If your other network devices support it, an Ethernet interface may be used simultaneously as a standard port and an 802.1Q VLAN port. To do this, configure an IP address directly on the physical interface and then define a vif for the interface. Assign the VLAN ID as the vif identifier and configure an IP address for the vif. (This feature may not be compatible with all Ethernet switches; some switches require a physical Ethernet interface to be exclusively either an 802.1Q interface or a standard Ethernet interface.)