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Nine episodes. Started with what BGP is. Ended with confederations and address families.

If you watched all of it, you actually understand BGP now. Final episode.

Nine episodes. Thirteen blog posts. A lot of bourbon.

Everything we covered, what stuck, and what you should build next.

You've been using BGP for IPv4 and assuming that's the whole story.

It's not. IPv6, MPLS VPNs, EVPN. All of it runs on BGP through address families.

BGP doesn't just route IPv4. It handles IPv6, MPLS VPNs, and EVPN through address families.

Most people skip this part until they're actually stuck on something.

There's another way to fix iBGP scaling besides route reflectors. Almost nobody talks about it at work.

BGP Confederations. Sub-ASes. eBGP-like sessions inside your own AS.

Confederations split one AS into sub-ASes. From outside you're still one AS. Inside, sub-ASes use eBGP-like sessions.

Full mesh stops being your problem.