Brocade 6520 Hardware Reference Manual
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53-1002705-01
POST and boot specifications
3
DRAFT: BROCADE CONFIDENTIAL
POST and boot specifications
When the switch is turned on or rebooted, the switch performs POST. Total boot time with POST can
be several minutes. POST can be omitted after subsequent reboots by using the fastboot command
or entering the diagDisablePost command to persistently disable POST.
For more information about these commands, refer to the
Fabric OS Command Reference Manual
.
POST
The success or failure results of the diagnostic tests that run during POST can be monitored
through LED activity, the error log, or the command line interface.
POST includes the following tasks:
1. Conducts preliminary POST diagnostics.
2. Initializes the operating system.
3. Initializes hardware.
4. Runs diagnostic tests on several functions, including circuitry, port functionality, memory,
statistics counters, and serialization.
Boot
In addition to POST, boot includes the following tasks after POST is complete:
1. Performs universal port configuration.
2. Initializes links.
3. Analyzes fabric. If any ports are connected to other switches, the switch participates in a fabric
configuration.
4. Obtains a domain ID and assigns port addresses.
Fan assembly
status (one
bi-color LED)
No light
Fan assembly is not receiving
power.
Verify that the fan FRU is seated
correctly.
Steady green
Fan assembly is operating
normally.
No action required.
Steady amber (for
more than 5
seconds)
Fan fault for one of the following
reasons:
•
A fan assembly with
mismatched airflow is
present.
•
One or more of the fans in
the fan assembly has
failed.
•
The fan FRU was disabled
by the user.
Try one of the following:
•
Replace the mismatched fan
assembly with one that has the
correct airflow direction.
•
Replace the faulty fan assembly.
•
Re-enable the fan assembly
TABLE 4
Non-port side LED patterns during normal operation (Continued)
LED name
LED color
Status of hardware
Recommended action
