核心路由器的拥塞会导致吞吐量下降,网络效率降低,对整个网络的正常运转有很大的影响,最终可能导致网络崩溃．随着Internet的发展,人们越来越关注网络的性能,核心路由器的性能又关系到整个网络正常运行,因此对核心路由器拥塞控制的研究成为当今研究的热点问题．本文分析了核心路由器上拥塞产生的原因,以及解决这些问题所采取的控制策略． Congestion on the core router results in a decrease in throughput and a reduction in network efficiency, which can greatly affect the normal operation of the entire network and eventually lead to network crashes. With the development of the Internet, people pay more and more attention to the performance of the network. The performance of the core router is related to the normal operation of the entire network. Therefore, the research on the congestion control of the core router has become a hot issue in current research. This paper analyzes the causes of congestion on the core routers and the control strategies adopted to solve these problems.