Abstract: This paper reviews the works about router buffer sizing in Internet routers. In term of rapid development of real-time video operation, it studies the impact of small buffer on real-time traffic, and analyzes the impact on the performance of network based on NS2. It concludes that when load is lower, small buffer can suffice the requirement of real-time operation.

Key words: buffer, router, real-time video

摘要： 论述基于TCP协议模型的各种骨干路由器缓存容量研究成果。针对网络实时视频业务的发展，研究小缓存对网络实时视频流的影响，总结小缓存存在的不足，利用网络仿真工具NS2分析小缓存对网络性能的影响。实验结果表明，当链路利用率较低时，小缓存能够满足实时业务的性能要求。

关键词: 缓存, 路由器, 实时视频

CLC Number: 

• TP393