As part of a day 0 activity, you can prepare clusters of ESXi hosts for VLAN and or Overlay networking using NSX-T recommended host configurations.
The micro-segmentation wizard helps you finish installation with minimum user input, thus, simplifying the installation process. By default, VLAN networking is the default selection in the wizard.
ESXi hosts running 6.7 and earlier versions are prepared on the N-VDS host switch.
ESXi hosts running 7.0 and later are prepared on the VDS switch. Configure the desired number of uplinks on the VDS switch in vCenter Server and set the MTU to 1600.
Each host switch is assigned an auto-created transport zone and uplink profile.
As VMkernel adapters are migrated from existing switches to newly created switches, ensure to power off any VMs that are connected to VMkernel adapters.
Ensure compute managers are registered in NSX-T.
- From a browser, log in with admin privileges to an NSX Manager at https://<nsx-manager-ip-address>.
- Navigate to .
- On the Prepare Clusters for Networking and Security card, click Get Started.
- Select the clusters you want to prepare for NSX-T networking.
- Click Install NSX.
- Depending on your requirement, you can prepare the same cluster for both VLAN and Overlay networking or for one type of networking. With Overlay networking, each host switch is added with a TEP IP address, which is required for overlay networking.
- View the Host Switch Configuration switch to know the target switches where the physical NICs and VMkernel adapters (if any) will be migrated to.
This is the NSX-T recommended configuration. However, you can customize the settings for the cluster, even though it is an optional step.Note: A dotted line originating from a switch to a physical NIC indicates that it is an existing configuration on the host switch, which will be replaced by a firm line going to the same physical NIC.
- Even though NSX-T provides recommendations, you can still customize the configuration. To customize a switch, select the switch, and change the recommended configuration.
- Type: Switch over the host switch type.
- Transport Zone: Select a different transport zones that you want the host to be associated with.
- Uplink Profile: If needed, select a different uplink profile in place of the recommended uplink profile.
Note: If you configure two VDS switches with the same configuration, the wizard recommends the same uplink profile for both the switches.
- Uplink to Physical NIC mapping: On a VDS switch, all uplinks configured on the VDS switch are mapped to the uplinks in NSX-T. On an N-VDS switch, uplinks are mapped to vmnics.
A change to host switch type or uplink to vmnic mapping is reflected in the Host Switch Configuration network representation.
- Click Install.
View the progress of installation on the Prepare Clusters for Networking and Security card. If installation on any of the host fails, retry installation by resolving the error.
- To view successfully prepared hosts, go to .