Choosing Between Three Routes to Same Subnet

 In 200-301 V1 BBB Not in new books, CCENT-OLD, Q&A

Today’s question focuses on one router that has three different available routes to the same subnet ( Which should it choose? Details below, and answer in a few days.

R1 happens to run RIP-2 over the link to R2, OSPF over the link to R3, and EIGRP over the link to R4. All three of the routers on the right advertise a route for R1’s metric for the RIP-2 route is 1; with OSPF the metric is 65; and for EIGRP, the metric is 2,168,134.

The first question: Which router will R1 choose? And Why?

Next, R1 is configured with a static IP route for, with the next-hop router configured as R2, R3, or R4. Which one? Pick whichever router you didn’t pick as the answer to the first question. Which route, and which next-hop router, does R1 use now for packets destined for

Answers: Summary Route Drill 3
Answer to the "Which Route..." question
Notify of

Newest Most Voted
Inline Feedbacks
View all comments
Dave in Ohio

1)R4 will be preferred due to lowest AD. Metrics are irrelevant here.

2) The static route will be preferred over any of the learned routes, again due to lowest AD.


Thanks Dave for the post. The answers post is now up as well. But I agree!

Would love your thoughts, please comment.x