Handling limt credit with Radius

[Carlos Lerma]

I understand that the Radius can handle the credit limit. Actually I'm using a particular attribute ("Session-Timeout") in order to tell to NAS the reamin time of the session. My issue is when the customer has 20 minutes left when he started the session, so the radius send in the attribute the value of 20 minutes, in order that, the NAS just allow this time of connection. The issue appear when the customer knows that has 20 minutes left and wants to increase his credit, in this case I don't know how to tell to the NAS that do not cut off the session, due to the customer have increased his limit. In this scenario I know that the Radius CAN NOT handle this situation, because the authentification was done.    I don't know if also using SNMP OR exists another way in order to handle this scenario.     Thanks,   Carlos.