Post And Boot Specifications; Post; Boot; Interpreting Post Results - HP 16Gb SAN User Manual

POST and boot specifications

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 are listed in the
error log.
The 16Gb SAN Switch performs POST when it is turned on or rebooted. Total boot time with POST
is approximately three minutes.
POST can be omitted for subsequent reboots by using the fastboot command. For more
information about this command, see the latest version of the Fabric OS Command Reference
Guide. If you suspect a problem with the switch, enable POST to obtain more information on any
failure.

POST

The success and failure results of the diagnostic tests that run during POST can be monitored through
the error log or the CLI.
POST includes the following:
Running preliminary POST diagnostics
Initializing the operating system
Initializing hardware
Running diagnostic tests on several functions, including circuitry, port functionality, memory,
statistics counters, and serialization

Boot

Boot completes in approximately three minutes if it is run. Boot includes the following tasks after
POST completes:
Universal ports are configured.
Links are initialized.
Fabric is analyzed; if any ports are connected to other switches, the 16Gb SAN Switch
participates in a fabric configuration.
The 16Gb SAN Switch obtains a domain ID and assigns port addresses.
Unicast routing tables are constructed.
Normal port operation is enabled.

Interpreting POST results

To determine whether POST completed successfully and whether any errors were detected:
1. Verify that the 16Gb SAN Switch LEDs indicate that all components are healthy. See
Table 9 (page 23)
do not display a Healthy state, use the switchshow command to verify that the LEDs on the
switch are not set to beacon.
2. Verify that the 16Gb SAN Switch prompt appears on the terminal of a computer workstation
connected to the switch. If there is no switch prompt when POST completes, press Enter. If the
switch prompt still does not appear, try opening another Telnet session or another management
tool. If the 16GB SAN Switch still does not complete POST successfully, contact your HP
representative.
24 Managing the 16Gb SAN Switch
for a description and interpretation of LED patterns. If one or more LEDs