While upgrading NSX-T, the Pre-checks reports the following warning : "The current order of edge nodes in group xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx is not optimal for Tier0 down time. Kindly reset plan for system to recalculate the order"

Products

• VMware NSX

Issue/Introduction

• While Upgrading NSX-T, the Pre-checks reports the following warning with respect to the Edge Nodes as seen on the GUI :

Environment

• The above is seen while Upgrading NSX-T from v3.x to v4.x, v4.x to v4.x as well.

Cause

• The above is an expected behaviour whereby in an Upgrade, the Edges hosting the active LR are presented first and the nodes hosting the Standby LR are next in line to be upgraded.
• In this scenario, during the Upgrade, the Edge Node hosting the active LR are going to be upgraded first which will lead to unnecessary failovers.

Resolution

• To resolve the above, there is an option called "Reset to Default" as seen in the below via the GUI :

• While clicking the above Option, the Edges in the Upgrade Groups are arranged in such a manner that the Edge Nodes hosting the Standby LRs get first in the list to be Upgraded.
• Post hitting the above Option, perform the Pre-checks again and the warning should have disappeared.