On Selection of Paths for Multipath Routing

Abstract. Multipath routing schemes distribute traffic among multiple paths instead of routing all the traffic along a single path. Two key questions that arise in multipath routing are how many paths are needed and how to select these paths. Clearly, the number and the quality of the paths selected dictate the performance of a multipath routing scheme. We address these issues in the context of the proportional routing paradigm where the traffic is proportioned among a few “good” paths instead of routing it all along the “best” path. We propose a hybrid approach that uses both globally exchanged link state metrics — to identify a set of good paths, and locally collected path state metrics — for proportioning traffic among the selected paths. We compare the performance of our approach with that of global optimal proportioning and show that the proposed approach yields near-optimal performance using only a few paths. We also demonstrate that the proposed scheme yields muc...

• Type: Conference
• Year: 2001
• Where: IWQOS
• Authors: Srihari Nelakuditi, Zhi-Li Zhang
• Keywords: Communications, IWQOS 2001, Multipath Routing, Multipath Routing Scheme, Multiple Paths