Fast TCP是近年来发展起来的一种适用于大带宽-时延积网络的TCP协议,其采用主动的队列管理方式有效的避免了网络中拥塞现象的发生。本文结合T比特路由器的设计需求,对现有的Fast TCP改进后,将其应用到了T比特路由器的内部通信子系统中。 关键字:Fast TCP;拥塞控制;T比特路由器;稳定性 Abstract: Fast TCP is a new TCP protocol which appeared in recent years, it fitted for networks which have large bandwidth-delay product. It used Active Queue Management and avoided the congestion in networks effectively. We analyzed the design requirement of T bit router and improved current Fast TCP. After that, we applied new Fast TCP to internal subsystem communication in T bit router. Keywords: Fast TCP, congestion control algorithm, T bit router, stability