100BASE-FX ports (3C17210) |
RPS Support |
Connects to SuperStack 3 Advanced Redundant |
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Power System (ARPS) (3C16071B) |
Mounting |
19-inch rack or stand-alone mounting |
Stacking |
All Switch units in the stack can be managed as a |
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single entity with one IP address |
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Switch 4400 — Front View Detail 15
Switch 4400 — |
Figure 1 Switch 4400 FX — front view |
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Front View Detail |
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Figure 2 Switch 4400 (24-port) / Switch 4400 SE — front view
Port LEDs
Power / Self Test LED
(Packet and Status)
P |
1 |
S |
P |
2 |
S |
P |
3 |
S |
P |
4 |
S |
P |
5 |
S |
P |
6 |
S |
P |
7 |
S |
P |
8 |
S |
P |
9 |
S |
P |
10 |
S |
P |
11 |
S |
P |
12 |
S |
Status - Green = 100Mbps |
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Yellow = 10Mbps |
on = enabled, link OK |
flashing = disabled |
Switch 4400 |
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P |
13 |
S |
P |
14 |
S |
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15 |
S |
P |
16 |
S |
P |
17 |
S |
P |
18 |
S |
P |
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P |
20 |
S |
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21 |
S |
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23 |
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24 |
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Packet - Green = Full Duplex |
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Yellow = Half Duplex |
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P |
19 |
P |
P |
22 |
S |
P |
S |
P |
S |
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1 |
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P |
S |
Power/Self test |
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6 |
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Module 2 |
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3C17203 SuperStack© 3 |
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10BASE-T / 100BASE-TX |
Unit LEDs |
Module LEDs |
RJ-45 Ports |
(Packet and Status) |
Figure 3 Switch 4400 PWR — front view
16 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400
Figure 4 Switch 4400 (48-port) — 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/ The Switch 4400, 4400 SE and 4400 PWR have 24 or 48
The 4400 PWR will supply up to 15.4W of power through any of the 24 front panel ports in conformance to the 802.3af specification. The Switch 4400 PWR incorporates a LED Mode Button on the front panel, which when pressed changes the mode of the front panel port LEDs functionality between Switch and Power mode.
100BASE-FX Ports The Switch 4400 FX has 24 100BASE-FX MT-RJ ports. These are
100 Mbps fiber-optic ports that can use standard multi-mode fiber-optic cable of up to 2 kilometers (1.2 miles). They use the standard MT-RJ
Switch 4400 — Front View Detail 17
connector that allows both the transmit and the receive fibers to be connected in the same space as an RJ-45 port.
Table 4 LED behavior
LED |
Color |
Indicates |
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Power/Self Test LED |
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Green |
The Switch is powered-up and operating normally. |
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Green flashing |
The Switch is either downloading software or is initializing |
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(which includes running a Power On Self Test). |
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Yellow |
The Switch has failed its Power On Self Test |
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or |
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A port has failed and has been automatically disabled. You |
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can verify this by checking that the Port Status LED is quickly |
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flashing Yellow. If a port fails the Switch passes its Power On |
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Self Test and continues to operate normally. |
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Off |
The Switch is not receiving power or there is a fault with the |
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Power Supply Unit. |
Port LEDs |
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Packet |
Green |
Full duplex packets are being transmitted/received on the |
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port. |
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Yellow |
Half duplex packets are being transmitted/received on the |
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port. |
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Off |
No packets are being transmitted/received on the port. |
Status |
Green |
A high speed (100 Mbps) link is present, and the port is |
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enabled. |
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Green flashing |
A high speed (100 Mbps) link is present, but the port is |
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disabled. |
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Yellow |
A low speed (10 Mbps) link is present, and the port is |
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enabled (not 4400 FX). |
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Yellow flashing |
A low speed (10 Mbps) link is present, but the port is |
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disabled (not 4400 FX). |
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Yellow flashing |
The port has failed and has been automatically disabled. The |
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(fast) |
Switch passes its Power On Self Test and continues to |
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operate normally even if one or more ports are disabled. |
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Off |
No link is present. |
18 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400
LED Color |
Indicates |
Port LEDs — Power over Ethernet mode (3C17205 only)
Packet |
Green |
Power is being delivered to the port. |
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Green flashing |
Exceeded port power limit (overCurrent MIB state) or unable |
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to supply power due to unit over budget (denyLowPriority |
