VXLAN Fabric using EVPN with Cisco Nexus 9000 Switches

I deployed a VXLAN fabric using Cisco’s Nexus 9K switches recently, and started seeking out the best way to do things. I came up with a few questions that need to be answered first, and a configuration that I believe is best to use for most deployments.


The below diagram details a VXLAN fabric deployment.

VXLAN Fabric

VXLAN Fabric

As you can see, all the VLANs/subnets that are normally configured on switches are placed inside a separate routing table called a tenant VRF.  This allows for address separation amongst multiple tenants within the same physical fabric.  If only a single tenant uses the fabric, all the traffic processing remains within a tenant VRF.

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