Allied Telesis AT-S101 - Manual (Page 47)

AT-S101 Management Software User’s Guide
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can change the VLAN memberships through the management
software without moving the workstations physically or change group
memberships without moving cables from one port to another.
In addition, a virtual LAN can span more than one switch. This means
that the end nodes of a VLAN do not need to be connected to the
same switch and so are not restricted to being in the same physical
location.
The AT-GS950/8POE switch supports the following types of VLANs:
ˆ Port-based VLANs
ˆ Tagged VLANs
Both types of VLANs are described in the following sections.
Port-based
VLAN Overview
As explained in the “VLAN Overview” on page 46, a VLAN consists of a
group of ports on an Ethernet switch that form an independent traffic
domain. Traffic generated by the end nodes of a VLAN remains within the
VLAN and does not cross over to the end nodes of other VLANs unless
there is an interconnection device, such as a router or Layer 3 switch.
A port-based VLAN is a group of ports on an AT-GS950/8POE switch that
form a logical Ethernet segment. A port-based VLAN can have as many or
as few ports as needed. The VLAN can consist of all the ports on an
Ethernet switch, or just a few ports.
The parts of a port-based VLAN in the AT-S101 Management Software
are:
ˆ VLAN name
ˆ Group ID
VLAN Name
To create a port-based VLAN, you must give it a name that reflects the
function of the network devices that are VLAN members, such as Sales,
Production, and Engineering.
Group ID
Each VLAN in a network must have a unique number assigned to it. This
number is called the Group ID. This number uniquely identifies a VLAN in
the switch.