In an environment that is using LDP signaling to establish L2VPNs, the MPLS Topology Server discovers the PE devices and the LDP speakers that are associated with the L2VPNs. It creates an LdpProtocolEndpoint instance for each discovered LDP speaker, and sets the IsTargetedPeer attribute of each instance to True, to indicates that each instance’s termination point is to a targeted peer.

LDP-signaled L2VPNs use LDP signaling to construct, advertise, maintain, and delete pseudowires.

Here are some relationships that are created for LdpProtocolEndpoint (targeted):

  • LdpProtocolEndpoint relationship HostedBy

    Relates an LdpProtocolEndpoint to the PE device that hosts the LDP speaker that is represented by the LdpProtocolEndpoint.

  • LdpProtocolEndpoint relationship LayeredOver

    Points from an LdpProtocolEndpoint to the interface and IP address, on the host PE device, that are associated with the LdpProtocolEndpoint.

  • LdpProtocolEndpoint relationship Peer

    Points from an LdpProtocolEndpoint to the endpoint at the other end of the LdpAdjacency. Because an LDP session is TCP-based, a peer LdpProtocolEndpoint can terminate on a PE device that is multiple Layer 3 hops away.