Acknowledging faults: Multicast MAC ping provides the fault acknowledgement function similar to that provided by 802.1ag MAC ping. In a multicast MAC ping test, test packets are sent to test whether the path from the local device to the destination device is reachable. Multicast MAC ping can acknowledge the faults of links between multiple MEPs once.
Discovering RMEPs: All RMEPs in the MA can be discovered.
For example, there are three MEPs in an MA: MEP1, MEP2, and MEP3. After multicast MAC ping is configured on MEP1, MEP1 sends multicast LBMs. After MEP2 and MEP3 receive the LBM, they reply with an LBR. The LBR carries the MAC address of MEP2 or MEP3, MEP ID, and delay. Before configuring the remote-mep command on MEP1, you can configure multicast MAC ping to detect all RMEPs in an MA.
Implementation of multicast MAC ping depends on the maintenance domain (MD), maintenance association (MA), and maintenance association end point (MEP). Therefore, multicast MAC ping can be performed only on a network with MDs, MAs, and MEPs configured.
Perform the following steps on the edge device in an MA.