Proroute GEM420 4G M2M Router
GEM420 User Manual
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3.1.2.2 VLAN
This section provides a brief description of VLANs and explains how to create and
modify virtual LANs which are more commonly known as VLANs. A VLAN is a logical
network under a certain switch or router device to group lots of client hosts with a
specific VLAN ID. This device supports both Port-based VLAN and Tag-based VLAN.
In Port-based VLAN, all client hosts belong to the same group by transferring data via
some physical ports that are tagged with same VLAN ID in the device. The ports of a
VLAN form an independent traffic domain in which the traffic generated by the nodes
remains within the VLAN. However, in Tag-based VLAN, all packets with same VLAN
ID will be treated as the same group of them and own same access property and QoS
property. It is especially useful when individuals of a VLAN group are located at
different location.
The VLAN function allows you to divide local network into different
“
virtual LANs”. In
some cases, ISP may need router to support “VLAN tag” for certain kinds of services
(e.g. IPTV) to work properly. In some cases, SMB departments are separated and
located at any floor of building. All client hosts in same department should own
common access property and QoS property. You can select either one operation
mode, port-based VLAN or tag-based VLAN, and then configure according to your
network configuration.
3.1.2.2.1 VLAN Scenarios
