Transmission Control Protocol with Fast Feedback in Data Center Network
SU Fanju · Jisuanji gongcheng · 2015
In Data Center Network( DCN),Transmission Control Protocol( TCP) Incast occurs frequently when multiple servers send data to the same receiving end in parallel. Data traffic overflow s the buffer at the bottleneck sw itch,leading to packet losses and subsequently TCP retransmissions. To solve TCP Incast problem,this paper presents TCP w ith fast feedback in DCN( FFDTCP). The congestion control algorithm of FFDTCP is based on Explicit Congestion Notification( ECN) and uses two bits to indicate four levels of congestion degree,then senders adjust congestion window according to the congestion information to achieve the purpose of reducing congestion and avoiding bottleneck link packet loss,leads to a sharp decline in throughput problem. NS2 simulation result show s that the algorithm can guarantee low er latency and higher throughput,effectively mitigate the TCP Incast problem and improve the transmission performance of DCN.