BIRD is a very good and extremely stable piece of software. We run it on the global network I manage, mostly not in the core (hardware routers are required/bet

BIRD is a very good and extremely stable piece of software. We run it on the global network I manage, mostly not in the core (hardware routers are required/better at our scale) but we do run BGP on edge devices and use BIRD there, in a number of full-FIB situations as well. I will also say i've run OpenBGPD in the past, albeit in less demanding situations, and it worked well. That said, I don't recall any advantages OpenBGPD offers over something like BIRD and it was considerably less flexible, though that may not be so anymore.