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3Com 3CR16708-91 Getting Started Guide - Page 51

Problem Solving

UPC - 662705487151

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4 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. The topics covered are: ■ Solving Problems Indicated by LEDs ■ Solving Hardware Problems ■ Solving Communication Problems ■ Solving Software Upgrade Problems ■ Recovering from a Lost Password If you experience a problem that is not listed here, it may be included in the Support section of the Switch Management Interface Reference Guide on the CD-ROM that accompanies your Switch. For Technical Support information, see Appendix D.

Section	Page
About This Guide	7
Before You Start	7
About Your CD-ROM	7
Conventions	8
Related Documentation	9
Accessing Online Documentation	9
Documentation Comments	10
Introducing the OfficeConnect Managed Switch 9 and Switch 9 FX	11
About the Switch	12
Summary of Hardware Features	12
Switch - Front View Detail	13
LEDs	14
Switch - Rear View Detail	16
10BASE-T/ 100BASE-TX Ports	17
10BASE-T/ 100BASE-TX/ 1000BASE-T Port	17
SFP Port	17
100BASE-FX Port	18
Console Port	18
Power Socket	18
Default Settings	19
Installing the Switch	21
Package Contents	22
Choosing a Suitable Site	22
Placing Units On Top of Each Other	23
Using a Stacking Clip	23
Wall-mounting	24
Mounting Instructions for Cement Walls	24
Mounting Instructions for Wood Walls	25
The Power-up Sequence	25
Powering-up the Switch	25
Checking for Correct Operation of LEDs	26
Using Power over Ethernet	26
Choosing the Correct RJ-45 Cables	28
SFP Operation	29
Approved SFP Transceivers	29
Inserting an SFP Transceiver	29
Removing an SFP Transceiver	31
Setting Up for Management	33
Setting Up Overview	34
IP Configuration	35
Manual IP Configuration	35
Automatic IP Configuration	35
Preparing for Management	36
Manually Configuring IP Information	37
Connecting to the Console Port	37
Pre-requisites	37
Connecting the Workstation to the Switch	38
Setting Up the Switch with IP Information	39
Viewing Automatically Configured IP Information	40
Using 3Com Network Supervisor	40
Connecting to the Console Port	41
Pre-requisites	41
Connecting the Workstation to the Switch	41
Viewing IP Information via the Console Port	42
Methods of Managing a Switch	43
Command Line Interface Management	43
Web Interface Management	44
SNMP Management	44
Setting Up Command Line Interface Management	45
CLI Management via the Console Port	45
CLI Management over the Network	45
Setting Up Web Interface Management	46
Pre-requisites	46
Choosing a Browser	46
Web Management Over the Network	47
Setting Up SNMP Management	47
Pre-requisites	48
Default Users and Passwords	48
Changing Default Passwords	48
Problem Solving	51
Solving Problems Indicated by LEDs	52
The Power LED does not light	52
On powering-up, the Alert LED remains orange	52
A Port Status LED is flashing green/yellow	52
A link is connected and yet the Status LED for the port does not light	52
A PoE device is connected and yet the PoE Status LED does not light	53
Solving Hardware Problems	53
A device is connected to the Switch but power is not being supplied	53
Solving Communication Problems	54
IP Addressing	54
How do you obtain a registered IP Address?	54
Solving Software Upgrade Problems	55
Recovering from a Lost Password	55
Safety Information	57
Power Cord Set - Japan	58
Important Safety Information	58
L’information de Sécurité Importante	60
Wichtige Sicherheitsinformationen	62
Información de seguridad importante	63
Importanti Informazioni di Sicurezza	66
Pin-outs	69
RJ-45 to RS-232 Adapter Cable	69
RJ-45 Pin Assignments	70
Technical Specifications	71
OfficeConnect Managed Switch 9 and Switch 9 FX	71
Obtaining Support for your Product	73
Register Your Product	73
Purchase Value-Added Services	73
Troubleshoot Online	74
Access Software Downloads	74
Telephone Technical Support and Repair	74
Contact Us	75
Index	77