The implementation of multi-path delivery for data flows using Raspberry Pi boards in software-defined networks

In the Internet, Software-Defined Network (SDN) is an attractive issue because it allows network managers to use software program to control and manage the networks instead of the setup of hardware equipment. Therefore, in this study, we established an experiment platform by Raspberry Pi boards and proposed a method, Weight-Based Flow Dividing (WFD) method, to implement the OpenFlow switching in the SDN. The proposed method uses the multipath to transmit the packets by weighted configurations because the single-path transmission causes the routing security at high risk and is difficult to effectively use the path bandwidth. In addition, we use network simulation software Mininet on this study for comparison purposes. The simulations show the results can achieve the multipath transmissions through the hardware OpenFlow switch platform with WFD in different weighted configurations, as Mininet.