Hey everyone! I'm learning the basics of VXLAN and I'm trying to grasp exactly what's going on in the background. At its core, VXLAN is used to either bridge between a single layer 2 segment, or route between two separate layer 2 segments/ layer 3 subnets. From my understanding it seems that VXLAN utilizes a layer 3 underlay to provide a stable foundation for the overlay to efficiently send traffic, and provide the benefits of L3 load-balancing/stability, while reducing the side effects of spanning layer 2. My reading mentioned multiple L3 protocols that could be used, but really hit home on MBGP-EVPN, is that the primary underlay technology used? Reading into MBGP-EVPN, it sounds like its simply using BGP to create multiple tunnels over the single BGP session, each tunnel can be assigned to different VNIs to encapsulate the traffic. Please feel free to jump in and let me know anything I may have wrong, trying to understand the idea the best I can. I greatly appreciate any response!
