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Re: [nwcrg] Spencer Dawkins' Yes on draft-irtf-nwcrg-network-coding-satellites-13: (with COMMENT)

"lloyd.wood@yahoo.co.uk" <lloyd.wood@yahoo.co.uk> Mon, 25 May 2020 00:04 UTC

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Date: Mon, 25 May 2020 00:04:44 +0000
From: "lloyd.wood@yahoo.co.uk" <lloyd.wood@yahoo.co.uk>
To: "lloyd.wood@yahoo.co.uk" <lloyd.wood=40yahoo.co.uk@dmarc.ietf.org>, Carsten Bormann <cabo@tzi.org>
Cc: nwcrg@irtf.org, Spencer Dawkins <spencerdawkins.ietf@gmail.com>, "Stuart W. Card" <stu.card@critical.com>
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Subject: Re: [nwcrg] Spencer Dawkins' Yes on draft-irtf-nwcrg-network-coding-satellites-13: (with COMMENT)
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Carsten,


it strikes me that justifying work on LOOPS to benefit old
satellite terminals that lack adaptive coding and modulation
is akin to justifying work on PEPs because there are still
some Windows XP boxes out there with ancient TCP stacks
that will benefit most from TCP acceleration.


In both cases, the network is doing work to benefit the
endpoints -- yet the design of the Internet is that innovation
is supposed to happen most rapidly at the endpoints.


Focusing the IETF/IRTF on work to benefit legacy endpoints
does not seem that productive to me.


best


L.



Lloyd Wood lloyd.wood@yahoo.co.uk http://about.me/lloydwood






On Sunday, 24 May 2020, 08:37:49 GMT+10, Carsten Bormann <cabo@tzi.org> wrote: 






> On 2020-05-24, at 00:14, lloyd.wood@yahoo.co.uk <lloyd.wood=40yahoo.co.uk@dmarc.ietf.org> wrote:
> 
> I doubt that
> network coding across a path including a satellite link can beat the
> coding and modulation that can be dynamically applied to the satellite
> link.

Very likely so.  But the keyword is “can be applied”.  Is it?
When is the clunky sat terminal written off and up for renewal?

This is the (not so unlikely) situation where LOOPS-style in-network recovery can be useful even for satellite losses.

Grüße, Carsten

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