吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (3): 1040-1047.doi: 10.13229/j.cnki.jdxbgxb20200198

• 计算机科学与技术 • 上一篇    

软件定义网络的数据中心动态流量调度方案

刘振鹏1,2(),任少松1,李明1,王鑫鹏1,李小菲2()   

  1. 1.河北大学 电子信息工程学院，河北 保定 071002
    2.河北大学 信息技术中心，河北 保定 071002
  • 收稿日期:2020-03-31 出版日期:2021-05-01 发布日期:2021-05-07
  • 通讯作者: 李小菲 E-mail:lzp@hbu.edu.cn;lixiaofei@hbu.edu.cn
  • 作者简介:刘振鹏（1966-），男，教授，博士. 研究方向:网络信息安全,隐私保护,软件定义网络. E-mail:lzp@hbu.edu.cn
  • 基金资助:
    河北省自然科学基金项目(F2019201427);教育部云数融合科教创新基金项目(2017A20004)

Software defines dynamic traffic scheduling scheme for network data center

Zhen-peng LIU1,2(),Shao-song REN1,Ming LI1,Xin-peng WANG1,Xiao-fei LI2()   

  1. 1.College of Electronic Information Engineering，Hebei University，Baoding 071002，China
    2.Information Technology Center，Hebei University，Baoding 071002，China
  • Received:2020-03-31 Online:2021-05-01 Published:2021-05-07
  • Contact: Xiao-fei LI E-mail:lzp@hbu.edu.cn;lixiaofei@hbu.edu.cn

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摘要：

针对等价多路径（ECMP）算法没有考虑网络负载和流量特征，很容易将多条大数据流映射到同一路径，造成网络瓶颈链路的问题，提出一种面向软件定义网络（SDN）数据中心的基于网络负载的动态流量调度方案（DTSNL）。该方案结合网络负载和流量的特点，通过合理调度流量，实现网络负载均衡。控制器通过周期性统计Fat-Tree网络拓扑中接入层交换机的流量信息，计算流量阈值，为带宽占比较高的大数据流选择最佳路径。仿真实验表明，相较于ECMP方案和全局首选（GFF）方案，DTSNL方案的网络平均吞吐量、链路使用率、核心交换机负载、链路带宽利用率4项指标都有所提高。

关键词: 数据中心网络, 软件定义网络, 网络负载, Fat-Tree拓扑

Abstract:

The Equal-Cost Multi-Path （ECMP） algorithm does not consider the characteristics of network load and traffic flow， that it is easy to map multiple big data streams to the same path， resulting in network bottleneck link. To overcome this shortcoming， a dynamic traffic scheduling （DTSNL） scheme based on network load for Software Defined Network （SDN） data center is proposed. The scheme combines the characteristics of network load and traffic to schedule the traffic reasonably and achieve network load balancing. The controller calculates the traffic threshold by periodically counting the traffic information of the access layer switch in the Fat-Tree network topology， and chooses the best path for the large data flow with high bandwidth ratio. The simulation results show that， compared with the ECMP scheme and the GFF scheme， the poposed DTSNL scheme improves the network average throughput， link utilization， and core switch load and link bandwidth utilization.

Key words: data center network, software definition network, network load, Fat-Tree topology

中图分类号: 

  • TP393

图1

基于SDN数据中心流量调度框架"

图2

K=4 Fat-Tree网络拓扑"

图3

网络平均吞吐量比较"

图4

链路利用率比较"

图5

核心交换机负载比较"

图6

链路带宽利用率比较"

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[1] 沈军,周晓,吉祖勤. 服务动态扩展网络及其结点系统模型的实现[J]. 吉林大学学报(工学版), 2019, 49(6): 2058-2068.
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