I've used BGP internally at my company for a decade, using AS65xxx range. At home I use BGP between the house, garage and shed, I much prefer it to OSPF.
Same! At previous company I worked at we used BGP for all internal/external routing about 15 years ago despite all the poo-pooing by using BGP as an IGP. It was nice having no route redistribution and one command to monitor sessions.
Open Shortest Path First (OSPF) is an "internal" routing protocol. Basically, it is a protocol for routers to share routes when all routers are managed by the same organization.
Border Gateway Protocol (BGP) has the primary purpose of sharing routes between routers managed by different organizations. It can be used within an organization too. It has a lot more control over how and which routes it sends and receives.
Depends how much you want to know about how networks work. Never ceases to amaze me how ignorant modern software developers are of the underlying technology, I guess that's because I'm from the pre-2010s when "Information Technology" was a general field.
I took some comp-sci and majored in "IT" in the 2000s. Lower level CS did not go over routing protocols, and the IT side never got into compilation, linking, state machines, or pointers.
In the 2000 my team had to deal with everything from compilation problems to hardware answering arp answers with fake mac addresses. The team consisted of a wide range of skills and abilities and information obviously leaks. While the DBA didn't need to know anything about OSPF, just by being in the same team as the network person they pick up how things work.
Now it seems that teams seem to be far more specialised and there's less cross-specialist learning.
I have trained people on network technologies, including the younger generation. It never ceases to amaze me how much they can get done without a clue about the underlying technologies. Sometimes it feels like they have some super power, because I can't operate without that knowledge.
