Implementación de una aplicación para network coding utilizando redes definidas por software

Abstract

This work presents the results of a research project in which a software solution that uses network coding as a tool for the recovery of lost packets in a Software Defined Network is implemented. It analyzes the functioning of Software Defined Networks, the OpenFlow communications protocol, an introduction to Mininet as a tool for the simulation of data networks, a brief analysis of the Ryu framework and the basic operation of the network coding, as well as the proposal of its use as a mechanism for the retrieval of data in a network in a transparent way for terminal equipment. It presents the methodology used in this project, the design of a network with delays and errors in the links, an application developed for the Ryu controller and additional applications developed in Python to perform the tasks necessary for network coding and recovery of lost packets. The results of the tests performed in the implemented scenario are presented, the amount of data sent, received, lost and recovered is presented, and based on these results the percentage of data recovery thanks to the application is established.