计算机网络的发展现状及网络体系结构涵义分析

Current State of the Art in Computer Networks and Connotation Analysis of Network Architecture

自身存在种种缺陷与不足的传统网络体系结构,已不再适宜用来指导现今互联网向下一代网络的演进。有必要在正确认识当前计算机网络发展现状和重新审视网络体系结构涵义的基础上,展开对满足下一代网络发展需求的新一代网络体系结构的研究。为此,本文专门对以互联网为代表的计算机网络所面临的发展现状以及近年来计算机网络演进与发展的主要趋势进行了总结和分析,并重点对网络体系结构的涵义进行了全方位、多角度的深入剖析。主张在综合考虑网络体系结构的普适性、特指性、抽象性和过程性等特征的基础上,运用发展的眼光和系统的观点来全面认识和把握其本质,并提出了合理的“网络体系结构认知框架”。本文研究结论对新一代网络体系结构的研究有重要的参考价值和指导意义。

Traditional network architecture with pitfalls and deficiencies would be better not chosen to guide the evolution of current Internet to next generation network any＇more. It is urgent to research new generation network architecture that sufficing new requirements after well-estimating current state of the art in computer networks and reflecting the essence of network architecture. This paper analyzes the current status as well as the evolution and development trends of computer networks represented by Internet, and specifically it presents an in-depth anatomy of the essence of network architecture from multiple perspectives. In order to get complete recognition and understanding of the essence of network architecture, it demonstrates the necessity to synthetically consider the characteristics of network architecture such as generality, individuality, abstractiveness, and proceduralness from both systematic and evolutionary perspectives. Correspondingly, this paper suggests a rational Cognitive Framework for Network Architecture, and results in this research are provided as valuable reference and guidance for further research on new generation network architecture.