i have yet to see any service provider use BGP confederation in production.<p>The idea seems kinda neat, but Route reflectors scale so well nowadays, that a confederation setup seems kind of wasteful and overly complex. Especially with behaviour like this appearing.<p>Also, im curious how other routing operating systems would behave when encountering massive AS-paths.<p>According to the article, IOS seems to crash irregulary. I wonder if these kind of things are being fuzzed by the network operating system vendors aswell, especially conisdering there is no upper limit on AS-PATH length defined in the RFC.
BGP confederations are still used in some large SP networks today, mostly because it's hard to transition away from it. However, it hasn't been a recommended solution for scaling BGP for 15+ years now. I had someone approach me recently wanting to deploy them after reading a BGP book written 20 years ago. No.
Are there any good resources for learning about BGP/BGP security? I’d love to build a lab for it to get some hands on experience but don’t really know where to start