D-Link DES-3250TG User Manual page 117

The 802.1Q Port Settings window, shown below, allows you to
determine whether the switch will share its VLAN configuration
information with other GVRP (GARP VLAN Registration
Protocol)-enabled switches. In addition, Ingress can be used to
limit traffic by filtering incoming packets whose PVID does not
match the PVID of the port.
DES-3250TG Layer 2 Fast Ethernet Switch User's Guide
the VLAN and that the port is
forbidden from becoming a member
of the VLAN dynamically.
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