Enabling the ERP configuration

You must apply the enable command to activate an ERP configuration. You can use the no command to disable the configuration.

Within an interconnected ring topology, you must first enable ERP on the major ring configured with two interfaces, followed by the sub-ring configured with a single interface. There can be multiple sub-rings configured and activated per single major ring. However to deactivate or delete ERP on this interconnected ring topology, the sub-ring(s) must be deactivated or deleted first, followed by the major ring.

The following example activates 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

The following example activates ERP for a sub-ring.

device# configure terminal
device(config)# erp 2
device(config-erp-2)# right-interface vlan 2 ethernet 1/1
device(config-erp-2)# sub-ring parent-ring-id 1
device(config-erp-2)# enable