Link based alternative routing scheme for network restoration under failure
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United States of America Patent
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Oct 31, 2000
Grant Date -
N/A
app pub date -
Apr 10, 1996
filing date -
Apr 10, 1996
priority date (Note) -
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Abstract
Alternative routing schemes in high-speed networks ensure fault tolerance in the event of a link failure. An heuristic algorithm, based on maximal-flow algorithm, is first used to partition the network into parts: one part carries regular or primary traffic and another part is reserved to carry re-routed traffic in the event of a link failure. The result of applying the algorithm is used to find alternative routes for a given call at the time of call setup. The scheme can be modified to accommodate hop-court limitations and loop avoidance.
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