Configuration History And Rollback - Cisco CRS-1 - Carrier Routing System Router Getting Started Manual

Chapter 2 Cisco IOS XR Basic Configuration Management
Table 2-9
Command
configure exclusive
exit or end
To display the current configuration sessions, enter the show configuration sessions command in EXEC
mode. Exclusive configuration sessions are noted by an asterisk (*), as shown in the following example:
RP/0/RP0/CPU0:router# show configuration sessions
Session
00000000-000650a4-00000000
00000000-0006a0a3-00000000
To lock the running configuration so that other users cannot commit changes while your configuration
session is active, enter the configure exclusive command:
RP/0/RP0/CPU0:router# configure exclusive
RP/0/RP0/CPU0:router(config)#
The running configuration is unlocked when the user who entered the configuration mode using the
configure exclusive command exits the configuration mode:
RP/0/RP0/CPU0:router(config)# exit

Configuration History and Rollback

After each commit operation, a record is saved of the configuration that was replaced. Each record is
assigned a unique ID, known as a commitID. The commitIDs represent the rollback points that allow you
to revert to a previous configuration.
The Cisco IOS XR software automatically saves up to 100 of the most recent commitIDs. The following
sections describe how to display configuration changes and how to roll back to a previously committed
configuration:
•
•
•
•
•
Table 2-10
configuration.
Configuration Session Commands (continued)
Displaying the Rollback Points, page 2-24
Rolling Back the Configuration to a Specific Rollback Point, page 2-25
Rolling Back the Configuration to a Specified Number of Commits, page 2-25
Displaying the Configuration History Log, page 2-26
Configuration Change Notification, page 2-26
summarizes the commands used to display the commit history and roll back to a previous
Description
Enters global configuration mode and denies other users the ability to
commit changes while your configuration session is active. Other
users can still enter global configuration mode and populate a target
configuration, but they cannot commit those changes to the running
configuration until you exit your exclusive configuration session.
If the configuration is already locked by another user, the
Note
configure exclusive command fails.
Unlocks the other configuration sessions by ending your configuration
session and returning to EXEC mode.
Line User Date
dummy_line root Thu Oct
dummy_line root Thu Oct
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
Configuration History and Rollback
Lock
3 12:20:12 2003
3 12:24:23 2003 *
2-23