01487nas a2200133   4500008004100000245005900041210005500100300001200155520101600167100002101183700002201204700002201226856010501248       2021                        eng d00aExploring SDN & NFV in 5G Using ONOS & POX Conytollers0 aExploring SDN NFV in 5G Using ONOS POX Conytollers  a187-2033 aThis article describes how novel functionalities will take advantage of the cloud networking and will gradually replace the existing infrastructure of mobile networks with a virtualized one. Two technologies, namely software defined networking (SDN) and network function virtualization (NFV), offer their important benefits and a combination of them is an answer to the demands raised, such as central office re-architected as a data center (CORD). Open network operating system (ONOS) and POX are SDN controllers and offer an option to combine SDN and NFV addressing many ongoing problems in the field of mobile networks. In this paper, technologies and both controllers are compared and contrasted. Indicative cases of topologies are simulated and help evaluating both controllers. According to the experimental findings, ONOS is one of the most important controllers for practical, theoretical, research and educational purposes, while POX is a useful and simpler controller for other educative applications.1 aBouras, Christos1 aKollia, Anastasia1 aPapazois, Andreas  uhttp://telematics.upatras.gr/telematics/publications/exploring-sdn-nfv-5g-using-onos-pox-conytollers