Configuration Rollback
44 Basic System Configuration Guide
The advantage of this feature are the following:
• Changes made to router configuration is performed with minimal impact on services
being provided by the SR by not having to reboot the router.
• No impact in areas of configuration that did not change.
With the rollback feature, the operator can smoothly revert to previous configurations.
Configuration parameters that changed (or items that changed configuration have
dependencies on) are first removed (revert to default), and the previous values are then
restored (can be briefly service impacting in changed areas).
A history of changes is preserved (checkpoint ids) that allows rollback to different points, as
well as examination of changes made as shown in Figure 3.
Figure 3: Rollback Operation
Feature Behavior
The following list describes detailed behavior and CLI usage of the rollback feature:
• The user can create a rollback checkpoint, and later, revert to this checkpoint with
minimal impacts to services:
admin>rollback# save [comment comment-string]
Active Config
Rollback
Checkpoint
Files
SNMP
(SAM)
CLI
commands
(config)
rollback save
rollback revert
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