On Cisco IOS XR platform, why would an engineer use the load rollback command instead of the rollback command?
Click on the arrows to vote for the correct answer
A. B. C. D.A.
On Cisco IOS XR platform, both the "rollback" and "load rollback" commands are used to revert a configuration to a previously saved state. However, there are differences between the two commands.
The "rollback" command is used to revert a configuration to a previously saved state in the configuration history. It is mainly used to undo recent changes made to the configuration. The command is used in the format "rollback configuration <number>", where <number> specifies the configuration history number to which the system should roll back.
The "load rollback" command, on the other hand, is used to revert a configuration to a specific configuration file. The command is used in the format "load rollback <filename>" where <filename> specifies the name of the configuration file that should be loaded.
So, the answer to why an engineer would use the "load rollback" command instead of the "rollback" command on Cisco IOS XR platform depends on the specific scenario. Here are some possible scenarios where the "load rollback" command may be preferred:
A. Reverting multiple configuration changes simultaneously: If an engineer wants to revert multiple changes made to the configuration simultaneously, the "load rollback" command can be used. This is because the "rollback" command can only revert one configuration change at a time, whereas the "load rollback" command can revert multiple changes made to a specific configuration file. In this case, answer A could be correct.
B. Reverting changes made after the desired configuration history: If an engineer wants to revert a configuration to a previous state that is no longer in the configuration history, the "load rollback" command should be used. This is because the "rollback" command can only revert to previously saved configuration history, whereas the "load rollback" command can load any configuration file. In this case, answer B could be correct.
C. Reverting changes to RLP objects: If an engineer wants to revert changes made to Resource Limit Profile (RLP) objects, the "load rollback" command should be used. This is because the "rollback" command cannot revert changes made to RLP objects, whereas the "load rollback" command can revert changes made to any configuration file, including those containing RLP objects. In this case, answer C could be correct.
D. Reverting changes to admin mode configuration: If an engineer wants to revert changes made to the admin mode configuration, the "load rollback" command should be used. This is because the "rollback" command cannot revert changes made to the admin mode configuration, whereas the "load rollback" command can load any configuration file, including those containing admin mode configuration. In this case, answer D could be correct.
In summary, the "load rollback" command is generally used to revert a configuration to a specific configuration file, whereas the "rollback" command is used to revert a configuration to a previously saved state in the configuration history. The choice between the two commands depends on the specific scenario and the desired outcome.