由于 Internet的迅速发展 ,要求它能支持各种不同 Qo S要求的业务 ,包括低时延的实时业务 ,有一定带宽保证的业务 ,和非实时的数据业务。但传统的 Internet只支持非实时的数据业务。本文根据 IETF的建议提出了一种区分业务的体系结构 ,和内部路由结点的实现方案 ,并进行了性能分析。实验结果表明 ,该方案可以支持不同 Qo S要求的业务。 Due to the rapid development of the Internet, it is required to support various services required by Qo S, including real-time services with low latency, services with guaranteed bandwidth, and non-real-time data services. However, the traditional Internet only supports non-real-time data services. Based on the IETF’s recommendations, this paper presents a architecture that distinguishes services and the implementation of internal routing nodes and performs performance analysis. The experimental results show that the scheme can support the services required by different Qo S.