- Hewlett-Packard SAN Switch Installation Guide

POST and boot specifications
When the switch is powered on or rebo oted, the switch performs POST. Total boot
time with POST is at least three minutes.
Use fastboot t
o bypass POST after subsequent reboots. For more informa tion about
the fastboot command, r efer to the Fabric OS command reference manual for the
Fabric OS version running on your switch.
POST
POST is a system check that is performed each time the switch is powered on, rebooted,
or reset. During POST , the LEDs flash different colors. Any errors that occur during
POST appear in the error log.
Monitor POST diagnostic tests via the error log or the CLI. The POST process consists of:
• Displaying preliminar y POST diagnostics
• Initializing the operating system
• Initializing the hardware
• Performing diagnostic tests that check several functions, including circuitry, por t
functionality, m em ory, statistics counters, and serialization
Boot
Boot comp letes in approximately three minutes d uring POST. The boot process consists of:
• Defining the universal port configuration set
• Initial
izing the links
• Analyzing the fabric
If any ports are connected to other s witches, the switc h partic ipates in a fabric
configuration.
• Assig
ning domain IDs and port addresses
• Constructing the unicast routing tables
• Enabling normal port operation
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Managing SAN Switches