VIRTUAL LAN

virtual LAN

Also called a "VLAN," it is a logical subgroup within a local area network that is created via software rather than manually moving cables in the wiring closet. It combines user stations and network devices into a single unit regardless of the physical LAN segment they are attached to and allows traffic to flow more efficiently within populations of mutual interest.

VLANs are implemented in port switching hubs and LAN switches and generally offer proprietary solutions. VLANs reduce the time it takes to implement moves, adds and changes. (Sumber : https://www.pcmag.com/encyclopedia/term/53925/virtual-lan ). 

VLan With Packet Tracer