HP Network Direr Software Products manual Tagged VLANs

Components 555

To modify the VLAN on which the selected ports will transmit untagged packets, select another VLAN from the drop-down menu. The drop-down menu contains all VLANs currently being used on your network.

If you choose to modify the untagged VLAN for the selected ports, when you click the Next button 3Com Network Director will warn you that you may lose contact with the devices connected to these ports on the current untagged VLAN. For example:

Figure 301 Warning Dialog

This is just a warning – you may still proceed with your selection.

Tagged VLANs

When the wizard stage first appears, the list box in the centre of the dialog box will display those VLANs on which the selected ports are currently transmitting tagged packets. These VLANs are indicated by a checked check box. In the example above, the selected ports are currently transmitting tagged packets on VLANs account ID 2 and engineering ID 3.

If the selected ports do not currently transmit tagged packets on any VLANs, none of the check boxes in the list will be checked. If only some of the selected ports transmit tagged packets on a particular VLAN, the corresponding check box will be checked but will also be grayed. These are known as tri-state check boxes.