随着网络带宽的迅速增长,主机协议处理开销已经成为系统整体性能的瓶颈.近年来,在协议加速领域开展了大量的研究工作,主要分为协议处理机制、实现以及结构的优化.在分析了协议处理的开销与性能之后,从协议机制、实现和处理结构这3方面对...随着网络带宽的迅速增长,主机协议处理开销已经成为系统整体性能的瓶颈.近年来,在协议加速领域开展了大量的研究工作,主要分为协议处理机制、实现以及结构的优化.在分析了协议处理的开销与性能之后,从协议机制、实现和处理结构这3方面对TCP(transmission control protocol)加速技术的研究现状进行了总结,并分析了进一步的研究方向.展开更多
A router architecture based upon ForCES （Forwarding and Control Element Separation）, which is being standardized by IETF ForCES working group, gains its competitive advantage over traditional router architectures in...A router architecture based upon ForCES （Forwarding and Control Element Separation）, which is being standardized by IETF ForCES working group, gains its competitive advantage over traditional router architectures in flexibility, programmability, and cost-effectiveness. In this paper, design and implementation of a ForCES-based router （ForTER） is illustrated. Firstly, the implementation architecture of ForTER is discussed. Then, a layered software model, which well illustrates ForCES features, is proposed. Based on the model, design and implementation of Control Element （CE） and Forwarding Element （FE） in ForTER are introduced in detail. Moreover, security for ForTER is considered and an algorithm to prevent DoS attacks is presented. Lastly, experiments of ForTER are illustrated for routing and running routing protocols, network management, DoS attack prevention, etc. The experimental results show the feasibility of the ForTER design. Consequently, the ForTER implementation basically testifies the feasibility of ForCES architecture and some IETF ForCES specifications.展开更多
文摘随着网络带宽的迅速增长,主机协议处理开销已经成为系统整体性能的瓶颈.近年来,在协议加速领域开展了大量的研究工作,主要分为协议处理机制、实现以及结构的优化.在分析了协议处理的开销与性能之后,从协议机制、实现和处理结构这3方面对TCP(transmission control protocol)加速技术的研究现状进行了总结,并分析了进一步的研究方向.
基金Supported by the National Natural Science Foundation of China under Grant Nos. 60573116 and 60603072the National High Technology Development 863 Program of China under Grant No. 2007AA01Z201+1 种基金the Zhejiang Provincial NSF China under Grant Nos. Z106829, Y106747the Zhejiang Sci & Tech Project under Grant No. 2006C11215.
文摘A router architecture based upon ForCES （Forwarding and Control Element Separation）, which is being standardized by IETF ForCES working group, gains its competitive advantage over traditional router architectures in flexibility, programmability, and cost-effectiveness. In this paper, design and implementation of a ForCES-based router （ForTER） is illustrated. Firstly, the implementation architecture of ForTER is discussed. Then, a layered software model, which well illustrates ForCES features, is proposed. Based on the model, design and implementation of Control Element （CE） and Forwarding Element （FE） in ForTER are introduced in detail. Moreover, security for ForTER is considered and an algorithm to prevent DoS attacks is presented. Lastly, experiments of ForTER are illustrated for routing and running routing protocols, network management, DoS attack prevention, etc. The experimental results show the feasibility of the ForTER design. Consequently, the ForTER implementation basically testifies the feasibility of ForCES architecture and some IETF ForCES specifications.
