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Backbone Connecting Multiple Switches
Switch A
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2
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Development
Department
VLAN 3
Marketing
Department
VLAN1
Figure 7-1 The concept of VLANs
Switch B
1
2
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4
5
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7
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Finance
Department
VLAN 3
VLANs and the Switch 2000 TR
VLANs and the Switch 2000 TR
The Switch 2000 TR supports VLANs which consist of
a set of switch ports. Each switch port can only
belong to one VLAN at a time, regardless of the
device to which it is attached.
Each Switch 2000 TR can support up to 16 VLANs.
However, you can have more than 16 VLANs in your
entire network by connecting the 16 switched VLANs
to other VLANs using a router.
The Default VLAN and Moving Ports From the
Default VLAN
On each Switch, VLAN 1 is the default. It has two
properties:
It contains all the ports on a new or initialized
Switch.
It is the only VLAN which allows an SNMP Network
Manager to access the management agent of the
unit.
By default, if a device is attached to a port in the
Default VLAN and you want to move the device into
another VLAN, you need to use the VLAN Setup
screen to place the port in that VLAN.
Connecting VLANs to a Router
If the devices in a VLAN need to talk to devices in a
different VLAN, each VLAN requires a connection to a
router. Communication between VLANs can only take
place if they are all connected to the router. A VLAN
not connected to a router is isolated.
7-3
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