电子学报 ›› 2013, Vol. 41 ›› Issue (7): 1268-1272.DOI: 10.3969/j.issn.0372-2112.2013.07.004

• 学术论文 • 上一篇    下一篇

基于可编程硬件的虚拟路由器数据平面设计与实现

刘中金, 李勇, 杨懋, 苏厉, 金德鹏, 曾烈光   

  1. 清华大学电子工程系, 北京 100084
  • 收稿日期:2012-08-08 修回日期:2013-02-22 出版日期:2013-07-25
    • 作者简介:
    • 刘中金 男,1988年12月出生,山东聊城人.2009年毕业于北京理工大学电子工程系,其后进入清华大学电子工程系攻读博士学位,从事可编程虚拟化路由器方面的有关研究.E-mail:zj-liu09@mails.tsinghua.edu.cn;李勇 男,1985年出生,湖南长沙人,2007年于华中科技大学获得工学学士学位,2012年在清华大学电子工程系获得工学博士学位.主要研究领域为未来网络、下一代IP网络体系结构、移动管理、移动容迟网络、网络虚拟化等.
    • 基金资助:
    • 国家973重点基础研究发展计划 (No.2013CB3291005); 国家自然科学基金 (No.61171065,No.61021001,No.61133015); 国家863高技术研究发展计划 (No.2013AA010601,No.2013AA010605)

Design on Data Plane of Programmable Hardware-Based Virtual Router

LIU Zhong-jin, LI Yong, YANG Mao, SU Li, JIN De-peng, ZENG Lie-guang   

  1. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
  • Received:2012-08-08 Revised:2013-02-22 Online:2013-07-25 Published:2013-07-25
    • Supported by:
    • National Program on Key Basic Research Project of China  (973 Program) (No.2013CB3291005); National Natural Science Foundation of China (No.61171065, No.61021001, No.61133015); National High Technology Research and Development Program of China  (863 Program) (No.2013AA010601, No.2013AA010605)

摘要: 未来网络体系结构创新和验证亟需建设虚拟化网络实验平台,虚拟路由器作为其中的核心组网设备,其结构和性能决定了实验平台的灵活性和承载能力.本文提出基于并行流水线的虚拟路由器数据平面结构,结合并行包分类和异步多指针轮询调度机制,在同一物理底层上实现了多个相互隔离的并行异构路由器.本设计在可编程硬件上进行了原型实现,并结合商用及软件路由器在真实的网络环境中部署、测试与实验.实验结果表明与传统单流水线结构相比,本设计能以更高灵活性和并行性支持异构的路由器实例独立运行;在逻辑资源开销和延时特性未显著增加的情况下,并行虚拟路由器可以达到与硬件可比的线速转发能力.

关键词: 虚拟化, 数据平面, 并行流水线, 可编程硬件

Abstract: Building virtualized network experiment platform is considered to be an effective method for network architecture innovation and validation.The structure and performance of the virtual router determines the capacity and flexibility of network experiment platform.In this article,the virtual router's data-plane architecture with parallel pipelines is presented.Combined with parallel packet classification and asynchronous pointer polling scheduling mechanisms,we implement isolated heterogeneous router instances on the same physical underlying.Prototype system is deployed on programmable hardware which is tested with software routers in real network environment.Experimental results show that compared with traditional single-pipeline architecture,our design get greater flexibility and parallelism and supports heterogeneous router instances operating independently;logic resources overhead and delay characteristics are not significantly increased while each router instance achieves wire-speed forwarding which is comparable with that hardware.

Key words: virtualization, data plane, parallel pipeline, programmable hardware

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