Implementación de redes definidas por software (SDN) sobre redes IEEE 802.11 mediante MININET WI-FI

Abstract

The main objective of this work was the implementation of software defined networks (SDN) over IEEE 802.11 networks through Mininet Wi-Fi. It was resorted to tools used by SDN networks to carry out wireless links and station mobility; basic concepts were defined such as: SDN architecture, OpenFlow protocol, Mininet Wi-Fi and its main axis, the controller. The SDN driver was OpenDayLight Open Source which helps to reprogram paths that will follow the data flows throughout the network in an efficient way. The network was simulated by using the software Mininet Wi-Fi, emulator of Wireless Networks Defined by software (SDWN). The test scenarios were programmed in Python language, through the command console of Mininet Wi-Fi. The Wireshark tool was used to carry out traffic captures in various interfaces, and together with the iperf3 tool, TCP and UDP data streams were sent to obtain bandwidth, datagram loss, and jitter in the network links. When performing the respective tests for the scenario with the mobility models, it was obtained that in the ReferencePoint and RandomWalk models a jitter of 5.64ms and 5.7ms was generated, respectively, and values of 0.73% and 0% in the loss of datagrams, because RandowWalk creates patterns of group behavior. It is concluded that, by using a new network model, it was possible to implement efficient solutions to improve wireless networks; by optimizing a greater deployment of services and improving the performance of applications throughout the network.