3com 3CRWXR10095A User Manual

A port or port group can be in one or more VLANs. To be in multiple 
VLANs, the port or group must have an 802.1Q VLAN tag. A tag is a 
numeric value that identifies a virtual port within the VLAN. The same 
VLAN can have different tag values on different ports. However, a port 
can have only one tag value in a given VLAN. A VLAN can also have 
untagged ports. An untagged port can be a member of only one VLAN. 

MSS supports the IEEE 802.1Q tag type, described in the IEEE 802.1Q 
specification.

The tagging capabilities of the WX are flexible. You can assign 802.1Q 
tag values on a per-VLAN, per-port basis. The same VLAN can have 
different tag values on different ports. In addition, the same tag value can 
be used by different VLANs but on different network ports. 

If you use a tag value, 3Com recommends that you use the same value as 
the VLAN number. MSS does not require the VLAN number and tag value 
to be the same, but some other vendors’ devices do.

1 Access the VLAN table:

a Select the Configuration tool bar option.

b In the Organizer panel, click the plus sign next to the WX switch. 

c Click the plus sign next to System.

d Select VLANs.

2 In the Content panel, select the VLAN. 

3 In the Task List panel, select Configure VLAN Members.

4 To add a port or port group to the VLAN and remove previous VLAN 

membership, select the port or port group and click Move.

To make multiple selections, press Shift (for contiguous items) or 
Control (for noncontiguous items) while clicking items.

5 To add a port or port group to the VLAN and retain previous VLAN 

membership, select the port or port group and click Add.