A novel path protection scheme for MPLS networks using multi-path routing
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Broadband integrated services digitalnetworks (B-ISDN) are aimed to transport both realtime traffic and non real-time traffic. Many of theseapplications require Quality of Service (QoS) guarantees.In the literature, not much work is found to provideQoS guarantees based on fault tolerance. In this work,reliability of network links is considered as one of the parameters when providing QoS guarantees to applications.Considering reliability of network links as a parameterfor QoS guarantees gives the applications more flexibilityin choosing the network resources. A new terminologyfor dispersity routing is presented which will be useful inproviding QoS guarantees based on reliability. Dispersityrouting transmits the traffic along multiple paths. Also, areliable backup resource allocation method is presentedthat can be used in the context of dispersity routing for faulttolerant real-time networks. Here, an assumption is madethat higher capacity is assigned to the links which are morereliable. This will help in availability of resources for alonger period of time. Also, reliability of links is consideredto compute multiple paths along with shortest path metric.