An interface can only be assigned to one of the VDOMs. When split-task VDOM mode is enabled, all interfaces are assigned to the root VDOM. To use an interface in a policy, it must first be assigned to the traffic VDOM.
An interface cannot be moved if it is referenced in an existing configuration.
In the GUI, the interface list Ref. column shows if the interface is referenced in an existing configuration, and allows you to quickly access and edit those references.
- On the FortiGate, go to Global > Network > Interfaces.
- Edit the interface that will be assigned to a VDOM.
- Select the VDOM that the interface will be assigned to from the Virtual Domain list.
- Click OK.
config system interface
set vdom <VDOM_name>