Delivering a File by Multipath-Multicast on OpenFlow Networks

Rapid penetration of cloud computing has resulted in increasingly large file transfers among distributed data centers, leading to increased transmission delays. We propose a multipath multicast (MPMC) file transfer scheme to reduce transmission delays of one-to-many file transfers. The proposed scheme aims to (i) fully utilize the possible network bandwidth by transmitting segments (chunks) of a file simultaneously on multiple paths and (ii) reduce the bandwidth required to deliver a file to multiple receivers by multicasting the segments. On the basis of the maxflow problem, the scheme performs file segmentation, construction of multiple multicast trees, and segment transfer scheduling using multiple multicasts. To demonstrate the feasibility of MPMC file transfer, we develop a prototype system of our proposal for MPMC file transfers on OpenFlow networks.