Re: [Int-dir] [Lwip] Int Dir telechat review of draft-ietf-lwig-tcp-constrained-node-networks-11

"Bernie Volz (volz)" <volz@cisco.com> Fri, 30 October 2020 11:10 UTC

Return-Path: <volz@cisco.com>
X-Original-To: int-dir@ietfa.amsl.com
Delivered-To: int-dir@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8FCB23A09EA; Fri, 30 Oct 2020 04:10:49 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -9.598
X-Spam-Level:
X-Spam-Status: No, score=-9.598 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, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com header.b=M3n1Nm/S; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=AtXfnxQt
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id c2Q5XqAj8BnU; Fri, 30 Oct 2020 04:10:48 -0700 (PDT)
Received: from alln-iport-5.cisco.com (alln-iport-5.cisco.com [173.37.142.92]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AD35D3A08B2; Fri, 30 Oct 2020 04:10:47 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=6392; q=dns/txt; s=iport; t=1604056247; x=1605265847; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=7fC+LFASVjlDBQDc4fVFt8eKf/qKde5kDGFRC80NkOQ=; b=M3n1Nm/SK+khVNl5xiW8Bd53vmWaOH4Sj9pbLtjdG/i6gfzbgaEP6AnF Clm+Tv3cRecpSsMLxXhMQxmo1WOLtpo2mxeFuOumNZsUxdalUibaKx8N1 pCEotm1DOJQPF8Fitm9Z4ZuOKtlG5dqS3n2k6JaNksSbREWWSbEH2+T6h g=;
IronPort-PHdr: =?us-ascii?q?9a23=3A8en2SxQZmCcTU4vm+97ASoRvwtpsv++ubAcI9p?= =?us-ascii?q?oqja5Pea2//pPkeVbS/uhpkESQB9mJ5/dNkeGQsq38VyoH+5nS+HwBcZkZUR?= =?us-ascii?q?gDhI1WmgE7G8eKBAX9K+KidC01GslOFToHt3G2OERYAoDyMlvVpHDh4TsbAB?= =?us-ascii?q?65NAdpKKLyAIGBx8iy3vq5rpvUZQgAjTGhYLR0eROxqwiZtsQfjYZ4bKgrzR?= =?us-ascii?q?6cqXpTcOMQzmRtdl8=3D?=
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0D9CADv85tf/5RdJa1iDg8BAQEBCQE?= =?us-ascii?q?SAQUFAUCBT4FSKSgHcFkvLgqEM4NJA40mJph+glMDVAsBAQENAQEYDQgCBAE?= =?us-ascii?q?BgVWCdQIXgXACJTgTAgMBAQsBAQUBAQECAQYEcYVhDIVyAQEBAQIBAQEQBgs?= =?us-ascii?q?RDAEBLAsBBAsCAQgYAgImAgICJQsVEAEBBA4FIoMEAYJLAw4gAQ6jMQKBO4h?= =?us-ascii?q?odoEygwQBAQWBNwKDdhiCEAMGgQ4qgnKDcYZXG4IAgREnDBCBUVAuPoJdAQE?= =?us-ascii?q?CAYEjOYMXM4IskBYTgnw9ozyBAwqCbIkIkX0DH4MXihGUPp4/kgSDQwIEAgQ?= =?us-ascii?q?FAg4BAQWBayOBV3AVOyoBggoBM1AXAg2ISIVXDBcUbgEOgj2FFIUEQHQCNgI?= =?us-ascii?q?GAQkBAQMJfIsGgTUBgRABAQ?=
X-IronPort-AV: E=Sophos;i="5.77,433,1596499200"; d="scan'208";a="591098520"
Received: from rcdn-core-12.cisco.com ([173.37.93.148]) by alln-iport-5.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 30 Oct 2020 11:10:46 +0000
Received: from XCH-RCD-005.cisco.com (xch-rcd-005.cisco.com [173.37.102.15]) by rcdn-core-12.cisco.com (8.15.2/8.15.2) with ESMTPS id 09UBAkIk006596 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Fri, 30 Oct 2020 11:10:46 GMT
Received: from xhs-aln-003.cisco.com (173.37.135.120) by XCH-RCD-005.cisco.com (173.37.102.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 30 Oct 2020 06:10:46 -0500
Received: from xhs-rtp-003.cisco.com (64.101.210.230) by xhs-aln-003.cisco.com (173.37.135.120) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 30 Oct 2020 06:10:45 -0500
