Tuesday, October 8, 2019

VMware NSX Killed My EVPN Fabric

A while ago I had an interesting discussion with someone running VMware NSX on top of VXLAN+EVPN fabric - a pretty common scenario considering:

  • NSX’s insistence on having all uplinks in the same subnet;
  • Data center switching vendors being on a lemming-like run praising EVPN+VXLAN;
  • Non-FANG environments being somewhat reluctant to connect a server to a single switch.

His fabric was running well… apart from the weird times when someone started tons of new VMs.

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Thanks to Ivan Pepelnjak (see source)

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