OSPF neighbor problems can halt routing and disrupt entire networks, but most issues trace back to a handful of common causes. From mismatched hello timers to MTU misalignments, knowing what to check ...

Even Jeff Doyle tells me that I should do a little blogging with OSPF. What’s a networker to do with that kind of backing? And a few others expressed some interest as well – in understanding LSAs ...

So I've been messing around in GNS3 and created a topology which isn't quite working: Now, obviously this is a discontiguous network (I'm messing around to try and make stuff work when it ordinarily ...

Even if you work in an OSPF shop, most people don’t look OSPF database every day. Most people don’t think about the cost of OSPF routes by thinking about what LSAs the SPF algorithm examines to find ...