We found an issue on NSXT 3.1 attempting to prep an esx host as a tranpsort node.
ESXi hosts have no previous NSX-T transport node configuration and are fairly new so this isn’t an exisitng topology with NSX-T configured.
My esx host runs on 7.0.1 and NSX-T is on 3.1 and distributed switch is on version 7.0.
As per the compatibility matrix I should be able to add both a converged vDS and nVDS switch and If we try to go to with n-VDS option it works but the converged VDS option fails to push NSX bundles on to host
This is the version of vDS
The issue i found when i tried to install a converged route is as shown
It alerts us with a service insertion module issue
I attempted rebooting the vCenter, NSX-T and tried all the usual NSX-T troubleshooting but the issue here is my vDS switch was upgraded to v7.0.
The resolution to this error as I found is to create a new DVswitch on v7.0 and migrate all the hosts across to the new DVSwitch
After the host is attached to the new vDS switch and if you try to prep the host, it works well.
As you prep the host, select the new VDS switch you created
As you see, the install is succesful.
After few minutes, we can see the NSX Switch added
Hope this is helpful for you.