区分服务中一种拥塞感知的单速三色标记算法

确保服务的实现依赖于在边界路由器执行的数据包标记策略和在核心路由器执行的队列管理策略.TCP流由于其拥塞自适应的特点对丢包很敏感,网络拥塞对其吞吐量影响很大.为此,我们设计了一种拥塞感知的单速三色标记算法CASR3CM.仿真实验表明,该算法不仅提高了AS TCP流的平均吞吐量,而且增强了吞吐量的稳定性.另外该算法也提高了AS TCP流之间占用带宽的公平性.

A Congestion Aware Single Rate Three-Color Marker for Differentiated Services

The Assured Services architecture relies on packet marking mechanism at the edge router,and queue management mechanism at the core router.Due to its self-adaptive congestion,TCP flows are much more sensitive to packet drops,especially to multiple drops,therefore when network congestion happened,the throughput of TCP flows is greatly influenced.We design a new marker called CASR3CM (Congestion Aware Single Rate-Three Color Marker).The simulation results indicate that the marker not only improves the throughput of AS TCP flow,the stability of the throughput,but also improves the fairness of bandwidth sharing between AS TCP flows.