routeros sending radius auth request after login

RouterOS Virtualization
1

I’ve got two mikrotik devices, one is a CHR (long-term v6.47.10) and the other is a RB750G r3(long-term v6.47.10). I’m using radius auth to login to the system.

Recently, I found that the radius request count on the CHR is somehow abnormal(too much!), after enabling radius debug log, I found that the system is sending auth request to the radius server every few seconds after the login, however, this is not happening on the RB750G r3.

2

Check if the user still have the right to be logged in.
If someone disable the user on radius, must can not wait next login, drop fastly the connection.