CHAPTER
35-1
Catalyst 3560 Switch Software Configuration Guide
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35
Troubleshooting
This chapter describes how to identify and resolve software problems related to the Cisco IOS software
on the Catalyst 3560 switch. 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.
Additional troubleshooting information, such as LED descriptions, is provided in the hardware
installation guide.
Note For complete syntax and usage information for the commands used in this chapter, refer to the command
reference for this release and the Cisco IOS Command Summary for Release 12.1.
This chapter consists of these sections:
• Recovering from Corrupted Software By Using the XMODEM Protocol, page 35-2
• Recovering from a Lost or Forgotten Password, page 35-4
• Recovering from a Command Switch Failure, page 35-8
• Recovering from Lost Cluster Member Connectivity, page 35-11
Note Recovery procedures require that you have physical access to the switch.
• Preventing Autonegotiation Mismatches, page 35-12
• Troubleshooting Power over Ethernet Switch Ports, page 35-12
• SFP Module Security and Identification, page 35-12
• Using Ping, page 35-13
• Using Layer 2 Traceroute, page 35-14
• Using IP Traceroute, page 35-16
• Using Debug Commands, page 35-18
• Using the show platform forward Command, page 35-19
• Using the crashinfo File, page 35-22
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