Proscend 6200-2W, Руководство пользователя

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Ports in the same VLAN group share the same frame broadcast domin thus increase network
performance through reduced boardcast traffic. VLAN groups can be modified at any time by adding, moving or
changing ports without any re-cabling.
Before enabling VLANs for the VPN Router, you must first assign each port to the VLAN group(s) in which it will
participate. By default all ports are assigned to VLAN1 as untagged ports. Add a port as a tagged port if you want it to
carry traffic for one or more VLANs, and any intermediate network devices or the host at the other end of the
connection supports VLANs. Then assign ports on the other VLAN-aware network devices along the path that will carry
this traffic to the same VLAN(s), either manually or dynamically using GVRP. However, if you want a port on this VPN
Router to participate in one or more VLANs, but none of the intermediate network devices nor the host at the other
end of the connection supports VLANs, then you should add this port to the VLAN as an untagged port.
Note: VLAN-tagged frames can pass through VLAN-aware or VLAN-unaware network
Inter-connection devices, but the VLAN tags should be stripped off before passing it on to any end-node host that
does not support VLAN tagging.
VLAN Classification – When the VPN Router receives a frame, it classifies the frame in one of two ways. If the frame is
untagged, the VPN Router assigns the frame to an associated VLAN (based on the default VLAN ID of the receiving
port). But if the frame is tagged, the VPN Router uses the tagged VLAN ID to identify the port broadcast domain of the
frame.