What is the purpose of a Virtual Local Area Network (VLAN)?

The purpose of a Virtual Local Area Network (VLAN) is to separate groups of users virtually. VLANs are a way to segment network traffic without requiring physical separation of the network. This virtualization allows administrators to create distinct broadcast domains, improving network management and security. By grouping users logically based on function, project, or department, VLANs can effectively isolate traffic, which enhances security and reduces broadcast storms among users that do not need to communicate with each other.

This separation also leads to improved performance, as it limits the number of devices on the same broadcast domain, reducing unnecessary traffic within each segment. Additionally, VLANs enable greater flexibility in network configuration, making it easier to adapt to changing business needs. Overall, the ability to manage and isolate traffic efficiently is a fundamental characteristic of VLANs that underscores their essential role in modern networking.