This document describes the detailed analysis of the protocols involved in Software Defined Networks (SDN), through the design and capture of traffic in a basic SDN network, with special emphasis on the Openflow protocol. Through this simulation, it is determined that the behavior of the SDN controller is similar to that of a router in conventional networks and the main messages involved in the openflow protocol were identified, determining their functions and consecutive, using the protocol analyzer Wireshark.En este documento se describe el análisis a detalle de los protocolos involucrados en las Redes Definidas por Software (SDN), mediante el diseño y captura de tráfico en una red SDN básica, haciendo énfasis especial en el protocolo Ope...