LDP is designed to be highly extensible, using TLV triplets to be able to transport multiple additional fields in the future and warrantee the compatibility with previous versions via ignoring the unknown new fields. LDP is highly flexible, as supports local and remote neighbors (using targeted LDP sessions).
OSPF & LDP (LDP Autoconfig , MPLS LDP-IGP Synchronization) MPLS LDP Session Protection LDP Transport Address MPLS LDP Graceful Restart Feature VRF Lite (Multi-VRF CE) What is MPLS VPN Where MPLS LDP will be configured? How PE1 will recognize & separate Different CE routes? Configuring vrf table and assign it to interface for IPv4 , IPv6
I'm configuring ldp on my small network with 4 routers and im running an IGP on all the devices precisely OSPF in area 12, but when i issues the show mpls ldp neighbor command i dnt have any respond but if when using sh mpls interfaces is showing the interfaces are operational below is my config
LDP is not mandatoey for RSVP-TE tunnel. For RSVP-TE tunnel RSVP is mandatory :-) But LDP is mandatory let's say for "usual" MPLS operation. So, the topmost label is LDP, the next one is RSVP and the bottommost is MPLS VPN label in your case. If you disable RSVP then traffic will be routed usual normal LDP LSP that is build on top routing table.
- LDP is required to automatically signal the LSP's based on the best next-hops calculated by the underlying IGP by advertising labels (based on next hops) to directly connected LDP neighbors throughout the MPLS domain of the Service Provider. LDP advertises labels for every prefix in the routing table. It is not based on next-hop.