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On Cisco IOS XE the configration is immediately "commited" when a CLI
command is accepted in a configuration session. This means that simply
exiting an active configuration session is not sufficient to abort
configuration because of an error. We use the "config archive" feature
to instruct the device to keep track of CLI commands entered.
The driver creates an archive checkpoint before each configuration
change and maintains the history in a stack. This is then used for both
automatic (error recovery) and user-triggered rollback operations.
The config archive must be enabled on the device prior to starting the
configuration. As it stands today, this is the responsibility of the
user. The configuration is:
archive
log config
logging enable
path bootflash:archive
Allows configuring archive on IOS XE without creating a checkpoint. Archive is required for checkpoint creation but must be configured first, so the first configure_and_commit is executed without the option to rollback.
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On Cisco IOS XE the configration is immediately "commited" when a CLI
command is accepted in a configuration session. This means that simply
exiting an active configuration session is not sufficient to abort
configuration because of an error. We use the "config archive" feature
to instruct the device to keep track of CLI commands entered.
The driver creates an archive checkpoint before each configuration
change and maintains the history in a stack. This is then used for both
automatic (error recovery) and user-triggered rollback operations.
The config archive must be enabled on the device prior to starting the
configuration. As it stands today, this is the responsibility of the
user. For instance, netclics applies it on device initialization. The configuration is:
archive
log config
logging enable
path bootflash:archive