3COM 3C16701A User Manual
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OfficeConnect®

Ethernet Hub 4, 4C, 8, 8C

User Guide (3C16704A, 3C16703A, 3C16700A, 3C16701A)

3Com Corporation 5400 Bayfront PlazaSanta Clara, California95052-8145

Copyright © 1999, 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 DFAR252.227-7015(Nov 1995) or FAR52.227-14(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 OfficeConnect are registered trademarks of 3Com Corporation.

Microsoft, MS-DOS,Windows, and Windows NT are registered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of Novell, Inc.

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

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

Environmental Statement: Please recycle this user guide after use.

Please e-mailany comments about this document to 3Com at:pddtechpubs_comments@3Com.com. Please include the document title (OfficeConnect Ethernet Hub 4, Hub 4C, Hub 8, Hub 8C), part number(DUA1670-0AAA04)and, if appropriate, the page number.

Introduction 5

Creating your Network 6

What Else Do I Need? 6 Workstation Connections 6 Transceiver Connections 6 Hub Connections 7 10BASE-27

10BASE-T7

Twisted Pair (TP) Cables 7 Stacking the Units Together 8

The Rubber Feet 8

The Stacking Clip 8 Positioning Your Hub 9 Securing Your Hub 9 Using Your Hub 9

The OfficeConnect Ethernet Hub 4 and 4C 10

Ethernet Hub 4 and 4C—Front 10

Ethernet Hub 4 and 4C—Rear 11

Connecting Workstations and Other Equipment to Your Hub 12 Connecting Transceivers to the AUI Port 12

Connecting OfficeConnect Ethernet Hubs Together 12 Connecting Hubs Using 10BASE-2 13

Checking Connections 13 Connecting Hubs Using 10BASE-T 14 Checking Connections 14

Spot Checks 14

Problem Solving for the Hub 4 and 4C 15

The OfficeConnect Ethernet Hub 8 and 8C 17

Ethernet Hub 8 and 8C—Front17

Ethernet Hub 8 and 8C—Rear18

Connecting Workstations and Other Equipment to Your Hub 19 Connecting OfficeConnect Ethernet Hubs Together 19

Connecting Hubs Using 10BASE-220 Checking Connections 20 Connecting Hubs Using10BASE-T21 Checking Connections 21

Spot Checks 21

Problem Solving for the Hub 8 and 8C 22

Networking Terminology 24

Dimensions and Standards 25

Dimensions and Operating Conditions 25

Standards 25

Environmental Statements 26

End Of Life Statement 26 Regulated Materials Statement 26

Environmental Statement about the Documentation 26 Environmental Statement about the Product Packaging 26

Important Safety Information 27

Wichtige Sicherheitshinweise 28

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Consignes importantes de sécurité 29

Technical Support 30

Online Technical Services 30 World Wide Web Site 30

3Com Knowledgebase Web Services 30 Support from Your Network Supplier 31 Support from 3Com 31

Returning Products for Repair 34

3Com Corporation Limited Warranty 35

Electromagnetic Compatibility 38

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INTRODUCTION

Welcome to the world of networking with 3Com® . In the modern business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but, until recently, only large businesses could afford the advantage of networking. The OfficeConnect® product range from 3Com has changed this, bringing networks into the small office.

The OfficeConnect Ethernet Hub 4, OfficeConnect Ethernet Hub 4C, OfficeConnect Ethernet Hub 8 and OfficeConnect Ethernet Hub 8C, are ideal for creating small networks. They are compact and attractively designed for desktop use.

These four products are part of the OfficeConnect range which stack neatly together with the OfficeConnect stacking clip.

This user guide describes how to use the OfficeConnect hubs. The hubs have similar features and so this user guide contains general and specific information. When referring to all products, this guide uses the term ‘OfficeConnect hub’.

A single OfficeConnect hub allows you to create a small network with up to four or eight workstations, as shown in Figure 1. If you need to connect more workstations, simply use the stacking clip to connect another OfficeConnect hub to form a stack (each hub is a single repeater).

Figure 1 Small Network With OfficeConnect Hub and Optional Print Server

HP JetDirect

OfficeConnect

print server

OfficeConnect hub

The OfficeConnect hubs have the following ports:

The Ethernet Hub 4 has four 10BASE-Tports.

The Ethernet Hub 4C has four 10BASE-Tports, a10BASE-2port and an AUI port.

The Ethernet Hub 8 has eight 10BASE-Tports.

The Ethernet Hub 8C has eight 10BASE-Tports and a ninth10BASE-2port.

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