因特网路由器拥塞控制算法

Congestion Control Algorithm for Internet Router—WRED

近年来因特网上业务量爆炸性增长使网络日益拥塞。为了使网络从拥塞中解脱出来，在TCP配置中采用了慢启动和拥塞回避的策略。虽然在发送端TCP可以进行拥塞的检测和回避，但因为只有路由器才能对不同时间段的业务量进行统一的考查，所以最有效的拥塞检测和回避是在路由器中实现的。具有WRED功能的路由器通过监视平均队列长度的变化可以检测早期的拥塞。

In recent years, the Internet becomes muchmore congested than ever before. In order to alleviatethe congestion of Internet, an effective congestioncontrol strategy must be adopted in hackbone routers.In this paper, congestion detection/avoidance schemesare analyzed in flow source and Internet router.Weighted Random Early Detection (WRED) algorithmand the implementations of WRED routers are alsoconsidered in this paper.