Re: [tsvwg] [Ecn-sane] Comments on L4S drafts
Dave Taht <dave@taht.net> Sat, 20 July 2019 21:03 UTC
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From: Dave Taht <dave@taht.net>
To: Sebastian Moeller <moeller0@gmx.de>
Cc: Jonathan Morton <chromatix99@gmail.com>, "Black, David" <David.Black@dell.com>, "tsvwg@ietf.org" <tsvwg@ietf.org>, "ecn-sane@lists.bufferbloat.net" <ecn-sane@lists.bufferbloat.net>, "De Schepper, Koen (Nokia - BE/Antwerp)" <koen.de_schepper@nokia-bell-labs.com>
References: <364514D5-07F2-4388-A2CD-35ED1AE38405@akamai.com> <4aff6353-eb0d-b0b8-942d-9c92753f074e@bobbriscoe.net> <D13294C4-105C-4F58-A762-6911A21A18C6@akamai.com> <CAH8sseSQaCbknok--hf=DgwzCs3OnnkKjPy5bdLgnzjq7-+c_w@mail.gmail.com> <ce4b1e2d-3bc8-265c-6bcd-5a26b4dd89e9@bobbriscoe.net> <1238A446-6E05-4A55-8B3B-878C8F39FC75@gmail.com> <AM4PR07MB3459B1173917DAFBCEB25511B9FA0@AM4PR07MB3459.eurprd07.prod.outlook.com> <17B33B39-D25A-432C-9037-3A4835CCC0E1@gmail.com> <AM4PR07MB345956F52D92759F24FFAA13B9F50@AM4PR07MB3459.eurprd07.prod.outlook.com> <52F85CFC-B7CF-4C7A-88B8-AE0879B3CCFE@gmail.com> <AM4PR07MB3459B471C4D7ADAE4CF713F3B9F60@AM4PR07MB3459.eurprd07.prod.outlook.com> <D231681B-1E57-44E1-992A-E8CC423926B6@akamai.com> <AM4PR07MB34592A10E2625C2C32B9893EB9F00@AM4PR07MB3459.eurprd07.prod.outlook.com> <A6F05DD3-D276-4893-9B15-F48E3018A129@gmx.de> <AM4PR07MB3459487C8A79B1152E132CE1B9CB0@AM4PR07MB3459.eurprd07.prod.outlook.com> <87ef2myqzv.fsf@taht.net> <a85d38ba-98ac-e43e-7610-658f4d03e0f4@mti-systems.com> <CE03DB3D7B45C245BCA0D243277949363062879C@MX307CL04.corp.emc.com> <803D9CA8-220E-4F98-9B8E-6CE2916C3100@gmail.com> <0079BC6B-4792-48ED-90D3-D9A69407F316@gmx.de>
Date: Sat, 20 Jul 2019 14:02:48 -0700
In-Reply-To: <0079BC6B-4792-48ED-90D3-D9A69407F316@gmx.de> (Sebastian Moeller's message of "Sat, 20 Jul 2019 00:03:57 +0200")
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Subject: Re: [tsvwg] [Ecn-sane] Comments on L4S drafts
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Sebastian Moeller <moeller0@gmx.de> writes: > Hi Jonathan, > > > >> On Jul 19, 2019, at 22:44, Jonathan Morton <chromatix99@gmail.com> wrote: >> >>> On 19 Jul, 2019, at 4:06 pm, Black, David <David.Black@dell.com> wrote: >>> >>> To be clear on what I have in mind: >>> o Unacceptable: All traffic marked with ECT(1) goes into the L4S queue, independent of what DSCP it is marked with. >>> o Acceptable: There's an operator-configurable list of DSCPs >>> that support an L4S service - traffic marked with ECT(1) goes into >>> the L4S queue if and only if that traffic is also marked with a >>> DSCP that is on the operator's DSCPs-for-L4S list. >> >> I take it, in the latter case, that this increases the cases in >> which L4S endpoints would need to detect that they are not receiving >> L4S signals, but RFC-3168 signals. The current lack of such a >> mechanism therefore remains concerning. For comparison, SCE >> inherently retains such a mechanism by putting the RFC-3168 and >> high-fidelity signals on different ECN codepoints. >> >> So I'm pleased to hear that the L4S team will be at the hackathon >> with a demo setup. Hopefully we will be able to obtain comparative >> test results, using the same test scripts as we use on SCE, and also >> insert an RFC-3168 single queue AQM into their network to >> demonstrate what actually happens in that case. I think that the >> results will be illuminating for all concerned. > > What I really would like to see, how L4S endpoints will deal > with post-bottleneck ingress shaping by an RFC3168 -compliant > FQ-AQM. I know the experts here deems this not even a theoretical > concern, but I really really want to see data, that L4S flows will not > crowd out the more reactive RFC3168 flows in that situation. This is > the set-up quite a number of latency sensitive end-users actually use > to "debloat" the internet and it would be nice to have real data > showing that this is not a concern. +10 > > Best Regards > Sebastian > > > >> >> - Jonathan Morton >> _______________________________________________ >> Ecn-sane mailing list >> Ecn-sane@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/ecn-sane
- [tsvwg] Comments on L4S drafts Holland, Jake
- Re: [tsvwg] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] Comments on L4S drafts Ingemar Johansson S
- Re: [tsvwg] Comments on L4S drafts Holland, Jake
- Re: [tsvwg] Comments on L4S drafts Holland, Jake
- Re: [tsvwg] Comments on L4S drafts Luca Muscariello
- Re: [tsvwg] Comments on L4S drafts Dave Taht
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] Comments on L4S drafts Ingemar Johansson S
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Ingemar Johansson S
- Re: [tsvwg] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] Comments on L4S drafts Holland, Jake
