Draytek VigorAP 903 User Manual page 65

Fast Roaming
(WPA2/802.1x)
After finishing this web page configuration, please click OK to save the settings.
With Adjacent AP RSSI over – Specify a value as a threshold.

Enable – Check the box to enable fast roaming configuration.
PMK Caching - Set the expire time of WPA2 PMK (Pairwise master key)
cache. PMK Cache manages the list from the BSSIDs in the associated SSID
with which it has pre-authenticated. Such feature is available for
WPA2/802.1 mode.
Pre-Authentication - Enables a station to authenticate to multiple APs
for roaming securer and faster. With the pre-authentication procedure
defined in IEEE 802.11i specification, the pre-four-way-handshake can
reduce handoff delay perceivable by a mobile node. It makes roaming
faster and more secure. (Only valid in WPA2)
Enable - Enable IEEE 802.1X Pre-Authentication.
Disable - Disable IEEE 802.1X Pre-Authentication.
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