[cisco-nas] radius accounting - problem with prepaid users

[Dennis Peng]

You can try enabling periodic accounting on a per-user basis:

	Cisco-AVPair = "lcp:acct-interval=<n>"

or

	Acct-Interim-Interval = <n>

The latter attribute is defined in RFC2869.

You could also clear all users off a NAS before you reload or power it
off. If you configure system accounting, the NAS will also send an
Accounting-Off record to the RADIUS server when you reload the
box. This indicates to the server that all open accounting sessions on
that NAS should be closed. An Accounting-On record is also sent when
the NAS boots up so that the RADIUS server can close all open sessions
on the NAS if the Accounting-Off was never sent (like if the NAS was
powered off or crashed).

Dennis

Anastassios Chatzithomaoglou [achatz at forthnet.gr] wrote:
> We have some users who use prepaid cards in order to connect to our access 
> servers.
> 
> This means that when they connect, a start record is stored in our database 
> and when they disconnect, a stop record is stored. The time between these 2 
> records is subtructed from the card's total time, so the next time the user 
> connects, the card starts with less time.
> 
> The problem is when the access server is powered off, so there is no stop 
> record sent.
> 
> One solution would be to send accounting updates every x mins, but we don't 
> want that for all our dialup users. Is there a way we can configure it 
> per-user (through aaa)?
> 
> Any other idea on how we can solve such a problem?
> 
> 
> -- 
> ***********************************
>    Chatzithomaoglou Anastasios
> Network Design & Operations Center
>           FORTHnet S.A.
>       <achatz at forthnet.gr>
> ***********************************
> 
> 
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