Fortigate OSPF Failure Cases with Debug

Table of Contents Introduction Case 1: OSPF Adjacency Forming but no routes are exchanged due to Mismatched Network Types Case 2: OSPF Adjacency Not Forming due to Mismatched Hello and/or Dead Intervals Mismatched Dead interval only Case 3: OSPF Adjacency Not Forming due to Mismatched MTU Case 4: Mismatched …