VLAN stands for “Virtual Local Area Network,” or “Virtual LAN.” A VLAN is a custom network created from one or more existing LANs. It enables groups of devices from multiple networks (both wired and wireless) to be combined into a single logical network. The result is a virtual LAN that can be administered like a physical local area network.
In order to create a virtual LAN, the network equipment, such as routers and switches must support VLAN configuration.
Say a company has three divisions within a single building — finance, marketing, and development. Even if these groups are spread across several locations, VLANs can be configured for each one. For instance, each member of the finance team could be assigned to the “finance” network, which would not be accessible by the marketing or development teams. This type of configuration limits unnecessary access to confidential information and provides added security within a local area network.
By using VLANs, you can take ports on a single switch and associate them with a VLAN, which means you treat those ports as their own separate switch.
Requires additional networks (Sold Separately)