Refer to the exhibit. After configuring GRE between two routers running EIGRP that are connected to each other via a WAN link, a network engineer notices that the two routers cannot establish the GRE tunnel to begin the exchange of routing updates. What is the reason for this?
 

A. Either a firewall between the two routers or an ACL on the router is blocking IP protocol number 47.

B. Either a firewall between the two routers or an ACL on the router is blocking UDP 57.

C. Either a firewall between the two routers or an ACL on the router is blocking TCP 47.

D. Either a firewall between the two routers or an ACL on the router is blocking IP protocol number 57. A








 

Suggested Answer: Explanation



This question is in 300-101 Cisco Implementing Cisco IP Routing (ROUTE) Exam
For getting Cisco Certified Network Professional (CCNP) Routing and Switching Certificate




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