What Is Openflow Protocol?
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OpenFlow is an open protocol for controlling how packets are forwarded in software-defined networks (SDN). OpenFlow defines how a controller can interact with a network switch to program it with rules for forwarding traffic. It also defines how the controller and switch exchange messages to enable the controller to add, modify, and delete rules in the switch. OpenFlow can be used to implement virtual networks over physical infrastructure, allowing for flexible network topologies and rapid deployment of services.