The VXLAN network is used for Layer 2 logical switching across hosts, potentially spanning multiple underlying Layer 3 domains. You configure VXLAN on a per-cluster basis, where you map each cluster that is to participate in NSX to a vSphere distributed switch (VDS). When you map a cluster to a distributed switch, each host in that cluster is enabled for logical switches. The settings chosen here will be used in creating the VMkernel interface.
For details on prerequisites see Configure VXLAN from the Primary NSX Manager
- Using the vSphere Web Client, log in to the vCenter Server system registered with the NSX Manager you want to modify.
If the vCenter Server systems in your cross-vCenter NSX environment are in Enhanced Linked Mode, you can access any associated NSX Manager from any linked vCenter Server system by selecting it from the NSX Manager drop-down menu.
- Navigate to Host Preparation tab. and select the
- Verify the correct NSX Manager is selected in the NSX Manager drop-down menu.
- Click Not Configured in the VXLAN column.
- Set up logical networking.
This involves selecting a vSphere Distributed Switch, a VLAN ID, an MTU size, an IP addressing mechanism, and a NIC teaming policy.
These example screens show a configuration for a management cluster with IP pool address range of 188.8.131.52-192.168.150.100, backed by VLAN 150, and with a failover NIC teaming policy.
The number of VTEPs is not editable in the UI. The VTEP number is set to match the number of dvUplinks on the vSphere distributed switch being prepared.
For compute clusters, you may want to use different IP address settings (for example, 192.168.250.0/24 with VLAN 250). This would depend on how the physical network is designed, and likely won't be the case in small deployments.