Patent ID: 11863430
Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A method comprising:
creating, by a processing system including a processor, a first list comprising a plurality of Shared Risk Link Groups (SRLGs), wherein the first list identifies for each Shared Risk Link Group (SRLG) in the list one or more associated link bundles of a plurality of link bundles, wherein the first list indicates for each link bundle a respective bandwidth loss, and wherein at least one of the bandwidth losses is such that the respective link bundle maintains at least some available bandwidth;
creating, by the processing system, a plurality of dominance relationships, wherein each dominance relationship comprises for two SRLGs an indication that one of the two SRLGs dominates another of the two SRLGs, and wherein the one of the two SRLGs dominating the another of the two SRLGs comprises: (a) the other of the two SRLGs having each associated failed link bundle also being failed by the one of the two SRLGs; and (b) each associated failed link bundle of the other of the two SRLGs having a respective bandwidth loss that is less than or equal to a respective bandwidth loss of the corresponding failed link bundle of the one of the two SRLGs;
creating, by the processing system, based at least in part upon the first list and the dominance relationships, a second list of SRLGs, wherein the second list of SRLGs comprises a subset of the first list of SRLGs; and
facilitating, by the processing system, use of the second list of SRLGs to modify flow of traffic on a communications network.