EVPN VXLAN with IPv6 VTEPs and BGP IPv6 Unnumbered Underlay

IPv6 is designed with numerous automation features, including IPv6 auto-configuration. Implementing an IPv6 underlay with enabled auto-configuration in large-scale data center networks significantly reduces the effort required for network setup. As IPv4 addresses have been scarce for many years, the transition to IPv6 is gradually taking place.
For this test, we conducted two runs. In the first run, we utilized IPv6 underlay (IPv6 unnumbered underlay) and overlay, while the hosts continued to use IPv4. In the second run, we implemented IPv6 throughout the entire setup, including the underlay (IPv6 unnumbered underlay), overlay, and hosts. In both runs, we enabled Integrated Routing and Bridging (IRB), which operated in symmetric VLAN-based IRB mode. We sent full-mesh unicast traffic, meaning both routing and bridging were tested, and we observed no packet loss.
Spirent TestCenter was used as the traffic generator for this test.