A Delay Based TCP for Data Center Networks
Wan Chen Chang, Yi Cheng Chan · 2016
TCP Incast is a pathological behavior of TCP that results in gross under-utilization of link capacity in certain many-to-one communication patterns.The many-to-one communication is the main transmission mode in data center networks.In this paper, we modify the most famous delaybased TCP, Vegas, and propose a new congestion control mechanism for data center networks.The proposed DCVegas can quickly and appropriately adjust its congestion window size without the special help of the intermediate nodes.Through extensive NS-2 simulations, the results of DCVegas are compared with that of IA-TCP and TCP NewReno.DCVegas outperforms IA-TCP and NewReno in a variety of conditions.The proposed DCVegas maintains the end-to-end approach and effectively avoids the occurrence of TCP Incast in data center networks.