Advantages of VLANs (2024)

VLANs provide a number of advantages including ease of administration, confinement of broadcast domains, reduced network traffic, and enforcement of security policies.

Ease of administration
VLANs enable logical grouping of end-stations that arephysically dispersed on a network. When users on a VLAN move to anew physical location but continue to perform the same jobfunction, the end-stations of those users do not need to bereconfigured. Similarly, if users change their job function, theyneed not physically move: changing the VLAN membership of theend-stations to that of the new team makes the users' end-stationslocal to the resources of the new team.

Confinement of broadcast domains
VLANs reduce the need to have routers deployed on a network tocontain broadcast traffic. Flooding of a packet is limited to theswitch ports that belong to a VLAN.
See Also
What is VLAN? Types, Advantages, Example

Reduction in network traffic
Confinement of broadcast domains on a network significantlyreduces traffic.

Enforcement of security policies
By confining the broadcast domains, end-stations on a VLAN are prevented from listening to or receiving broadcasts not intendedfor them. Moreover, if a router is not connected between the VLANs,the end-stations of a VLAN cannot communicate with the end-stationsof the other VLANs.