Troubleshooting Tip: Logical serial number on FortiGate HA different from FortiCare Portal

Description

This article describes the logical serial number on FortiGate HA different from the FortiCare Portal.

Scope

FortiGate HA.

Solution

After registering the HA SKU in the FortiCare portal, the logical serial number will be visible on the registration dashboard.

Sample:

Logical SN: FGT60FHAxxxx91.

Device 1: FGT60FTKxxxxxx.

Device 2: FGT60FTKxxxxxx.

The FortiGate GUI it show logical serial number of FGT60FHAxxxx81, which is different from the FortiCare portal.

To resolve the issue, follow the proper setup steps below:

1. Disable logical-sn on the primary FortiGate HA.
   
   

config system ha
set logical-sn disable
end

2. Reboot both FortiGates.

3. Enable logical-sn on the primary FortiGate HA.
   
   

config system ha
set logical-sn enable
end

4. FortiGate GUI/CLI will show the correct logical serial number.