The link shows the current virtual lines. It is used to establish a correspondence between the device's physical network interfaces and the target lines to be called on the Bandwidth Channel tab, specifying the interface (target line) for outgoing data that can match the traffic control channel. Click Add, and set the following parameters in the Add Link dialog box.

Link Name: Enter the name of the link.

Outbound Interface: Specify the interface for outbound data that can match the virtual line. You can only select a WAN interface.

Outbound: Set the outbound bandwidth of the physical line according to the actual bandwidth of the interface. Otherwise, the bandwidth management result may be unsatisfactory.

Inbound: Set the inbound bandwidth of the physical line according to the actual bandwidth of the interface. Otherwise, the bandwidth management result may be unsatisfactory.

If there are multiple WAN interfaces requiring bandwidth management, you need to define multiple virtual lines. Click Add to continue adding other virtual lines.

After defining the virtual line(s), set the corresponding virtual line rules to call the virtual line(s). Otherwise, the settings of the bandwidth channel will be invalid.