RE: [Pana] PANA-Error-Request

["Alper Yegin" <alper.yegin at yegin.org>]

I see.

Than my second thought was, why not carry the whole PANA header? Why is the
bits carried is limited to what you stated?

Alper

> -----Original Message-----
> From: Yoshihiro Ohba [mailto:yohba at tari.toshiba.com]
> Sent: Friday, October 27, 2006 5:03 PM
> To: Alper Yegin
> Cc: 'Yoshihiro Ohba'; pana at ietf.org
> Subject: Re: [Pana] PANA-Error-Request
> 
> Alper,
> 
> Since sequence numbers used for requests generated by PaC and
> generated by PAA are independent, it is possible that the sequence
> numbers contained in two consecutive messages sent by the same entity
> can be the same.
> 
> For example, if the PaC sends a PAN (without EAP-Payload) in response
> to a PAR generated by the PAA and then sends a PAR (with EAP-Payload),
> then the PAN contains the sequence number assigned by the PAA and
> contained in a PAA-generated PAR while the PaC-generated PAR contains
> the sequence number assigned by the PaC, the two sequence numbers can
> happen to be the same (perhaps with a very low probability).  As a
> result, when a PER for one of those messages are generated by the PAA,
> the PaC will not able to determine which message caused an error.
> 
> So I think Sequence Number is not sufficient to determine the message
> that caused the error.
> 
> Yoshihiro Ohba
> 
> 
> On Fri, Oct 27, 2006 at 01:44:05PM +0300, Alper Yegin wrote:
> > >    The Algorithm AVP (AVP Code X) is of type Unsigned64 containing
> > >    Flags, Message Type and Sequence Number fields of the header of the
> > >    message that caused the error.  The AVP Data field is encoded as
> > >    follows:
> > >
> > >     0                   1                   2                   3
> > >     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
> > >    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> > >    |            Flags              |         Message Type          |
> > >    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> > >    |                      Sequence Number                          |
> > >    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> > > "
> >
> > Actually, why not simply carry the sequence number only. This is
> sufficient
> > to identify a unique message within a PANA session.
> >
> > Alper
> >
> >
> >
> >
> > >
> > > Yoshihiro Ohba
> > >
> > > _______________________________________________
> > > Pana mailing list
> > > Pana at ietf.org
> > > https://www1.ietf.org/mailman/listinfo/pana
> >
> >


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