rrpp snooping enable

Usage Scenario

When an RRPP ring accesses the virtual private LAN service (VPLS) network in which devices are connected using PWs, the device cannot respond to RRPP protocol packets directly. Therefore, the VPLS network cannot sense the status change of the RRPP ring. When the RRPP ring topology changes, each node in the VPLS network forwards downstream data according to the MAC address table generated before the RRPP ring topology changes. As a result, the downstream traffic cannot be forwarded. When RRPP snooping is configured on sub-interfaces or VLANIF interfaces, the VPLS network can transparently transmit RRPP protocol packets, detect the changes on the RRPP rings, and upgrade the forwarding entries to ensure that traffic is switched in time to a congestion-free path.

When an RRPP network and a VPLS network are connected to form a network, you can run the rrpp snooping enable command to enable RRPP snooping on interfaces of the devices deployed on the network.

Prerequisites

Before running this command, the l2 binding vsi command has been run to associate sub-interfaces or VLANIF interfaces with Virtual Switch Instances (VSIs).

Precautions

• If the sub-interface or VLANIF interface is removed from the bound VSI, the RRPP snooping is automatically disabled on the interface.
• After being enabled with the RRPP snooping, the sub-interface or VLANIF interface is automatically associated with the VSI.
• The sub-interface or VLANIF interface allows only packet in a single VLAN to pass.