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 LSPsDiscovers 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 subLSPsDiscovers 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 LSPsDiscovers any combination of TE LSPs and LDP LSPs in the managed network.
- Inter-AS LSPsDiscovers 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 LSPsDiscovers TE LSPs and LDP LSPs that are built on a mixture of multi-vendor devices.
- LSP load balancingDiscovers multi-path load balancing for LDP LSPs on Juniper M/T devices; disabled by default.
- LDP adjacenciesDiscovers non-targeted LDP adjacencies for Cisco IOS and Juniper devices.
- RSVP sessionsDiscovers RSVP sessions for Cisco IOS and Juniper M/T devices.
- PE and P devicesDiscovers 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 devicesDiscovers 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, theMPLS Topology Serversupports the following LSP discovery related features:
- Automated LSP rediscoveryDetects 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 LDPCreates 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 .