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4250T, 4228G, 4226T manual Problem Solving
Models:
4250T
4226T
4228G
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Install
Manual IP Configuration
Problem Solving
Setting UP for Management
Command Line
Default Users
Rmon Alarm
Safety
Power/Self Test LED
Services
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HAPTER
4: P
ROBLEM
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OLVING
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Contents
SuperStack
3Com Corporation 350 Campus Drive Marlborough, MA
United States Government Legend
Contents
Setting UP for Management
Safety Information
PIN -OUTS
Page
About this Guide
Icon Description
Conventions
Convention Description
Related
Documentation
About this Guide
Introducing
About the Switch
Family
Switch 4200 Family
Front View Detail
Introducing the Superstack 3 Switch 4200 Series
Color Indicates Port Status LEDs 10BASE-T/100BASE-TX ports
Fiber GBICs
1000BASE-T GBICs
Port Status LEDs Gbic ports
Unit LEDs
Power/Self Test LED
Color Indicates
Alert LED
System RPS. See Connecting a Redundant Power System on
Rear View Detail
Rmon Alarm
Feature Switch 4200 Family Automatic IP Configuration
Duplex Mode
Quality of Service QoS
Installing the Switch
Choosing a Suitable
Package Contents
Site
Rack-mounting
Repeat steps 2 and 3 for the other side of the Switch
Fitting a bracket for rack-mounting
Top of Each Other
Placing Units On
Stacking Units
Switch 4200 Family
Power-up
Powering-up
Sequence
Power/Self Test LED colors
Color State
Fiber cables
Cross-over Cable Straight-through Cable
Approved Gbic The 3Com approved Gbic transceivers are
Transceivers
Installing the Switch
Gbic
Installing the Switch
Setting UP for Management
Automatically configured IP information
Setting Up
Configure IP information manually for your Switch or view
Overview
Manual IP Configuration
Automatic IP Configuration
Setting UP for Management
Manually Configuring IP Information
Pre-requisites
Configuring the Workstation with IP Information
Connecting the Workstation to the Switch
Setting Up the Switch with IP Information
Using Command Line Interface via Telnet
Example top-level command line interface menu
Connecting a workstation to the Switch via the console port
Setting Up the Switch with IP Information
Example top-level command line interface menu
Viewing
Configured IP
Automatically
Viewing Automatically Configured IP Information
Example top-level command line interface menu
Viewing IP Information via the Console Port
Methods of Managing a Switch
Refer to Setting Up Command Line Interface Management on
Interface Management
Command Line
Network Using Telnet
CLI Management via
Interface
Setting Up Web
Choosing a Browser
Over the Network
Setting Up Snmp
Management Protocol Snmp can manage a Switch if
Management workstation
Default Users
User Default Name Password Access Level
Security Device User Modify operation on the web interface
Setting UP for Management
Problem Solving
For Technical Support information, see Appendix D
Power LED does not light
Solving Problems
Solutions below
On powering-up, the Power/Self Test LED lights yellow
Solving Hardware Snmp fan fail trap hardware failure
Problems
Solving Communication Problems
IP Addressing
Formation
Solving Stack
How do you obtain a registered IP Address?
Solving Software Upgrade Problems
Problem Solving
Safety Information
Important Safety Information
This must be approved for the country where it is used
Important Safety Information
’information de Sécurité Importante
Schko
Wichtige Sicherheitsinformationen
Vorsicht Europe
Appendix a Safety Information
Pin to RS-232 25-pin
Null Modem Cable
PC-AT Serial Cable
Pin to 9-pin
Assignments
Modem Cable
RJ-45 Pin
Pin Number 10/100 1000
Pin Number 10/100 1000
Appendix B PIN-OUTS
Switch 4226T 3C17300
Protocols Used for Administration
Terminal Emulation
Switch 4250T 3C17302
Switch 4228G 3C17304
Product
Services
Register Your
Purchase
Online
Access Software
Troubleshoot
Downloads
Contact Us
Country Telephone Number
Latin America Telephone Technical Support and Repair
800 876
Appendix D Obtaining Support for Your Product
Index
Numbers
Index
Regulatory Notices