Multipath Aware TCP (MATCP)

On the Internet many different paths exist between each source and destination. When single path routing is used these paths can be under utilized, not used fairly or not used at all. One way to overcome this is to allow multi-path routing. But when multiple paths are used TCP con-gestion control can be negatively affected and cause poor goodput performance due to the reordering of packets. We proposeMATCP (Multipath Aware TCP) which makes mod-ifications to TCP that allows it to monitor and select which path it takes through the network for each flow. MATCP is compared to single path routing and is validated using extensive simulation. MATCP is found to greatly improve fairness between flows while providing equal or better uti-lization of links than single best path networks. 1