Discussion of explicit congestion notification's impact on the Internet
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From: Carsten Bormann <cabo@tzi.org>
To: Jonathan Morton <chromatix99@gmail.com>
Cc: Sebastian Moeller <moeller0@gmx.de>,
	ECN-Sane <ecn-sane@lists.bufferbloat.net>,
	bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Ecn-sane] [Bloat]   sce materials from ietf
Date: Sat, 30 Nov 2019 23:17:33 +0100	[thread overview]
Message-ID: <CA4B0BC9-D9B4-4AC4-8E98-D8C2EB52C37E@tzi.org> (raw)
In-Reply-To: <385CF47C-17AD-4A62-9924-068E1485FFD5@gmail.com>

On Nov 30, 2019, at 15:32, Jonathan Morton <chromatix99@gmail.com> wrote:
> 
> There are unfortunate problems with introducing new TCP options, in that some overzealous firewalls block traffic which uses them.  This would be a deployment hazard for SCE, which merely using a spare header flag avoids.  So instead we are still planning to use the spare bit - which happens to be one that AccECN also uses, but AccECN negotiates in such a way that SCE can safely use it even with an AccECN capable partner.

This got me curious:  Do you have any evidence that firewalls are friendlier to new flags than to new options?

Grüße, Carsten


  parent reply	other threads:[~2019-11-30 22:17 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-29 20:08 [Ecn-sane] " Dave Taht
2019-11-29 21:20 ` [Ecn-sane] [Bloat] " Jonathan Morton
2019-11-29 23:10   ` alex.burr
2019-11-30  1:39     ` Jonathan Morton
2019-11-30  7:27       ` Sebastian Moeller
2019-11-30 14:32         ` Jonathan Morton
2019-11-30 15:42           ` Sebastian Moeller
2019-11-30 17:11             ` Jonathan Morton
2019-12-02  5:38               ` Dave Taht
2019-12-02  7:54                 ` Sebastian Moeller
2019-12-02  9:57                 ` Pete Heist
2019-11-30 22:17           ` Carsten Bormann [this message]
2019-11-30 22:23             ` Jonathan Morton
2019-12-01 16:35               ` Sebastian Moeller
2019-12-01 16:54                 ` Jonathan Morton
2019-12-01 19:03                   ` Sebastian Moeller
2019-12-01 19:27                     ` Jonathan Morton
2019-12-01 19:32                       ` Sebastian Moeller
2019-12-01 20:30                         ` Jonathan Morton
2019-12-01 17:30                 ` Rodney W. Grimes
2019-12-01 19:17                   ` Sebastian Moeller
2019-12-02  5:10                     ` Dave Taht
2019-12-02  7:18                       ` Sebastian Moeller
2019-11-29 22:55 ` [Ecn-sane] " Rodney W. Grimes
2019-11-29 22:58   ` Rodney W. Grimes
2019-11-30  2:37 ` Dave Taht
2019-11-30  3:10   ` Rodney W. Grimes

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