What is the function of the fabric control plane node in a Cisco SD-Access deployment?
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A. B. C. D.C.
In a Cisco Software-Defined Access (SD-Access) deployment, the fabric control plane node plays a crucial role in managing and controlling the network. The correct answer is (C) "It holds a comprehensive database that tracks endpoints and networks in the fabric."
The fabric control plane node is responsible for maintaining the network topology and tracking the status of endpoints and network devices connected to the SD-Access fabric. It acts as a centralized point of control for the entire fabric and stores the information about the fabric nodes and the endpoints connected to it. The control plane node maintains a comprehensive database that includes the location, status, and policy information of each endpoint in the network.
This database helps the control plane node to make informed decisions about network traffic, routing, and policy enforcement. The control plane node uses the database to determine the best path for traffic to flow through the fabric and to enforce network policies, such as access control and segmentation.
In addition to maintaining the endpoint and network database, the fabric control plane node also handles the exchange of control messages between the network nodes. It uses various protocols, such as Locator/ID Separation Protocol (LISP), to manage the fabric's routing and to maintain the network's health.
Therefore, the fabric control plane node is a critical component in a Cisco SD-Access deployment as it holds a comprehensive database that tracks endpoints and networks in the fabric, which enables it to provide efficient routing, segmentation, and policy enforcement.