Edimax Technology Edimax 24 10/100TX + 2 10/100/1000T/Mini-GBIC Combo Web Smart Switch ES-5226RS - Manual (Page 32)

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care, and RemoveTag—for selecting.
¾ Uplink: In normal operation, if the destination and source are located in
different VLANs, the packets will be dropped. Having ticked the radio
button, the port is configured as an up-link port which is used in an
application such as virus check or firewall. For example, the two up-link
ports are located in different VLANs and are connected to a virus check
station or firewall. The virus check station or firewall will check whether the
packet contains the virus pattern. If not containing the virus pattern, this
packet will be forwarded to the up-link port located in different VLANs.
¾ AddTag: A tag port always adds a tag to a forwarded packet with VID
selected by PVID.
¾ Don’t care: If the NIC of a PC doesn’t support 802.1Q VLAN tagging,
select this radio button to ignore the packets tagged.
¾ RemoveTag: An un-tagged port always removes a tag from a forwarded
packet.