Multipath interdomain routing via deviation from primary path

Multi-path routing is a promising technique to increase the Internet´s reliability and to give users greater control over the service they receive. Currently the interdomain routing protocol limits each router to using a single route for same destination, which may not satisfy the diverse requirements of end users. In this paper, in order to support the effective and efficient multi-path service(MPS), we propose a multi-path inter-domain routing via deviation from primary path(MIR-DPP) which includes two main steps as following. Firstly, to improve the path diversity of node pairs, the special topology collected from neighboring ASes around the primary path, and the multipath set is calculated by our multipath discovery method. Secondly, to gain high-quality paths which are not compliant with routing policy, a negotiation mechanism is designed to address policy limits. Experiments with Internet topology and routing data demonstrate that MIR-DPP offers tremendous flexibility and diversity for path selection with reasonable overhead.