Chapter 27 Troubleshooting; Using Recovery Procedures - Cisco WS-C3550-12G Software Configuration Manual

Troubleshooting
This chapter describes how to identify and resolve software problems related to the IOS software.
Depending on the nature of the problem, you can use the command-line interface (CLI) or the Cluster
Management Suite (CMS) to identify and solve problems.
For complete syntax and usage information for the commands used in this chapter, refer to the
Note
Catalyst 3550 Multilayer Switch Command Reference for this release and the Cisco IOS Command
Summary for Release 12.1.
This chapter consists of these sections:
• Using Recovery Procedures, page 27-1
• Preventing Autonegotiation Mismatches, page 27-10
Diagnosing Connectivity Problems, page 27-11
•
Using Debug Commands, page 27-14
•
Using the show forward Command, page 27-15
•
Using the crashinfo File, page 27-17
•

Using Recovery Procedures

These recovery procedures require that you have physical access to the switch:
Recovering from Corrupted Software, page 27-2
•
Recovering from a Lost or Forgotten Password, page 27-3
•
Recovering from a Command Switch Failure, page 27-7
•
Recovering from Lost Member Connectivity, page 27-10
•
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