Cisco Systems OL-14361-01 Managing Configuration History and Rollback

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Cisco IOS XR Getting Started Guide

OL-14361-01

Chapter5 Configuring Additional Router Features

Managing Configuration History and Rollback

Examples

In the following example, the host services are enabled:

RP/0/RP0/CPU0:router# configure

RP/0/RP0/CPU0:router(config)# telnet ipv6 server max-servers 5

RP/0/RP0/CPU0:router(config)# http server

RP/0/RP0/CPU0:router(config)# xml agent corba

RP/0/RP0/CPU0:router(config)# commit

Managing Configuration History and Rollback

After each commit operation, a record of the committed configuration changes is saved. This record

contains only the changes made during the configuration session; it does not contain the complete

configuration. Each record is assigned a unique ID, known as a commitID.

When multiple commitIDs are present, you can use a commitID to identify a previous configuration to

which you want to return, or you can use the commitID to load the configuration changes made during

that configuration session. You can also load configuration changes from multiple commitIDs, and you

can clear commitIDs. If you are thinking about rolling back the configuration to a specific commitID,

consider the following guidelines:

•You cannot roll back to a configuration that was removed because of package incompatibility.

Configuration rollbacks can succeed only when the configuration passes all compatibility checks

with the currently active CiscoIOS XR software.

•If an incompatible configuration is found during the rollback operation, the operation fails and an

error is displayed.

The Cisco IOS XR software automatically saves up to 100 of the most recent commitIDs. The following

sections describe how to manage configuration changes and roll back to a previously committed

configuration:

•Displaying the CommitIDs, page 5-109

•Displaying the Configuration Changes Recorded in a CommitID, page 5-109

•Previewing Rollback Configuration Changes, page5-110

•Rolling Back the Configuration to a Specific Rollback Point, page5-110

•Rolling Back the Configuration over a Specified Number of Commits, page5-111

•Loading CommitID Configuration Changes to the Target Configuration, page5-111