.

Besides, which one is an SDN controller?

An SDN controller is an application in software-defined networking (SDN) that manages flow control to enable intelligent networking. SDN controllers are based on protocols, such as OpenFlow, that allow servers to tell switches where to send packets. The controller is the core of an SDN network.

Likewise, what is SDN and how it works? The SDN layer essentially acts a virtual software switch or router in place of (or in conjunction with) the physical network devices. So instead of software embedded in the routers and switches managing the traffic, software from outside the devices takes over the job.

Simply so, what is the protocol used by the controller in SDN?

Two of the most well-known protocols used by SDN Controllers to communicate with the switches/routers is OpenFlow and OVSDB. Other protocols that could be used by an SDN Controller is YANG or NetConf.

What are the main components of SDN?

Accordingly, in an classic SDN architecture, there are three main components: the controllers, the forwarding devices and the communication protocols between them.