The device grants a high priority to VIP users through service schemes to identify the VIP users.
When the number of access users reaches the maximum on a VAP or the user CAC threshold, a new user that attempts to access the network is authenticated first. After preferential access of VIP users is configured on the device and the authentication succeeds, the device checks whether the user is a VIP user. If so, the user accesses the network replacing an online non-VIP user. If not, this user cannot go offline.
In Portal authentication scenarios, priorities of users in pre-connection state cannot be determined. These users are regarded as high-priority users and will not be disconnected when VIP users access the WLAN.