Fabric OS Reference Manual

58 Fabric OS Reference Manual
diagDisablePost
Disable POST execution at reboot.
Synopsis
diagDisablePost
Availability admin
Description Use this command to disable Power On Self Test (POST) execution at
switch reboot. This mode is saved in flash memory, and POST remains
disabled until it is enabled using the
diagEnablePost
command.
A switch rebooted without POST enabled issues a DIAG-POSTSKIPPED
error message:
0x10fc0c10 (tSwitch): Apr 6 13:24:42
Error DIAG-POST_SKIPPED, 3,
Skipped POST tests: assuming all ports are healthy,
Err# 0004
POST includes the following tests:
• ramTest - Bit write / read test of SDRAMS in the switch.
• portRegTest - Bit write / read test of the ASIC SRAMs and registers.
• centralMemoryTest - Bit write / read test of the ASIC central memory.
• cmiTest - ASIC to ASIC connection test of the CMI bus.
• camTest - Functional test of the CAM memory.
• portLoopbackTest - Functional test of switch by sending and receiving
frames from the same port.
For more information about these tests, refer to the individual command
descriptions.
Note
The cold boot (power reset) runs the long ramTest, while the warm
boot (software reset) runs the short ramTest.