Allied Telesis AT-S25 - Manual (Page 244)

Section III: Web Browser Management
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5. The AT-S25 management software automatically assigns the next
unused VID in the stack as the VID for the new VLAN. To assign the
VLAN a different VID, click the VID field and enter a new VID for the
VLAN. The range is 2 to 2048. The VID must be unique from the other
VLANs defined in the same stack.
6. Click the Name text field and enter a name for the new VLAN of from
one to fifteen alphanumeric characters. The name should reflect the
function of the nodes of the VLAN (for example, Sales or Accounting).
The name can contain spaces, but not special characters, such as
asterisks (*) or exclamation points (!). A VLAN must have a name.
A VLAN’s name must be unique on the stack. You cannot assign
the same name to two VLANs in the same stack.
7. To add tagged and untagged ports to the VLAN, specify the ports in
the Untagged Ports and Tagged Ports fields next to each module. You
can specify the ports individually (e.g., 2,5,11), as a range (e.g., 5-10),
or both (e.g., 3,7,11-15,17).
8. Click Apply.
The new VLAN is now operational.
Repeat this procedure starting with Step 4 to create additional
port-based and tagged VLANs.
Note
When you create a new VLAN, ports designated as untagged ports
of the new VLAN are automatically removed from their current
untagged VLAN assignment. For example, if you are creating a new
VLAN on a switch that contains only the Default_VLAN, the ports
that you specify as untagged ports of the new VLAN are
automatically removed from the Default_VLAN when they are
moved to the new VLAN.
Tagged ports are not removed from any current VLAN assignments
because tagged ports can belong to more than one VLAN at a time.