Allied Telesis AT-2746FX - Manual (Page 94)

Chapter 3: Microsoft Windows 2000, 2003, and XP
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An example of the Local Area Connection Properties window is shown
in Figure 54.
Figure 54. Local Area Connection Properties Window
3. Select Internet Protocol (TCP/IP), then click Properties.
Note
If the Properties button is greyed out and cannot be selected, it
probably means the system has the AT-MUX protocol and in Step 2
above you selected the icon for the adapter card instead of for a
VLAN. It is important to remember when setting the IP address,
subnet mask, and default gateway address on a system that has the
protocol that you must set this information on the individual VLANs
and not on the adapter card. To recover, simply close the Properties
window and repeat Step 2, this time selecting a VLAN icon.