Designing Cisco Enterprise Networks (ENSLD) — Question 11

Which design consideration must be made when using IPv6 overlay tunnels?

Answer options

• A. Overlay tunnels that connect isolated IPv6 networks are considered a final IPv6 network architecture.
• B. Overlay tunnels should only be considered as a transition technique toward a permanent solution.
• C. Overlay tunnels should be configured only between border devices and require only the IPv6 protocol stack.
• D. Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure.

Correct answer: B

Explanation

The correct answer is B because overlay tunnels are primarily intended as a temporary solution while transitioning to a more stable architecture. Option A is incorrect as it mischaracterizes overlay tunnels as a final architecture. Option C is wrong since it inaccurately states the requirements for tunnel configuration. Option D is incorrect because it describes a function that does not apply to IPv6 overlay tunnels.