Technical Tip: Unable to change managed FortiSwitch name after upgrading to FortiOS (FortiGate) v7.4.x+

[kaurg_FTNT]

Description	This article describes an issue where, after upgrading the FortiGate from v7.0, v7.2 to v7.4, users are unable to change the managed FortiSwitch name from the GUI.
Scope	FortiGate v7.4.x, FortiSwitch.
Solution	In version FortiOS (FortiGate) v7.2 and prior versions, it is possible to make the switch name changes by using the following CLI command: config switch-controller managed-switch     edit <switch-id>       <----- Usually this switch-id is the serial number.         set name <NAME>     next end This can also be done the following way in the GUI:   The command 'set name' has been removed from FortiOS v7.4.x+. When upgrading is complete, the switch names are now restored as switch-id. Therefore, the managed FortiSwitch name cannot be changed when the device is already authorized. Since FortiOS 7.4 allows the switch-id to be a maximum of 16 characters in length, any switch names meeting this criterion will now be seen in 'switch-id'. Any switch name that exceeds the maximum character criteria will be lost after an upgrade. See this documentation: Defining names for managed switches When upgrading the firewall, the switch names are lost. It is only possible to see the FortiSwitch serial number in the 'Name' field in the GUI. To rename the managed FortiSwitch in FortiOS (FortiGate) v7.4 from the GUI, it is required to de-authorize the FortiSwitch and then rename it. This will cause the FortiSwitch to go offline, so this must be done during a maintenance window to avoid any outages during production time. To add the FortiSwitch name, rename the managed FortiSwitch using the following CLI command on FortiGate: config switch-controller managed-switch     rename <switch-id> to <NAME> end Once renamed, it will show a warning that the managed switch will go offline momentarily. Type 'y' and press enter. After the change is made, the FortiGate GUI will reflect the change. Note: Renaming the managed FortiSwitch from the CLI is deauthorizing the FortiSwitch in the background and thus causing the FortiSwitch to go offline. Therefore, this must also be done during a maintenance window to avoid any outages during production time. The name cannot be edited via the GUI. This behavior is part of the feature change on FortiOS (FortiGate) v7.4.0. It is added under New Feature in the Release notes of FortiOS v7.4.0 with ID 769722. As of the introduction of this feature, it is no longer possible to edit the serial number of the device. It is a read-only command. Even if it was configured via the CLI, the following error would be thrown after it exits the hierarchy:    When FortiSwitch ports are exported to other VDOMs, refer tto his article for a workaround: Troubleshooting Tip: Configuration Sync Error on FortiSwitch After Upgrading FortiGate from v7.2.8 t.... Related document: New features or enhancements