44 Netra 440 Server System Administration Guide • August 2004
Reset Scenarios
Three OpenBoot configuration variables, diag-switch?, obdiag-trigger, and
post-trigger, control whether the system runs firmware diagnostics in response
to system reset events.
The standard system reset protocol bypasses POST and OpenBoot Diagnostics
completely unless the variable diag-switch? is set to true, or the system control
keyswitch is in the Diagnostics position. The default setting for this variable is
false. Therefore, to enable ASR, which relies on firmware diagnostics to detect
faulty devices, you must change this setting to true. For instructions, see “Enabling
and Disabling Automatic System Recovery” on page 44.
To control which reset events, if any, automatically initiate firmware diagnostics, the
OpenBoot firmware provides variables called obdiag-trigger and
post-trigger. For detailed explanations of these variables and their uses, refer to
the Netra 440 Server Diagnostics and Troubleshooting Guide (817-3886-xx).
Automatic System Recovery User Commands
The OpenBoot commands .asr, asr-disable, and asr-enable are available for
obtaining ASR status information and for manually unconfiguring or reconfiguring
system devices. For more information, see:
■“Unconfiguring and Reconfiguring Devices” on page 46
■“To Reconfigure a Device Manually” on page 48
■“Obtaining Automatic System Recovery Information” on page 46
Enabling and Disabling Automatic System Recovery
The automatic system recovery (ASR) feature is not activated until you enable it at
the system ok prompt.

▼ To Enable Automatic System Recovery

1. At the ok prompt, type:
ok setenv diag-switch? true
ok setenv auto-boot? true
ok setenv auto-boot-on-error? true