Allied Telesis AT-2746FX - Manual (Page 170)

Chapter 9: AT-MUX Multiple VLAN Protocol
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An example of the Local Area Connection Properties window for the
adapter card is shown in Figure 105.
Figure 105. Local Area Connection Properties Window
3. Select Allied Telesyn Multi-Vlan Support Protocol, then select
Properties.
Note
If the Properties button is greyed out and cannot be selected, it
probably means in Step 2 you selected a LAN connection icon for a
VLAN instead of for the adapter. It is important when adding,
changing, or deleting VIDs that you select the network adapter
card’s LAN connection icon, identified by the model number in the
icon’s label, and not a LAN connection for a tagged VLAN. To
recover, simply close the Properties window and repeat Step 2, this
time selecting the card’s icon.