Which statement describes the Cisco SD-Access plane functionality for fabric-enabled wireless?

Question

Options

• AThe control plane traffic is sent to the WLC through VXLAN, and the data plane traffic is sent to
• BControl plane traffic and data plane traffic are sent to the WLC through CAPWAP tunnels.
• CThe control plane traffic is sent to the WLC through CAPWAP tunnels, and the data plane traffic is
• DControl plane traffic and data plane traffic are sent to the WLC through VXLAN.

• A
  2% (1)
• B
  8% (4)
• C
  88% (45)
• D
  2% (1)

Explanation

Cisco SD-Access Fabric-Enabled Wireless Plane Functionality

In fabric-enabled wireless, the architecture splits traffic handling between two protocols: control plane traffic travels via CAPWAP tunnels to the WLC (for AP management, client association, and authentication), while data plane traffic is encapsulated in VXLAN and forwarded directly through the fabric infrastructure - making Option C correct.

Why the distractors are wrong:

• Option A reverses the protocols - VXLAN is not used for control plane traffic to the WLC in this architecture.
• Option B is incorrect because sending both planes through CAPWAP represents traditional wireless (non-fabric) design, eliminating the benefit of SD-Access fabric integration.
• Option D is incorrect because VXLAN alone cannot handle the wireless control functions (AP registration, client management) that require CAPWAP communication with the WLC.

Memory Tip: Think "C for Control = CAPWAP" - the letter C links Control plane to CAPWAP. Data plane uses VXLAN because it needs to ride the fabric's overlay tunnel just like wired traffic does. The split design is the whole point of fabric-enabled wireless - control stays with the WLC, data joins the fabric.

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