Sizing buffer of router with pacing mechanism

Pacing mechanism reduces the traffic burst in the network and it also decreases the router buffer size in the link with only TCP flows. In this paper, it is investigated in full scale the performance of the bottleneck link with both TCP and TFRC flows while changing the router buffer size. The results show that, with paced TCP traffic, small router buffer are sufficient to achieve link utilization level above 90% with reasonable loss rate. In addition, the fairness is of high degree when the bottleneck link is shared by TCP and TFRC flows.