In SD-Access with fabric-enabled wireless, how are control plane and data plane traffic forwarded?
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Correct answer: Control plane traffic is sent to the WLC through CAPWAP tunnels, and data plane traffic is sent from the AP to the fabric edge switch through VXLAN..
Why this is the answer
In SD-Access with fabric-enabled wireless, the control plane and data plane are handled differently for efficiency and scalability. Control plane traffic, which includes AP management, configuration, and mobility messages, continues to use CAPWAP tunnels to communicate with the Wireless LAN Controller (WLC). This maintains the WLC's role in centralized wireless management. However, data plane traffic from the Access Point (AP) is encapsulated in VXLAN and forwarded directly to the fabric edge switch. This direct forwarding offloads the WLC from data plane processing, improving performance and reducing latency for wireless clients by leveraging the fabric's distributed forwarding capabilities. The other options are incorrect because they either misrepresent the use of CAPWAP for data plane in fabric-enabled wireless or incorrectly assign VXLAN to control plane traffic.
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