SMC Networks ElliteConnect 2.4GHz/5GHz - Manual (Page 230)

Command Line Interface
7-60
mac-authentication session-timeout
This command sets the interval at which associated clients will be
re-authenticated with the RADIUS server authentication
database. Use the no form to disable reauthentication.
Syntax
mac-authentication session-timeout <seconds>
seconds - Re-authentication interval. (Range: 0-65535)
Default
0 (disabled)
Command Mode
Global Configuration
Example
show authentication
This command shows all 802.1x authentication settings, as well
as the address filter table.
Command Mode
Exec
AP(config)#mac-authentication session-timeout 1
AP(config)#