MPLS QoS-Aware Traffic Engineering for Network Resilience

This paper extends the Shortest-Distance (SD) routing algorithm to build resilient MPLS networks. The objective is to select paths with high connection availability, while at the same time optimising network resource consumption. The objective is achieved by using the link availability parameter in different ways in the cost function to select a path with high reliability. Having mathematically formulated the relevant traffic engineering problem and proposed algorithms to solve it, simulation results show that the algorithms provide routes with higher protection levels in comparison to the SD algorithm.