Patent ID: 7554996

Claim:
A method for controlling distribution of reachability information for a tail-end node of a traffic engineering (TE) label switched path (LSP) to a head-end node of the TE-LSP in a computer network, the TE-LSP spanning multiple domains of the network such that the tail-end node resides in a domain that is remote from the local domain of the head-end node, the method comprising: requesting, from the head-end node, reachability information from the tail-end node; transmitting, from the tail-end node, the reachability information via an Interior Gateway Protocol (IGP) advertisement to a border router of the remote domain (remote border router); propagating the reachability information with one or more other border routers, at least one of the one or more other border routers being a border router in the local domain (local border router); and requesting, from the head-end node, that the local border router release the reachability information into the local domain.