Implementation Techniques for High-Performance Real-Time IP Routers

提供服务质量(Qos)保证的实时IP路由器是下一代互联网的基本组成部分，它承诺独立于外部网络负载的区分服务级别，并在逐个连接的基础上实施。尽管过去十年的大量理论工作使我们对各种实时分组调度技术的复杂性有了更深入的了解，但对构建此类路由器的实现方面的研究相对较少。本项目旨在深入研究高性能可扩展实时分组路由器的软硬件实现技术。具体地说，我们计划关注以下三个问题：路由表查找、实时分组调度以及系统对主动网络概念的支持和应用。项目负责人将以实验的方式进行拟议的研究，构建一个名为Suez的纯软件并行实时IP路由器，该路由器由由千兆位/秒系统局域网连接的高性能商用PC集群组成。苏伊士项目的目标是在一个完全可运行的原型中评估所提出的数据包路由和调度实现技术的可行性和性能表现，并演示在有效软件支持的帮助下，可以将现有的PC组件互连以构建每秒数百万个数据包的可扩展实时数据包路由器。

Real-time IP routers that provide Quality of Service (QoS) guarantees is a fundamental building block for Next-Generation Internet, which promises differentiated service levels that are independent of externalnetwork loads and enforced on a connection-by-connection basis. Although a large body of theoretical work in the past decade has resulted in advances of our understanding of the complexity of various real-time packetscheduling techniques, relatively little research has gone into the implementation aspects of building such routers. This project proposes to study in depth software/hardware implementation techniques for high-performance scalable real-time packet routers. Specifically, we plan to focus on the following three issues: routing-table lookup, real-time packet scheduling, and systems support for and applications of the concept of active networking. The project directors are going to carry out the proposed research with an experimental approach by building a software-only parallel real-time IP router called Suez, which is constructed out of a cluster of high-performance commodity PCs connected by a Gigabit/sec system area network. The goal of the Suez project is to evaluate the feasibility and performance behavior of the proposedpacket routing and scheduling implementation techniques in a fully operational prototype, and to demonstrate that with the help of efficient software support, off-the-shelf PC components can be interconnected to build multi-million packets per second scalable real-time packet routers.