层次式交换网络  

Hierarchically Switched Network

作　　者：钱华林[1] 鄂跃鹏[1] 

机构地区：[1]中国科学院计算机网络信息中心,北京100190

出　　处：《中兴通讯技术》2010年第2期1-5,共5页ZTE Technology Journal

基　　金：国家高技术研究发展计划资助("863"计划)课题(2007AA01Z214)

摘　　要：文章认为互联网核心设备不堪重负、网络行为难以预测、数据包路径不确定、可控可管和可扩展性差、无法实现服务质量保障、网络设施易受攻击、核心路由设备复杂昂贵耗电等一系列缺陷,是由互联网的路由系统引起的。文章提出一种新的网络体系结构,将网络拓扑与网络编址相结合,提出逻辑节点和逻辑信道的概念保证树形结构的可靠性,用短接信道技术提供连接的灵活性,以简单的IP交换替代IP路由克服现有网络的各种缺陷。The Internet of today is facing serious challenges including lack of routing system scalability, unpredictable network behaviour, uncertainty of data packet paths, poor control and manageability, unachieved Quality of Service （QoS）, vulnerability of network facilities to DDOS attacks, core router complexity, costliness, and high power consumption. All of these defects have their root cause in the routing system. This paper first proposes a new network architecture which combines the network typology with addressing. Then, it highlights that reliability of the tree structure is guaranteed by the concepts of logical node and logical link. Furthermore, shortcut link technology supports the flexibility of tree topology, and IP routing is replaced with IP switching. As a result, all flaws in the current Internet architecture would be overcome.

关 键 词：路由系统 IP交换 树形结构 网络拓扑结构 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]