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The following are typical issues you may face when configuring VXLAN:

• Incorrect VTEP VMKNic teaming policy
• Incorrect VLAN ID for VTEP
• Incomplete IP address for VTEP
• DHCP is selected for the VTEP VMKNic IP addressing but the DHCP server is not available or is unreachable
• VXLAN was installed on the ESXi host but not cleaned up properly and requires a host reboot

The vDS Health Check can be used to check the vDS configuration against the VLAN and MTU mismatch. Refer to VMware KB 2032878 (https://kb.vmware.com/kb/2032878) to learn how to enable the vDS Health Check