On a newly deployed cluster prepared for NSX, TEP IPs between ESXi hosts were not reachable
3.2.2
The physical uplinks connected with every ESXi hosts were found to be misconfigured
After configuring correct physical uplinks on every ESXi hosts, the TEP IPs were reachable. The "vmkping" between TEP interfaces was successful
Refer KB KB 344313 to test vmkernel connectivity between TEP interfaces of ESXi hosts using "vmkping" command