TCP Reno and Vegas co-existence

Several studies have been made comparing performance and fairness of different congestion control algorithms including TCP Reno and TCP Vegas. Those studies primarily focused on showing the advantages of TCP Vegas over TCP Reno in terms of performance, efficiency and fairness, and they show that Reno dominates Vegas in shared network environments. This work presents detailed analysis of the performance observed when a Reno flow and a Vegas flow coexist. Several experiments were performed using file transfers between a server and client: starting Reno first, starting Vegas first, and starting both simultaneously. As a baseline, we also run Reno and Vegas separately. For each experiment we observe and compare measurements such as throughput, window size, RTT and estimated fairness.