TRENDnet TEG-S3000I - Manual (Page 97)

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MAC Filtering interface
VLAN configuration
A Virtual LAN (VLAN) is a logical network grouping that limits the broadcast domain. It
allows you to isolate network traffic so only members of the VLAN receive traffic from
the same VLAN members. Basically, creating a VLAN from a switch is logically
equivalent of reconnecting a group of network devices to another Layer 2 switch.
However, all the network devices are still plug into the same switch physically.
The switch supports port-based, 802.1Q (tagged-based) and protocol-base VLAN in
web management page. In the default configuration, VLAN support is “disable”.