Juniper JUNOSE 11.3, Configuration Manual

Page: 291 / 632

You can use the service check-config running-configuration recover command to recover
the corrupted CFG files in the running configuration. You can recover only the files that
the
service check-config running-configuration command output lists as recoverable.
Auto-recovery of a corrupted running configuration in the active and standby SRPs works
as follows:
• If the file system on the primary SRP is corrupt when HA is disabled and the mode of
the
service check-config command has been set to auto-recover , the following changes
occur:
•
File Synchronization –Configuration files are not synchronized to the standby SRP
until successful recovery of the corrupted files is complete.
• HA –Enabling of HA is prevented during recovery and the state is restored on
successful recovery.
• Unified ISSU –If unified ISSU is in the idle state, the operation is disabled until recovery
is complete. The unified ISSU process continues if it has started.
• Auto-Recovery —A message indicates whether the configuration files are recoverable.
If the files are recoverable, the auto-recovery process starts. If the recovery is
unsuccessful, configuration monitoring is turned off. You can revert the SRP to the
last-known good configuration on the standby SRP using the
srp switch force
command. The standby SRP boots up using the last indicated configuration using
the
boot conf command.
• If the file system on the primary SRP is corrupt when HA is enabled and the mode of
the
service check-config command has been set to auto-recover , the following changes
occur:
• File Synchronization –Configuration files are not synchronized to the standby SRP
when the HA state changes to disabled and the status is restored when the recovery
window is complete.
•
HA –Enabling of HA is prevented (HA remains in disabled state) during the recovery
window and the state is restored after the recovery window is complete.
•
Unified ISSU –If unified ISSU is in the idle state, the operation is disabled until
successful recovery or the recovery window is complete. The unified ISSU process
continues if it has started.
• Auto-Recovery —A message indicates whether the configuration files are recoverable.
If the files are recoverable, the auto-recovery process starts. If the recovery is
unsuccessful, configuration monitoring is turned off. You can revert the SRP to the
last-known good configuration on the standby SRP using the
srp switch force
command. The standby SRP boots up using the last indicated configuration using
the
boot conf command.
• If the file system on the standby SRP is corrupt when HA is disabled and the mode of
the
service check-config command has been set to auto-recover , auto , or manual ,
the following changes occur:
261 Copyright © 2010, Juniper Networks, Inc.
Chapter 5: Managing the System