Alcatel-Lucent 7450 ESS-12 Configuration Manual page 65

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7450 ESS OS Basic System Configuration Guide
again. The second attempt will typically complete the remaining configuration changes
required to fully revert to the desired checkpoint.
When a new backup CPM is commissioned, the user should do an "admin redundancy
rollback-sync" to copy the entire set of rollback files from the active CPM cf to the new
standby CPM cf. If the operator wants the system to automatically copy new rollback
checkpoints to both cfs whenever a new checkpoint is created, then the "config
redundancy rollback-sync" should be configured.
An HA CPM switchover during a rollback revert will cause the rollback operation to
abort. The newly active CPM will have an indeterminate configuration. A log event is
created in this case to warn the operator. When an HA switchover occurs during a rollback
(or within a few seconds of a rollback completing), the operator is advised to repeat the
rollback revert operation to the same checkpoint.
A rollback checkpoint stores the rollback-location and the local/remote-max-checkpoint
values, and as such a rollback revert operation can change those values. If an operator
changes the local/remote-max-checkpoint values it is recommended to delete all the
existing checkpoints (otherwise a subsequent rollback revert could change the max back
to a previous value).
If a warning prompt (y/n) is displayed when a rollback revert is initiated, it is highly
suggested to respond 'no' to the warning prompt the first time, save a rollback checkpoint
before attempting this rollback revert, and then executing the revert again and responding
'yes'. If the rollback encounters problems then a revert to the saved checkpoint can be
used to go back to the initial configuration state.
CLI Usage
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