Efficient intra-domain routing in packet-switched networks

H - Electricity – 04 – L

Patent

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H04L 12/56 (2006.01)

Patent

CA 2496345

The invention relates to the routing of data packets (IP packet) in a packet- switched network (N1), e.g. in an autonomous system, having traffic distribution. According to the invention, the forwarding or the routing of data packets (IP packet) occurs via the access interface based on an item of information (K1) and via the output interface of the data packet (IP packet) based on an item of information (K2). Both these items of information (K1, K2) are, for example at the input interface, placed in front of the data packet (IP packet) in the form of information fields or labels (IL, EL). The invention enables, with a moderate expense and limited degree of complexity, a flexible and loop-free routing under the terms of a traffic distribution.

L'invention concerne l'acheminement de paquets de données (paquet IP) dans un réseau de commutation par paquets (N1), par ex. un système autonome, à répartition du trafic. Dans le cadre de l'invention, la transmission ou l'acheminement des paquets de données (paquet IP) s'effectue sur la base d'une information (K1) par l'intermédiaire de l'interface d'accès et sur la base d'une information (K2) par l'intermédiaire de l'interface de sortie du paquet de données (paquet IP). Ces deux informations (K1, K2) sont présentées au paquet de données (paquet IP) sous forme de champs d'informations ou de libellés (IL, LE), par exemple au niveau de l'interface d'entrée. L'invention permet de parvenir à un acheminement souple et sans boucle en termes de répartition du trafic, avec une complexité limitée et des coûts modérés.

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