Computing a path for an open ended uni-directional path...

H - Electricity – 04 – L

Patent

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H04L 12/42 (2006.01) H04B 10/02 (2006.01) H04B 10/12 (2006.01) H04L 9/00 (2006.01) H04L 29/00 (2006.01)

Patent

CA 2521518

Methods and apparatus for enabling a protected circuit path to be created efficiently are disclosed. In accordance with one embodiment of the present invention, a method for creating a protected circuit path within an optical network system includes identifying a first node, a second node, and a third node. Once the nodes are identified, a pseudo link or a virtual link may be created between the second node and the third node. A first circuit path is then routed between the first node and the second node, and a second circuit path which protects that first circuit path is routed between the first node and the third node using the pseudo link.

L'invention concerne des procédés et des appareils destinés à permettre à un chemin de circuit protégé d'être créé efficacement. Dans un mode de réalisation de l'invention, un procédé de création d'un chemin de circuit protégé dans un système de réseau optique consiste à identifier un premier noeud, un deuxième noeud et un troisième noeud. Une fois les noeuds identifiés, une pseudo-liaison ou une liaison virtuelle peut être créée entre le second noeud et le troisième noeud. Un premier chemin de circuit est ensuite formé entre le premier noeud et le deuxième noeud, et un deuxième noeud de circuit qui protège le premier chemin de circuit est formé entre le premier et le troisième noeud au moyen de la pseudo-liaison.

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