Service differentiation and performance of weighted window-based congestion control and packet marking algorithms in ECN networks

Abstract

We investigate the service differentiation, in terms of average throughput, and the performance achieved using weighted window-based congestion control in networks supporting Explicit Congestion Notification (ECN). Our results show how service differentiation, queueing delay, and average throughput are affected by the increase and decrease rules of the end-system congestion control algorithms, and how they depend on the marking algorithms operating in the routers. The end-system algorithms we investigate include Willingness-To-Pay (willingness-to-pay) and MulTCP congestion control, and the packet marking algorithms include RED, virtual queue marking, and load-based marking. Our investigations consider both single and multiple link topologies, and connections with different round trip times.