Cisco IOS policy/class map renaming

In Cisco IOS there is an option to rename a policy-map/class-map using single command instead of deleting and re-creating new ones.

For example:

! class-map match-all CM_LOCAL_NET match access-group name ACL_EXAMPLE ! ! policy-map PM_MARK_LOCAL class CM_LOCAL_NET set ip dscp af22 class class-default ! interface FastEthernet0/0 description LAN load-interval 30 speed auto full-duplex service-policy input PM_MARK_LOCAL !

Now we can change in single command the policy or class map name and the IOS will change it in the rest of the configuration:

RTR(config)#class-map CM_LOCAL_NET RTR(config-cmap)#rename CM_NEW_NAME RTR(config-cmap)#exit RTR(config)#policy-map PM_MARK_LOCAL RTR(config-pmap)#rename PM_NEW_NAME RTR(config-pmap)#exit

The new configuration output:

class-map match-all CM_NEW_NAME match access-group name ACL_EXAMPLE ! ! policy-map PM_NEW_NAME class CM_NEW_NAME set ip dscp af22 class class-default ! interface FastEthernet0/0 description LAN load-interval 30 speed auto full-duplex service-policy input PM_NEW_NAME

We can see that the IOS has changed the policy-map name automatically.