This feature is disabled by default. It is enabled by means of the rollback enable EXEC command. The execution of the no rollback enable command erases all the checkpoints and rollback related logs. Admin privileges are required to create checkpoints and perform rollback operations.
When rollback is disabled, other rollback commands result in the following error message:
Error%% This command is available when rollback is enabled.
The user creates configuration checkpoints (maximum of 10 are allowed) by executing the rollback checkpoint command in privileged EXEC mode. A checkpoint name is optional. If a name is not supplied, a checkpoint is created with a timestamp in YYYYMMDD_HHMISS format, for example, 20180511_234535.
As long as the checkpoint file is present on the device, the user can revert to a specified checkpoint file without having to reboot the device. However, certain configuration changes may require reboot, for example, hardware profile configurations. A rollback to a specific checkpoint restores the active configuration of the system to that of the checkpoint.
A variety of show commands allow the user to see the details of failed configurations.
Note
MPLS and it's allied configurations (VPLS, VLL, LDP) are not supported under Configuration Rollback.