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In chart 1, there is a layer 2 switch without setting VLAN. Any broadcast frame will be
transmitted to the other ports except the send port. For example, a broadcast information is sent
out from port 1 then transmitted to port 2,3and 4.
In chart 2, red and blue indicate two different VLANs in the switch, and port 1 and port 2 belong
to red VLAN, port 3 and port 4 belong to blue VLAN. If a broadcast frame is sent out from port 1,
switch will transmit it to port 2, the other port in the red VLAN and not transmit it to port3 and
port 4 in blue VLAN. By this means, VLAN divide the broadcast domain via
restricting the range
of broadcast frame transmition.
Note: chart 2 use red and blue to identify the different VLAN, but in practice, VLAN uses
different VLAN IDs to identify.
QoS Configuration
Field name
explanation
VLAN Enable
Before select it to enable VLAN, you need enable Bridge mode in
LAN config.
