Week 4: Software-Defined Network



This week, we learn about the components of infrastructure management, including network architecture, Virtualization, Asset management, and more.

The chapter showed the many aspects of IT enterprises, how to protect them, and what to be aware of. The thing that most intrigues me is Software-defined networking (SDN).

SDN is a network architecture in which software applications are responsible for deciding how to best route data, and then actually moving it. In the physical world, routers are used to route data, and other protocols support this. With SDN, it is done using software. The SDN model is typically used in cloud computing environments because it is complex and requires flexibility across regions.

SDN has three layers:

·       Application layer, this is where network devices sit, such as a firewall and a load balancer.

·       Control layer (Plane), this layer translates application requirements for the hardware.

·       Infrastructure Layer (Data Plane), this is where the physical devices like routers and switches reside, and it will follow the instructions of the controller.

When I came across SDN, I found it interesting because it uses software to control and manage resources within the environment. 

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