Method for recursive bgp route updates in mpls networks

H - Electricity – 04 – L

Patent

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H04L 12/66 (2006.01)

Patent

CA 2519976

A method for providing BGP route updates in an MPLS network is disclosed. The route update is performed at a router having a forwarding information table containing BGP routes and an internal label, and an adjacency table containing BGP/VPN labels and said internal label. The internal label corresponds to at least one IGP route and has an adjacency associated therewith. The method includes updating the adjacency associated with the internal label following an IGP route change.

La présente invention concerne un procédé permettant d'effectuer des mises à jour de routage par protocole BGP dans un réseau à commutation multi-protocole par étiquette (MPLS). La mise à jour du routage est effectuée au niveau d'un routeur ayant une table d'informations d'acheminement contenant des routages BGP et une étiquette interne, et une table de contiguïté contenant des étiquettes BGP/VPN ainsi que ladite étiquette interne. L'étiquette interne correspond à au moins un routage IGP et il possède une contiguïté qui lui est associée. Le procédé consiste à mettre à jour la contiguïté associée à l'étiquette interne à la suite d'un changement de routage IGP.

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