Atm switch in dual switch plane operation

H - Electricity – 04 – L

Patent

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Details

H04L 12/56 (2006.01) H04L 29/14 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2172262

A novel ATM switch of dual switch plane operation and method of switching traffic in unit cells among ports in dual switch planes are disclosed. The ATM switch of the invention is plane protected in that a redundant switch plane is provided. In the switch, traffic cells are tagged either symmetric or asymmetric at an ingress port so that a destination port is able to properly gather correct cells even when switch planes develop faults or quality degradation.

Nouveau commutateur à mode de transfert asynchrone (ATM) utilisé selon un mode de fonctionnement à plan de commutation double, et procédé de commutation de trafic dans des cellules unitaires entre des ports dans des plans de commutation doubles. Le commutateur ATM selon l'invention est protégé contre les défauts de plan dans la mesure où un plan de commutation redondant est prévu. Dans ce commutateur, des cellules de trafic sont étiquetées comme étant soit symétriques soit asymétriques au niveau d'un port d'entrée, de sorte qu'un port destinataire soit capable de rassembler de manière appropriée les cellules correctes, même lorsque les plans de commutation présentent des défauts ou une dégradation de la qualité.

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