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

Command name

Description

number

 

 

 

 

 

 

 

 

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

6

bbc@1,500000

access.

 

 

 

172 Avaya CMS Sun Fire V880 Computer Hardware Installation, Maintenance, and Troubleshooting

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Avaya V880 manual OpenBoot diagnostic tests, Command Command name Description Number