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It depends on what you call a small SACK chunk.
It is a value which works, it is neither exact
nor did we thought about it a long time.

Best regards
Michael

Michael Tuexen Tel.: +49 89 722 47210
Siemens AG Fax: +49 89 722 48212
ICN WN CS SE 5 E-mail:
Michael.Tuexen AT icn.siemens.de

> -----Original Message-----
> From: Brian F. G. Bidulock
> [SMTP:bidulock AT openss7.org]
> Sent: Friday, March 15, 2002 10:18 AM
> To: Michael Tuexen
> Cc:
> discussion AT sctp.de;
> Hideki Kishida
> Subject: Re: [SCTP-Discussion] fragment and reassemble
>
> Michael,
>
> On Fri, 15 Mar 2002, Michael Tuexen wrote:
>
> > Hideki,
> >
> > you are wrong. SCTP_MAXIMUM_DATA_LENGTH is a constant in
> > sctp.h which should not be changed by the user. It is the
> > maximum data chunk length which fits in an ethernet frame with
> > a common header and a small SACK chunk.
>
> Wouldn't that be somewhat larger than 1400?
>
> --brian
>
> >
> > You should never anything in scyp.h
> >
> > Segmentation and reassembly work out of the box. See programs/echo-tool.c
> > for an example. Just use large buffers in the sctp_send and provide
> > large buffers in the sctp_receive calls.
> >
> > Best regards
> > Michael
> >
> > On Friday, March 15, 2002, at 09:10 AM, Hideki Kishida wrote:
> >
> > > Dear all,
> > >
> > > Question to user-data fragmentation and reassmenble:
> > >
> > > #define SCTP_MAXIMUM_DATA_LENGTH 1400
> > > change to
> > > #define SCTP_MAXIMUM_DATA_LENGTH 8000
> > >
> > > In this case, as for sctplib can it send and receive the user-data
> > > of 8000 octets correctly?
> > >
> > >
> > > regards,
> > > Hideki (Japan)
> > >
> > > _______________________________________________
> > > discussion mailing list
> > > discussion AT sctp.de
> > > http://www.sctp.de/mailman/listinfo/discussion
> > >
> > >
> > Michael.Tuexen AT micmac.franken.de
> >
> > _______________________________________________
> > discussion mailing list
> > discussion AT sctp.de
> > http://www.sctp.de/mailman/listinfo/discussion
>
> --
> Brian F. G. Bidulock > ¦ The reasonable man adapts himself to the ¦
> bidulock AT openss7.org
> ¦ world; the unreasonable one persists in ¦
> http://www.openss7.org/ ¦ trying to adapt the world to himself. ¦
> ¦ Therefore all progress depends on the ¦
> ¦ unreasonable man. -- George Bernard Shaw ¦
> _______________________________________________
> discussion mailing list
> discussion AT sctp.de
> http://www.sctp.de/mailman/listinfo/discussion

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• [SCTP-Discussion] fragment and reassemble, Hideki Kishida, 03/15/2002
  • Re: [SCTP-Discussion] fragment and reassemble, Michael Tuexen, 03/15/2002
    • Re: [SCTP-Discussion] fragment and reassemble, Brian F. G. Bidulock, 03/15/2002
    • Re: [SCTP-Discussion] fragment and reassemble, Hideki Kishida, 03/15/2002
  • <Possible follow-up(s)>
  • RE: [SCTP-Discussion] fragment and reassemble, Tuexen Michael, 03/15/2002

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