AuthorsT. Elhourani, S. Ramasubramanian and A. Kvalbein
EditorsF. T. e. al.
TitleEnhancing Shortest Path Routing for Resilience and Load Balancing
Afilliation, Communication Systems
Publication TypeProceedings, refereed
Year of Publication2011
Conference NameProceedings, International Conference on Communications 2011
Date PublishedJune
ISBN Numberxx

This paper develops a new resilient multipath routing technique, referred to as SPT-DAG, that has the following characteristics: (1) provides multipath routing over directed acyclic graphs (DAG); (2) the shortest path tree is guaranteed to be part of the DAG; and (3) provides guaranteed recovery from single link failures. We develop a polynomial time algorithm to compute the SPT-DAG and a routing protocol to forward packets over the SPT-DAG using one overhead bit in the packet. We consider different load-balancing approaches for forwarding a packet when the packet has not encountered a failure. Through extensive flow-based simulations, we show that the SPT-DAG performs significantly better than those approaches that exclusively target load balancing or resiliency.

Citation KeySimula.simula.281