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MIB state). |
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Yellow |
Power over Ethernet error, no power supplied on port. |
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Off |
No power is being delivered. |
Status |
Yellow flashing |
Power over Ethernet POST error on port. Flash rate is 4 Hz |
Module LEDs |
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Packet |
Refer to the user documentation accompanying the module, |
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if installed. |
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Status |
Refer to the user documentation accompanying the module, |
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if installed. |
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Off |
There is no module installed in the expansion module slot. |
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Yellow flashing |
The module has failed and has been automatically disabled. |
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(fast) |
The Switch passes its Power On Self Test and continues to |
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operate normally even if one or more modules are disabled. |
Unit LEDs |
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1–8 |
Green |
When the Switch forms a stack with other Switch 4400 |
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units, the LED indicates the position of the unit in the stack |
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and that a link is present. |
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When the Switch is stand-alone and not part of a stack, LED |
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1 is on. |
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Green/Yellow |
When a software upgrade is in progress, the LEDs of the unit |
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rotational |
that is being upgraded ‘rotate’ in an clockwise and |
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anti-clockwise sequence. |
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Green |
The Switch physically forms a stack with other Switch 4400 |
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flashing |
units, but cannot be managed as part of that stack until all |
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units have been upgraded to software version 2.0 or later. |
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Off |
A fault has occurred. |
Port LED Status LED (3C17205 only) |
||
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Green |
Port LEDs are operating in power mode |
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Yellow flashing |
Port LEDs are operating in normal mode. One or more ports |
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has a Power over Ethernet error. |
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Off |
Port LEDs are operating in normal mode. |
Power Utilization LEDs (3C17205 only)
Green |
4 LEDs showing total power being delivered as a percentage |
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of maximum possible. |
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Switch 4400 — Rear View Detail 19
Switch 4400 — Rear Figure 5 Switch 4400 (all models) — rear view
View Detail
Redundant Power To protect against internal power supply failure, you can use this socket System Socket to connect a Switch 4400 to a SuperStack 3 Advanced Redundant Power
System (RPS). See “Connecting a Redundant Power System” on page 30.
Expansion Module You can use these slots to install Expansion Modules. These allow the Slots Switch to support various forms of connection and add extra functionality
to your Switch. For example you can install a Cascade module to enable the Switch to be stacked with other Switches. Please note that Power over Ethernet is not supported on expansion modules on the Switch 4400 PWR (3C17205). Contact your supplier for more information.
WARNING: When an Expansion Module is not installed, ensure the blanking plate is fitted by tightening all screws with a suitable tool.
20 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400
Table 5 Default Settings
Feature |
Switch 4400 |
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Automatic IP Configuration |
Enabled |
Port Status |
Enabled |
Port Speed |
10/100 Mbps ports are auto-negotiated |
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MT-RJ ports (3C17210) are fixed at 100 Mbps |
Duplex Mode |
All fixed 10BASE-T and 100BASE-TX ports are |
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auto-negotiated |
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100BASE-FX ports default to full-duplex mode |
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(100 FD) and must be manually set to half-duplex |
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mode (100 HD) if required. |
Power over Ethernet |
Enabled (3C17205 only) |
Flow Control |
■ Enabled in half-duplex mode |
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■ Auto-negotiated in full-duplex mode |
Broadcast Storm Control |
Enabled |
Virtual LANs (VLANs) |
All ports belong to the untagged Default VLAN |
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(VLAN 1) with IEEE Std 802.1Q-1998 learning |
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operational |
Management VLAN |
VLAN 1 |
Trust IP |
Disabled |
Link Aggregation Control |
Disabled per port |
Protocol (LACP) |
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IP Multicast Filtering |
Filtering enabled |
Rapid Spanning Tree Protocol |
Enabled |
Fast Start |
■ Enabled on front panel ports |
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■ Disabled on rear panel port |
RMON Alarm |
Enabled |
Smart Auto-Sensing |
Enabled |
Webcache Support |
Disabled |
Traffic Prioritization |
All ports prioritize NBX VoIP traffic (LAN and IP). |
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All ports set to “best effort” for all other traffic. |
Port Security |
Disabled per port |
Configuration Save and |
Disabled |
Restore |
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Default Settings 21
To make SSH, Webcache redirection, RADIUS (including 802.1x Network Login), Auto VLAN assignment, and Traffic Prioritization available on the SuperStack 3 Switch 4400 SE, upgrade the product to the Switch 4400 SE Enhanced Software Upgrade (3C17207).
