I used the INE CCNP Routing & Switching material throughout my studies, and came across a fantastic explanation of Type-1 & Type-2 LSA’s, and why Type-2 External LSA’s aren’t always equal, even know they both create a metric of 20.

Source: Understanding OSPF External Route Path Selection

About The Author


Timothy started his networking career in 2014, working for one of the largest telecommunication operators in Australia. When he's not working, he's obsessing over German Shepherd Dogs.