Chapter 5 Troubleshooting
Contacting the Cisco Technical Assistance Center
5-16
Catalyst 4500 Series Switches Installation Guide
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Some problems can be solved by resetting the supervisor engine. Use the
hw-module module <n> reset power-cycle command to reset a switching
module, or remove and re-insert the switching module, which resets, restarts and
power cycles the switching module. Pressing the reset button on the supervisor
engine causes the software to reload, but does not power cycle the supervisor
engine.
Note When you power-cycle or remove a supervisor engine in a redundant system the
other supervisor engine becomes the active supervisor and the ports retain
connectivity. In a non-redundant system, all of the switching modules lose
connectivity until the supervisor engine is reinserted and completely restarted.
The show diagnostics power-on command may provide useful information for
some supervisor engine problems.
Not all software versions support all supervisor engines. If you are having trouble
with a supervisor engine, refer to the software release notes to be sure that it is
supported by your software.
Contacting the Cisco Technical Assistance Center
If you are unable to solve a startup problem after using the troubleshooting
suggestions in this chapter, contact a Cisco TAC representative for assistance and
further instructions.
Before you call, have the following information ready to help the Cisco TAC assist
you as quickly as possible:
• Date you received the switch
• Chassis serial number (refer to Figure 5-3 to Figure 5-6 for serial number
locations)
• Type of software and release number
• Maintenance agreement or warranty information
• Brief description of the problem
• Brief explanation of the steps you have already taken to isolate and resolve
the problem
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