802.1Q Vlan Settings (Virtual Local Area Network) - D-Link DES-1526 Manual

Speed/Disable:
This setting has six modes—100M Full, 100M Half, 10M Full,
10M Half, Auto, and Disable—for speed or port disable
selections.
Flow Control:
This setting determines whether or not the Switch will be
handling flow control. Set FlowCtrl to Enable for avoiding data
transfer overflow. If it is set to Disable, there is either no flow
control or other hardware/software management.
When the 10/100M port is set to full-duplex mode, then the flow
control will be automatically set to disable; and if the 10/100M
port is set to half-duplex mode, the flow control will be
automatically set to enable.
QoS:
In some ports that need to have a high priority to manage the data
transfer, QoS should be changed. Set the port's QoS to high to
determine the port will always transfer their data first.

802.1Q VLAN Settings (Virtual Local Area Network)

A VLAN is a collection of switch ports that make up a single
broadcast domain. You can configure a VLAN for a single
switch, or for multiple switches. When you create a VLAN, you
can control traffic flow and ease the administration of moves,
adds, and changes on the network, by eliminating the need to
change physical cabling.
On VLAN settings, there are two main settings, VID Table
Setting and Port VLAN Setting.
VID: Select the VID group that you set.
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