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Which two reasons would cause this problem?

You have deployed a GRE tunnel between Site A and Site B. The tunnel interfaces are up on both
tunnel endpoints but traffic is not being passed between the remote sites.
Which two reasons would cause this problem? (Choose two.)

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A.
The intermediate routers between the tunnel endpoints do not have GRE transport enabled.

B.
The intermediate routers between the tunnel endpoints do not have routes to both tunnel
endpoints.

C.
The tunnel endpoints do not have import policies redistributing routes out of the tunnel.

D.
The tunnel endpoints do not have the required routes directing traffic into the tunnel.


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