You Are Designing a Multisite VPN Solution for a Customer

Multiple Choice

You are designing a multisite VPN solution for a customer and you are concerned with the additional overhead of point-to-point tunnels and the associated overlay routing with DMVPN. How does a GDOI-based VPN eliminate the additional tunnel and routing overhead found in DMVPN?

A) The GDOI-based VPN requires overlaying a secondary routing infrastructure through the tunnels.
B) In a GDOI-based VPN, all group members share a common security association.
C) The GDOI-based VPN requires the provisioning of a complex connectivity mesh.
D) The GDOI-based VPN leverages the routing protocol to find its peer for tunnel setup.