Administrative Convenience; Reduced Hardware; Figure 18: Multiple And Overlapping Vlans - RuggedCom RuggedSwitch RS1600 User Manual

RuggedSwitch™ User Guide
VLAN 5

Figure 18: Multiple and Overlapping VLANs

Administrative Convenience

VLANs enable equipment moves to be handled by software reconfiguration
instead the alternative, cable management. When a host's physical location is
changed, its connection point is often changed as well. With VLANs, the host's
VLAN membership and priority are simply copied to the new port.

Reduced Hardware

Without VLANs, traffic domain isolation requires using separate bridges for
separate networks. VLANs eliminate the need for separate bridges.
The number of networks hosts may often be reduced. Often a server is assigned
to provide services for independent networks. These hosts may be replaced by a
single multihomed host supporting each network on a its own VLAN. This host
can perform routing between VLANs.
Switch 1
VLAN 2
Switch 2
VLAN 4
VLAN 3
Switch 3
RuggedCom