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Arun,

you are correct. You are setting up one association and
will get (depending on the configuration) n streams in
one direction and m in the other. The numbers are
'negotiated' in the INIT and INIT-ACK chunks.

Best regards
Michael

Michael Tuexen Tel.: +49 89 722 47210
Siemens AG Fax: +49 89 722 48212
ICN CP SE C 7 e-mail:
Michael.Tuexen AT siemens.com

> -----Original Message-----
> From: Arunendu Roy
> [mailto:aroy AT research.telcordia.com]
> Sent: Tuesday, November 26, 2002 5:06 PM
> To: Tuexen Michael
> Cc:
> discussion AT sctp.de
> Subject: Re: [SCTP-Discussion] SCTP Multistreaming
>
>
> Michael,
>
> Thanks for your response. By session i meant association. So, as I
> understand, we don't need to create multiple associations
> between the sender
> and receiver to send multiple streams concurrently. Is that right ?
>
> Thanks
> -Arun
>
>
> Tuexen Michael wrote:
>
> > Arun,
> >
> > I do not know what you mean by 'session'.
> >
> > All (unidirectional) streams belong to on SCTP association
> > and each DATA chunk belongs to exacly one stream. They share
> > one sequence number space (TSN) but this is used only for reliable
> > transport. All chunks within one stream share another sequence
> > number space (SSN) which is used for in sequence delivery within
> > each stream. Thus using multiple streams avoids the head of line
> > blocking problem between DATA chunks of different streams.
> >
> > Best regards
> > Michael
> >
> > Michael Tuexen Tel.: +49 89 722 47210
> > Siemens AG Fax: +49 89 722 48212
> > ICN WN CC SE 7 e-mail:
> > Michael.Tuexen AT siemens.com
> >
> > > -----Original Message-----
> > > From: Arunendu Roy
> > > [mailto:aroy AT research.telcordia.com]
> > > Sent: Tuesday, November 26, 2002 4:41 PM
> > > To:
> > > discussion AT sctp.de
> > > Subject: [SCTP-Discussion] SCTP Multistreaming
> > >
> > >
> > > Hi,
> > >
> > > I have some doubt regarding SCTP multi streaming which I
> would like to
> > > clarify. Any response will be greatly apreciated.
> > >
> > > Does multi streaming means multiple concurrent sessions
> between the
> > > sender and receiver each carrying a stream of data chunks or
> > > is it only
> > > one session that carries the data chunks sequentially
> (according to
> > > transmission sequence number) but the data chunks are marked
> > > with stream
> > > numbers ?
> > >
> > > Thanks
> > > -Arun
> > >
> > >
> > >
> > > _______________________________________________
> > > discussion mailing list
> > > discussion AT sctp.de
> > > http://www.sctp.de/mailman/listinfo/discussion
> > >
>

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• [SCTP-Discussion] SCTP Multistreaming, Arunendu Roy, 11/26/2002
  • <Possible follow-up(s)>
  • RE: [SCTP-Discussion] SCTP Multistreaming, Tuexen Michael, 11/26/2002
    • Re: [SCTP-Discussion] SCTP Multistreaming, Arunendu Roy, 11/26/2002
  • RE: [SCTP-Discussion] SCTP Multistreaming, Tuexen Michael, 11/26/2002

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