Inter-domain TE-LSP with IGP extensions

Details Inter-domain TE-LSP with IGP extensions Inter-domain TE-LSP with IGP extensions

2004-12-01

2008-12-02

Moore, Jr., Michael J (Department: 2419)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S392000, C370S401000

Reexamination Certificate

active

07460481

ABSTRACT:
A technique propagates 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 preferably spans multiple domains of the network such that the tail-end node resides in a domain that is different (remote) from the domain of the head-end node. The inter-domain information propagation technique employs an Interior Gateway Protocol (IGP) to transmit the remote reachability information from a target node residing in the same domain as the tail-end node to the head-end node. The head-end node uses the remote information to calculate routes, i.e., address prefixes and associated attributes, reachable from the tail-end node for insertion into its routing table.

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