[tsvwg] L4Sops - Operational Guidance on Coexistence with Classic ECN during L4S Deployment

Greg White <g.white@CableLabs.com> Tue, 04 November 2025 05:03 UTC

Return-Path: <g.white@CableLabs.com>
X-Original-To: tsvwg@mail2.ietf.org
Delivered-To: tsvwg@mail2.ietf.org
Received: from localhost (localhost [127.0.0.1]) by mail2.ietf.org (Postfix) with ESMTP id 747908230AC7 for <tsvwg@mail2.ietf.org>; Mon, 3 Nov 2025 21:03:11 -0800 (PST)
X-Virus-Scanned: amavisd-new at ietf.org
X-Spam-Flag: NO
X-Spam-Score: -2.095
X-Spam-Level:
X-Spam-Status: No, score=-2.095 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_NONE=0.001] autolearn=ham autolearn_force=no
Authentication-Results: mail2.ietf.org (amavisd-new); dkim=pass (2048-bit key) header.d=cablelabs.com
Received: from mail2.ietf.org ([166.84.6.31]) by localhost (mail2.ietf.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xKoZXqaVlZz5 for <tsvwg@mail2.ietf.org>; Mon, 3 Nov 2025 21:03:10 -0800 (PST)
Received: from CY3PR05CU001.outbound.protection.outlook.com (mail-westcentralusazon11023085.outbound.protection.outlook.com [40.93.201.85]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail2.ietf.org (Postfix) with ESMTPS id 8CBC68230ABD for <tsvwg@ietf.org>; Mon, 3 Nov 2025 21:03:10 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=q+GOTDwepBdhREihEMrGF5KYVW3sDNz3YnOkovBUaZCiMHs5fyru9oTFMAsZk0E9jcirtqvQ1mNiZlqrGNVEi6l4EXbuwppbUOWL8bL/aQ2TO40+5KbktDWhZnbZH1QpklFR+TIMZCcQ2pJpORHBnH/Ny/Qxdvn5bPC6k/g7+ceSW2VPOh6KTJj0G8UqURaRfCX75AXuMCcpIbDt9k0pDdmExni97EFTpSiWRrpEstWsV3KZOz0Qwnn4mJzs40DNmXxrvpJP9DN0pTPMMMqlg0xLgXEbl2IqmrgYgF7dyatsOX0JdRPdwN4MOagCFni5nUjtLen7drl+5g0Ilxaurw==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=d5E1JN2dZPvVmgDTu551zpdSSLSmXYYZZrvkNRuH5J8=; b=K3q7Je5rbCs1ms6r0gZUm8hoaEjW4wtywWjiBrwQGCJRSmWbtdFH8/W93FnD0Miro2OxjMVap/fNmTF3LXMsSoaQvGud9GQO0QeOsQ8LmqHf3ATMD+oqK13cx/QjhSqLM5ybJnZtPjhXFY7f+MfB2AApl96wKn+CMg/xnJYtRpSmNIfY3PIH6eogyJbDCDbOadddmETZyPW5zssYaH7DDN4fm90xi6ERck6B5j/ryHMbmMIzvdkIz/lNjC4mLbO3XRc72PnwhjbijIUiyvG+XWx+srwMG+Ix980cEXq1M1bO2vxaJdDK/z+jiss3HUvmewujyKcy40G7LWXCtPTcXA==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cablelabs.com; dmarc=pass action=none header.from=cablelabs.com; dkim=pass header.d=cablelabs.com; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cablelabs.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=d5E1JN2dZPvVmgDTu551zpdSSLSmXYYZZrvkNRuH5J8=; b=ZcjO47qalXdGo0i7V6YWhQ0picFPB8zpKEJGJTKItt/i+TT9jt9gLoE21DE+Gw4Y28G69zPB2sAFS/MiGWZYsmTq/LPBkmvwz0wWXA7wUeNAceZ/OoTqJqVadQvIVpxht5tnfeHj0Ih10F5AUkWuvTF+arej0xORc749X03VQ5Wt7p+1Nnb0jaEw0wVBtdgj/rHQ8zJNw1wpUde4WQUGzXvwtXDvMvI7rWd190EZJOYhvFOo3scisOqWkOJKcQVawuRYur97vCFzg9yz0N/RY3LCMiWHq/7jfqPvLKGOSKCEpIh+KADyLZ6XgpOF/6iL0n+UyU3kpAxATsor/nn0FA==
