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TABLE 2
LED name
Fan Status
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,
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
4. Obtains a domain ID and assigns port addresses.
PowerConnect B-8000 Hardware Reference Manual
53-1001788-01
Non-port side LED patterns during normal operation (Continued)
LED color
No light
Steady green
Steady amber (for
more than 5
seconds)
statistics counters, and serialization.
configuration.
POST and boot specifications
Status of hardware
Fan assembly is not receiving
power.
Fan assembly is operating
normally.
Fan fault for one of the following
reasons:
One or more of the fan(s) in the
fan assembly has failed
The fan FRU was disabled by the
user
Note: When the switch is first
powered on the fan status LED
will show amber until POST has
completed.
Recommended action
Try the following:
Verify the fan FRU is seated correctly.
Verify the switch is powered on.
No action required.
Try the following:
Verify the fan FRU is enabled (use the
fanEnable command).
Replace the fan FRU.
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