Avaya P580 User Manual page 221

Table 8-2. Relationship Between Switch Parameters
VLAN Binding Trunk
Mode
Bind to All 802.1Q
Multi-layer
Bind to Received Clear
Document No. 650-100-700, Issue 1
Description
Ingress: Untagged frames are classified to the VLAN associated with
the port on which the frame is received. Tagged frames are classified to
the VLAN identified by the VLAN tag in the frame's tag header.
Note:
For 802.1q mode: if a tagged frame is received, but the VLAN
for that tagged frame does not exist on the switch, that frame
will be placed onto the port VLAN assigned to the port. This
may cause unicast and broadcast VLAN traffic from other
VLANs to be seen on the port VLAN. To avoid this behavior,
you can set the port VLAN into the "discard" VLAN which
will drop all untagged frames and tagged frames with unknown
VLAN IDs. For Multi-layer: if a tagged frame is received, but
the VLAN for that tagged frame does not exists on the switch,
that frame will be dropped. Forwarding: All broadcast
frames from all VLANs will be forwarded to the port.
Egress: All frames transmitted out of the port to be tagged using the
IEEE 802.1Q/Multi-Layer tag header format. The tagged used will be
that of the VLAN in which the frame was received.
NOT RECOMMENDED
Ingress: Untagged frames are classified to the VLAN associated with
the port on which the frame is received. Tagged frames are classified to
the VLAN identified by the VLAN tag in the tag header of the frame.
Forwarding: All broadcast frames from all VLANs learned on the port
will be forwarded.
Egress: All frames transmitted will be sent with no tagging.
Configuring Ports
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