Patent ID: 7697416
Filing Date: 2010-04-13
Classification: H04L

Abstract:
1. An apparatus for constructing a repair path in the event of non-availability of a component of a first routing domain comprising, as components, links and nodes, the apparatus comprising: one or more processors; and a network interface communicatively coupled to the one or more processors and configured to communicate one or more packet flows among the one or more processors in a network; and a non-statutory computer readable storage medium comprising one or more sequences of instructions for constructing a repair path which, when executed by the one or more processors, cause the one or more processors to perform: in the event of non-availability of the routing domain component between a first advertising node and a second advertising node, receiving a first network repair address from the first advertising node and a second network repair address from the second advertising node; determine an external path that comprises an external node that resides in a second routing domain that is external to the first routing domain; and advertising the second network repair address to one or more nodes coupled to the first advertising node via the external path.