Question

A network engineer upgrades several router uplinks to 10 Gbps but notices OSPF still calculates the same cost (1) for both the new 10 Gbps links and the older 1 Gbps links, causing suboptimal path selection. Which action correctly resolves this so faster links are preferred?

Accepted Answer

Configure 'auto-cost reference-bandwidth 10000' on all routers in the OSPF domain

Answer

Lower the OSPF administrative distance on the 10 Gbps interfaces

Answer

Change the OSPF network type on the 10 Gbps links to point-to-point

Answer

Increase the OSPF hello interval on the 1 Gbps links so they are less preferred