The MPLS Topology Server performs the following steps to discover L2VPN topology:

  1. Probes the imported MPLS-relevant router and switch devices for L2VPN topology information and creates L2VPN objects and their relationships in its repository.

  2. Combines the information that is collected from the various probes to create additional L2VPN objects and relationships.

  3. Creates relationships that associate the discovered L2VPN objects with the discovered MPLS objects.

  4. Exports the L2VPN topology to the Global Manager.

  5. Exports a subset of the L2VPN topology to the MPLS Monitoring Server and the MPLS Analysis Server.