Milan Technology MIL-SME801P - Manual (Page 129)

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5-4-7-2. 802.1Q VLAN
On this page, the user can create Tag-based VLANs, and enable or disable
GVRP protocol. There are 256 VLAN groups provided to configure. If 802.1Q
VLAN is enabled, then all ports on the switch belong to the default VLAN1.
The default VLAN1 can’t be deleted.
GVRP (GARP VLAN Registration Protocol)
GVRP allows automatic VLAN configuration between the switch and nodes. A
GVRP request can be sent using the VID of a VLAN defined on the switch
when the switch is connected to a device with GVRP enabled. The switch will
automatically add that device to the existing VLAN.