When discovery occurs

The
MPLS Topology Server
initiates a discovery whenever:
  • IP Availability Manager
    is added as a source to the
    MPLS Topology Server
    , as explained in Chapter 8, “Preparing and Initiating Discovery.”
  • IP Availability Manager
    completes a discovery cycle: an initial discovery, a full discovery, a pending discovery, or a single-device discovery.
    By subscribing to DiscoveredLastAt attribute updates on
    IP Availability Manager
    , the
    MPLS Topology Server
    becomes aware of discovery cycle completions in
    IP Availability Manager
    .
  • The
    MPLS Topology Server
    is restarted or communication is lost and then reestablished between the
    MPLS Topology Server
    and
    IP Availability Manager
    .
  • The
    MPLS Topology Server
    receives a manual discovery (Discover All) request, as explained in Chapter 10, “Using Full or Pending Discovery.”