| 摘要 |
A method for supporting recovery from failure of a link in a network of nodes interconnected by links comprises: (a) selecting an intermediate node between an ingress point and an egress point of the network, wherein the intermediate node minimizes the sum of (i) a capacity constraint between the ingress point and the intermediate node and (ii) a capacity constraint between the intermediate node and the egress point; wherein the selection identifies a first path structure between the ingress point and the intermediate node, and a second path structure between the intermediate node and the egress point, each path structure comprising a primary path and one or more link backup detours protecting each link on the primary path; (b) implementing, during a first routing phase, a first routing method for routing a fraction of a service level between the ingress point and the intermediate node along the primary path of the first path structure; and (c) implementing, during a second routing phase, a second routing method for routing a fraction of the service level between the intermediate node and the egress point along the primary path of the second path structure.
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