Activates an Ethernet Ring Protection (ERP) instance by accepting the configurations and initializing protocol state machines.
An ERP instance is not enabled by default.
ERP configuration mode
Within an interconnected ring topology, in the major ring, you must first configure two interfaces. In a sub-ring, you must configure at least one interface before enabling the ERP instance.
Note
You must enable the major ring before enabling any sub-rings attached to the major ring (whose ERP ID is configured as parent-ring-id). Conversely, this order must be followed in reverse to disable an ERP instance.Use the no form of this command to deactivate the ERP instance.
The following example configures a non-RPL node in a major ring.
device# configure terminal device(config)# erp 1 device(config-erp-1)# right-interface vlan 2 e 1/2 device(config-erp-1)# left-interface vlan 2 e 1/1 device(config-erp-1)# enable