Capping issues with voucher system

Winfield, Alister Alister.Winfield at
Fri Feb 13 10:59:27 CET 2015

That depends on the network device managing the sessionŠ

Simplest case (at least its easy to implement)

The NAS has Œquotas¹ and sends a new authentication request if the quota
hits Œ0¹. In RADIUS hand out small quotas (size depends on ability to cope
with the request rate and how much over you are willing to allow a user to
go). Update real quota levels as things go along. I¹ll admin getting that
last step actually right is not as trivial as it sounds but is usually

Less simple.

Track usage using accounting data (including Interim Accounting updates).
If the usage drops to / below zero use RADIUS COA to stop all related
sessions. How you know which to stop and what information you need to
build the COA packets is implementation dependant.

On 13/02/2015 08:33, "Daren Hendricks" <daren.hendricks at> wrote:

>I figured out the issue. All users not being capped were using multiple
>devices. So 2nd device was still connected and doing traffic. How on the
>radius side can we make all connections disconnect when user has reached
>their cap?
>On Fri, Feb 13, 2015 at 9:39 AM, Daren Hendricks
><daren.hendricks at>
>> Hi,
>> We experiencing a strange situation. We have a voucher system using
>> freeradius  and some customers are being capped when they reach their
>> voucher limit. Some customers though seem to continue to use about
>> 100-300MB over before they eventually get capped.
>> Has anybody experienced anything like this before? Any pointers on where
>> the possible issues might be or where to look to start diagnosing?
>> Thanks,
>> Daren
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