Cisco WS-C2950-12 Hardware Installation Manual page 99

Chapter 3 Troubleshooting
Table 3-1 Common Problems and Solutions (continued)
Symptom
System LED is amber
Switch placed in
error-disabled state after
GBIC module is inserted
78-11157-03
Possible Cause
Internal fan fault detected.
•
• Nonfatal or fatal POST error
detected.
Bad or non-Cisco-approved GBIC
module.
Catalyst 2950 Desktop Switch Hardware Installation Guide
Diagnosing Problems
Resolution
Check if the fan has failed
•
by using the show env fan
privileged EXEC command.
If the fan has failed, call
Cisco Systems.
• Use the show post
privileged EXEC command
to see which POST test
failed.
Remove GBIC module from the
switch, and replace it with a
Cisco-approved module. Use the
errdisable recovery cause
gbic-invalid global
configuration command to
verify port status, and enter a
time interval to recover from the
error-disable state.
Refer to the switch software
configuration guide for
information about the
errdisable recovery command.
3-5