Arista BGP EVPN – Configuration Example

This is a follow-up to my previous article, Arista BGP EVPN Overiew and Concepts. In the previous article, I discussed some terminologies and behavior of EVPN and the reason why EVPN is valuable in Data Center and Campus networks. Since then, I’ve learned how valuable it is in Service Provider networks as well, but I’ll save that for another day. In this article, I want to walk through a configuration example.

In this topology, we have 2 Spines and 8 Leafs. Each pair of Leafs will form a VXLAN Tunnel Endpoint (VTEP). We will start with the initial configuration of underlay components, such as MLAG and underlay BGP. Next, we’ll configure the EVPN overlay and VTEPs. Lastly, I’ll give an example configuration of L2VXLAN (EVPN Type-2) and L3VXLAN (EVPN Type-5). While most of this configuration will function in production networks, I highly advise first building something out virtually to do testing (GNS3, Vagrant, what-have-you). I won’t be covering special use cases or every possible configuration parameter, but hopefully this is a good start to get you going on to super deep dives.

I’ll have a complete configuration workbook attached at the end of this blog.

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