Reconfigurable Path Restoration Schemes for MPLS Networks

Multi-Protocol Label Switching (MPLS) is an alternative to integrate the traditional InternetProtocol (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, MPLSmust use path restoration schemes to guarantee the delivery of packets through a network. In this paperwe present three reconfigurable architectures for the implementation of path restoration schemes, namely, Haskin, Makam, and Simple Dynamic. These schemes are implemented using an entity-basedmodel that provides the advantage of reusability of entities, thus reducing the overall resource utilisation. The results show that Haskin and Makam schemes present similar resource utilisation. On the otherhand, the simple dynamic scheme uses a similar entity-based model that provides a slight decrease inpercentage utilisation when compared to those obtained for the two aforementioned schemes