Ubersmith allows for the organization of information relating to virtual LANs, or VLANs within the IP Management facilities of the system.
VLAN Ranges
The 'VLAN Ranges' link in Settings, provides a listing of existing VLAN ranges as well as an interface to create a new VLAN range.
Add VLAN Range
The 'Add VLAN Range' popup allows you to specify a descriptive name for the range, the range itself: (i.e. something like '1 - 10'), if the VLANs should be shared between devices/clients, and if they are private or public. The private/public option is strictly for organizational purposes; it does not have any additional functionality within the system. You can also enter further descriptive text to describe the VLAN range, if desired.
The Facilities tab of the Add VLAN Range popup will allow you to determine which of your facilities this VLAN applies to (i.e. where it can and should be used).

