Users Guide

– A self-test failure. In this case, the CMC board must be replaced.
– An image corruption. In this case, upload the CMC rmware 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 conguration, only the upper-right 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 a CMC system and a client system.
2 Open a terminal emulator of your choice (such as HyperTerminal or Minicom). Enter the following specication when prompted: 8 bits,
no parity, no ow control, baud rate 115200.
3 Press the <Enter> key.
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, complete tasks in Recovering Firmware Image.
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 ash devices by uploading the rmware update le, vrtx_cmc.bin. This is the same rmware image le used
for normal rmware 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 Network Problems
The integrated CMC trace log allows you to debug CMC alerts and networking. You can access the trace log using the CMC Web interface
or RACADM. See the gettracelog command section in the Chassis Management Controller for PowerEdge VRTX RACADM Command
Line Reference Guide.
The trace log tracks the following information:
222
Troubleshooting and Recovery