AN IMPLEMENTING METHOD FOR DETECTING THE LEGITIMACY OF LABEL MESSAGE PATH

摘要

An implementing method for detecting the legitimacy of label message path includes a label path legitimacy detection command configuration module, a label path legitimacy detection table distribution module and a label message path legitimacy detection forwarding module. The method also includes configuring the policy for initiating label path legitimacy detection; configuring the policy associated with the label distribution protocol; when establishing the label forwarding table, establishing a path legitimacy detection entry according to the configured label distribution protocol; when receiving said label message, searching said path legitimacy detection table based on the ingress label, detecting the legitimacy of said label message based on said configured path legitimacy detection policy, and determining to discard the message or continue transmitting the message according to the detecting result. The system and method of present invention prevent the illegal label message in MPLS network effectively, can utilize the MPLS network bandwidth farthest, and ensure the investment benefit of device manufacturers.