On The Break-even Point Between Cloud-Assisted and Legacy Routing

As more than 40K service providers are advertising 600K or more IP prefixes, scalability of routing has emerged to be a matter of great concern. In this paper, to explore a spectrum of designs, we consider a Cloud-Assisted Routing ( CAR) framework which follows a hybrid and opportunistic approach by keeping the high priority tasks at the router and use an adaptive router-cloud integration when beneficial. In particular, it maintains most of the control plane functions at the cloud and least of it at local router and vice versa for the data plane. Comparing the performance and monetary cost benefits between CAR, we discuss: i) What is the break-even point? ii) What are the key components of CAR to be monetarily beneficial? iii) What are the constraints that will make the traditional routing favorable than CAR?