Dell PowerVault 50F (Fibre Channel Switch) - Manual (Page 60)

PowerVault™ 50F Commands: Dell™ PowerVault™ 50F 8-Port Fibre Channel Switch Installation and Troubleshooting Guide
file:///C|/Users/sharon_anand/Desktop/PowerVault/50f_enit/COMMANDS.HTM[3/15/2013 11:32:02 AM]
DIAG-CMEM, 1
Central Memory Error, bufline 0xXXXX offset 0xXXXX is 0xXXXX sb
Probable cause: Motherboard failure
Action: Replace the switch
DIAG-CMRS, 1
Central Memory Read Short, expected nn bytes, read nn bytes (Starting from
Bufline 0xxx, offset 0xxx)
Probable cause: Motherboard failure
Action: Replace the switch
DIAG-CMTO, 1
Central Memory Timeout, port 16 mem_ctl register bit 0 stuck high.
NOTE: Port 16 is the embedded port.
Probable cause: Motherboard failure
Action: Replace the switch
crossPortTest
This test is run in a Dell factory environment only.
portLoopbackTest
Figure 7-16 shows the portLoopbackTest command, which is used to validate the data path to the optical
interface and is intended to verify that the G_port or FL_Port interface card is error free. This is an internal
test and checks all of the switch's internal firmware and circuitry.
The command syntax is portLoopbackTest nFrames
This command may not be executed on an operational switch. Before issuing portLoopbackTest, disable
the switch using the switchDisable command
If you do not include the nFrames parameter, the loopback test runs continuously until you press <Enter>
again. If the test does not find an error, there is no output. You can choose to continue the test, view
statistics, or view an error log. Table 7-10 shows the loopback errors message fields.
While the test is running, all interface module front panel LEDs rapidly flicker green, indicating that the test is
finding no errors and is processing.
Figure 7-16. portLoopbackTest Command Example