3Com WX1200 Reference Manual page 210

210 C 6: C
HAPTER ONFIGURING
WX S P
YSTEM ARAMETERS
VLAN names must be globally unique across a Mobility Domain to ensure
the intended user connectivity as determined through authentication and
authorization.
Every VLAN on a WX has a VLAN name, used for authorization purposes,
and a VLAN number. VLAN numbers can vary uniquely for each WX and
are not related to 802.1Q tag values even when used.
3 In the VLAN ID box, specify a VLAN number (2 to 4093). The VLAN
number must be unique on a particular WX.
4 Click Next.
5 From the list of available members, select a port or port group (if you
previously created port groups).
If a port or port group is currently a member of a VLAN, the VLAN name is
listed in the VLAN(s) column. To make multiple selections, press Shift (for
contiguous items) or Control (for noncontiguous items) while clicking items.
6 Do one of the following:
To add a port or port group to the VLAN and remove previous VLAN
membership, click Move.
Moving a port or port group could potentially affect multiple VLANs.
To add a port or port group to the VLAN and retain previous VLAN
membership, click Add.
7 Click Next.
8 To add an IP interface to the VLAN, do one of the following:
Statically configure an address by editing the IP address and subnet
mask (for example, 10.10.10.10/16).
Select DHCP Client to use a DHCP server to dynamically obtain an IP
address for the VLAN.
Generally, VLANs are equivalent to IP subnets. If a WX is connected to the
network by only one IP subnet, the WX must have at least one VLAN
configured. Optionally, each VLAN can have its own IP address. However,
no two IP addresses on the switch can belong to the same IP subnet.
MSS does not support assigning a switch's system IP address to an
address received through the DHCP client. 3Com recommends that you
use the DHCP client only on WXR100 switches that you plan to configure
using the drop-ship method.
9 Select Interface Enabled to enable the IP interface.
10 Click Finish.