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    朱桂明, 谢向辉, 郭得科, 陆菲菲, 陶志荣. DCent: 基于双网卡服务器的高可扩展数据中心网络结构[J]. 计算机研究与发展, 2014, 51(5): 1009-1017.
    引用本文: 朱桂明, 谢向辉, 郭得科, 陆菲菲, 陶志荣. DCent: 基于双网卡服务器的高可扩展数据中心网络结构[J]. 计算机研究与发展, 2014, 51(5): 1009-1017.
    Zhu Guiming, Xie Xianghui, Guo Deke, Lu Feifei, Tao Zhirong. DCent: A High Extensible Data Center Networking Structure Using Dual-port Servers[J]. Journal of Computer Research and Development, 2014, 51(5): 1009-1017.
    Citation: Zhu Guiming, Xie Xianghui, Guo Deke, Lu Feifei, Tao Zhirong. DCent: A High Extensible Data Center Networking Structure Using Dual-port Servers[J]. Journal of Computer Research and Development, 2014, 51(5): 1009-1017.

    DCent: 基于双网卡服务器的高可扩展数据中心网络结构

    DCent: A High Extensible Data Center Networking Structure Using Dual-port Servers

    • 摘要: 虽然以服务器为中心的新型数据中心网络互联结构部分一般程度地解决了传统树型结构面临的性能瓶颈和可扩展性难题,但是,现行服务器大多数带有2个网络端口,如何基于双网卡服务器设计一种高可扩展、高性能的数据中心网络互联结构是一个颇具挑战性的问题.提出了基于双网卡服务器的高效可扩展数据中心网络互联结构DCent.DCent具有较高的网络吞吐量,使得数据中心能够进行无损和持续扩展,各类应用能够不受数据中心规模扩展的影响而继续运行;且服务器之间通过交换机进行互联,避免了服务器之间的直接连线,具有良好的模块化性.

       

      Abstract: A fundamental goal of data-center networking is to efficiently interconnect a large number of servers with low equipment cost while keeping high network bandwidth. The traditional tree-based networking schemes were born with the performance bottleneck and extensibility problems. To tackle the problems, some server-centric data center networking structures have been proposed. However, they are not truly expandable and suffer a low degree of regularity and symmetry. Since servers generally have two network interface card ports, how to design a high extensible and cost-effective data center networking structure with high performance based on servers’ two network interface card ports and without expensive high-end switches is a challenging problem. This paper proposes a high extensible modular server-centric data center networking structure called DCent, which requires that servers have two network interface card ports and only use commodity off-the-shelf mini-switches. We also develop low-overhead and robust routing schemes for DCent. Mathematical analysis shows that DCent has excellent topology properties. Although the server degree is only 2, DCent can be expanded very easily to encompass hundreds of thousands servers with the low diameter and high bisection width. DCent also has fine modularity where servers interconnect by switches which avoids direct connection between servers.

       

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