France Telecom

Nicolas Dubois

Bruno Decraene

Benoit Fondeviole

A packet transmission network, a plurality of routers have sessions among them based on a routing protocol to exchange routing and/or connectivity data indicating paths for transmitting packets over the network. Each router maintains a first routing table including data sent to another of said routers, and a second routing table including data received from another of said routers. To close at least part of the sessions of a given router, the method consists: in listing the data corresponding to the part of the sessions and contained in at least one of the first and second routing tables; sending an updating message based on the protocol indicating to neighboring routers that the paths indicated in the data are considered out-of-service; then closing the part of the sessions. The router continues transmitting packets emitted on the paths considered out-of-service until the closing step.

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Issy les Moulineaux, France

Nicolas Dubois