CCIE Data Center (legacy) — Question 1

Which statement about VXLAN is true?

Answer options

• A. Control-plane traffic traverses the underlay network.
• B. Control-plane traffic traverses the overlay network.
• C. Data-plan traffic traverse the overlay network.
• D. Data-plan traffic traverse the underlay network.

Correct answer: D

Explanation

The correct answer is D because VXLAN encapsulates Layer 2 frames into Layer 3 packets, allowing data-plane traffic to be transmitted over the underlay network. Options A and B incorrectly describe the nature of control-plane traffic, while option C misstates the role of data-plane traffic in the VXLAN architecture.