Inter-VDOM routing

VDOM links allow VDOMs to communicate internally without using additional physical interfaces.

Inter-VDOM routing is the communication between VDOMs. VDOM links are virtual interfaces that connect VDOMs. A VDOM link contains a pair of interfaces, each one connected to a VDOM and forming either end of the inter-VDOM connection.

When VDOMs are configured on your FortiGate unit, configuring inter-VDOM routing and VDOM links is like creating a VLAN interface. VDOM links can be managed in either the CLI or in the network interface list in the GUI.

Note

VDOM link does not support traffic offload. If you want to use traffic offload, use NPU-VDOM-LINK.

To configure a VDOM link in the GUI:
  1. In the Global VDOM, go to Network > Interfaces.
  2. Click Create New > VDOM Link.
  3. Configure the fields, including the Name, Virtual Domain, IP information, Administrative Access, and others, then click OK.
Note

By default, VDOM links are created as point-to-point (ppp) links. If required, the link type can be changed in the CLI.

For example, when running OSPF in IPv6, a link-local address is required in order to communicate with OSPF neighbors. For a VDOM link to obtain a link-local address its type must be set to ethernet.

To configure a VDOM link in the CLI:
config global
    config system vdom-link
        edit "<vdom-link-name>"
            set type {ppp | ethernet}
        next
    end
    config system interface
        edit "<vdom-link-name0>"
            set vdom "<VDOM Name>"
            set type vdom-link
        next
        edit "<vdom-link-name1>"
            set vdom "<VDOM Name>"
            set type vdom-link
        next
    end
end
To delete a VDOM link in the GUI