Received: from NAM12-MW2-obe.outbound.protection.outlook.com (64.101.32.56) by xhs-rtp-003.cisco.com (64.101.210.230) with Microsoft SMTP Server (TLS) id 15.0.1497.2 via Frontend Transport; Fri, 30 Oct 2020 07:10:45 -0400
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=l3j0v3UQfeh4uNwRMcS5n9VwiAwUkVb5KjIhExYuGpmwzzOK7VXgNvW8n1b0krl5FvJV/4RbmmkBtejtHpOOWu8WGkXGxn8AEw9PRlCJvXca5Rcqj5UeJMdagr5cpVZUpEV4AEZKpRZxDgdrErklfG5MQDGJcfC3Xf9SvoGFCIdk//DliQlQL05hJ2yHSw8eZ6xfR5/6V85cQlRtMkVr7Ngpwt+9bk3mIShQlHftOWzsTiXMyIjjzao05oCZpT3g9jHfAxY8y3L38NGhR3LYbODS580HFIsZd6pPrTUYRKr3c/tb3lEeTdqbg0lzc7eynHQs4GCvl8KoPGM9NJx+jA==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=7fC+LFASVjlDBQDc4fVFt8eKf/qKde5kDGFRC80NkOQ=; b=dygDVefv6eKAoYsHT43n1CQZjGSEnzLF/RZ44bGJFUHcQdYQVK+n7K/ZFmr8KmcyYg5CshISkUCHQrGsIk7kLCcSEgkeukZDAC4O1Q8X2mROdKZQ+Xh9qiKYVdYzDmEQ/uh2kdQTJ2tZvATIjBRN7rzV4Bt7tvkbSD7YbEX9Z4SWjeQgp6h8vyW02jjMMCEr8+gQ0ax8cwIrdknVqhl8CuBzC6FEUDrjxZLUOFho558zr86Dxh7cT//rPihr87F1wKSlqFv6racw6CUY2WZRinL6Kk9v8lwVSfB+LuCROvDZVZ4fSicEvjiRQpWvYB5qrFzeyWwXHJHIScp1zAmSYg==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cisco.com; dmarc=pass action=none header.from=cisco.com; dkim=pass header.d=cisco.com; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cisco.onmicrosoft.com; s=selector2-cisco-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=7fC+LFASVjlDBQDc4fVFt8eKf/qKde5kDGFRC80NkOQ=; b=AtXfnxQtp5zHL5eplhmegEqh4QSF1oxy1Y/FFr54NARs9168ihJYLCXIlNgPgqXjmLYQN4yjobrGYR86TeDfjpHw03MaOisLzs+WXoHNI1zRmbT4MMelXIknKTuGgOGu2Wsl3oiBZoXRdSl28YmvyTPDaGjSTKh4At6O+WJaB9w=
Received: from BN7PR11MB2547.namprd11.prod.outlook.com (2603:10b6:406:af::18) by BN6PR11MB0002.namprd11.prod.outlook.com (2603:10b6:405:62::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3499.29; Fri, 30 Oct 2020 11:10:43 +0000
Received: from BN7PR11MB2547.namprd11.prod.outlook.com ([fe80::1dc1:e7f4:84ef:3711]) by BN7PR11MB2547.namprd11.prod.outlook.com ([fe80::1dc1:e7f4:84ef:3711%6]) with mapi id 15.20.3499.028; Fri, 30 Oct 2020 11:10:43 +0000
From: "Bernie Volz (volz)" <volz@cisco.com>
To: Carles Gomez Montenegro <carlesgo@entel.upc.edu>
CC: "Bernie Volz (volz)" <volz=40cisco.com@dmarc.ietf.org>, "draft-ietf-lwig-tcp-constrained-node-networks@ietf.org" <draft-ietf-lwig-tcp-constrained-node-networks@ietf.org>, "last-call@ietf.org" <last-call@ietf.org>, "Eric Vyncke (evyncke)" <evyncke@cisco.com>, "lwip@ietf.org" <lwip@ietf.org>, "int-dir@ietf.org" <int-dir@ietf.org>
Thread-Topic: [Int-dir] [Lwip] Int Dir telechat review of draft-ietf-lwig-tcp-constrained-node-networks-11
Thread-Index: AdanDEXvpTYpa7QHSQqmacNLrYzpEQHhuNaAAAaJYOs=
Date: Fri, 30 Oct 2020 11:10:43 +0000
Message-ID: <DA86E38F-B1FA-4A25-8461-399B9C67E2E3@cisco.com>
References: <BN7SPR01MB0024B07CE9E12A1509EA39D5CF1F0@BN7SPR01MB0024.namprd11.prod.outlook.com>, <64715ab7503a1fb4f54fb7bab64f789b.squirrel@webmail.entel.upc.edu>
In-Reply-To: <64715ab7503a1fb4f54fb7bab64f789b.squirrel@webmail.entel.upc.edu>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
