Hi Hugh, Dave et al,

I'm receiving just accounting forward from a customer for further
processing, and I've noticed the same problem; a lot of retransmissions
(connectivity with our customer is really good however); 

I've followed your advice and i've set explicitly DupInterval to 2 seconds
in our customer's NAS Client clause, and I can see in our logfile lots of
INFO  messages: 

Thu Jun 27 22:30:56 2002: INFO: Duplicate request id 28 received from
x.x.x.x(48766): ignored 

I understand from this the same thing  Dave pointed: Radiator just
ignore and  discard retransmission without further action, but the
retransmissions ocurred wasting BW in our case 

I saw the rfc's in Radiator /doc directory and it seems that radius
protocol cannot sent "rejects" backward to avoid wasting BW by lots of
UDP re-transmissions;
Radiator by itself, could have another feature to avoid this waste of
bandwidth or I'm missing completely the point? 

Best regards, 

Angel Bustos
[EMAIL PROTECTED] 

 


On Thu, 27 Jun 2002, Hugh Irvine wrote: 

>
> Hello Dave - 
>
> You normally configure the timeout and retransmit values in your NAS(s) so
> there will only ever be a small number of retransmissions. If your NAS >sends more 
>requests than you tell it to, it is an issue that must be >addressed by your 
>supplier. 
>
> BTW - the DupInterval configured in the Client clauses defines the number > of 
>seconds in the sliding window during which a retransmission is > >considered a 
>duplicate. 
>
> I suggest you read the RFC's for further information (included in the
> Radiator distribution in the "doc" directory). 
>
> regards 
>
 

>
> Hugh 
>
>
> On Thu, 27 Jun 2002 07:04, Dave Kitabjian wrote:
> > "Wed Jun 26 16:03:16 2002: INFO: Duplicate request id 87
> > received from 10.52.0.1(1026): ignored"
> >
> > This message was logged for an Accounting request that was clearly
> > retransmitted since it had a large Acct-Delay-Time value.
> >
> > But if Radiator keeps ignoring the request, the NAS will keep
> > retransmitting, and the circle of life will go on and on and on...
> >
> > Does the RFC say to ignore dups? Wouldn't it make more sense to Reject
> > them somehow? Or, if the original one was already processed
> > successfully, it could simply send back an Accept and then discard it as
> > a dup?> >
> > Dave
> >
> > ===
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