Allied-telesis AT-S39 Manual de usuario Pagina 113

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Section II: Local and Telnet Management
113
Port-based VLAN Overview
As explained in the VLAN Overview section earlier in this chapter, a
VLAN consists of a group of ports on one or more Ethernet switches that
form an independent broadcast 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 a Fast Ethernet Switch that
form a logical Ethernet segment. Each port of a port-based VLAN can
belong to only one VLAN at a time.
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. A port-based VLAN also can span switches and consist of ports
from multiple Ethernet switches.
Note
The AT-8000 Series switch is pre-configured with one port-based
VLAN. All ports on the switch are members of this VLAN, called the
Default VLAN.
The parts that make up a port-based VLAN are:
VLAN name
VLAN Identifier
Untagged ports
Port VLAN Identifier
VLAN Name
To create a port-based VLAN, you must give it a name. The name should
reflect the function of the network devices that are be members of the
VLAN. Examples include Sales, Production, and Engineering.
VLAN Identifier
Each VLAN in a network must have a unique number assigned to it. This
number is called the VLAN identifier (VID). This number uniquely
identifies a VLAN in the switch and the network.
If a VLAN consists only of ports located on one physical switch in your
network, you would assign it a VID unique from all other VLANs in your
network.
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