SDN is a great new way to think about thenetworking. But, tilltoday, it was difficult for a software-definednetwork to communicatewiththe external world.
The approach aligns with the trend toward SDN (software-defined networking) and NFV (network function virtualization) among telecommunications operators, thanks to its elastic and virtualization-friendly cloud architecture.
The protocol, which was initially conceived by a graduate student at Stanford University named Martin Casado, represents a new way to control network switches and routers that has come to be known as softwaredefined networking, or SDN.