METHOD OF SUPPLYING A LINK STATE FOR TRAFFIC ENGINEERING AND A DEVICE THEREFOR, REGARDING TO SUPPLYING HIGH VALUE-ADDED SERVICE

摘要

PURPOSE: A method of supplying a link state for traffic engineering and a device therefor are provided to collect/distribute link state information frequently changing according to a canceled path based on traffic engineering, and to use the information for setting an optimal path which satisfies constraints, thereby supplying high value-added service. CONSTITUTION: A system initializes a link state of a network, and configures traffic engineering topology information(S301-S304). The system calculates a path for a service connection setup request which satisfies new constraints from an operator(S305-S307). The system sets a path according to the calculated path(S308-S312). The system changes information on the link state in accordance with the set path(S313-S316). The system floods the changed information on the link state, and synchronizes the traffic engineering topology information(S317,S318).