Troubleshooting Tip: Different logical serial number on FortiGate and FortiCloud

Description

This article describes different logical serial numbers displayed on the FortiGate GUI/CLI and the FortiCare portal.

Scope

FortiOS.

Solution

FortiCare portal shows the serial number FGT60FHAxxxx91.

The FortiGate GUI shows the logical serial number as FGT60FHAxxxx81.

To resolve the issue, follow the steps below:

1. Disable logical-sn under HA settings.
   
   

config system ha
set logical-sn disable
end

2. Reboot both FortiGate instances.

3. Enable logical-sn under HA settings.
   
   

config system ha
set logical-sn enable
end

4. Finally, verify within the FortiGate GUI that it has updated with the serial number that appears in the FortiCare portal.