Cisco Systems Cisco IOS XR Manual De Usuario

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Cisco IOS XR Getting Started Guide
OL-10957-02
Chapter 5      Configuring Additional Router Features
Managing Configuration History and Rollback
  2000000021  Commit ID
  2000000022  Commit ID
RP/0/RP1/CPU0:router(admin)# show configuration commit changes 2000000020
Building configuration...
username cisco
 secret 5 $1$MgUH$xzUEW6jLfyAYLKJE.3p440
 group root-system
!
end
Previewing Rollback Configuration Changes
The show configuration rollback changes command allows you to preview the configuration changes 
that take place if you roll back the configuration to a specific commitID. For example, if you want to roll 
back the configuration to a specific point, all configuration changes made after that point must be 
undone. This rollback process is often accomplished by executing the “no” version of commands that 
must be undone.
To display the prospective rollback configuration changes from the current configuration to a specific 
commitID, go to EXEC or administration EXEC mode and enter the show configuration rollback 
changes to 
commitId command. In the following example, the command help displays the available 
commitIDs, and then the rollback changes are displayed.
RP/0/RP1/CPU0:router# show configuration rollback changes to ?
  1000000217  Commit ID
  1000000218  Commit ID
  1000000219  Commit ID
RP/0/RP1/CPU0:router# show configuration rollback changes to 1000000218
Building configuration...
no interface Loopback100
interface POS0/1/0/0
 no ipv6 nd dad attempts
!
!
no route-policy xx
end
To display the prospective rollback configuration changes from the current configuration to a specified 
number of previous sessions, go to EXEC or administration EXEC mode and enter the show 
configuration rollback changes last 
commit-range command:
RP/0/RP0/CPU0:router# show configuration rollback changes last 2
Building configuration...
interface Loopback3
no description
no ipv4 address 10.0.1.1 255.0.0.0
exit
interface Loopback4
no description
no ipv4 address 10.0.0.1 255.0.0.0
end
In the preceding example, the command display shows the proposed rollback configuration changes for 
the last two commit IDs.