Configuring Loopback Interfaces for IPv4 (C-Web Interface)
Loopback interfaces are for private use only by software running on the C Series Controller, to communicate with other software also running on the same C Series Controller.
To configure a loopback interface for IPv4:
Click Configure, expand Interfaces, and then click Interface: lo.
The Interface: lo pane appears.
To specify the unit:
From the Create new list, select Unit.
In the dialog box, type a number for the new unit, and click OK.
The Unit: <number> appears in the side pane.
To specify an IPv4 address for the interface, expand Unit: < number >, and then expand Family in the side pane.
The Inet pane appears.
Click the Create button.
Enter information as described in the Help text in the main pane, and click Apply.