互联网体系结构剖析

Anatomy of Internet Architecture

首先简要回顾了互联网发展的3个阶段,明确了互联网体系结构的由来及现状。接着详细论述了互联网体系结构这一概念的内涵和外延,总结归纳了互联网体系结构的若干重要设计原则,探讨了互联网体系结构的需求目标、实现技术、代表协议、体系结构特征等要素之间的关系,将互联网体系结构研究统一成一门具有紧密内在逻辑联系的学科。然后深入剖析了现行互联网体系结构所面临的重重矛盾,指出了现行互联网体系结构所面临的总的矛盾是“互联网体系结构的因循旧制与已经发生改变的应用环境之间的矛盾”,并从6个方面深入阐述了现行互联网体系结构所面临的各种具体矛盾。最后对传统互联网体系结构的改造工作和新型互联网体系结构的探索工作进行了总结。

By overviewing the origin,development and actual state of Internet, the definition and main concepts of Internet architecture are described in this paper firstly. Then some key design principles are outlined and discussed, which consolidate the requirement goals, implementation techniques, representative protocols and architectural characteristics of Internet architecture into a closely interrelated discipline. Focusing attention on the current dilemma in today＇s Internet,a total contradiction and other six concrete contradictions faced by Internet architecture are presented and anatomized. Further more, the attempts to improve the traditional Internet architecture and the researches and explorations on the future Internet architecture are summarized.