25
Troubleshooting hardware
This section provides troubleshooting information for common hardware issues.
NOTE:
This section describes how to troubleshoot MPUs, service modules, power modules, and fan trays.
To troubleshoot transceiver modules, ports, and temperature alarms, see "
Troubleshooting system
management
" and "
Troubleshooting ports
."
MPU reboot failure
Symptom
An MPU fails to reboot.
Troubleshooting flowchart
Figure 1 Troubleshooting MPU reboot failure
Solution
To resolve the issue:
1.
Verify that the system software image on the MPU is correct.
Contact the support
MPU reboot failure
No
Yes
No
Yes
No
Yes
Yes
No
Error continues
to be reported?
Resolved?
Yes
Yes
No
No
Reinstall the MPU
securely
MPU memory
runs correctly?
System software
image correct
Replace the MPU
Reload the system
software image
Resolved?
Resolved?
End
