3Com 16985ua.bk 2, A, B, C D

2INSTALLING THE SWITCH

Choosing a Suitable Site 24

Rack-mounting 24

Placing Units On Top of Each Other 25

Stacking Units 26

Stacking Two Units 26

Stacking Up To Four Units 27

The Power-up Sequence 29

Connecting a Redundant Power System 29

Powering-up the Switch 3300 MM 29

Checking for Correct Operation 29

Choosing the Correct Cables 30

Solving Problems Indicated by LEDs 31

Managing the Switch 32

ASAFETY INFORMATION

Important Safety Information 34

L’information de Sécurité Importante 36

Wichtige Sicherheitsinformationen 38

BPIN-OUTS

Null Modem Cable 39

PC-AT Serial Cable 39

Modem Cable 40

RJ45 Pin Assignments 40

CTECHNICAL SPECIFICATIONS

DTECHNICAL SUPPORT

Online Technical Services 45

World Wide Web Site 45

3Com Knowledgebase Web Services 45

3Com FTP Site 46

Support from Your Network Supplier 46

Support from 3Com 46

Returning Products for Repair 48

16985ua.bk Page iv Thursday, September 7, 2000 9:15 AM

Contents

Main 3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 C ABOUT THIS GUIDE 1 2 A B C D Page Page A BOUT T HIS G Conventions Tab le 1 Notice Icons Tab le 2 Text Conventions Related Documentation Year 2000 Compliance Documentation Comments Product Registration 1 About the SuperStack 3 Switch 3300 MM Switch 3300 MM Front View Detail Tab le 3 LED behavior Switch 3300 MM Rear View Detail Page Network Configuration Examples 18 CHAPTER 1: INTRODUCING THE SWITCH 3300 MM Switch 3300 MM as a Collapsed Backbone Switch DualSpeed Hub 500 Switch1100 Switch1100/3300 Figure 4 Using the Switch as a collapsed backbone Page Page Configuration Rules with Full Duplex Page 2 Choosing a Suitable Site Rack-mounting Placing Units On Top of Each Other Stacking Units Page Page The Power-up Sequence Choosing the Correct Cables Solving Problems Indicated by LEDs contains a list of problems and suggested solutions. Tab le 5 Problems indicated by LEDs Managing the Switch A Important Safety Information Page Page Page Wichtige Sicherheitsinformat ionen B Null Modem Cable PC-AT Serial Cable Modem Cable RJ45 Pin Assignments connectors Tab le 6 Pin assignments Page C Page D Online Technical Services Support from Your Network Supplier Support from 3Com Support from 3Com 47 Here is a list of worldwide technical telephone support numbers: Europe, South Africa, and MiddleEast From the following countries, you may use the toll-freenumbers: (1 800 638 3266) Enterprise Customer s: 1 800 876-3266 Returning Products for Repair G Page Page Page Page Page I S T U W Y 3Com Corporation LIMITED WARRANTY SUPERSTACK 3 SWITCH 3300 MM HARDWARE: SOFTWARE: YEAR 2000 WARRANTY: INCLUDED SERVICES: WARRANTIES EXCLUSIVE: LIMITATION OF LIABILITY: DISCLAIMER: GOVERNING LAW: R EGULATORY N FCC S CSA S CE STATEMENT (EUROPE) VCCI S