IP路由器体系结构的综合研究

Comprehensive Study of IP Router Architecture

1 引言 交换节点的资源路由调度是保证实时业务服务质量和提高网络资源利用率的关键[1].从研究趋势看,路由技术的发展已经和交换技术以及宽带技术的发展有机地结合在一起.路由器通常把数据包从一个数据链路中继到另一数据链路.为了中转数据包,路由器具有两个基本功能:路径判断和交换.近年来,国际上对宽带IP技术上的研究也日益活跃.下面就IP路由器体系结构进行综合研究.

With Internet and increasing development of broadband technology ,the speed of packets forwarding needs to be over gigabits per second for the backbone routers. Traditional routers have some insuperable barriers and can not solve the problem based oh shared-bus and central processing unit. It is great challenge for future router architecture. In this paper,the authors survey the recent advances in the research of broadband IP switch router,and analyze the architecture design of the fourth generation backbone router in detail. Finally,some comprehensive appraising towards router architecture are identified.