| Summary: | 碩士 === 朝陽科技大學 === 資訊與通訊系 === 105 === In the world of Internet, in order to meet the needs of low transmission latency and easy route management, generally, we adopt the transmission methods of shortest path or single path. However, this the methods make it troublesome since it becomes harder to utilize bandwidth effectively. To solve this problem, some researchers have focused on the route optimization algorithms. The proposed algorithms when transmitting the data select one of routing paths. Nevertheless, the problem of utilization of bandwidth is still existed. Moreover, the routing security risk is high since the transmission of single path is easy to intercept and wiretap. Therefore, in this study, the method called Weight-Based Flow Dividing (WFD) on the OpenFlow switch under the framework of Software-Defined Networking (SDN) is proposed to utilize bandwidth effectively and reduce the routing security risk. The experiment results show the packets are transmitted on Multi-Path instead of single path by WFD. On the other hand, the bandwidth utilization of SDN is easier to adjust than that of traditional network in the implementations of software and hardware because of the programming of SDN.
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