You have the Super Administrator or Enterprise Administrator role permission to configure and manage logical switches.
VXLAN UDP port is opened on firewall rules (if applicable). The VXLAN UDP port can be configured through the API.
Physical infrastructure MTU is at least 50 bytes more than the MTU of the virtual machine vNIC.
Managed IP address is set for each vCenter Server in the vCenter Server Runtime Settings. See vCenter Server and Host Management.
DHCP is available on VXLAN transport VLANs if you are using DHCP for IP assignment for VMKNics.
A consistent distributed virtual switch type (vendor, and so on) and version is being used across a given transport zone. Inconsistent switch types can lead to undefined behavior in your logical switch.
You have configured an appropriate LACP teaming policy and connected physical NICs to the ports. For more information on teaming modes, refer to the VMware vSphere documentation.
5-tuple hash distribution is enabled for Link Aggregation Control Protocol (LACP).
For multicast mode, multicast routing is enabled if VXLAN traffic is traversing routers. You have acquired a multicast address range from your network administrator.
Port 1234 (the default controller listening port) is opened on firewall for the ESX host to communicate with controllers.
(Recommended) For multicast and hybrid modes, you have enabled IGMP snooping on the L2 switches to which VXLAN participating hosts are attached. If IGMP snooping is enabled on L2, IGMP querier must be enabled on the router or L3 switch with connectivity to multicast enabled networks.