An integrated design of multipath routing with failure survivability in MPLS networks

Multipath routing employs multiple parallel paths between the source and destination for a connection request to improve resource utilization of a network. In this paper, we provide an integrated design of multipath routing in MPLS networks. In addition, we take into account the quality of service (QoS) in carrying delay-sensitive traffic and failure survivability in the design. Path protection or restoration policies enables the network to accommodate link failures and avoid traffic loss. We evaluate the performance of the proposed schemes in terms of call blocking probability, network resource utilization and load balancing factor. The results demonstrate that the proposed integrated design framework can provide effective network failure survivability, and also achieve better load balancing and/or higher network resource utilization