American Fibertek SMH10p-PoE - Manual (Page 85)

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6.18 VLAN configuration
A Virtual LAN (VLAN) is a logical network grouping that limits the broadcast domain,
which would allow you to isolate network traffic, so only the members of the same
VLAN will receive traffic from the ones of the same VLAN. Basically, creating a VLAN
on a switch is logically equivalent of reconnecting a group of network devices to
another Layer 2 switch. However, all the network devices are still plugged into the
same switch physically.
This switch supports Port-based and 802.1Q (tagged-based) VLAN. The default
configuration of VLAN operation mode is “Disable”.
VLAN Configuration interface