Patent ID: 7881211
Filing Date: 2011-02-01
Classification: H04J,H04L,H04Q

Abstract:
1. A method implemented using a computer for localizing a failure at a link between two nodes in a data network of nodes, wherein data, introduced into the network at a source node, proceeds along a known path comprising a plurality of links, and exits the network at a sink node, the method comprising: a) receiving at least one fault alarm associated with at least one alarming sink indicating at least one failed link in its associated path; b) designating at least one alarming sink as an executive sink having an associated affected path; c) generating a response as to the health of a path associated with at least one other sink and identification of which links in the path associated with the at least one other sink are common to the affected path; d) from the response from at least one other sink, identifying as healthy, those links, in the path associated with the at least one other sink, which are: e) repeating step d) for each response from each at least one other sink until only one link in the affected path has not been identified as healthy; and f) identifying the remaining link as the failed link.