A GRE tunnel is down with the error message:

%TUN-5-RECURDOWN: Tunnel0 temporarily disabled due to recursive routing error

Which two options describe possible causes of the error? (Choose two.)

A. Incorrect destination IP addresses are configured on the tunnel.
B. There is link flapping on the tunnel
C. There is instability in the network due to route flapping
D. The tunnel mode and tunnel IP address are misconfigured
E. The tunnel destination is being routed out of the tunnel interface 

A GRE tunnel is down with the error message:

%TUN-5-RECURDOWN: Tunnel0 temporarily disabled due to recursive routing error.

Which two options describe possible causes of the error? (Choose two.)

A. Incorrect destination IP addresses are configured on the tunnel.
B. There is link flapping on the tunnel
C. There is instability in the network due to route flapping
D. The tunnel mode and tunnel IP address are misconfigured
E. The tunnel destination is being routed out of the tunnel interface 

Correct Answer: CE

The %TUN-5-RECURDOWN: Tunnel0 temporarily disabled due to recursive routing error message means that the generic routing encapsulation (GRE) tunnel router has discovered a recursive routing problem. This condition is usually due to one of these causes:

• A misconfiguration that causes the router to try to route to the tunnel destination address using the tunnel interface itself (recursive routing)

• A temporary instability caused by route flapping elsewhere in the network