the leds on the front panel provide troubleshooting information about the switch. they show failures in the power-on self-test (post), port-connectivity problems, and overall switch performance. for a full description of the switch leds, see the “leds”.

    you can also get statistics from the browser interface, from the command-line interface (cli), or from a simple network management protocol (snmp) workstation. see the software configuration guide, the switch command reference guide on cisco.com, or the documentation that came with your snmp application for details.

    this chapter describes these topics for troubleshooting problems:

    1 understanding post results

    2 diagnosing problems