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EMC Connectrix B Series v6.2 ED-DCX-4S-B Hardware Reference Manual
Diagnostics and Troubleshooting
Interpreting POST and boot results
The ED-DCX-4S-B performs Power On Self Test (POST) by default
each time the chassis is powered on, rebooted, or reset. The
ED-DCX-4S-B can be rebooted using the reboot (to reboot each CP
individually) or fastBoot commands. The fastBoot command reboots
the switches without running POST. If the active CP blade is
rebooted, it fails over to the standby CP blade.
POST
To verify that POST has completed without error:
◆ Verify that all LEDs return to a normal state after POST completes
(Chapter 4, “Monitor System Components.”)
If one or more LEDs do not return to a normal state, and this is
not due to the ED-DCX-4S-B being set to beacon, refer to the
relevant LED table to identify and correct the problem. For port
blades and CP and core switch blades, the slotShow command
can be used to check the status of the slots. For information about
turning beaconing on/off, refer to the EMC Connectrix B Series
Fabric OS Administrator’s Guide.
◆ Verify that the switch prompt displays when POST completes.
If it does not display, POST was not successfully completed.
Contact the ED-DCX-4S-B supplier for support.
◆ Review the system error log using the errShow or errDump
commands.
Any errors detected during POST are written to the system log,
which is accessible through the errShow command. For
information about error messages, refer to the EMC Connectrix B
Series Fabric OS Message Reference.
POST includes the following steps:
1. Preliminary POST diagnostics are run.
2. Operating system is initialized.
3. Hardware is initialized.
4. Diagnostic tests are run on several functions, including circuitry,
port functionality, ability to send and receive frames, all aspects of
memory, parity, statistics counters, and serialization.
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