D-Link xStack DES-3800 Series User Manual page 97

The following fields can be set:
Parameter Description
From/To These two fields allow you to specify the range of ports that will be included in the Port-based
VLAN that you are creating using the 802.1Q Port Settings window.
GVRP The Group VLAN Registration Protocol (GVRP) enables the port to dynamically become a
member of a VLAN. GVRP is Disabled by default.
Ingress Check This field can be toggled using the space bar between Enabled and Disabled. Enabled enables
the port to compare the VID tag of an incoming packet with the PVID number assigned to the
port. If the two are different, the port filters (drops) the packet. Disabled disables ingress filtering.
Ingress Checking is Disabled by default.
PVID The read-only field in the 802.1Q Port Table shows the current PVID assignment for each port,
which may be manually assigned to a VLAN when created in the 802.1Q Port Settings table.
The Switch's default is to assign all ports to the default VLAN with a VID of 1. The PVID is used
by the port to tag outgoing, untagged packets, and to make filtering decisions about incoming
packets. If the port is specified to accept only tagged frames - as tagging, and an untagged
packet is forwarded to the port for transmission, the port will add an 802.1Q tag using the PVID
to write the VID in the tag. When the packet arrives at its destination, the receiving device will
use the PVID to make VLAN forwarding decisions. If the port receives a packet, and Ingress
filtering is enabled, the port will compare the VID of the incoming packet to its PVID. If the two
are unequal, the port will drop the packet. If the two are equal, the port will receive the packet.
Acceptable This field denotes the type of frame that will be accepted by the port. The user may choose
Frame Type between Tagged Only, which means only VLAN tagged frames will be accepted, and Admit_All,
which mean both tagged and untagged frames will be accepted. Admit_All is enabled by default.
Click Apply to implement changes made.
xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch
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