摘要： 介绍了一种适合负载较轻网络的可选择性启动机制—快启动机制(Quick-Start),该机制根据网络状况决定连接初始发送速率或初始拥塞窗口的大小,从而提高网络的利用率,缩短应用的响应时间。基于现有的慢启动机制和快启动的思想,介绍了快启动在TCP和IP中的实现,并就快启动机制在路由器上的资源分配进行了探讨,最后对两种启动机制进行了实验对比。

关键词: 快启动, 慢启动, TCP/IP, 资源分配

Abstract: This paper introduces an optional quick-start mechanism for the underutilized network. It determines the initial sending rate or initial congestion window at the start of a data transfer based on the utilization of the network. Quick-start is designed to allow TCP connections to use high initial sending rate in the circumstances where there is significant unused bandwidth along the path, and every routers along the path support the quick-start request. Firstly, this paper introduces the traditional slow-start and the main idea of the quick-start. Then it focuses on the implementation of quick-start in TCP and IP, especially the problem of source allocation on IP layer. At last, it compares quick-start with slow-start in ns2.

中图分类号: 

• TP393