Verify that the ARP Reply from Core Interface is Encapsulated in Unicast to a VXLAN UDP Destination Port The following image shows the ARP reply from core interface that is encapsulated in unicast, between VXLAN Loopbacks, to the VXLAN UDP destination port 4789 in the VNI 10001 and VLAN 10. Once all of the above checks are verified, if there is still a problem with broadcast reachability, then repeat the checks on the remote VTEP. Troubleshooting Unicast Forwarding Between VTEPs in the Same VLAN Through a Layer 2 VNI This scenario might occur when host device 2 in VLAN 10 attempts to ping host device 3 that is also in VLAN 10.
Perform the checks listed in the following table before troubleshooting unicast forwarding between VTEPs in the same VLAN through a Layer 2 VNI: Troubleshooting BGP EVPN VXLAN Troubleshooting Unicast Forwarding Between VTEPs in the Same VLAN Through a Layer 2 VNI Troubleshooting BGP EVPN VXLAN 6