Software Defined Networks: A case for QoS implementation at the Greek School Network

The Software Defined Networking is a different approach to the way network equipment operation. Until recently, network devices embody both the physical layer (signaling) and the logic on how to exchange packets. This was intended to maximize the upload speed, and a predetermined path are not imposed delays. Similar solutions have been given to other resources in the field of Information Technology. Processing power, magnetic storage media, as well as random access memory, a factor which may be available depending on the needs of users. This was the main idea of the area of mainframes up to Virtualization and Cloud Computing. SDN is an emerging architecture that is dynamic, manageable, cost-effective, and adaptable, making it ideal for the high-bandwidth, dynamic nature of today's applications. This architecture decouples the network control and forwarding functions enabling the network control to become directly programmable and the underlying infrastructure to be abstracted for applications and network services. The OpenFlow protocol is a foundational element for building SDN solutions. In this paper an theoretical study of SDN technology will be given, as also as an implementation of a QoS mechanism based on SDN technology will be presented for the Greek School Network.