Re: [tsvwg] Follow-up to your DSCP and ECN codepoint comments at tsvwg interim

Bob Briscoe <ietf@bobbriscoe.net> Sun, 08 March 2020 14:23 UTC

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To: Sebastian Moeller <moeller0@gmx.de>, tsvwg IETF list <tsvwg@ietf.org>, Steven Blake <slblake@petri-meat.com>
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From: Bob Briscoe <ietf@bobbriscoe.net>
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Date: Sun, 08 Mar 2020 14:23:39 +0000
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Subject: Re: [tsvwg] Follow-up to your DSCP and ECN codepoint comments at tsvwg interim
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Sebastian,

On 07/03/2020 19:16, Sebastian Moeller wrote:
>> Anyway, if user B's downstream is the bottleneck for user A, even if
>> ISP
>> B doesn't bleach Diffserv, the DSCP is still no use if ISP A bleaches,
>> or if an intermediary does.
> 	[SM] That really just would show that there is a business case for ISP A and B to connect directly in a DSCP conserving fashion....
>
This is a misunderstanding of the sequencing of adoption incentives. If 
something new doesn't work in the scenarios of interest, it will never 
take off, and never affect anyone's business cases for doing anything.



Bob


-- 
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Bob Briscoe                               http://bobbriscoe.net/