Cisco Systems A9K24X10GETR Schnellstart Anleitung PDF herunterladen (Seite 85)

FINAL DRAFT —Cisco Confidential

4-9

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

OL-17502-01

Chapter 4 Configuring Additional Router Features

Managing Configuration History and Rollback

Tip To preview the commands that undo the configuration during a rollback, use the show configuration

rollback changes command.

To roll back the router configuration to a previously committed configuration, go to EXEC or

administration EXEC mode and type the rollback configuration to commitId command:

RP/0/RSP1/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.

Tip To preview the commands that undo the configuration during a rollback, use the show configuration

rollback changes command.

To roll back to the last x commits made, go to EXEC or administration EXEC mode and type the

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:

RP/0/RSP0/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.

Loading CommitID Configuration Changes to the Target Configuration

If the changes saved for a specific commitID are close to what you want, but a rollback is not appropriate,

you can load the configuration changes for a commitID into the target configuration, modify the target

configuration, and then commit the new configuration. Unlike the rollback process, the loaded changes

are not applied until you commit them.

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