L2VPN discovery overview
For L2VPN discovery,
the
MPLS Topology Server
component of is able to discover and model the following MPLS Layer 2 VPN entities:- LDP-signaled L2VPNsThis L2VPN uses Label Distribution Protocol (LDP) signaling to set up and maintain the pseudowires between PE devices in an MPLS network.
- BGP-signaled L2VPNsThis L2VPN uses Multiprotocol Border Gateway Protocol (MBGP) signaling to set up and maintain the pseudowires between PE devices in an MPLS network.
- VPWSVirtual private wire service, also known as point-to-point L2VPN, is a technology that uses a pseudowire to emulate a point-to-point circuit across an MPLS network.
- VPLSVirtual private LAN service, also known as point-to-multipoint L2VPN, is a technology that uses a full mesh of pseudowires to emulate a LAN across an MPLS network.TheMPLS Topology Serverrequires a Level 2 VPN feature license for the discovery of VPWS and VPLS L2VPNs. The provides information about licensing.