NZ UFB configuration on Sophos Appliances

Sophos UFB VLAN Configuration

This method builds a VLAN sub-interface on a physical interface. It is most useful when sharing a single interface for multiple VLANs. Note that there is an easier/tidier way to configure outlined in this LB article: https://support.snappernet.co.nz/a/solutions/articles/5000898479

Please see the PDF download for sample setup for PPPoE over VLAN ID = 10.

Background: 802.1Q VLANs in this context are virtual interfaces on the router that are built on top of a physical network interface. If the underlying physical interface is not configured the Sophos OS will not ‘start’ it. Therefore the virtual sub interfaces also won’t start. The idea is to create a dummy address & zone for the physical interface so that it is considered configured & will therefore start.