Allied Telesis AT-S106 - Manual (Page 47)

AT-S106 Management Software Web Browser User’s Guide
47
software. Also, you can change the VLAN memberships 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-GS950/48 Gigabit Ethernet Smart 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 the 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.
There are two components of a port-based VLAN in the AT-S106
Management software:
ˆ VLAN name
ˆ Group ID
VLAN Name
To create a port-based VLAN, you must give it a name. This name can
reflect the function of the network devices that are VLAN members, such
as Sales, Production, and Engineering.
Index
You must assign each VLAN in a network unique number. This number is
called the Port-Based VLAN Index. This number uniquely identifies a
VLAN in the switch.