Cisco Systems Cisco IOS XR Manual De Usuario
5-6
Cisco IOS XR Getting Started Guide
OL-10957-02
Chapter 5 Configuring Additional Router Features
Managing Configuration History and Rollback
Rolling Back the Configuration to a Specific Rollback Point
When you roll back the configuration to a specific rollback point, you undo all configuration changes
made during the session identified by the commit ID for that rollback point, and you undo all
configuration changes made after that point. The rollback process rolls back the configuration and
commits the rolled-back configuration. The rollback process also creates a new rollback point so that
you can roll back the configuration to the previous configuration.
made during the session identified by the commit ID for that rollback point, and you undo all
configuration changes made after that point. The rollback process rolls back the configuration and
commits the rolled-back configuration. The rollback process also creates a new rollback point so that
you can roll back the configuration to the previous configuration.
Tip
To preview the commands that undo the configuration during a rollback, use the show configuration
rollback changes command.
rollback changes command.
To roll back the router configuration to a previously committed configuration, go to EXEC or
administration EXEC mode and enter the rollback configuration to commitId command:
administration EXEC mode and enter the rollback configuration to commitId command:
RP/0/RP1/CPU0:router# rollback configuration to 1000000220
Loading Rollback Changes.
Loaded Rollback Changes in 1 sec
Committing.
2 items committed in 1 sec (1)items/sec
Updating.
Updated Commit database in 1 sec
Configuration successfully rolled back to '1000000220'.
Rolling Back the Configuration over a Specified Number of Commits
When you roll back the configuration over a specific number of commits, you do not have to enter a
specific commit ID. Instead, you specify a number x, and the software undoes all configuration changes
made in the last x committed configuration sessions. The rollback process rolls back the configuration,
commits the rolled-back configuration, and creates a new commitID for the previous configuration.
specific commit ID. Instead, you specify a number x, and the software undoes all configuration changes
made in the last x committed configuration sessions. The rollback process rolls back the configuration,
commits the rolled-back configuration, and creates a new commitID for the previous configuration.
Tip
To preview the commands that undo the configuration during a rollback, use the show configuration
rollback changes command.
rollback changes command.
To roll back to the last x commits made, go to EXEC or administration EXEC mode and enter the
rollback configuration last x command; x is a number ranging from 1 to the number of saved commits
in the commit database.
rollback configuration last x command; x is a number ranging from 1 to the number of saved commits
in the commit database.
In the following example, a request is made to roll back the configuration changes made during the
previous two commits:
previous two commits:
RP/0/RP0/CPU0:router# rollback configuration last 2
Loading Rollback Changes.
Loaded Rollback Changes in 1 sec
Committing.
1 items committed in 1 sec (0)items/sec
Updating.
Updated Commit database in 1 sec
Configuration successfully rolled back 2 commits.