A network administrator is implementing a Software-Defined Networking (SDN) solution to enhance network automation. They need the network applications to communicate with the SDN controller to manage network policies effectively. Which communication direction should the applications use to interact with the controller?
In Software-Defined Networking (SDN) architectures, the northbound interface is used by network applications to communicate with the SDN controller. This allows applications to send instructions and policies to the controller, which then manages the network devices accordingly. The southbound interface is used by the SDN controller to communicate with the underlying network devices, not with applications. Eastbound and westbound interfaces refer to communication between controllers or systems at the same layer and are not involved in application-to-controller interactions.
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What is a Northbound Interface in SDN?
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Cisco CCNA 200-301
Automation and Programmability
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