• Ajay Prashar
• Jawahar Thakur

Traditional networks are very complex and arduous to manage. It uses fixed and dedicated infrastructure devices such as routers and switches to control network traffic and are also vertically integrated i.e. there is a strong coupling between control and data planes. The functionality of the traditional network mostly implemented on dedicated infrastructure devices so deploying new services and protocols is a challenging tasks because all the switches need to be updated or replaced manually. The main idea behind Software Defined Networks (SDN) is to separate the control plane from the data plane and move it to a centralized server known as controller. In this paper, an introduction to Software Defined Networking is presented. In SDN (Software Defined Networking), the whole intelligence lies in the controller that programmatically control the underlying hardware devices. This paper also covers the introduction of SDN, SDN Architecture, SDN Controller, Characteristics of various SDN controller and SDN controller service.

Traditional Network, Control Plane, Data Plane, Software Defined Networking, SDN Controller.

"An Introduction to Software Defined Networking", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 9, page no.d325-d330, September-2021, Available :http://www.jetir.org/papers/JETIR2109334.pdf

"An Introduction to Software Defined Networking", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 9, page no. ppd325-d330, September-2021, Available at : http://www.jetir.org/papers/JETIR2109334.pdf