- Re: [tsvwg] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] Comments on L4S drafts Luca Muscariello
- Re: [tsvwg] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Jonathan Morton
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts De Schepper, Koen (Nokia - BE/Antwerp)
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Jonathan Morton
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts De Schepper, Koen (Nokia - BE/Antwerp)
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Jonathan Morton
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Jonathan Morton
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Luca Muscariello
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts De Schepper, Koen (Nokia - BE/Antwerp)
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Holland, Jake
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts De Schepper, Koen (Nokia - BE/Antwerp)
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] Comments on L4S drafts Holland, Jake
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Holland, Jake
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts De Schepper, Koen (Nokia - BE/Antwerp)
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts De Schepper, Koen (Nokia - BE/Antwerp)
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Gorry Fairhurst
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Wesley Eddy
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Black, David
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Jonathan Morton
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Wesley Eddy
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Scharf, Michael
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Gorry Fairhurst
- [tsvwg] Hackathon tests Dave Taht
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Jonathan Morton
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Black, David
- Re: [tsvwg] New Version Notification for draft-gr… alex.burr@ealdwulf.org.uk
- Re: [tsvwg] New Version Notification for draft-gr… Jonathan Morton
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] New Version Notification for draft-gr… alex.burr@ealdwulf.org.uk
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- Re: [tsvwg] [tcpm] New Version Notification for d… Scharf, Michael
- Re: [tsvwg] [tcpm] New Version Notification for d… Jonathan Morton
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Bless, Roland (TM)
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts De Schepper, Koen (Nokia - BE/Antwerp)
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Pete Heist
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Dave Taht
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts De Schepper, Koen (Nokia - BE/Antwerp)
- Re: [tsvwg] [tcpm] New Version Notification for d… Bob Briscoe
- Re: [tsvwg] [tcpm] New Version Notification for d… Scharf, Michael
- Re: [tsvwg] [tcpm] New Version Notification for d… Black, David
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Bob Briscoe
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Sebastian Moeller
- [tsvwg] [Ecn-sane] Compatibility with singlw queu… Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Comments on L4S drafts Pete Heist
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … Black, David
- [tsvwg] The state of l4s, bbrv2, sce? Dave Taht
- Re: [tsvwg] The state of l4s, bbrv2, sce? Dave Taht
- Re: [tsvwg] The state of l4s, bbrv2, sce? Neal Cardwell
- Re: [tsvwg] The state of l4s, bbrv2, sce? Dave Taht
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … Holland, Jake
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … Black, David
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … Black, David
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … Sebastian Moeller
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … Jonathan Morton
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … Mikael Abrahamsson
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … Mikael Abrahamsson
- Re: [tsvwg] [Ecn-sane] Compatibility with singlw … John Leslie
- Re: [tsvwg] New Version Notification for draft-gr… Rodney W. Grimes
- Re: [tsvwg] New Version Notification for draft-gr… Gorry Fairhurst
- Re: [tsvwg] New Version Notification for draft-gr… Jonathan Morton
- Re: [tsvwg] New Version Notification for draft-gr… Gorry Fairhurst
- Re: [tsvwg] New Version Notification for draft-gr… Sebastian Moeller
- Re: [tsvwg] New Version Notification for draft-gr… Gorry Fairhurst
- Re: [tsvwg] [tcpm] New Version Notification for d… Scharf, Michael
- Re: [tsvwg] New Version Notification for draft-gr… Rodney W. Grimes
- Re: [tsvwg] [tcpm] New Version Notification for d… Loganaden Velvindron
- Re: [tsvwg] [tcpm] New Version Notification for d… Black, David