High-end access points can support more than one SSID (the name of the wireless network), allowing admins to match an SSID to a VLAN. This simplifies the task of placing users in a security profile or even in a specific network. Being able to define multiple SSIDs on an access point allows your IT staff to control how your Wi-Fi network is displayed to the public. For example, one AP can handle secure corporate traffic, while at the same time presenting a public-access SSID that allows only Internet access. By matching SSIDs to VLANs and network access, admins can maintain control over Wi-Fi traffic and users.
That kind of control is the key to a successful Wi-Fi deployment: a secure, high-performing environment, where you can regulate access and usage, while keeping users productive and happy.