Date Added: Apr 2009
Multi-Protocol Label Switching (MPLS) is an alternative to integrate the traditional Internet Protocol (IP) routing and switching technologies because it provides end-to-end Quality of Service (QoS), guarantees Traffic Engineering, and support Virtual Private Networks (VPNs). However, MPLS must use path restoration schemes to guarantee the delivery of packets through a network. In this paper, the authors present three reconfigurable architectures for the implementation of path restoration schemes, namely, Haskin, Makam, and Simple Dynamic. These schemes are implemented using an entity-based model that provides the advantage of reusability of entities, thus reducing the overall resource utilisation.