|  | 1.2 | Virtual LANs
| 1.2.7 | Dynamic VLANs
Dynamic VLANs are ports on a switch that can automatically determine their VLAN assignments. Most switch manufacturers use intelligent management software. Dynamic VLAN functions are based on MAC addresses, logical addressing, or protocol type of the data packets. When a station is initially connected to an unassigned switch port, the appropriate switch checks the MAC address entry in the VLAN management database and dynamically configures the port with the corresponding VLAN configuration. The major benefits of this approach are less administration within the wiring closet when a user is added or moved, and centralized notification when an unrecognized user is added to the network. Typically, more administration is required up front to set up the database within the VLAN management software and to maintain an accurate database of all network users.