A method and a system for interconnecting ring networks

Details A method and a system for interconnecting ring networks A method and a system for interconnecting ring networks

H - Electricity

04

L

H04L 12/46 (2006.01) H04J 3/08 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2294796

The present invention relates to a system and a method for protecting an interconnection between two ring networks (1, 2). Each ring network (1, 2) comprises two communication paths (3, 4, 5, 6) and at least one node connected to both communication paths (3, 4, 5, 6). The two ring networks (1, 2) are interconnected via two gateways (7, 8). Each gateway (7, 8) is arranged to receive traffic from both communication paths (3, 4, 5, 6) on one ring network (1, 2) and to transmit said traffic to the other ring network (1, 2) on the communication path (3, 4, 5, 6) directed from the other gateway (7, 8). According to the invention the traffic is stopped in both directions in an inactive segment (13a, 13b) on each ring network, so that a node situated on a ring network (1, 2) receives traffic from only one of the two gateways (7, 8).

L'invention concerne un système et un procédé destinés à protéger une interconnexion entre deux réseaux en anneaux (1, 2). Chaque réseau en anneau (1, 2) comprend deux voies de communication (3, 4, 5, 6) et au moins un noeud relié aux deux voies de communication (3, 4, 5, 6). Ces deux réseaux en anneaux (1, 2) sont interconnectés par deux passerelles (7, 8). Chaque passerelle (7, 8) est conçue pour recevoir le trafic issu des deux voies de communication (3, 4, 5, 6) d'un réseau en anneau (1, 2) et le transmettre à l'autre réseau en anneau (1, 2) par la voie de communication (3, 4, 5, 6) dirigée à partir de l'autre passerelle (7, 8). Selon l'invention, le trafic est arrêté dans les deux sens dans un segment inactif (13a, 13b) de chaque réseau en anneau, de telle façon qu'un noeud situé sur un réseau en anneau (1, 2) reçoit seulement le trafic issu d'une des deux passerelles (7, 8).

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