HP StorageWorks Multi-protocol Router Installation Guide (A7437-96003, September 2005)

Installation, setup, and login38
Power On Self-Test
Each time the router is powered on, rebooted, or reset, it automatically runs POST. During POST, the
port status LEDs flash, verifying that the router is operating properly. POST completes in
approximately 3 minutes, with a total boot time of approximately 6 minutes.
POST runs through the following test cycles:
• Preliminary POST diagnostics
• Initialization of operating system
• Initialization of hardware
• Diagnostic tests, which are run on a number of functions, including circuitry, port functionality,
memory, parity, statistics counters, and serialization
If the prompt does not appear when POST completes, POST was unsuccessful. Contact your
HP- authorized reseller for more information.
To determine whether POST completed without errors, verify that all LEDs return to a normal state
after POST is complete. If one or more LEDs do not return to a normal state. see ”Checking POST
results” on page 39.
Bypassing POST
POST is organized into two groups: POST1 and POST2. POST1 cannot be bypassed and runs from
the boot loader.
The factory default configuration is set to run POST2, but you can configure your system to bypass it.
NOTE: Although each test performed during POST2 is configurable, you should only modify a
POST2 test if directed by an authorized HP technician.
Use the diagdisablepost command to disable POST2. To re-enable, use the diagenablepost
command. See the
HP StorageWorks XPath OS 7.4.x command reference guide for additional
information about these commands.
The following example shows a typical boot sequence, including POST messages.