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Re: [Stackevo-discuss] New Version Notification for draft-welzl-irtf-iccrg-tcp-in-udp-00.txt

Michael Welzl <michawe@ifi.uio.no> Fri, 25 March 2016 08:12 UTC

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From: Michael Welzl <michawe@ifi.uio.no>
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To: Joe Touch <touch@isi.edu>
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Subject: Re: [Stackevo-discuss] New Version Notification for draft-welzl-irtf-iccrg-tcp-in-udp-00.txt
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> On 24. mar. 2016, at 18.46, Joe Touch <touch@isi.edu> wrote:
> 
> 
> 
> On 3/24/2016 1:20 AM, Michael Welzl wrote:
>> 
>>> On 24. mar. 2016, at 00.52, Joe Touch <touch@isi.edu> wrote:
> ...
>>> Having one uniform layer at which multiplexing occurs makes things easy.
>>> Having two means you have to wonder what the other is doing all the time
>>> and whether the two correlate.
>> 
>> Is this a real practical problem related to this draft?
> 
> It is a real practical problem anytime you tunnel.

Even when the method avoids that packets grow in size? I’m surprised but I’m not going to debate this further: you provided a useful pointer (the tunnels draft in INTAREA), I’ll have to take a look and try to understand the problem. Anyway I agree that a solution like the v6 flow labe that Tom Herbert suggested is nicer; I have nothing at all against that and now plan to incorporate it in the next version of the draft, for the v6 case.

As for the congestion control related bits of your email, I made a mistake: I started this off saying “let’s discuss this in ICCRG”, but then I follow up a discussion here on stackevo. This is purely about congestion control, so it really belongs there. My next email in this matter will go to you, cc iccrg.

Cheers,
Michael

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