ns3multipath

Topology for multipath IP experiment . . . Nowadays mobile equipment have often more than one single network interface. For instance, laptops have usually at least both a wired (Ethernet) and a wireless (Wifi) network adapters. Similarly smartphones and tablet PCs can reach the Internet either through Wifi or through a cellular network (UMTS or 3G+). Another fact is that network operators usually duplicate links and equipments in order to protect their networks against failures, especially in the access and the backhaul networks. Moreover the backbone networks are generally meshed. In this context many paths may exist between any two endpoints. The idea to use concurrently many paths has then emerged, to improve the robustness and performance of end-to-end connections. Such multipath connections can indeed balance the load between the different paths, switching dynamically and automatically the traffic from congested, disrupted or broken links to the best paths.