Tuesday 17 April 2018

VXLAN Part VI: VXLAN BGP EVPN – Basic Configurations

In my previous post “VXLAN Part V: Flood and Learn”, I have shown, how VXLAN works without Control Plane protocol. In this post, I am going to show how to configure BGP EVPN on VXLAN fabric.

In Figure 1, you can see the high-level overview of our example VXLAN fabric design. We have one vrf context (=tenant) TENANT77 spread over the two VTEPs. We also have two VLANs; VLAN 10 (attached to L2VNI 10000) and VLAN 20 (attached to L2VNI 20000). On each VTEPs there are two connected hosts (Cafe and Abba on VTEP-101, Beef, and Babe on VTEP-102). The cross VLAN flows between the hosts in different VTEPs is routed over the L3VNI 10077. The reason why I start with the configurations is that I want to use show commands as well as Wireshark captures while explaining the theory in my next post.


Note! I am using Cisco VIRL with Nexus 9000v (nxos.7.0.3.I7.1.bin).


Figure 1: VXLAN BGP EVPN

Updated: February 21.4.2018 | Toni Pasanen