Trying to solve a Simultaneous-Use problem

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On Tue, Oct 11, 2011 at 3:44 AM, Nataniel Klug <listas.nata at cnett.com.br>wrote:

>                 Hello all,****
>
> ** **
>
>                 I am trying to solve a problem about Simultaneous-Use, not
> in the code because it’s working, but inside my network layout. I have two
> different NAS the can authenticate the same client for PPPoE, something like
> this:****
>
> ** **
>
> ** **
>
> [ internet ] ---+ NAS01 +--- [ client ]****
>
>                       ----| NAS02 |----****
>
> ** **
>
>                 So the client can be connected to any of those 2 NAS for
> different reasons and when I have a problem, like a power surge, in one of
> the NAS I got the connection stopped because the NAS that turned down is not
> sending any accounting packets to the radius. It’s ok when I use only one
> NAS but I am using 2 for backup in cases like a power surge or a hard
> shutdown of the machine. If the simultaneous-use work so the client cannot
> connect to NAS02 (assuming that NAS01 has been turned down) until NAS01 is
> powered on and send account-stop to the radius.****
>
> ** **
>
>                 So, my question is: how can I use Simultaneous-Use in this
> scenario? Should I make a script that test if the NAS is online every 10
> seconds and if not list all clients connect and stop that connections?
> Should this work? Is there anyone with the same scenario that can share the
> solution for the problem?****
>
> ** **
>
> --
>

You mean use simultaneous-use = 1? You can use unlang. Assume NAS01 is now
dead. There's a stalled session in db. When user try to login using NAS02,
check for his username and fill the session to eliminate it.
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