Re: [Softwires] [BEHAVE] packet reordering in MAP

Brian E Carpenter <brian.e.carpenter@gmail.com> Sun, 31 March 2013 14:51 UTC

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Date: Sun, 31 Mar 2013 15:51:28 +0100
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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To: Ted Lemon <Ted.Lemon@nominum.com>
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Cc: "softwires@ietf.org" <softwires@ietf.org>, "behave@ietf.org" <behave@ietf.org>
Subject: Re: [Softwires] [BEHAVE] packet reordering in MAP
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Ted

On 31/03/2013 14:30, Ted Lemon wrote:
> On Mar 31, 2013, at 8:45 AM, Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
>> For example, if a translator is almost out of memory, surely it is
>> better to send a packet out of order than to drop it?
> 
> Almost surely it is already too late to fix the brokenness that began when the translator allowed its buffer to get so full.   The internet is *supposed* to drop packets in the face of congestion!
> 
> (Sorry, I realize that's off-topic, but I couldn't let this pass unremarked.)

Yes, there is certainly an interesting question about the trade-offs between
reordering and drops under congestion, but as far as this spec goes, the point
is that both can happen anyway, so imposing a MUST would be unreasonable.

    Brian