Configure==>Subinterfaces

To view, create, and edit Ethernet subinterfaces on an active PortMaster, click Subinterfaces. You must configure the primary Ethernet interface (Configure==>Ethernets) before adding subinterfaces.

Configure a single Ethernet port for multiple IP subinterfaces. Instead of subnetting and routing, you can create a subinterface and set it up as you would a standard Ethernet interface. Subinterfaces have the same media access control (MAC) address as their primary Ethernet interface.

CAUTION! Avoid routing loops by not creating two subinterfaces in the same TCP/IP network on the same port. Each Ethernet subinterface must have a unique network.

Limitations:

Adding a Subinterface
How to Configure
Subinterfaces Settings