Orange

France Telecom

Marc-Olivier Buob

Bruno Decraene

Anthony Lambert

In a packet communication network comprising a plurality of nodes connected by respective links according to a routing topology, ordered metrics are respectively associated with links each connecting two nodes together directly. On detection of a modification of the routing topology, at the level of a first node connected by a link to at least one second node, a timer value associated with the second node is determined. Next, the timer is set. Finally, on expiring of this timer, a topology update message is emitted destined for the second node. The timer value is provided by an increasing function taking as parameter the metric associated with said link connecting the first node to the second node, so that the larger the metric, the larger the timer value.

Management of routing topology in a network

An autonomous system comprises a plurality of routers within a packet transmission network, respective links joining the routers according to a topology of routers. At the level of a first router of the autonomous system which is joined to a second router, for a route exiting the autonomous system through an exit router, a path is determined between the second router and the exit router according to performance criteria. Next, the route is announced to the second router if the first router is situated on the previously determined path.

Growing community of inventors

Issy les Moulineaux, France

Marc-Olivier Buob