SDN network virtualization survey

Network virtualization(NV) provides containers to separate the tasks but share hardware resources and thus leads to reduced cost, increased network service deployment and efficiency of network. This virtual network is separated from physical hardware and can be used for performing operations like creation and deletion. Software-Defined Networking (SDN) separates the control plane from the data-plane of the switches. SDN contains protocols, e.g., OpenFlow (OF) to remotely control the data-plane SDN switches. So by merging SDN and NV we can create virtual Software Defined Networks (vSDNs).