Brocade 6505 Hardware Reference Manual - Manual (Page 33)

Nonport side LED patterns during normal operation TABLE 2
LED name LED color Status of hardware Recommended action
Power supply and fan
assembly status
(green) No light Power supply and fan assembly is
not receiving power or is off. Verify the power supply and fan
assembly is on and seated and the
power cord is connected to a
functioning power source.
Steady green Power supply and fan assembly is
operating normally. No action required.
Flashing green Power supply and fan assembly is
faulty.
Note: When the switch is first
powered on the power supply and
fan assembly status LED will
show flashing green until POST
has completed.
Check the power cable connection.
Verify that the power supply and fan
assembly is powered on.
Replace the power supply and fan
assembly FRU.
POST and boot specifications
When the switch is turned on or rebooted, the switch performs power-on self-test (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:
• Conducts preliminary POST diagnostics.
• Initializes the operating system.
• Initializes hardware.
• 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:
• Performs universal port configuration.
• Initializes links.
• Analyzes fabric. If any ports are connected to other switches, the switch participates in a fabric
configuration.
• Obtains a domain ID and assigns port addresses.
• Constructs unicast routing tables.
• Enables normal port operation.
POST and boot specifications
Brocade 6505 Hardware Reference Manual 33
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