Avaya P330 User Manual page 106

The building blocks of VLANs are switch ports. To build a new VLAN you
need to define a VLAN name and number. You can then add switch ports
to the VLAN by configuring the PVID of the port to the VLAN number.
The ports are members of the VLAN whose number is their PVID. In
addition, you can configure the VLAN tagging mode and binding style of
the switch ports. VLAN #1 is the default VLAN and is named Default.
For more information about VLANs, refer to VLANs in The Reference Guide
The master VLAN list is a file on the network management station that
contains a list of globally defined VLANs and their names. This list is only
available when running Avaya MultiService Network Manager. It is not
available when running an Embedded Web Manager. To manage the
master VLAN list, use Avaya VLAN Manager. For information on Avaya
VLAN Manager, refer to the Avaya MultiService VLAN Manager User Guide.
VLANs that are listed in the master VLAN list are called globally known
VLANs. VLANs that are not in the master VLAN list but are configured
on a device are called locally known VLANs.
Packets can be tagged with VLAN information. When a tagged packet
enters a switch port, it maintains its tag. When an untagged packet
enters a switch port, the packet is tagged with the port's PVID (Port
VLAN ID).
When a packet arrives at the egress port, the VLAN Binding Style is
checked. If the packet's VLAN tag does not match a VLAN to which the
egress port is bound, the packet is discarded. If the tag matches a VLAN
to which the egress port is bound, the Tagging Mode is used. If the
Tagging Mode is Clear, the packet is forwarded with no VLAN tag. If the
Tagging Mode is anything else, the packet is forwarded with its VLAN tag.
96 Avaya P330 Manager User Guide