• Deepjyot Kaur Ryait

Software Defined Networking offers a cutting-edge networking architecture that can assist in meeting the needs of the user as needed. SDN also enhances network control and gives the network provider the ability to adapt to shifting business needs. The three layers that make up the unique SDN paradigm are built from the bottom up. Using the four pillars as the foundation of its architecture. The OpenFlow Protocol is among the preferred and well-known southbound SDN APIs. Using the OpenFlow protocol, a communication path is built between the controller and switch. The SDN paradigm makes use of southbound APIs to facilitate communication between the network plane and the forwarding plane. The SDN controller has effective network management, allowing it to adapt the network dynamically to meet demand and needs as they arise. The OpenFlow protocol is the most widely used communication protocol between the SDN controller and the network devices.

SDN, API, OpenFlow, OVSDB, Flow Table etc.

"An Imperative Protocol in SDN is OpenFlow", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.13, Issue 3, page no.d404-d412, March-2026, Available :http://www.jetir.org/papers/JETIR2603348.pdf

"An Imperative Protocol in SDN is OpenFlow", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.13, Issue 3, page no. ppd404-d412, March-2026, Available at : http://www.jetir.org/papers/JETIR2603348.pdf