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Chapter 1

2 Avaya VLAN Manager User Guide

VLANs Overview

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.

Master VLAN List

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 Network Manager. 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.

VLAN Tags

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.

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Avaya VLAN Manager Guía de usuario Pagina 8