Review of the SDN Architecture with Various API Controllers

SDN revolutionizes internetwork addressing, aiming to transcend the constraints of conventional configurations, facilitating adaptable network typologies. This trailblazing concept has gained remarkable traction in contemporary digital internetwork design. At its core, SDN merges control and data planes, yielding refined resource administration, elevated security, and comprehensive control. A spectrum of controllers, including floodlight, NOT, RYU, POX, open daylight (ODL), and open network operating systems (ONOS), has been engineered, collectively contributing to the architecture's constituents. This manuscript deeply probes into SDN network scalability, fault tolerance, and interfaces, concurrently conducting an extensive examination of pivotal facets within SDN architecture: API, controller infrastructures, modularity, extensibility, programming language, community scalability, telemetry, resilience, and fault tolerance.