Why would you create a second route statement to the same network using a different AD and different interface?
Answer Options
If the first one fails to route to the destination, the second route will succeed.
If the first interface goes down, the second route will become active.
If there is a high amount of traffic on the first interface, the second route will become active.
If there is a routing loop on the first interface, the second will overcome the loop.
Correct Answer: B
Explanation
Secondary routes with higher administrative distance (AD) are used for failover. If the physical interface fails, the route statement will be taken out of the routing table. Then the second route will become active. Route tables unfortunately do not adjust based on the success or failure of a packet being routed. A router will not know to use a secondary route if the primary route fails to route a packet. If a dynamic protocol is used, such as OSPF or EIGRP, the routing protocol can sense high amounts of traffic and adjust route paths. However, statically configured routes are not managed by these dynamic routing protocols; therefore, the secondary route will not be used. A router will not be aware of routing loops; it will not respond with a change in the routing of packets.