A VLAN, short for Virtual Local Area Network, is a network technology that allows for the segmentation of a single physical network into multiple logical networks. In other words, VLANs enable the creation of isolated subnetworks within a larger network infrastructure.
VLANs are typically deployed in situations where there is a need to separate different types of network traffic, such as separating employee traffic from guest traffic in a corporate network, or separating voice and data traffic in a VoIP (Voice over Internet Protocol) network.
The division of a physical network into VLANs is achieved through the use of network switches that support VLAN functionality. By assigning specific ports or groups of ports on the switch to a particular VLAN, the traffic sent/received by devices connected to these ports is confined within that VLAN.
VLANs provide several benefits, such as improved network performance, increased security, and simplified network management. By segregating traffic into different VLANs, network congestion can be reduced and bandwidth can be better allocated. VLANs also offer enhanced security by isolating sensitive data from other devices on the network. Additionally, network management becomes easier as VLANs provide a way to logically organize devices and resources within a network.
In essence, VLANs allow for the creation of virtual subnetworks within a physical network, enabling efficient traffic segregation, improved security, and simplified network administration.
