Distribution of reachability information in data virtual...

Details Distribution of reachability information in data virtual... Distribution of reachability information in data virtual...

H - Electricity

04

L

H04L 12/26 (2006.01) H04L 12/24 (2006.01) H04L 12/46 (2006.01)

Patent

CA 2290055

In methods and apparatus for acquiring VPN reachability information at a node of a data network, a VPN reachability information request is transmitted from a requesting node. The VPN reachability information request comprises a VPN identifier. Other nodes of the data network receive the VPN reachability information request and, if they have reachability information relevant to that VPN, they transmit such information to the requesting node where it is received and stored. The invention can be used in MPLS VPN architectures.

Au moyen de méthodes et d'un appareil d'acquisition de l'information d'accès à un RPV sur un noud de réseau de données, une demande d'information d'accès à un RPV est transmise par un noud demandeur. La demande d'information d'accès à un RPV comprend un identifiant VPN. D'autres noeuds du réseau de données reçoivent la demande d'information d'accès au RPV; s'ils disposent de l'information d'accès sur ce RPV, ils la transmettent au noeud demandeur, où elle est reçue et stockée. L'invention est utile dans les architectures de RPV à commutation multiprotocole par étiquette.

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