Users Guide

○ Verify that you have AC present to at least one power supply.
○ Verify that the CMC card is seated properly. You can release or pull the ejector handle, remove the CMC, reinstall the
CMC making sure that the board is inserted all the way and the latch closes correctly.
● Bottom LED — The bottom LED is multi-colored. When CMC is active and running, and there are no problems, the bottom
LED is blue. If it is amber, a fault is detected. The fault may be caused by any of the following three events:
○ A core failure. In this case, the CMC board must be replaced.
○ A self-test failure. In this case, the CMC board must be replaced.
○ An image corruption. In this case, upload the CMC firmware image to recover the CMC.
NOTE: A normal CMC boot or reset takes over a minute to fully boot into its operating system and be available for login.
The blue LED is enabled on the active CMC. In a redundant, two-CMC configuration, only the top green LED is enabled
on the standby CMC.
Obtain Recovery Information From DB-9 Serial Port
If the bottom LED is amber, recovery information is available from the DB-9 serial port located on the front of CMC.
To obtain recovery information:
1. Install a NULL modem cable between the CMC and a client machine.
2. Open a terminal emulator of your choice (such as HyperTerminal or Minicom). Set up 8 bits, no parity, no flow control, and
baud rate 115200.
A core memory failure displays an error message every 5 seconds.
3. Press <Enter>.
If a recovery prompt appears, additional information is available. The prompt indicates the CMC slot number and failure type.
To display failure reason and syntax for a few commands, type recover and then press <Enter>.
Sample prompts:
recover1[self test] CMC 1 self test failure
recover2[Bad FW images] CMC2 has corrupted images
● If the prompt indicates a self test failure, there are no serviceable components on CMC. CMC is bad and must be
returned to Dell.
● If the prompt indicates Bad FW Images, then follow the steps in Recovering Firmware Image to fix the problem.
Recovering Firmware Image
CMC enters recover mode when a normal CMC operating boot is not possible. In recover mode, a small subset of commands are
available that allow you to reprogram the flash devices by uploading the firmware update file, firmimg.cmc. This is the same
firmware image file used for normal firmware updates. The recovery process displays its current activity and boots to the CMC
OS upon completion.
When you type recover and then press <Enter> at the recovery prompt, the recover reason and available sub-commands
display. An example recover sequence may be:
recover getniccfg
recover setniccfg 192.168.0.120 255.255.255.0
192.168.0.1
recover ping 192.168.0.100
recover fwupdate -g -a 192.168.0.100
NOTE: Connect the network cable to the left most RJ45.
NOTE: In recover mode, you cannot ping CMC normally because there is no active network stack. The recover ping
<TFTP server IP> command allows you to ping to the TFTP server to verify the LAN connection. You may need to use
the recover reset command after setniccfg on some systems.
Troubleshooting and Recovery 223