Network functions virtualization (NFV) is a trend that is being driven by multiple service providers around the world. Service providers are looking at integrating NFV in their network to accelerate the deployment of new network services, reduce capital and operating expenses by leveraging cost effective COTS (Commercial Off-The-Shelf) hardware, and make more efficient use of network resources. NFV moves network functions like switching, routing, firewall, BRAS, and many other devices from hardware appliances to running on virtualized x86 based server platforms.