Cisco Systems 4500 manual Contacting the Cisco Technical Assistance Center

Chapter 5 Troubleshooting

Contacting the Cisco Technical Assistance Center

Some problems can be solved by resetting the supervisor engine. Use the hw-module module <n> reset power-cyclecommand 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-oncommand 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 5-3to Figure 5-6for 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

	Catalyst 4500 Series Switches Installation Guide
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