What is the solution to this problem?

Refer to the exhibit.

A network engineer has configured GRE between two IOS routers. The state of the tunnel interface is continuously oscillating between up and down.

What is the solution to this problem?
A . Create a more specific static route to define how to reach the remote router.
B . Create a more specific ARP entry to define how to reach the remote router.
C . Save the configuration and reload the router.
D . Check whether the internet service provider link is stable

View Answer

Answer: A

Explanation:

http://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/22327-gre­flap.html