面向软件定义网络（SDN）的新型交换技术实验研究

Experimental Research on New Switching Technology for Software Defined Network

本文主要内容是基于Mininet分别搭配POX和Floodlight的Linux实验测试平台,采用Python编程控制网络结构与控制器,并模拟多数据中心网络进行实验,通过Python编写网络拓扑结构,测试主机终端的带宽性能,最终使用Python脚本实现自动化测试节点、链路以及带宽等参数;使用FloodLight控制器对主机间的流表进行分析,深入理解OpenFlow协议。优化扩展了传统胖树结构的数据中心,测试数据结果相比传统结构测试更好;抓包分析建立OpenFlow流表的过程来更好的理解控制转发分离的思想。

The main content of this article is based on Mininet’s Linux experimental test platform with POX and Floodlight,using Python programming to control the network structure and controller,and simulating a multi-data center network for experiments.The network topology is written in Python to test the bandwidth performance of the host terminal In the end,Python scripts were used to automatically test parameters such as nodes,links,and bandwidth;the FloodLight controller was used to analyze the flow tables between hosts,and to understand the OpenFlow protocol in depth.The optimization extends the data center of the traditional fat tree structure,and the test data results are better than the traditional structure test;the process of packet analysis and establishment of the OpenFlow flow table to better understand the idea of control and forwarding separation.