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

摘要

Provided are a service cross-layer separated path calculation method, device and a communication system. The method includes: acquiring path information about two physical layer separated paths from a service starting point to a service end point in a physical network; updating the link cost of each IP link segment over a router network according to the path information about the two physical layer separated paths; calculating the path information about two corresponding router layer separated paths over the router network according to the updated link cost of each IP link segment. The technical solution provided in the embodiments of the present invention can ensure that suitable physical layer tube resources can be allocated to each router layer separated path, avoiding service congestion caused by algorithms.