Inter-domain, MPLS restoration

Several MPLS (multiprotocol label switching) based protection mechanisms have been proposed, such as end-to-end path protection and local repair mechanism. Those mechanisms are designed for intra-domain recoveries and little or no attention has been given to the case of crossing nonhomogenous independent domains. This paper presents a novel solution for the setup and maintenance of independent protection mechanisms within individual domains and merged at the domain boundaries. This innovative solution offers significant advantages including fast recovery across multiple nonhomogeneous domains and high scalability. Simulation results using OPNET are presented showing the advantage and feasibility of our proposed approach.