JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing — Question 51

The gr-0/0/0.0 interface on your Junos device has a link state of up/up and you have correctly added static routes to reach the remote subnets. However, you are not seeing traffic pass over the tunnel. What might be causing the issue?

Answer options

• A. The tunnel interfaces are disabled
• B. You have not configured keepalives on the endpoints
• C. The endpoints do not have valid routes to the remote tunnel endpoints
• D. The intermediary devices do not have valid routes to the route tunnel endpoints

Correct answer: D

Explanation

The correct answer is D because if the intermediary devices do not have valid routes to the route tunnel endpoints, they will not be able to forward traffic correctly through the tunnel. Options A and B are incorrect as they do not directly affect the routing of traffic once the tunnel is established, while C is incorrect as the endpoints themselves may have valid routes but still rely on the intermediary devices for traffic flow.