Multiplex communications – Data flow congestion prevention or control
Reexamination Certificate
2011-03-22
2011-03-22
Pham, Chi H (Department: 2471)
Multiplex communications
Data flow congestion prevention or control
Reexamination Certificate
active
07911944
ABSTRACT:
A consistent tie-breaking decision between equal-cost shortest (lowest cost) paths is achieved by comparing an ordered set of node identifiers for each of a plurality of end-to-end paths. Alternatively, the same results can be achieved, on-the-fly, as a shortest path tree is constructed, by making a selection of an equal-cost path using the node identifiers of the diverging branches of the tree. Both variants allow a consistent selection to be made of equal-cost paths, regardless of where in the network the shortest paths are calculated. This ensures that traffic flow between any two nodes, in both the forward and reverse directions, will always follow the same path through the network.
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Allan David
Ashwood Smith Peter
Bragg Nigel
Chiabaut Jerome
Ng Fan
Nortel Networks Limited
Pham Chi H
Trop Pruner & Hu P.C.
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