Estimating network-layer topology using end-to-end measurements

Details Estimating network-layer topology using end-to-end measurements Estimating network-layer topology using end-to-end measurements

H - Electricity

04

L

H04L 12/26 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2641197

A method for estimating the network-layer topology of a telecommunications network is described. In particular, the illustrative embodiment of the present invention estimates the existence and connectivity of nodes in the topology based on the detection of network-wide end-to-end path intersections. This is based on the assumption that pairs of streams of packets that share a common node will interfere and that the interference can be detected in the received streams. In general, this interference is manifested as jitter. By transmitting streams on each pair of end-to-end paths in the network, and detecting interference (or a lack of interference) a matrix of path intersections for the network can be created. Using logic and supposition, the topology of the network can be estimated using the matrix of path intersections. Once the estimate of the topology is complete, the maintenance and operation of the network can proceed based on the topology.

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