Allied Telesis AT-S111 User Manual
AT-GS950/48PS Switch Web Interface User’s Guide
151
With VLANS, you can reconfigure the LAN segment assignment of an
end node connected to the AT-GS950/48PS switch’s management
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.
end node connected to the AT-GS950/48PS switch’s management
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.
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-GS950/48PS Gigabit Ethernet Smart Switch supports the
following types of VLANs:
following types of VLANs:
Port-based VLANs
Tagged VLANs
Both types of VLANs are described in the following sections.
Port-based
VLAN Overview
As explained in the “VLAN Overview” on page 150, a VLAN consists of a
group of ports on an Ethernet switch that form an independent traffic
domain. This type of VLAN is independent of the header information
including VLAN tags in a frame. 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.
group of ports on an Ethernet switch that form an independent traffic
domain. This type of VLAN is independent of the header information
including VLAN tags in a frame. 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.
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-S111 Management software:
AT-S111 Management software:
VLAN Name
VLAN Index
VLAN Name
To create a port-based VLAN, you must give it a unique name. This name
can reflect the function of the network devices that are VLAN members,
such as Sales, Production, and Engineering.
can reflect the function of the network devices that are VLAN members,
such as Sales, Production, and Engineering.
VLAN Index
You must assign a unique number to each VLAN in a network. This
number is called the Port-Based VLAN Index. This number uniquely
identifies a VLAN in the AT-GS950/48PS switch and across the network.
number is called the Port-Based VLAN Index. This number uniquely
identifies a VLAN in the AT-GS950/48PS switch and across the network.