What are the four main steps in configuring a GRE tunnel over IPsec on Cisco routers?

What are the four main steps in configuring a GRE tunnel over IPsec on Cisco routers?
(Choose Four)

What are the four main steps in configuring a GRE tunnel over IPsec on Cisco routers?
(Choose Four)

A.
Configure a physical interface or create a loopbackinterface to use as the tunnel
endpoint.

B.
Create the GRE tunnel interfaces.

C.
Add the tunnel interfaces to the routing process sothat it exchanges routing updates
across that interface.

D.
Add the tunnel subnet to the routing process so that it exchanges routing updates across
that interface.

E.
Add all subnets to the crypto access-list, so that IPsec encrypts the GRE tunnel traffic.

F.
Add GRE traffic to the crypto access-list, so that IPsec encrypts the GRE tunnel traffic.



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