Refer to the exhibit. The loopback IP of R3 has been learned via the two interfaces on R1. R1 is configured with a reference bandwidth of 10 Gbps. Based on the metric calculations, which next hop IP…

The correct answer is C. 10.12.0.6. With R1’s reference bandwidth set to 10 Gbps, the bottom link’s cost is 10 000 Mbps / 10 000 Mbps = 1, whereas the top link’s cost is 10 000 / 1 000 = 10. So the total cost to R3 via the bottom path is 1 (R1→R2) + 1 (R2→R3) = 2, versus 10 + 1 = 11 via the top link. R1 therefore…

Submitted by olafpl· Mar 5, 2026IP Connectivity

Question

Refer to the exhibit. The loopback IP of R3 has been learned via the two interfaces on R1. R1 is configured with a reference bandwidth of 10 Gbps. Based on the metric calculations, which next hop IP would be used for outgoing routing?

Exhibits

Options

A10.12.0.2
B10.12.0.1
C10.12.0.6
D10.12.0.5

How the community answered

(21 responses)

A
10% (2)
C
86% (18)
D
5% (1)

Explanation

With R1’s reference bandwidth set to 10 Gbps, the bottom link’s cost is 10 000 Mbps / 10 000 Mbps = 1, whereas the top link’s cost is 10 000 / 1 000 = 10. So the total cost to R3 via the bottom path is 1 (R1→R2) + 1 (R2→R3) = 2, versus 10 + 1 = 11 via the top link. R1 therefore uses the bottom-link neighbor, 10.12.0.6.

Topics

#OSPF#OSPF metric calculation#OSPF path selection#Reference bandwidth

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