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TABLE 16 Power Supply and Fan Assembly Status LED Patterns During Normal Operation (continued)
LED Color
Interpreting POST Results
Each time the switch is powered on, rebooted, or reset, the switch performs a power-on self-test (POST). The total boot time with the
POST can be several minutes. The POST can be omitted after subsequent reboots by using the fastboot command or entering the
diagDisablePost command to persistently disable the 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. During the POST, the LEDs flash different
colors.
The POST performs the following tasks:
•
Conducts preliminary POST diagnostics.
•
Initializes the operating system.
•
Initializes thehardware.
•
Runs diagnostic tests on several functions, including the circuitry, port functionality, memory, statistics counters, and
serialization.
Perform the following steps to determine whether the POST completed successfully and whether any errors were detected.
1.
Verify that the LEDs on the device indicate that all components are healthy. If one or more LEDs do not display a healthy state:
a)
Verify that the LEDs are not set to "beacon" (this can be determined through the switchShow command or Web Tools).
b)
Follow the recommended action for the observed LED behavior.
2.
Verify that the diagShow command displays that the diagnostic status for all ports in the device is OK.
3.
Review the system log for errors. Errors detected during the POST are written to the system log, which can be viewed by using
the errShow command.
Interpreting BOOT Results
BOOT performs the following tasks after POST is complete:
1.
Performs universal port configuration.
2.
Initializes links.
3.
Analyzes the 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.
5.
Constructs unicast routing tables.
6.
Enables normal port operation.
Brocade 7810 Extension Switch Hardware Installation Guide
7810-IG101
Description
NOTE: When the device is first powered on, the
power supply and fan assembly status LED
flashes until the POST has completed.
Interpreting BOOT Results
Action Required
63
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