VLAN Overview

This topic introduces what is VLAN and the advantages of VLAN.

What is VLAN?

VLAN allows you to segment out a physical network into virtual networks with different subnets. For example, one network is used by one department and another network is used by another department.

Advantages

VLANs provide the following advantages:

• Increase performance: VLANs enable logical grouping of users that are physically dispersed on a network. Additionally, VLANs create broadcast domains which eliminate the need for expensive routers, reduces traffic and decrease overall network latency.
• Improve manageability: VLANs make large networks more manageable by allowing centralized configuration of devices located in assorted locations.
• Enhance security: The separation of traffic on a network prevents unauthorized users from listening to or receiving sensitive data, and this will reduce risks and protect sensitive data.