Troubleshooting; Understanding Post Results - Cisco Catalyst WS-C2924-XL Hardware Installation Manual

Troubleshooting

The LEDs on the front panel of the Catalyst 2900 series XL switch 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
You can also get statistics from the browser interface, from the command-line
interface (CLI), or from an SNMP workstation. See the Catalyst 2900 Series XL
and Catalyst 3500 Series XL Software Configuration Guide, the Catalyst 2900
Series XL and Catalyst 3500 Series XL Command Reference, or the
documentation that came with your SNMP application for details.
This chapter describes these topics for troubleshooting problems:

Understanding POST Results

Each time the switch is powered on, eight POSTs run automatically to check the
most important system components before the switch begins forwarding packets.
When the switch begins its POST, the port status LEDs turn amber for 2 seconds,
and then they turn green. As each test runs, the port status LEDs turn off, starting
with number 1x. The port status LEDs for ports 2x to 8x each turn off in turn as
the system completes a test.
78-6461-04
Understanding POST Results
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Diagnosing Problems
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C H A P T E R
Catalyst 2900 Series XL Hardware Installation Guide
"LEDs" section on page
3
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