Folks,
Do we need to explore this particular rabbit hole before progressing the draft?
Please recall the following:
- Nobody has proposed deprecation of fragmentation functionality. In fact, we
took that off the table on Page 1.
- Without passing any judgement, we said that some applications fragment not so
much to overcome MTU issues, but to improve performance. We also offered a
*modern* example (Licklider Transport Protocol).
I am wondering why were are expending so many calories arguing about whether
additional examples are required. We only need one example to make the point.
We don't need twelve.
Ron
> -----Original Message-----
> From: Joe Touch <[email protected]>
> Sent: Friday, November 30, 2018 10:50 AM
> To: Christian Huitema <[email protected]>
> Cc: Templin (US), Fred L <[email protected]>; Ron Bonica
> <[email protected]>; int-area <[email protected]>
> Subject: Re: [Int-area] draft-ietf-intarea-frag-fragile-03
>
>
> If what you say were true, then we should all run everything over UDP and
> skip TCP. There are two reasons to the contrary:
>
> 1) the lower down the fragmentation occurs, the less overhead is needed (i.e.,
> when performance is an issue, it’s even more important to fragment as low as
> possible)
> 2) it’s useful to not repeat effort and learning curves in each app
>
> Add that to the fact that ti’s possible to improve lower layers without
> revising
> every app (i.e., shared benefit from updates).
>
> Joe
>
> > On Nov 30, 2018, at 7:40 AM, Christian Huitema <[email protected]>
> wrote:
> >
> >
> >
> >> On Nov 30, 2018, at 7:25 AM, Templin (US), Fred L
> <[email protected]> wrote:
> >>
> >> Right, we have talked about that. A disadvantage is that the
> >> application framing headers need to be repeated in each UDP datagram,
> >> and when the application headers are large the amount of room left
> >> for actual data is diminished.
> >
> > Seems like a weak argument. If the application is important and if
> performance is an issue, the application should be updated.
> >
> > -- Christian Huitema
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