在互联网业务需求迅速增长的今天，传统的网络结构已然面临着各种难题。软件定义网络技术提供了一种将 设备数据平面和控制平面解耦的新型网络架构，为互联网的发展提供了一种新的解决方案。本文提出在Openflow 控制器的 基础上，结合Dijkstra 算法，解决数据包转发过程中的最优路径查找问题。

With the rapid growth of the demand for the Internet, the traditional network has faced with various problems. SDN technology provides a new type of network architecture which is decoupled from the data plane and control plane, providing a new solution for the development of the internet. This paper presents a method using the Openflow controller and Dijkstra algorithm to solve the optimal path searching problem in the procedure of data forwarding.