Received: from MWHPR0601MB3657.namprd06.prod.outlook.com (2603:10b6:301:7c::23) by IA4PR06MB10825.namprd06.prod.outlook.com (2603:10b6:208:54f::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9298.7; Tue, 4 Nov 2025 05:03:02 +0000
Received: from MWHPR0601MB3657.namprd06.prod.outlook.com ([fe80::5c72:2ea6:2bca:4b44]) by MWHPR0601MB3657.namprd06.prod.outlook.com ([fe80::5c72:2ea6:2bca:4b44%3]) with mapi id 15.20.9275.015; Tue, 4 Nov 2025 05:03:02 +0000
From: Greg White <g.white@CableLabs.com>
To: "tsvwg@ietf.org" <tsvwg@ietf.org>
Thread-Topic: L4Sops - Operational Guidance on Coexistence with Classic ECN during L4S Deployment
Thread-Index: AQHcTUhLD0c4xOW3b0SsE1aKlERidg==
Date: Tue, 04 Nov 2025 05:03:02 +0000
Message-ID: <D1C2FC28-1D87-4999-A781-25A130121189@CableLabs.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/16.100.25090553
authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=CableLabs.com;
x-ms-publictraffictype: Email
x-ms-traffictypediagnostic: MWHPR0601MB3657:EE_|IA4PR06MB10825:EE_
x-ms-office365-filtering-correlation-id: fb1fb044-02df-4f47-45c8-08de1b5f6e76
x-ms-exchange-senderadcheck: 1
x-ms-exchange-antispam-relay: 0
x-microsoft-antispam: BCL:0;ARA:13230040|366016|376014|1800799024|10070799003|8096899003|38070700021;
x-microsoft-antispam-message-info: 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
x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MWHPR0601MB3657.namprd06.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(376014)(1800799024)(10070799003)(8096899003)(38070700021);DIR:OUT;SFP:1102;
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: z+yn2+09hSeeuEHzFQmmNRJROHrrJvpsR7OqcTXGKT2+I8Eti6yRctDTbXNnwDIy77tzWpIh5962Y2H5mQm2eo8KP+XNt9WU25o0ibIJtCyoOn6BwE2pGXtHAYXWl/AzDwFOVNOH8SJ1q5WxTSeGu2o6gWLSIzNDjVBAtGhQqcbQ03lncyERIXSIKczGkwsWjOQ2AxwCaFFio3rHKaSHflrDk3vV66BwEhWnRaVCl+wa6Ek61bmQxUdn08qKSav62bhfHDvH3yeuiN3EQuB4KTxnXOpDQvAzDraW79+wrt+FHFzaeFntgjbJo7aW7iUcronVKVDFa7dRvb7aqU9jfe/rpfMYgGg9v+sbBs+SOVvmrDzCGrY4y5qs60ZGznoObpNe9L0meCW0fl/HE9+cnE0K8rzl2tIbBWc8i83fW9Z9Bm1HdhRWma9PWhEWwQO55v2xWf2iV6AfYCh1qhTKq1cxD0rQYQh3yMuszdHTXmTB0FdkSFnAyB5BcjRhCRPtH+t8/Fxd/HiEiWRawe2sEjuOpBX/fgnUmgE88SraLv5ch//HIUl2LqUe/CsCRtuUyITmA7w5+uG8XopYrlErUUXF26AO0rtn52p1IiPNZYk2otHxkptJwS2bqxKMIrnBZvvNv7Pt18F42ZmW7sS9RdmpX7OuRUzbBKmknXQMvJJEdMbr90QbgLUX5qh2oshK9dvbQJ0bldevC4DiH/svR4oouIOkTiU9uPBmAIWemS7Ywkm8HWHkLpwFML2dtAn3LDLR766kTIoYMbYUU9G+G84JPJakj8RBnaFxEay4wjWNCJCUSIhCLeHFkznAbIfOIFHyfa+mZyREyiAL67i/N7NDaSZvDjlxbMlP6CmD4iYb/g7En98uyqxqdOqVPAtyd5CjYerVz0e2HmZSH8u3N2XcamJC4Nan3dlKAgRqS52BR53AR+7y5wIYa11guT0fEQlTR/v0Ujbh/vzQ1VtyLh+5NdugGxNAredNEkII3Irl7I/vdOQBXO5rEdSAD8hVa+vjqkXxVFMQBPqaXiBONXYggV0fJPojAq3Ma9s8clIdOw480xeagxnrm1AFQHvPCMgJFsSHwlq66TMRefjlrFsPdVduBSxnXdEIsXOzGGDAyozKQaU5k3pevXSuUILewwGwnKMjdbazzWWyDImGA3uhJQdmptRQky13ZlDyvs2D2DMeXHW/fuf2wE9zHFAh9xYSmL0CR9CRIocE6INDkEktdGGhrY8/YB+RoQi/2KuuP+j40fP0yQ/BV2oQBXvhCp7b3bRri6qQcNSfYNmJDwb6rz4RLdIjRxaW9N8B2UztkCYXC86Bf19OIbiYfFWDBLnTbSbX5UV8oXWfqEv3l4sxuncQ+CH4sjwFjgxl0wqKmOMJSQadduXjxzCcOQck3rObnaYWu3yKdpgOaZDTLthgr8CMcecZmNX7yVp6oJ11bDBMhPtdnu2K/yykHjTxvUrh0QNlwY9Z0573pbqqE4J/okGrVa47DZ+mjH3yEZzuU9BdecxhoHtnzI262tdWGVFJLouP02wVcWOG82lJVdKcXFiMhFZBuhSyGBj/OU/xmshV49F2MZIJF08W2TvXibZ/l1WxsAfuAnMpCdoLILyJWNIaVyxhW/BKTQ+LsIKdnV/iN9YAY0COYUnrqNmjmZFC/lg2FU6LXgiy+4BxrQ==
Content-Type: multipart/alternative; boundary="_000_D1C2FC281D874999A78125A130121189CableLabscom_"
MIME-Version: 1.0
X-OriginatorOrg: cablelabs.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: MWHPR0601MB3657.namprd06.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: fb1fb044-02df-4f47-45c8-08de1b5f6e76
X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Nov 2025 05:03:02.1863 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: ce4fbcd1-1d81-4af0-ad0b-2998c441e160
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: xAXriRH2WvQkaJkVV5mN8t0f6MGEKL0gkLogqomAKvNetybXgbgqeSDSkN8ph6ge7cZS5z8JLn4hI81du3yncw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA4PR06MB10825
Message-ID-Hash: IB5DVB3RYM7QWS7AULCUSGEOXSX2BSSS
X-Message-ID-Hash: IB5DVB3RYM7QWS7AULCUSGEOXSX2BSSS
X-MailFrom: g.white@CableLabs.com
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tsvwg.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header
X-Mailman-Version: 3.3.9rc6
Precedence: list
Subject: [tsvwg] L4Sops - Operational Guidance on Coexistence with Classic ECN during L4S Deployment
List-Id: Transport Area Working Group <tsvwg.ietf.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/tsvwg/WswBTJF1Wm92c2HG6gunfvHdqXc>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tsvwg>
List-Help: <mailto:tsvwg-request@ietf.org?subject=help>
List-Owner: <mailto:tsvwg-owner@ietf.org>
List-Post: <mailto:tsvwg@ietf.org>
List-Subscribe: <mailto:tsvwg-join@ietf.org>
List-Unsubscribe: <mailto:tsvwg-leave@ietf.org>

TSVWG,

At the WG session this week, the chairs commented that the L4S Ops<https://datatracker.ietf.org/doc/draft-ietf-tsvwg-l4sops/> draft would start WGLC soon. In order to meet the WG milestone of submitting this as an Informational RFC by December, I would like to ask the chairs to start WGLC as soon as possible.  The draft has been in steady-state for quite some time, and has seen quite a bit of review over the last several years, but a WGLC will undoubtedly uncover the need for clarifications and edits. If we want to get this done before the end of the year, we will need to get the process started.

Thanks,
Greg