Free CCNA | Software-Defined Networking | Day 62 | CCNA 200-301 Complete Course

Welcome to Jeremy’s IT Lab. This is a free, complete course for the CCNA. If you like these videos, please subscribe to follow along with the series. Also, please like and leave a comment, and share the video to help spread this free series of videos. Thanks for your help. In this video we will look at software-defined networking.

In the first video of this network automation series we already covered the fundamentals such as centralizing the control plane in an SDN controller, northbound and southbound APIs, etc. So, in this video we’ll take a more in-depth look at one of Cisco’s SDN offerings, SD-Access, Software-Defined Access. We’ll cover exam topics 6.3 and 6.4.

You’ll learn new terms like overlay, underlay, and fabric which are essential concepts in SDN that we haven’t covered yet. Here’s what we’ll cover in this video. First I’ll briefly review the points about SDN that you’ll need to remember for this video. Then I’ll introduce Cisco’s SD-Access, including important concepts like underlay, overlay, and fabric.

I’ll also introduce Cisco’s DNA Center management platform, which is an essential part of SD-Access, and compare it to traditional network management. Make sure to watch until the end of the video for a bonus practice question from Boson Software’s ExSim, the best practice exams for the CCNA. Let’s reviews some points about SDN. SDN is an approach to networking that centralizes the control plane into an application called

a controller. Traditional control planes use a distributed architecture, which means that every network device has its own control plane. The control planes of each network device use protocols like OSPF to communicate with each other and share routing information, each device has its own ACLs and security rules, etc. That’s a distributed control plane.