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AssigneeAT&T Intellectual Property II, L.P.
InventorsKadangode K. Ramakrishnan, Mukul Goyal
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A method and apparatus for increasing the capability of a network topology model having a plurality of nodes connected by existing links to maintain service continuity in the presence of faults. The steps of the method include adding new links to the network topology model to protect against single node failures, and adjusting link weights for the network topology model to reduce at least one of a cost of network operation and an imbalance in link utilizations. Preferably, the link weights are adjusted to reduce the imbalance in link utilizations without deteriorating the cost of network operation. The link weights are preferably adjusted to reduce the cost of network operation without increasing the imbalance in link utilizations. Preferably, the link weights are adjusted to reduce the cost of network operation without increasing the imbalance in link utilizations while keeping the utilization for each link below a specific threshold. In addition, links can be added to the network topology model to reduce the cost of network operation.
A method for increasing the capability of a network topology model having a plurality of nodes connected by existing links to maintain service continuity in the presence of faults, said method comprising:
A method for adding new links to a network topology model having a plurality of nodes connected by existing links to achieve protection against single node failures for Open Shortest Path First (OSPF) and Multiprotocol Label Switching (MPLS) based local recovery, said method comprising the steps of:
A method for adjusting link weights for a network topology model having a plurality of nodes connected by links to reduce the cost of network operation, said method comprising the steps of:
A method of adjusting link weights in a network topology model having a plurality of nodes connected by links to reduce an imbalance in link utilizations, said method comprising the steps of:
A method of adjusting link weights in a network topology model having a plurality of nodes connected by links to reduce an imbalance in link utilizations without deteriorating the cost of network operation, said method comprising the steps of:
A method of adjusting link weights in a network topology model having a plurality of nodes connected by links to reduce the cost of network operation without increasing an imbalance in link utilizations, said method comprising the steps of:
A computer-readable storage medium comprising instructions for increasing the capability of a network topology model having a plurality of nodes connected by existing links to maintain service continuity in the presence of faults that, when executed by a processor, causes the processor to:
An apparatus for increasing the capability of a network topology model having a plurality of nodes connected by existing links to maintain service continuity in the presence of faults, said apparatus comprising:
Dependencies are inferred from the claim text.