There seems to be timers like this. Thanks, I'm taking a look and testing to see if this helps.
#authentication timer ?
inactivity Interval in seconds after which if there is no activity from the client then it will be unauthorized (default OFF)
reauthenticate Time in seconds after which an automatic re-authentication should be initiated (default 1 hour)
restart Interval in seconds after which an attempt should be made to authenticate an unauthorized port (default 60 sec)
unauthorized Time in seconds after which an unauthorized session will get deleted