Interesting. I thought IS-IS was commonly used as the IGP for very large networks, and OSPF or EIGRP (cisco) being used for smaller to medium sized networks. With a relatively few folks using iBGP.
Aw, I was hoping for more detail than testimonial but maybe there will be a follow up. Definitely got my interest since we have a BGP Clos design at work and I’d love a different perspective.