CCIE Routing and Switching (legacy) — Question 26

Which two statements about a flat single-hub DMVPN with NHRP are true? (Choose two.)

Answer options

• A. NHRP shortens the configuration of the hub router.
• B. The spoke routers act as the NHRP servers.
• C. NHRP dynamically provides information about the spoke routers to the hub.
• D. NHRP disables multicast.
• E. The hubrouter uses NHRP to initiate the GRE tunnel with spokes.

Correct answer: C, E

Explanation

Option C is correct because NHRP allows the hub to learn about the spoke routers dynamically, which is essential for establishing communication. Option E is also correct as NHRP plays a crucial role in initiating GRE tunnels between the hub and the spokes. The other options are incorrect because they either misrepresent the function of NHRP or state false information about the network setup.