Before using a VXLAN, check whether you have met the following requirements:
Ensure that IP multicasting is supported on the network. If IP multicasting is not supported, VMs in the VXLAN cannot communicate with each other.
If the VXLAN includes servers in different IP subnets, then multicast routing must be supported across the subnets. If multicasting routing is not supported, only the VMs over the VXLANs on the same IP subnet can communicate with each other and VMs over VXLANs on different IP subnets, for example, geographically dispersed data centers cannot communicate with each other.
For more information about naming conventions of a VXLAN datalink, see VXLAN Naming Convention.