Re: [EXTERNAL] Re: Transmission of IPv6 Jumbograms as Atomic Fragments

[David Farmer <[e-mail]>]

While I see no reason to depreciate RFC2675, without evidence of actual
active use of jumbograms or at least an intent to use them, but for the
issue you describe prevents it, I see no reason to advance the update you
propose.

Even in the R&E networking community where we make regular use of data
grams larger than 1500 bytes, I’m not aware of the use of, or even a desire
to use, jumbograms.

Thanks

On Wed, Nov 17, 2021 at 16:45 Templin (US), Fred L <
[e-mail]> wrote:

> Brian, I came through the supercomputer lab at NASA Ames in Mt View CA in
> 1996/7
> where HiPPI was heavily used. I didn't spend much time there, but enough
> to get a
> rough read that large packets are plausible.
>
> At some time not long after that, I had the good fortune to meet Dave
> Borman and
> asked him about RFC2675 with a "YMBK" pre-disposition toward the concept.
> Dave
> assured me that the document was serious, and I do not see evidence that
> it has
> been deprecated.
>
> So, do I know of any such mega-links? Not offhand, but AFAICT RFC2675 is
> still part
> of the IPv6 architecture and needs to be honored as such.
>
> Thanks - Fred
>
> > -----Original Message-----
> > From: Brian E Carpenter [mailto:[e-mail]]
> > Sent: Wednesday, November 17, 2021 1:39 PM
> > To: Templin (US), Fred L <[e-mail]>; 6man <
> [e-mail]>
> > Subject: [EXTERNAL] Re: Transmission of IPv6 Jumbograms as Atomic
> Fragments
> >
> > EXT email: be mindful of links/attachments.
> >
> >
> >
> > Fred,
> >
> > Is there any evidence of usage of jumbograms? To my knowledge, even the
> high energy phsyics community, one of the main proponents of
> > jumbograms back in the days when HIPPI seemed important, doesn't use
> them, despite extensive use of IPv6 for bulk data.
> >
> > Regards
> >     Brian
> >
> > On 18-Nov-21 06:54, Templin (US), Fred L wrote:
> > > Here is a new draft that may be of interest. It is a quick read
> (~2pgs) and proposes to
> > > update RFC2675 by permitting transmission of IPv6 jumbograms as atomic
> fragments.
> > >
> > > Please post comments to the list.
> > >
> > > Fred
> > >
> > > -----Original Message-----
> > > From: I-D-Announce [mailto:[e-mail]] On Behalf
> Of [e-mail]
> > > Sent: Wednesday, November 17, 2021 9:09 AM
> > > To: [e-mail]
> > > Subject: I-D Action: draft-templin-6man-jumbofrag-00.txt
> > >
> > >
> > > A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> > >
> > >
> > >          Title           : Transmission of IPv6 Jumbograms as Atomic
> Fragments
> > >          Author          : Fred L. Templin
> > >     Filename        : draft-templin-6man-jumbofrag-00.txt
> > >     Pages           : 4
> > >     Date            : 2021-11-17
> > >
> > > Abstract:
> > >     Internet Protocol, Version 6 (IPv6) provides a service for
> > >     transmission of IPv6 packets larger than 65,535 octets known as
> > >     "jumbograms".  Such large packets are not eligible for
> fragmentation,
> > >     and the current specification forbids the inclusion of a fragment
> > >     header of any kind.  However, some implementations may wish to
> > >     include an Identification value with each jumbogram; hence this
> > >     document proposes the transmission of IPv6 jumbograms as "atomic
> > >     fragments".
> > >
> > >
> > > The IETF datatracker status page for this draft is:
> > > https://datatracker.ietf.org/doc/draft-templin-6man-jumbofrag/
> > >
> > > There is also an htmlized version available at:
> > > https://datatracker.ietf.org/doc/html/draft-templin-6man-jumbofrag-00
> > >
> > >
> > > Internet-Drafts are also available by anonymous FTP at:
> > > ftp://ftp.ietf.org/internet-drafts/
> > >
> > >
> > > _______________________________________________
> > > I-D-Announce mailing list
> > > [e-mail]
> > > https://www.ietf.org/mailman/listinfo/i-d-announce
> > > Internet-Draft directories: http://www.ietf.org/shadow.html
> > > or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
> > >
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