CCOF: Congestion control on the fly for Inter-Domain routing

We design a new routing system called CCOF in which border routers of autonomous systems (AS) adaptively redirect outbound traffic from a congested default path to an alternative path in favor of Inter Domain traffic engineering (TE). We show how this can be done simply, by examining outgoing port's queuing size, and efficiently, that maintains line speed forwarding. In addition, CCOF-router is completely compatible with legacy routers since it neither requires cooperation nor modifies the packet content. Our evaluation shows that CCOF significantly increases the average throughput of traffic flows, and has similar improvement as directly upgrading device capacity. Finally, prototype implementation is achieved on NetFPGA.