When the MPLS Topology Server component of MPLS Manager attempts to discover MPLS, VPN, and (optional) BGP topology by probing a router or switch device, one of the following results occurs:

  • Discovery successfully completes, and the MPLS, VPN, and BGP topology objects that are discovered by probing the device are added to the managed topology.

  • Discovery starts but communication is lost between the MPLS Topology Server and the device.

  • Discovery starts but the device does not respond to SNMP polls and/or CLI commands.

  • Discovery starts but one or more of the MPLS Topology Server probes encounters an error during the discovery process.

  • Discovery is unable to start or successfully complete.