User's Manual

328 Troubleshooting and Recovery
Troubleshooting a Non-responsive CMC
NOTE: It is not possible to log in to the standby CMC using a serial console.
If you cannot log in to the CMC using any of the interfaces (the Web
interface, Telnet, SSH, remote RACADM, or serial), you can verify the CMC
functionality by observing the LEDs on the CMC, obtaining recovery
information using the DB-9 serial port, or recovering the CMC firmware
image.
Observing the LEDs to Isolate the Problem
Facing the front of the CMC as it is installed in the chassis, you will see two
LEDs on the left side of the card.
Top LED — The top green LED indicates power. If it is NOT on:
1
Verify that you have AC present to at least one power supply.
2 Verify that the CMC card is seated properly. You can release/pull on the
ejector handle, remove the CMC, reinstall the CMC making sure the
board is inserted all the way and the latch closes correctly.
Bottom LED — The bottom LED is multi-colored. When the CMC is active
and running, and there are no problems, the bottom LED is blue. If it is
amber, a fault was detected. The fault could be caused by any of the following
three events:
PSU (Oval) Green, glowing steadily AC OK
(Oval) Green, blinking Not used
(Oval) Green, dark AC Not OK
Amber, glowing steadily Not used
Amber, blinking Fault
Amber, dark No fault
(Circle) Green, glowing
steadily
DC OK
(Circle) Green, dark DC Not OK
Table 11-14. LED Color and Blinking Patterns (continued)
Component LED Color, Blinking Pattern Meaning