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Automation & Programmability
Cisco Network Automation
SDN and Controller-Based Networks
Networking devices forward data in the form of messages, typically data-link frames like Ethernet
frames. You have learned about how switches and routers do that forwarding for the entire length
of preparing for the CCNA exam.
Network programmability and Software Defined Networking (SDN) take those ideas, analyze
the pieces, find ways to improve them for today’s needs, and reassemble those ideas into a new