The way that networks is structured nowadays, like their operation, is reaching its limits. The intelligence of current equipment is manufacturer property and the network administrator should work with what is provided by the hardware. Given the current demands, it was observed the need for changing the operation of this network model by another one to attend the expectation of the users. With that, comes a new concept: a network in which the hardware follows the instructions of a programmable server that distributes its rules and commands to all network elements in an automated way. From this idea, comes the Software Defined Networking (SDN), which provides relevant changes on the creation and operation of current networks and show a new way to control the data infrastructure. The network is no longer seen as a collection of hardware equipment and it starts to work as an element with intelligence able to adapt itself to what is happening in the moment. The network becomes sensitive to the type of application that uses it. Software defined networks allow a fast and easy configuration and reconfiguration, and programmers now have freedom to create solutions to their own problems. A new paradigm is created, which proposes the disaggregation between the data plan and the control plan. This separation turns possible that switches and routers forward data according to new rules that are in a server.