CCDE: Cisco Certified Design Expert (Practical) — Question 88

Company XYZ is migrating their existing network to IPv6 and they must plan for Layer 2 and Layer 3 devices. Some of the access layer switches do not support IPv6, however, core and distribution switches fully support unicast and multicast routing. The company wants to minimize cost of the migration. Which migration strategy should be used in the design?

Answer options

• A. The access layer switches must support IGMP snooping at a minimum. Any switches that do not support IGM snooping must be replaced.
• B. The access layer switches must support DHCPv6. Any switches that do not support DHCPv6 must be replaced.
• C. Upgrade the nonsupporting switches. Otherwise, it will cause an issue with the migration.
• D. Layer 2 switches will not affect the implementation of IPv6. They can be included in the design in their current state.

Correct answer: D

Explanation

The correct answer is D because Layer 2 switches do not require modifications to support IPv6, as they operate at the data link layer and do not process IP addresses. Options A, B, and C suggest replacing or upgrading the access layer switches, which would incur additional costs and is unnecessary for a successful IPv6 migration.