> i have yet to see any service provider use BGP confederation in production.
I was part of one, back in the early 2000s. Reason was the parent ISP had set up offshoot ISPs in different countries, but they all had their own networks/ASes/transit/network policy. When they belatedly decided to unify the network, hiding the different daughter companies' networks behind a confederation AS was the easiest way. In other words, the network reflected the dysfunction of the organization.
I was part of one, back in the early 2000s. Reason was the parent ISP had set up offshoot ISPs in different countries, but they all had their own networks/ASes/transit/network policy. When they belatedly decided to unify the network, hiding the different daughter companies' networks behind a confederation AS was the easiest way. In other words, the network reflected the dysfunction of the organization.
Having said that, it worked very well.