Imagine this scenario:
R1's serial 1 is connected to
R2's serial 1, it's a simple p2p link. Quite simple, right?
When I changed the network type on the both sides to non-broadcast, for any unreasonable reason, the adjacency dropped and everything collapsed :) I know about OSPF network types and am also well aware of the troubleshooting process. I issued almost any show/debug command; everything mostly matches on both sides: timers, area, etc. But it doesn't work, why? How do I get it working?