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172 Avaya CMS Sun Fire V880 Computer Hardware Installation, Maintenance, and Troubleshooting
OpenBoot diagnostic tests
OpenBoot Diagnostics (OBDiag) is a menu-driven diagnostic tool that diagnoses system
hardware.
OBDiag performs root-cause failure analysis on the referenced devices by testing internal
registers, confirming subsystem integrity, and verifying device functionality.
To use the OpenBoot diagnostic tests:
1. From the root login, turn off CMS.
2. Enter:
/usr/sbin/shutdown -y -i0 -g0
The system shuts down and the ok prompt is displayed.
3. Enter:
obdiag
This loads the test program and the test menu is displayed.
4. Enter:
obtest <command number>
See the following table for a summary of OpenBoot Diagnostic test commands.
Command
number
Command name Description
1 SUNW,hme@0,1
● Resets the Ethernet channel.
● Performs Ethernet channel engine internal loopback.
● Enables the LAN data to be routed back to the receive
MII data outputs.
● Enables MII transmit data to be routed to the MII
receive data path.
● Forces the twisted-pair transceiver into loopback mode.
2 SUNW,isptwo@4 Tests the external SCSI interfaces.
3 SUNW,m64B@13 Tests the video monitor port.
4 SUNW,qlc@2 Tests the registers of the on-board FC-AL controller and
subsystem (Loop A).
5 bbc@1,0 Tests all writable registers in the boot bus controller and
then verifies that at least one processor has boot bus
access.
6 bbc@1,500000