Wednesday, October 23, 2019

Auto-MLAG and Auto-BGP in Cumulus Linux

When I first met Cumulus Networks engineers (during NFD9) their focus on simplifying switch configurations totally delighted me (video).

I was ranting about the more traditional approach to data center fabric configuration resulting in dozens if not hundreds of device configuration commands in 2013… and other vendors still haven't done much in this respect in the meantime.

After solving the BGP configuration challenge (could you imagine configuring BGP in a leaf-and-spine fabric with just a few commands in 2015), they did the same thing with EVPN configuration, where they decided to implement the simplest possible design (EBGP-only fabric running EBGP EVPN sessions on leaf-to-spine links), resulting in another round of configuration simplicity.

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Thanks to Ivan Pepelnjak (see source)

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