Match each architectural concept or communication interface to its corresponding functional role in traditional vs. controller-based networking environments.
- Northbound API CommunicationEnables business applications and network management tools to communicate with the SDN controller.
- Centralized Control PlaneConsolidates network intelligence onto a controller that maintains a global view of the fabric.
- Distributed Control PlaneRequires individual routers and switches to independently compute forwarding tables via local protocol exchange.
- Southbound API CommunicationAllows the SDN controller to provision policy, configuration, and flow rules onto physical hardware nodes.
Cevap
Northbound APIs connect the controller with high-level applications; Centralized Control Planes aggregate network intelligence onto a central software controller; Distributed Control Planes require each network device to make independent control decisions locally; Southbound APIs allow the controller to communicate down to physical network infrastructure elements.
In controller-based networking, the control plane is decoupled from physical hardware and centralized on an SDN controller. Northbound APIs enable communication between software applications and the controller, while Southbound APIs allow the controller to configure and program underlying network elements. Traditional networks rely on a distributed control plane where each node executes control protocol algorithms locally.
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Anahtar Kavram
Structural and functional distinctions between traditional distributed networks and controller-based SDN architectures.