Group rollback
To enable speedy recovery from configuration errors, if changes are
saved to a group of routers, that same set of changes can
be rolled back as a group.
First the group of routers is confirmed (unselect routers for a partial
rollback).
Then the versions to rollback to are confirmed.
This list of versions is the same as the
commit history -
including the ability to view or compare versions before proceeding with the rollback.