• Replaces hardware devices with software within a network as a part of SDN
  • Network functions can work as a software or in cloud
  • No need for designated hardware
  • Software designed networks are easy to maintain and their parameters can be easily set up through an application
  • NFV curbs the running costs and complexity of the whole network

Network Functions Virtualization

Network Functions Virtualization is one of the tools that the SDN uses in order to achieve its goals. NFV is a structure of networks in which special network hardware parts, as well as active physical network devices, are being replaced by software devices. Thanks to this virtualization, network data can exist on PCs or clouds. Devices virtualized in this way are called VNF – virtualized network functions. VNF is a running software or process which eliminates the need to have a dedicated unit of hardware for every network function. You can thus configure most settings on cloud servers through software, be it a router, firewall, or an internet filter.

A virtualized session border controller function can be used to protect the network without the need for installing expensive and complex physical hardware. In this scenario, the software – or process – fulfills exactly the same function as hardware would.