authentication-results: dmarc.ietf.org; dkim=none (message not signed) header.d=none;dmarc.ietf.org; dmarc=none action=none header.from=cisco.com;
x-originating-ip: [24.233.121.124]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 2a665b1d-5ad1-4753-a637-08d87cc47179
x-ms-traffictypediagnostic: BN6PR11MB0002:
x-ms-exchange-transport-forked: True
x-microsoft-antispam-prvs: <BN6PR11MB00021EE906B81A1E53659DCFCF150@BN6PR11MB0002.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:6430;
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info: PC4I1O1Z/BHorV43AyzXqiji29olDADLl8dgcITNTKGUS7zoUI5ktGZL2pG/1jlTFbnfGzi9sVdyK0mJZSZQq+X5MISrKctBFwm+HkoVERRoOhWzfBg7hhGS+FvbGrX9ZJcmimgGKlDUO2XEQcyNMAdofI/PJ/Ll5z8+DePhNb+MS5Zhe5BfphNIZuzDNNs43DIFiF5iAbLpEq1SRB8emUSAXZlu1CepEZZ/5aG8Vp6z+bBYkMAbODa2+Dxwsk+twu3RdtHPjlizowwQ9irJV1BD0hk7dVP8to/6QGyEDGYujN8EmpbVTKPVwrLX3do/VIfccm5n+E+MNIlvTRQj1A1h3PTh6CV9k0nFeTSrR2ZG4iAm1GQZAkb108hmel5ZCirYd8upY6pbBZhy9QXorw==
x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:BN7PR11MB2547.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(39860400002)(396003)(136003)(376002)(366004)(346002)(4326008)(86362001)(26005)(6512007)(6916009)(66446008)(66556008)(64756008)(966005)(5660300002)(186003)(54906003)(66476007)(76116006)(91956017)(83380400001)(478600001)(66574015)(316002)(2616005)(36756003)(66946007)(53546011)(6506007)(8936002)(6486002)(33656002)(2906002)(8676002)(71200400001); DIR:OUT; SFP:1101;
x-ms-exchange-antispam-messagedata: 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
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: BN7PR11MB2547.namprd11.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 2a665b1d-5ad1-4753-a637-08d87cc47179
X-MS-Exchange-CrossTenant-originalarrivaltime: 30 Oct 2020 11:10:43.1317 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: rc5TcGHjS4Fx7bJzq6UpuUW+Mn5nYECrg7R5YOFatjlRT9ufXVO+nTvD491jnDMv
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR11MB0002
X-OriginatorOrg: cisco.com
X-Outbound-SMTP-Client: 173.37.102.15, xch-rcd-005.cisco.com
X-Outbound-Node: rcdn-core-12.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/int-dir/5MVcYe22u71Se7S7Yp1Y_-OcdJU>
Subject: Re: [Int-dir] [Lwip] Int Dir telechat review of draft-ietf-lwig-tcp-constrained-node-networks-11
X-BeenThere: int-dir@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "This list is for discussion between the members of the Internet Area directorate." <int-dir.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/int-dir>, <mailto:int-dir-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/int-dir/>
List-Post: <mailto:int-dir@ietf.org>
List-Help: <mailto:int-dir-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/int-dir>, <mailto:int-dir-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 30 Oct 2020 11:10:50 -0000

RFC editor will fix remaining typos so no need to worry about those.

- Bernie

> On Oct 30, 2020, at 4:03 AM, Carles Gomez Montenegro <carlesgo@entel.upc.edu> wrote:
> 
> Hi Bernie,
> 
> Thank you very much for your review!
