Planet Technology Planet Intelligent Gigabit Ethernet Stackable/Routing Switch WGSW-2402A - Manual (Page 277)

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When this switch receives these messages, it will automatically place the receiving port in the specified
VLANs, and then forward the message to all other ports. When the message arrives at another switch
that supports GVRP, it will also place the receiving port in the specified VLANs, and pass the message
on to all other ports. VLAN requirements are propagated in this way throughout the network. This
allows GVRP-compliant devices to be automatically configured for VLAN groups based solely on
endstation requests.
C.2 Forwarding Tagged/Untagged Frames
Ports can be assigned to multiple tagged or untagged VLANs. Each port on the Switch is therefore
capable of passing tagged or untagged frames.
To forward a frame from a VLAN-aware device to a VLAN-unaware device, the Switch first decides
where to forward the frame, and then strips off the VLAN tag. However, to forward a frame from a
VLAN-unaware device to a VLAN-aware device, the Switch first decides where to forward the frame,
and then inserts a VLAN tag reflecting this port’ s default VID.
The default PVID is VLAN 1 for all ports, but this can be changed.