OSPF: Why the "Shortest Path" Isn't Always the Best Path

This week, I was deep in a multi-area OSPF lab on Cisco NX-OS and stumbled onto a scenario that defies standard "Cost" logic. The lab setup: 4x Cisco N9K switches in different OSPF areas. ASBR R4: Injecting a default route (0.0.0.0/0), Type E1, Me...