Importance

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Abstract

A method for controlling virtual connections between endpoints over a unidirectional ring network. The network includes a number of network elements coupled together to form segments of the ring network. The method receives a request to create a virtual connection between first and second endpoints on the ring network. The method identifies the segments of the ring network that would be affected by the addition of the connection between the first and second endpoints. Further, the method retrieves data that represents the currently allocated capacity for each affected segment. For each affected segment, the method determines whether adding the requested virtual connection would exceed the capacity for the segment. The method transmits signals over the ring to establish the virtual connection when adding the virtual connection does not exceed the capacity for any of the affected segments.

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First Claim