Bundled protection switching in a wide area network

H - Electricity – 04 – Q

Patent

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Details

H04Q 1/18 (2006.01) H04B 1/74 (2006.01) H04L 1/22 (2006.01) H04L 29/14 (2006.01) H04Q 11/04 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2252807

Protection Bundles (PB) facilitate efficient protection switching in a network and can be applied at any network layer. A PB is preferably assigned to all working signals sharing the exact same protection facilities. The working facilities that a PB traverses define a Bundled Protection Fragment (BPF) (564, 568). The end-points of the BPF exchange coordination protocol messages along the protection facilities when necessary. The protection facilities between the end-points of a BPF define each BPF's Common Protection Route (CPR) (566, 570).

Des faisceaux de protection (PB) facilitent une commutation de protection efficace dans un réseau et peuvent être appliqués à n'importe quel couche de réseau. Un faisceau de protection est de préférence affecté à tous les signaux de travail partageant exactement les mêmes moyens de protection. Les moyens de travail traversés par un faisceau de protection définissent un fragment de protection en faisceaux (BPF) (564, 568). Les extrémités du BPF échangent des messages de protocole de coordination par les moyens de protection, lorsque cela est nécessaire. Les moyens de protection entre les extrémités d'un BPF définissent l'itinéraire de protection commun (CPR) (566, 570) de chaque BPF.

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