Difference between SDN and NFV

1. Software Defined Networking (SDN)

The aim of the SDN design is to enhance overall network performance, and by providing a dynamic and programmatically effective network setup, networks may become nimble and adaptable. In order to provide more automated provisioning and policy-based management of network resources, SDN is a technology that separates the control plane management of network devices from the underlying data plane that forwards network traffic. Basically, SDN makes networks programmable by isolating the systems that will determine where traffic should be sent, i.e., Pushing data packets to specific destinations is done by the data plane, which is part of the underlying system's control plane. With the use of software that makes networks centrally programmable, SDN provides its users with a method to access controlled network services and allows for quicker configuration. Businesses and service providers can react swiftly to market requirements thanks to software-defined networking, and Changes in requirements ultimately lead to better network control.

2. Network Functions Virtualization (NFV)

Network Function Virtualization (NFV) is a network architecture that aims to speed up service deployment for network operators and save costs by isolating tasks like a firewall or removing encryption from dedicated hardware and shifting it to virtual servers, combining several tasks into a single physical server, which eventually lowers total cost. NFV enables different network operators to implement network policies without being concerned about where to put functions in the network or how to route traffic via these functions. It is a method for virtual network services, including load balancers, firewalls, and routers that have historically been implemented on computer hardware whose user interface is managed by the owner and allows the deployment of network services on virtual machines. The hypervisor for virtual machines is referred to as virtual machine management. It allows several operating systems to share a single physical CPU. It will produce high-performance networks with improved flexibility, scalability, and, compared to networks constructed with conventional networking hardware, versatility at low cost. In order to get over the traditional drawback, reduces the requirement for specialized or proprietary hardware for network deployment and management using custom-designed network equipment.