Huawei Technologies

A method and system of multiple domain route computation. The method and system map a computation domain of Path Computation Element in the upper and lower layers of Path Computation Elements by hierarchizing Path Computational Elements, carry on the hierarchical decomposition of computation tasks and carry on route computation in a parallel mode, therefore finally accomplish multiple domain route computation. They create the paths of signalings after accomplishing the route computation to detach routes and signalings.

PCT/CN2007/001717