Chapter 3 Troubleshooting
Diagnosing Common Problems
Table
Symptom | Possible Cause | Resolution |
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|
|
System LED is amber, | Corrupted software. | Attach a monitor to the serial port to display |
and all port LEDs are |
| the switch boot loader. |
off. |
|
|
|
| For more information, see the switch |
|
| software configuration guide. |
|
|
|
System LED is amber. | Nonfatal or fatal POST | Use the show post privileged EXEC |
| error detected. | command to see which POST test failed. |
|
| POST failures are usually fatal. Contact |
|
| your Cisco representative if your switch |
|
| does not pass POST. |
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|
Catalyst 2940 Switch Hardware Installation Guide
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