Before moving to the upgrade there are some important notes around interoperability and supported ESXi versions as is explained in this VMwareKB. The minimum supported version of ESXi running with NSX-v 6.3.3 is as shown below:
- NSX-v 6.3.3 installed in a vSphere 5.5 environment requires a minimum version of ESXi 5.5 GA
- NSX-v 6.3.3 installed in a vSphere 6.0 environment requires a minimum version of ESXi 6.0 Update 2
- NSX-v 6.3.3 installed in a vSphere 6.5 environment requires a minimum version of ESXi 6.5a
If NSX 6.3.3 is installed on an earlier version of 5.5/6.0 ESXi, the netcpa service will fail to start preventing communication between ESXi hosts and the NSX Controllers.
Upgrading to NSX-v 6.3.3:
- The NSX Controller cluster must contain three controller nodes to upgrade to NSX 6.3.3. If it has fewer than three controllers, you must add controllers before starting the upgrade
- When you upgrade to NSX-v 6.3.3, instead of an in-place software upgrade, the existing controllers are deleted one at a time, and new Photon OS based controllers are deployed using the same IP addresses
There is also a slight increase to the size of the storage for the controllers from 20GB to 28GB. Once upgraded the NSX Controllers will be at version 6.3.6235594.
The last major step is to upgrade the Host components from the Host Preparation tab. On vSphere 6.0 and above once you have upgraded to NSX 6.3.x, all future NSX VIB changes do not trigger a reboot…only maintenance mode is required to complete the VIB change. In NSX 6.3.3 there is a change to the NSX VIB names on ESXi 6.0 and later where the esx-vxlan and esx-vsip VIBs have been merged and replaced with esx-nsxv as shown below.
VIB names on ESXi 5.5 remain the same.