Δικτύωση ορισμένη από λογισμικό

Abstract

The purpose of this thesis is to describe the Software Defined Networks (SDN) which are an emerging technology. Initially, the current network architecture is overviewed, presenting the challenges and problems it faces, as well as the need to transition to SDN networks. Next, the key features, the architecture and the benefits of SDN technology are described in comparison with the technologies used in traditional networks. Also, reference is made to the OpenFlow protocol which is used for the communication of SDN devices. The application fields of this technology are varied, but in this work emphasis is placed on the application of the SDN architecture in Data Centers and the Virtualization of network operations. Finally, an SDN networking scenario is simulated in order to learn the network topology and parameterize it using the Mininet software. Upon completion of the simulation, some conclusions are drawn about SDN networks and their efficiency.