Edimax Technology ES-3124REM - Manual (Page 33)

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4.7.2 802.1Q VLAN
In this page, you can create Tag-based VLAN, and enable or
disable GVRP protocol. There are 256 VLAN groups to
configure. Enable 802.1Q VLAN, the all ports on the switch
belong to default VLAN, VID is 1. The default VLAN can’t be
deleted.
GVRP (GARP [Generic Attribute Registration Protocol] VLAN
Registration Protocol) GVRP allows automatic VLAN
configuration between the switch and nodes. If the switch is
connected to a device with GVRP enabled, you can send a
GVRP request using the VID of a VLAN defined on the switch,
then it will automatically add that device to the existing VLAN.