VXLAN - MP-BGP EVPN and Multicast
MP-BGP EVPN is an efficient protocol for handling unicast traffic in VXLAN environments. However, it does not address BUM traffic (Broadcast, Unknown unicast, and Multicast) traffic. To handle BUM traffic, a obsidian/notes/Multicast underlay or static ingress replication is still required. Multicast is typically chosen for most implementations due to its scalability and flexibility.
In a typical VXLAN deployment using MP-BGP EVPN:
- MP-BGP EVPN handles unicast traffic efficiently, reducing the need for flood-and-learn mechanisms.
- Multicast (or static ingress replication) is used for BUM traffic.
- The combination of MP-BGP EVPN and multicast provides a comprehensive solution for all traffic types in VXLAN networks.
This dual approach ensures that both unicast and BUM traffic are handled effectively, maintaining network efficiency and functionality.
Links:
https://forum.networklessons.com/t/vxlan-mp-bgp-evpn-l2-vni/49260/5?u=lagapidis