Sun Microsystems Quad FastEthernet Installation And User Manual page 54

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6. Type the following to run the selftest using the test command on one of
the adapters four Ethernet channels:
ok test <device path>
The following tests are run when the test command is executed:
• hme register
• MAC internal loopback
• External loopback
• 100 Mbps PHY loopback
• 10 Mbps PHY loopback
If the test passes, you will see these messages:
Internal loopback test -- succeeded
Transceiver check -- Using onboard transceiver -- Link up
passed
If the channel is not connected to a network, you will see the following error
messages:
Internal loopback test -- succeeded
Transceiver check -- Using onboard transceiver -- Link down
Autonegotiation timeout
Check Cable or contact system administrator
Failed
selftest failed. return code = -1
Note – To test other channels of the adapter, you will need to execute the test
command separately on each channel.
7. After testing the adapter, type the following to return the OpenBoot
PROM to standard operating mode:
ok setenv diag-switch? false
Sun Quad FastEthernet SBus Adapter Installation and User's Guide—April 1997