A METHODOLOGY OF RESILIENT MPLS/VPN BACKUP PATH AVAILABILITY UNDER MULTIPLE LINK FAILURES

摘要

The present invention efficiently meets the user's traffic engineering recovery requirements in case of multipath failure in mesh type MPLS / VPN network and provides the availability of backup path in dynamic MPLS / VPN path in order to provide optimal backup path. It is about how to test. More specifically, the present invention receives a multi-failure notification message to pre-set the rules for the backup path design and to determine the availability of the backup path when a multi-path failure occurs in the mesh type MPLS / VPN network according to the set rule Updating the MPLS database based on the notified multiple failure notification message; and a maximum value for the availability condition of the k-protected backup path. Calculating a maximum value of the multi-failure notification message index and the availability condition of the k-protected backup path. To compare the message If it is larger, you can not be sure that there is a backup path, but if it is small, it has a step to find the optimal path and provides a method to efficiently check the availability of the backup path in the dynamic MPLS / VPN path. By satisfying the quality of service (QoS) requirements of the user, the most optimal backup path is provided to provide reliable services.;MPLS / VPN Network, QoS, Design Rules, Backup Path