The function of a southbound API is to [C] manage flow control between an SDN controller and a switching fabric. Southbound APIs, such as OpenFlow, Cisco, and OpFlex, enable communication between controllers and network devices, allowing for better control over the network and promoting efficiency in SDN controllers to adapt to real-time demands and needs. These APIs facilitate the exchange of information between the SDN controller and network devices, enhancing the network's responsiveness to traffic demands by enabling administrators to modify network configurations and flow-table entries in switches and routers based on evolving enterprise requirements.
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ChatGPT:
C. Manage flow control between an SDN controller and a switching fabric
Explanation:
A southbound API (Application Programming Interface) is used to facilitate communication and information exchange between the SDN (Software-Defined Networking) controller and the network devices, such as switches and routers, in the data plane. The southbound API is responsible for conveying the controller's decisions regarding network behavior and policies to the underlying infrastructure.
Option C correctly describes the function of a southbound API by mentioning "manage flow control between an SDN controller and a switching fabric." This involves instructing the switching fabric on how to handle data flows based on the policies and decisions made by the SDN controller.
What is a function of a southbound API?
A. Use orchestration to provision a virtual server configuration from a web server
B. Automate configuration changes between a server and a switching fabric
C. Manage flow control between an SDN controller and a switching fabric
D. Facilitate the information exchange between an SDN controller and application
ChatGPT
B. Automate configuration changes between a server and a switching fabric
A southbound API is responsible for facilitating communication and automation between the controller (or management plane) and the network devices (switches, routers, etc.) in a software-defined networking (SDN) environment. It allows the controller to automate configuration changes and manage the behavior of the network devices based on the higher-level instructions and policies provided by the controller.
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