Fast protection in ring topologies

Multiplex communications – Fault recovery – Bypass an inoperative channel

Reexamination Certificate

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C370S529000

Reexamination Certificate

active

07061859

ABSTRACT:
In a bidirectional ring network, in which nodes are mutually connected by network segments, a method of fault protection includes constructing a general mask indicating which of the segments can be reached. For a given data flow to be conveyed through the network from a source node to a destination node, a specific mask is constructed indicating the segments on a desired path of the flow. The general and specific masks are superimposed in order to determine a disposition of the flow.

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