200-301 Question 319
Single answerA network administrator has configured a static route on a router with the following command: 'ip route 192.168.10.0 255.255.255.0 10.1.1.1'. However, the administrator notices that the route is not being used, even though the destination network (192.168.10.0/24) is reachable. What could be the most likely reason for this behavior?
- A
The next-hop IP address 10.1.1.1 is not reachable from the router.
- B
The static route has a higher administrative distance than an existing dynamic route to the same network.
- C
The router does not support static routing.
- D
The subnet mask used in the static route command is incorrect.
Show answer and explanation
Correct answer: A
Explanation
The router is configured with a static route pointing to the next-hop IP address 10.1.1.1. For the static route to be active, the router must have a valid route to reach the next-hop IP address. If the next-hop IP address is not reachable, the static route will not be installed in the routing table, which explains why the route is not being used in this scenario.
- A. Correct.
Static routes are only installed in the routing table if the next-hop IP address is reachable. If 10.1.1.1 is not reachable, the route will not be used.
- B. Incorrect.
While administrative distance can determine route preference, it does not prevent a route from being installed into the routing table. This is not the primary issue in this scenario.
- C. Incorrect.
All modern routers support static routing. This is not a valid reason for the described behavior.
- D. Incorrect.
If the subnet mask were incorrect, it would result in routing issues or mismatches but would not prevent the route from being installed in this specific scenario.