ZyXEL Communications Corporation AMG1302 Manuel D’Utilisation

AMG1302-T10A User’s Guide

This chapter describes how to assign ports into Virtual Local Area Networks (VLAN) and configure 

frame tagging settings.

A VLAN allows a physical network to be partitioned into multiple logical networks. A VLAN group can 

be treated as an individual device. Each group can have its own rules about where and how to 

forward traffic. You can assign any ports on the Device to a VLAN group and configure the settings 

for the group.

802.1Q 

• Use  the pvid Setting screen (

) to configure the PVID and tagging 

settings. 

Tagged VLAN uses an explicit tag (VLAN ID) in the MAC header to identify the VLAN membership of 

a frame across bridges - they are not confined to the device on which they were created. The VLAN 

ID associates a frame with a specific VLAN and provides the information that devices need to 

process the frame across the network.

Each port on the device is capable of passing tagged or untagged frames. To forward a frame from 

an 802.1Q VLAN-aware device to an 802.1Q VLAN-unaware device, the Device first decides where 

to forward the frame and then strips off the VLAN tag. To forward a frame from an 802.1Q VLAN-

unaware device to an 802.1Q VLAN-aware switch, the Device first decides where to forward the 

frame, and then inserts a VLAN tag reflecting the ingress port's default VID. The default PVID is 

VLAN 1 for all ports, but this can be changed.

Whether to tag an outgoing frame depends on the setting of the egress port on a per-VLAN, per-

port basis (recall that a port can belong to multiple VLANs). If the tagging on the egress port is 

Ports

VLAN Groups

802.1Q