PMK Cache Period: WPA2 provides fast roaming for authenticated clients by retaining keys
and other security information in a cache, so that if a client roams away from an access point
and then returns reauthentication is not required. This parameter sets the time for deleting
the cached WPA2 Pair wise Master Key (PMK) security information. (Default: 10 minutes)
Pre-Authentication: When using WPA2, pre-authentication can be enabled that allows
clients to roam to another access point and be quickly associated without performing full
802.1X authentication. (Default: Disabled)
WPS
Select Wireless > Advance, the wireless advance settings parameters are shown in the
following figure: