C
HAPTER
4
| Configuring the Switch
IEEE 802.1Q VLANs
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If ingress filtering is enabled and a port receives frames tagged for
VLANs for which it is not a member, these frames will be discarded.
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If ingress filtering is disabled and a port receives frames tagged for
VLANs for which it is not a member, these frames will be flooded to
all other ports.
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Ingress filtering does not affect VLAN independent BPDU frames,
such as GVRP or STP. However, they do affect VLAN dependent
BPDU frames, such as GMRP.
◆ Queue in Queue - Determines whether the port accepts double tagged
frames. If the port doesn't accepts double tagged frames, double
tagged frames received on the port are discarded. (Default: Disabled)
◆ Frame Type - Sets the interface to accept all frame types, including
tagged or untagged frames, or only tagged frames. When set to receive
all frame types, any received frames that are untagged are assigned to
the default VLAN. When set to receive only tagged frames, all untagged
frames received on the interface are discarded. (Option: All, Tagged;
Default: All)
◆ Port VLAN Mode - Determines how to process VLAN tags for ingress
and egress traffic. (Options: Specific, None; Default: Specific)
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Specific - If the port is VLAN aware, untagged frames received on
the port are assigned to the default PVID, and tagged frames are
processed using the frame’s VLAN ID. If the port is not VLAN aware,
all frames received on the port are assigned to the default PVID.
Regardless of whether or not a port is VLAN aware, if the VLAN to
which the frame has been assigned is different from the default
PVID, a tag indicating the VLAN to which this frame was assigned
will be inserted in the egress frame. Otherwise, the frame is
transmitted without a VLAN tag.
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None - The ID for the VLAN to which this frame has been assigned
is inserted in frames transmitted from the port. The assigned VLAN
ID can be based on the ingress tag for tagged frames, or the default
PVID for untagged ingress frames. Note that this mode is normally
used for ports connected to VLAN-aware switches.
When forwarding a frame from this switch along a path that contains
any VLAN-aware devices, the switch should include VLAN tags. When
forwarding a frame from this switch along a path that does not contain
any VLAN-aware devices (including the destination host), the switch
should first strip off the VLAN tag before forwarding the frame.
◆ Port VLAN ID - VLAN ID assigned to untagged frames received on the
interface. (Range: 1-4095; Default: 1)
The port must be a member of the same VLAN as the Port VLAN ID.
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