Planet Technology G.SHDSL.bis Bridge Router GRT-504 - Manual (Page 56)

GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual
6.2.4 VLAN
Click VLAN to configure VLAN.
VLAN (Virtual Local Area Network) allows a physical network to be partitioned into multiple logical
networks. Devices on a logical network belong to one group. A device can belong to more than
one group. With VLAN, a device cannot directly talk to or hear from devices that are not in the
same group.
With MTU (Multi-Tenant Unit) applications, VLAN is vital in providing isolation and security among
the subscribers. When properly configured, VLAN prevents one subscriber from accessing the
network resources of another on the same LAN.
VLAN also increases network performance by limiting broadcasts to a smaller and more
manageable logical broadcast domain. In traditional switched environments, all broadcast packets
go to each every individual port. With VLAN, all broadcasts are confined to a specific broadcast
domain.
The IEEE 802.1Q defines the operation of VLAN bridges that permit the definition, operation, and
administration of VLAN topologies within a bridged LAN infrastructure.
The router supports two types of VLAN: 802.1Q Tag-Based VLAN and Port-Based VLAN.
User can configure one of them to the router.
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