Troubleshooting - Cisco Catalyst 3560-X Software Configuration Manual

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Table of Contents

Troubleshooting

This chapter describes how to identify and resolve software problems related to the Cisco IOS software

on the Catalyst 3750-X or 3560-X switch. Depending on the nature of the problem, you can use the

command-line interface (CLI), the device manager, or Network Assistant to identify and solve problems.

Unless otherwise noted, the term switch refers to a Catalyst 3750-X or 3560-X standalone switch and to

a Catalyst 3750-X switch stack.

Additional troubleshooting information, such as LED descriptions, is provided in the hardware

installation guide.

For complete syntax and usage information for the commands used in this chapter, see the command

reference for this release and the Cisco IOS Command Summary, Release 12.4.

Recovering from a Software Failure, page 1-2

Recovering from a Lost or Forgotten Password, page 1-3

Preventing Switch Stack Problems, page 1-8

Recovering from a Command Switch Failure, page 1-9

Recovering from Lost Cluster Member Connectivity, page 1-12

Preventing Autonegotiation Mismatches, page 1-13

Troubleshooting Power over Ethernet Switch Ports, page 1-13

SFP Module Security and Identification, page 1-14

Monitoring SFP Module Status, page 1-14

Monitoring Temperature, page 1-15

Using Ping, page 1-15

Using Layer 2 Traceroute, page 1-16

Using IP Traceroute, page 1-18

Using TDR, page 1-19

Using Debug Commands, page 1-20

Recovery procedures require that you have physical access to the switch.

C H A P T E R

Catalyst 3750-X and 3560-X Switch Software Configuration Guide

Catalyst 3750-x