Software-Defined Networking (SDN) separates the brain of your network from the devices that forward traffic. This separation gives you programmable control over your entire network from a single point.
I'll cover:
- Control plane and data plane separation
- SDN controllers like OpenDaylight and ONOS
- OpenFlow protocol basics
- SD-WAN for branch connectivity
- Network Function Virtualization
- Intent-based networking
Without SDN knowledge, you'll struggle to manage modern cloud-scale networks.