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 Router
22 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400
2 |
INSTALLING THE SWITCH |
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This chapter contains the information you need to install and set up the Switch 4400. It covers the following topics:
■Package Contents
■Choosing a Suitable Site
■Rack-mounting
■Placing Units On Top of Each Other
■Stacking Units
■The Power-up Sequence
WARNING: Safety Information. Before installing or removing any components from the Switch 4400 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 4400 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 4400 entfernen oder dem Switch 4400 hinzufuegen oder Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen, die in Appendix A (Anhang A) in diesem Handbuch aufgefuehrt sind.
24 CHAPTER 2: INSTALLING THE SWITCH
Package Contents |
■ |
Switch unit |
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■ CD-ROM (includes documentation related to your Switch) |
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■ Getting Started Guide (this guide) |
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■ Management Quick Reference Guide |
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■ |
Release Notes |
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■ |
Unit Information Labels |
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■ |
Warranty Information |
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■ |
Power Cord |
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■ 2 x Mounting brackets |
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■ |
4 x Screws |
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■ 4 x Rubber feet |
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Choosing a Suitable |
The Switch is suited for use on a desktop, either free standing or |
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Site |
mounted in a standard 19-inch equipment rack. Alternatively, the Switch |
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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 25
■ The air is as free from dust as possible.
■ The unit is installed in a clean, air conditioned environment.
■ No more than eight Switch units are placed on top of one another, if the units are free-standing.
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■ The Switch is situated away from sources of conductive (electrical) |
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dust, for example laser printers. |
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■ The AC supply used by the Switch is separate to that used by units |
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that generate high levels of AC noise, for example air conditioning |
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units and laser printers. |
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Rack-mounting |
The Switch 4400 is 1U high and will fit in most standard 19-inch racks. |
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CAUTION: Disconnect all cables from the Switch before continuing. |
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Remove all self adhesive pads from the underside of the Switch if they |
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have been fitted. |
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To rack-mount your Switch: |
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1 Place the Switch the right way up on a hard flat surface, with the front |
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facing towards you. |
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2 Locate a mounting bracket over the mounting holes on one side of the |
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Switch, as shown in Figure 6. |
26 CHAPTER 2: INSTALLING THE SWITCH
Figure 6 Fitting a bracket for rack-mounting
3Insert 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.
4Repeat steps 2 and 3 for the other side of the Switch.
5Insert the Switch into the 19-inch rack and secure with suitable screws (not provided). Ensure that ventilation holes are not obstructed.
6Connect network cabling.
7Finally 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 |
If the Switch units are free-standing, up to eight units can be placed one |
Top of Each Other |
on top of the other. If you are mixing a variety of SuperStack® 3 Switch |
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and Hub units, the smaller units must be positioned at the top. |
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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 |
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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 |
Switch 4400 units can be stacked together and then treated as a single |
|
manageable unit with one IP address. Any combination of 24-port and |
|
48-port units is allowed in a single stack. |
|
The SuperStack 3 Switch 4400 SE can only be stacked with non-SE |
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Switches if it has been upgraded using the Switch 4400 SE Enhanced |
|
Software Upgrade (3C17207). An upgraded Switch 4400 SE cannot be |
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stacked with a normal Switch 4400 SE. |
How To Stack Units |
To stack two Switch 4400 units you will need to order the SuperStack 3 |
|
Switch Cascade Stacking Kit (3C17227). The kit consists of two Cascade |
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Modules and a Cascade Cable. Both Switches must have an unused |
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expansion slot to allow a Cascade Module to be fitted. |
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Figure 7 Stacking two Switch 4400 units |
Module 2
3C17224 |
UP |
SuperStack 3 |
Cascade |
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Module |
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Module 2
3C17224 |
DOWN |
SuperStack 3 |
Cascade |
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Module |
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Switch 2
Switch 1
To stack more than two Switch units you will need to order one SuperStack 3 Cascade Extender Kit (3C17228) for each additional unit. This Kit consists of one Cascade Module, one Cascade Cable and one