1-15z Before specifying RRPP rings for an RRPP domain, you must specify protected VLANs for thedomain.z Before specifying rings for an RRPP domain, you can delete or modify the protected VLANsconfigured for the RRPP domain; after specifying rings for an RRPP domain, you can delete ormodify the protected VLANs configured for the RRPP domain, however, you cannot delete all theprotected VLANs configured for the domain.z Deleting an RRPP domain deletes its protected VLANs at the same time.z The protected-vlan command configures protected VLANs for an RRPP domain by referencingMSTIs to which the protected VLANs are mapped. You can use the display stpregion-configuration command to view the VLAN-to-MSTI mappings. For detailed informationabout VLAN-to-MSTI mapping configuration, refer to MSTP Configuration in the Access Volume.z The control VLAN configured for an RRPP domain must be a new one.z Control VLAN configuration is required for configuring an RRPP ring.z A Ring ID cannot be applied to more than one RRPP ring in an RRPP domain.z You must first configure the primary ring and then the subring when configuring an edge node.Moreover, you must remove all subring configurations before deleting the primary ringconfiguration of an edge node. However, the RRPP ring enabled cannot be deleted.z To use the undo rrpp domain command to remove an RRPP domain, you must ensure the RRPPdomain has no RRPP ring.z Before removing or modifying the control VLAN of an RRPP domain, make sure that the RRPPdomain is not configured with any RRPP ring.Configuring Assistant Edge NodeFollow these steps to configure assistant-edge node:To do… Use the command… RemarksEnter system view system-view —Create an RRPP domain andenter its view rrpp domain domain-id RequiredSpecify a control VLAN for theRRPP domain control-vlan vlan-id RequiredSpecify protected VLANs forthe RRPP domainprotected-vlanreference-instanceinstance-id-listRequiredNo protected VLAN is specifiedfor an RRPP domain bydefault.Specify the current device asthe transit node of the primaryring, and specify the primaryport and the secondary portring ring-id node-mode transit[ primary-port interface-typeinterface-number ][ secondary-port interface-typeinterface-number ] levellevel-valueRequired
