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3Com 3CR17561-91-US Getting Started Guide - Page 67

Problem Solving

UPC - 662705496238

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5 PROBLEM SOLVING This chapter helps you to diagnose and solve problems you may have with the operation of your Switch. There is also an explanation of IP addressing and upgrading software. The topics covered are: ■ Solving Problems Indicated by LEDs ■ Solving Hardware Problems ■ Solving Communication Problems ■ Solving Stack Formation Problems If you experience a problem that is not listed here, it may be included in the Support section of the SuperStack 4 Switch 4500 Command Reference Guide on the CD-ROM that accompanies your Switch. For Technical Support information, see Appendix D.

Section	Page
Switch 4500 Family Getting Started Guide	1
Contents	3
About This Guide	9
Before You Start	9
Release Notes	9
About Your CD-ROM	10
Conventions	10
Related Documentation	11
Accessing Online Documentation	12
Documentation Comments	12
Introducing the Switch 4500 Family	13
About the Switch 4500	14
Summary of Hardware Features	15
Switch 4500 - Front View Detail	15
10BASE-T/ 100BASE-TX Ports	17
Gigabit Ports	17
Console Port	17
Unit LED	18
LEDs	18
Switch 4500 - Rear View Detail	20
Power Socket	20
Open Book Warning Labels	20
Redundant Power System Socket	21
Default Settings	21
Installing the Switch	23
Package Contents	24
Choosing a Suitable Site	25
Rack-mounting	26
Rack Mounting the Back of your Switch 4500 (PWR only)	27
Connecting a Redundant Power Supply to your Switch 4500 PWR	28
Specifying the Redundant Power System	30
Connecting the Switch to the Redundant Power System	31
Connecting the Earthing Cable	33
RPS LED	33
Using Power over Ethernet	33
Placing Units On Top of Each Other	34
The Power-up Sequence	35
Powering-up the Switch 4500	35
Checking for Correct Operation of LEDs	35
Choosing the Correct Cables	35
Choosing the Correct Cables for the 1000BASE-X SFP Ports	37
SFP Operation	38
Approved SFP Transceivers	38
Inserting an SFP Transceiver	39
Removing an SFP Transceiver	40
Packing and Shipping the Switch 4500	40
Setting Up for Management	41
Methods of Managing a Switch	42
Command Line Interface Management	42
Command Line Interface Management using SSH	43
Web Interface Management	43
SNMP Management	43
Setting Up Overview	44
IP Configuration	45
Preparing for Management	46
Manually Configuring IP Information	47
Connecting to the Console Port	47
Connecting to a Front Panel Port	50
Viewing Automatically Configured IP Information	53
Using 3Com Network Director	54
Connecting to the Console Port	54
Setting Up Command Line Interface Management	56
User Interface Overview	56
CLI Management via the Console Port	56
CLI Management over the Network	56
Setting Up Command Line Interface Management using SSH	57
Setting Up Web Interface Management	58
Pre-requisites	58
Web Management Over the Network	59
Setting Up SNMP Management V1 or V2	59
Pre-requisites	60
Default Users and Passwords	60
Creating a Stack	63
How To Interconnect Units	63
Guidelines For Interconnecting Units	64
Unit Numbering within the Stack	65
Problem Solving	67
Solving Problems Indicated by LEDs	68
Solving Hardware Problems	69
Solving Communication Problems	71
Solving Stack Formation Problems	73
Upgrading Software	75
The Contents of the Executable File	76
Upgrading from the Command Line Interface	76
Introduction	76
Backup	78
TFTP	78
FTP (via a network port)	80
XModem (via the console cable)	81
Upgrading from the Bootrom Interface	82
Introduction	82
TFTP	84
FTP	84
XModem	85
Bootrom Upgrade	86
Bootrom Upgrade via TFTP	87
Bootrom Upgrade via FTP	87
Bootrom Upgrade via XModem	88
Safety Information	91
Power Cord Set - Japan	92
Important Safety Information	92
L’information de Sécurité Importante	95
Wichtige Sicherheitsinformationen	99
Información de Seguridad Importante	102
Importanti Informazioni di Sicurezza	105
Wa¿ne informacje o zabezpieczeniach	108
Pin-outs	111
Null Modem Cable	111
PC-AT Serial Cable	111
Modem Cable	112
Ethernet Port RJ-45 Pin Assignments	112
Technical Specifications	115
Switch 4500 (26 Port)	115
Switch 4500 (50 Port)	116
Switch 4500 PWR (26 Port)	117
Switch 4500 PWR (50 Port)	118
RPS	119
Earthing Lead	119
Obtaining Support for your Product	121
Register Your Product	121
Purchase Value-Added Services	121
Troubleshoot Online	122
Access Software Downloads	122
Telephone Technical Support and Repair	122
Contact Us	123
Index	125