MPLS discovery overview

For MPLS discovery, the
MPLS Topology Server
component of
is able to discover and model the following MPLS entities:
  • TE tunnels and TE LSPs
    Discovers traffic-engineered tunnels and associates backup or secondary TE LSPs with primary TE LSPs; applicable to TE tunnels that are built on Cisco or Juniper M/T devices.
  • P2MP LSPs and subLSPs
    Discovers traffic-engineered point-to-multipoint (P2MP) LSPs and their subLSPs; applicable to P2MP LSPs that are built on Juniper M/T devices that are running JUNOS 9.0 or higher.
  • LDP LSPs
    Discovers any combination of TE LSPs and LDP LSPs in the managed network.
  • Inter-AS LSPs
    Discovers multi-stacked-label LDP LSPs that span multiple autonomous systems; applicable to inter-AS LSPs that are built on Juniper M/T devices.
  • Multi-vendor LSPs
    Discovers TE LSPs and LDP LSPs that are built on a mixture of multi-vendor devices.
  • LSP load balancing
    Discovers multi-path load balancing for LDP LSPs on Juniper M/T devices; disabled by default.
  • LDP adjacencies
    Discovers non-targeted LDP adjacencies for Cisco IOS and Juniper devices.
  • RSVP sessions
    Discovers RSVP sessions for Cisco IOS and Juniper M/T devices.
  • PE and P devices
    Discovers PE and P devices that are implemented on any of the PE- or P-capable devices that are supported by
    .
  • CE and multi-VRF CE devices
    Discovers traditional CE devices that are implemented on any of the CE-capable devices that are supported by
    .
    Discovers multi-VRF CE devices that are implemented on any of the multi-VRF CE capable Cisco devices that are supported by
    .
    All discovery features except LSP load balancing are enabled by default. The enabling parameter for LSP load balancing is “EnableLoadBalancingLSP,” which is described in the
    .
    In addition, the
    MPLS Topology Server
    supports the following LSP discovery related features:
  • Automated LSP rediscovery
    Detects the reroute of TE LSPs and subsequently rediscovers the TE LSPs, without the need to perform a full discovery; disabled by default.
    The enabling polling group for this feature is “LSP SNMP Setting,” which is described in the
    .
  • Associate LSP to LDP
    Creates LayeredOver relationship between discovered LDP LSPs that are layered over one or more discovered TE LSPs; enabled by default.
    The enabling parameter for this feature is “ASSOCIATE_LSP_TO_LDP,” which is described in the
    .