How to update dynamic simple queues parameters ?

Hi,
today I’ve hundreds of routers running ROS in Wireless AP Mode with DHCP and RADIUS using Rate-Limit attribute to create simple queues automagically. So there’s today my problem :

  • I’ve thousands of leases and dynamic queues attributed to users on hundreds of routers.
  • I’m going to change most of the rate values stored in SQL databases used as RADIUS backend.
  • I want all these leases to be updated via RADIUS requests.

What is the best way to perform such an update ?
Radius requests are not executed on lease expirations because radius answers or dhcp and queues parameters are stored somewhere in memory; how can I force Radius resquests to be re-executed without manually deleting leases and rebooting all the stations (that’s what I’m doing as usual for few rare cases) ?
How can I force DHCP RADIUS requests to be made on lease renewal requests ? … or to perform a massive refresh on queues via CLI or script ?

Regards,
MFX