Owner's Manual

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802.1Q
Each VLAN in a network has an associated VLAN ID, which appears in the IEEE 802.1Q tag in the
Layer 2 header of packets transmitted on a VLAN. The IEEE 802.1Q specification establishes a
standard method for tagging Ethernet frames with VLAN membership information. The key for
IEEE 802.1Q to perform its functions is in its tags. 802.1Q-compliant Switch ports can be
configured to transmit tagged or untagged frames. A tag field containing VLAN information can
be inserted into an Ethernet frame. When using 802.1Q VLAN configuration, you configure ports
to be a part of a VLAN group. When a port receives data tagged for a VLAN group, the data is
discarded unless the port is a member of the VLAN group.
VID Displays the VLAN ID for which the network policy is defined. The range
of the VLAN ID is from 1 to 4094.
Name Enter the VLAN name. You can use up to 32 alphanumeric characters.
Tagged Port Frames transmitted from this port are tagged with the VLAN ID.
Untagged Port Frames transmitted from this port are untagged.
Note: The Switch's default setting is to assign all ports to a single 802.1Q VLAN(VID 1).
Please keep this in mind when configuring the VLAN settings for the Switch.
PVID
When an untagged packet enters a Switch port, the PVID (Port VLAN ID) will be attached to the
untagged packet and forward frames to a VLAN specified VID part of the PVID. A packet received
on a given port would be assigned that port's PVID and then be forwarded to the port that
corresponded to the packet's destination address. If the PVID of the port that received the packet
is different from the PVID of the port that is to transmit the packet, the Switch will drop the
packet. Within the Switch, different PVIDs mean different VLANs, so VLAN identification based
upon the PVIDs cannot create VLANs that extend outside a given Switch. If no VLANs are defined
on the Switch, all ports are then assigned to a default VLAN with a PVID equal to 1.