Saturday, July 13, 2019

HomeLab Network Redesign: BGP over IGP

Posted a diagram over in r/homelab of my redesigned network. The initial response was quite a bit of confusion around peering iBGP sessions over an IGP, in my case OSPF. I realize iBGP isn't quite as popular as the typical leaf/spine eBGP architectures, but alas, what I'm limited to with a traditional 3-tier and NSX-T install base which only supports BGP.

Am I way off assuming that OSPF is still the preferred IGP to peer out loopback interfaces that establish BGP sessions? The importance of that was around always-up interfaces to allow multi-path selection in the event of a downed interface.



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