A RESOURCE MANAGEMENT AND RECURSIVE PATH COMPUTATION FOR REAL-TIME AUTOMATIC PATH SETUP AT MULTI-LAYER TRANSPORT NETWORK

摘要

PURPOSE: A method for calculating a recursive path and managing resources necessary for computation of a multi-layered resource transmission network path and a device therefor are provided to prevent a route computation failure due to shortages of resources in a constant layer. CONSTITUTION: A path calculation engine receives a patch calculation request for transmission service of an N layer. The path calculation engine searches a TE link resource of the N layer based on TE(Traffic Engineering) database. The path calculation engine repeats a route computation request and a route computation request of a lower layer until all route computation is completed.