You are in charge of Securing Networks Cisco Routers and Switches in your company please
point out two benefits of using an IPsec GRE tunnel. (Choose two,)
A.
It requires a more restrictive crypto ACL to provide finer security control
B.
It has less overhead than running IPsec in tunnel mode.
C.
It allows IP multicast traffic.
D.
It allows dynamic routing protocol to run over the tunnel interface.