> 
> We just submitted revision -12, which aims at addressing the comments
> received from the IESG and related reviewers, including yours:
> https://tools.ietf.org/html/draft-ietf-lwig-tcp-constrained-node-networks-12
> 
> Please find below our inline responses:
> 
>> Hi:
>> 
>> I am an assigned INT directorate reviewer for
>> draft-ietf-lwig-tcp-constrained-node-networks (-11). These comments were
>> written primarily for the benefit of the Internet Area Directors. Document
>> editors and shepherd(s) should treat these comments just like they would
>> treat comments from any other IETF contributors and resolve them along
>> with any other Last Call comments that have been received. For more
>> details on the INT Directorate, see
>> https://datatracker.ietf.org/group/intdir/about/.
>> 
>> Reviewer: Bernie Volz
>> Review result: Ready (with minor nits)
>> 
>> Minor nits:
>> 
>> Section 2 should probably be updated to use the newer keyword boilerplate
>> (to reference RFC8174, etc.)?
> 
> Actually, since the document does not use normative language, and
> according to the suggestions by some reviewers, we decided to remove
> Section 2.
> 
>> In Section 4.1.2 RTO is used (and also later) but this isn't defined until
>> section 4.2.4. Perhaps this is better defined when first used?
> 
> Agreed.
> 
>> In section 4.2.2, the following paragraph is a bit odd:
>> 
>> 
>>   One potentially relevant TCP option in the context of CNNs is TCP
>> 
>>   Fast Open (TFO) [RFC7413<https://tools.ietf.org/html/rfc7413>]3>].  As
>> described in Section
>> 5.3<https://tools.ietf.org/html/draft-ietf-lwig-tcp-constrained-node-networks-11#section-5.3>.3>,
>> TFO can be
>> 
>>   used to address the problem of traversing middleboxes that perform
>> 
>>   early filter state record deletion.
>> 
>> Fast open isn't really used to address this issue. Section 5.3 is about
>> "TCP connection lifetime" and TFO is discussed there in the context of
>> reducing the (initial) messages and latency. Perhaps this paragraph needs
>> to be reworked a bit? If the point is about TFO, then you should indicate
>> what it is for (about optimizing short lived connections)?
> 
> Yes, the paragraph was not in a very good shape, and perhaps TFO is not so
> specifically relevant to single-MSS stacks. Since TFO was better covered
> in Section 5.3 (now, Section 4.3) we decided to actually remove the
> paragraph.
> 
>> General: While RFC-editor will do, s/subsection/section is probably a good
>> idea as subsection isn't generally used in IETF documents when doing
>> references.
> 
> Done.
> 
>> For section 8, it is too bad that some version/release information about
>> the particular "code" analyzed wasn't included. It says "be aware that
>> this Annex is based on information available as of the writing". But will
>> that still be valid when the RFC finally becomes available? Work started
>> on the document in Oct 2016 and I didn't go back to see when the various
>> sections were added. On the other hand, perhaps these implementations
>> don't evolve as rapidly as general software? It does seem to be a nice
>> survey of the available implementations.
> 
> We understand that the information in section 8 is currently valid. We did
> our best to provide references (or version numbers) whenever possible.
> However, information sources are quite heterogeneous, and in a couple of
> cases (FreeRTOS, uC/OS) we were not able to find a specific release number
> related to the information provided.
> 
>> And, there are at least the following typos:
>> 
>> characterstic
>> codesize (perhaps code size)
>> bandwitdh
>> practise
>> differrent
>> communcation
> 
> We made the corresponding corrections in our working copy, but I just
> realized that there is still one instance of "characterstic" and
> "codesize" in -12... The rest of typos have been corrected. Sorry for
> that. We will definitely address those in the next revision. :(
> 
>> 
>>  *   Bernie
> 
> Thanks,
> 
> Carles (on behalf of the authors)
> 
> 
> 
>> 
>> 
>> 
>> 
>> _______________________________________________
>> Lwip mailing list
>> Lwip@ietf.org
>> https://www.ietf.org/mailman/listinfo/lwip
>> 
> 
> 
> _______________________________________________
> Int-dir mailing list
> Int-dir@ietf.org
> https://www.ietf.org/mailman/listinfo/int-dir