SERVICE CROSS-LAYER SEPARATED PATH CALCULATION METHOD, DEVICE AND COMMUNICATION SYSTEM

摘要

The present invention provides a method and an apparatus for computing cross-layer separated service paths, and a communications system. The method includes: acquiring path information about two physical-layer separated paths from a service starting point to a service end point on a physical network; updating a link cost of each IP link segment on a router network according to the path information about the two physical-layer separated paths; and computing path information about two corresponding router-layer separated paths on the router network according to the updated link cost of each IP link segment. The technical solutions provided in embodiments of the present invention can ensure that an appropriate physical-layer pipe resource is allocated for each router-layer separated path and avoid service congestion due to an algorithm.