7.2. Configure 802.1Q VLAN tagging Using the Text User Interface, nmtui

The text user interface tool nmtui can be used to configure 802.1Q VLANs in a terminal window. Issue the following command to start the tool:
~]$ nmtui
The text user interface appears. Any invalid command prints a usage message.
To navigate, use the arrow keys or press Tab to step forwards and press Shift+Tab to step back through the options. Press Enter to select an option. The Space bar toggles the status of a check box.
From the starting menu, select Edit a connection. Select Add, the New Connection screen opens.
The NetworkManager Text User Interface Add a VLAN Connection menu

Figure 7.1. The NetworkManager Text User Interface Add a VLAN Connection menu

Select VLAN, the Edit connection screen opens. Follow the on-screen prompts to complete the configuration.
The NetworkManager Text User Interface Configuring a VLAN Connection menu

Figure 7.2. The NetworkManager Text User Interface Configuring a VLAN Connection menu

See Section 7.5.1.1, “Configuring the VLAN Tab” for definitions of the VLAN terms.