A network engineer wants to abstract the physical network infrastructure to create logical networks for different departments, allowing for segmentation without changing the physical topology. Which part of a software-defined architecture enables this capability?
Overlay network
Underlay network
Control plane
Data plane
The overlay network allows for the creation of virtual networks on top of the physical infrastructure. This enables network segmentation and virtualization without modifying the underlying physical network (underlay network). The control plane manages routing and policy decisions but does not create logical networks. The underlay network refers to the actual physical infrastructure that carries the traffic. The data plane is responsible for forwarding traffic based on the control plane's decisions but doesn't handle network abstraction.
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