[Idr] [RTG-DIR] RtgDir review : draft-ietf-idr-bgp-extended-messages-33.txt

"Shah, Himanshu" <hshah@ciena.com> Fri, 19 July 2019 01:31 UTC

Return-Path: <prvs=61033360fc=hshah@ciena.com>
X-Original-To: idr@ietfa.amsl.com
Delivered-To: idr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B43C4120044; Thu, 18 Jul 2019 18:31:07 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.699
X-Spam-Level:
X-Spam-Status: No, score=-2.699 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=ciena.com
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 7HngBb9rzhk2; Thu, 18 Jul 2019 18:31:05 -0700 (PDT)
Received: from mx0a-00103a01.pphosted.com (mx0b-00103a01.pphosted.com [67.231.152.227]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2693F12004C; Thu, 18 Jul 2019 18:31:05 -0700 (PDT)
Received: from pps.filterd (m0002317.ppops.net [127.0.0.1]) by mx0b-00103a01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id x6J1R38S008254; Thu, 18 Jul 2019 21:31:04 -0400
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ciena.com; h=from : to : cc : subject : date : message-id : content-type : mime-version; s=06252019; bh=/nn/c1DHBBXQnSIjKjq3LClXBOJ8gQEkaBDt8UmNoNo=; b=Wp1jGjvWa0qUJ9JG1xQ5jO/mFW6XMpwqtmgB/9QGCwARwAZXBRsAsE6EO9+BN6zTdJ44 J+Q3fqN6Sy2IN2NbyqHApWGhscUGp4oVuMNxsugO+ZRM/8yjcIU2tLFWVHqnw9UwtkU2 tZilkzyF8FBIUuXOedQboF4y79DRZaRw1mENPbJxmx3yy/tIAEyfjnbqn2s4+ihyIjoi i/iiOtB9Fcj3mOJeI08/cAz+/Hglg0rcu3hMXauYPYRVOtXI5NnlZDeVzsvbnN+xWUmx qXeQZ2PKvCoI09Sgc/Qn8M46eAHZeqRezw70oaOvuIvaeemtMMkTfGTgwSLHhuMc14hm lw==
Received: from nam03-by2-obe.outbound.protection.outlook.com (mail-by2nam03lp2058.outbound.protection.outlook.com [104.47.42.58]) by mx0b-00103a01.pphosted.com with ESMTP id 2ttv4nt4b2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Thu, 18 Jul 2019 21:31:03 -0400
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=abjTXqKqsTGpta3+Gy9WZ68vS+VCXko8q0K2768FP5d98jxSkZYy2M4u05TwwKwpgmQdW5u6+qHC+go50AoN7rOFXD9oi335I6641/24ij8hlkvAbjYiF1Wy9OKv/iF6RyuB3qR69jNHv1G7e8H/rlea8bbI9qOIKr3gTuqVcpbsxC7jv8QexmhhjGPAK/K06KztWr4sWIjlB6bor3zrMG5wJqeQ10qFQJuJd3fJpkoVJvBomBdrR5TUNnutZLSGitgmOVHTxkRXiNQ4pxn+zBez5bh0W9esmxFc4V0AgSs+SDEhQ40YRquKS0QCf9hTtg8NUq4gGpAWxFJ6cW/jFQ==
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=/nn/c1DHBBXQnSIjKjq3LClXBOJ8gQEkaBDt8UmNoNo=; b=P0ZG+evO7/Zij9LdGfLdUrLufb7kfKBOfYe3i8xPH712l8MT5SmSC1rMdz5PhqOdjlM1BFmEbvq/x20CUQxqNTQRgUmK3NiYjn64WdS0cq0GfHkkyTvr+n2H4itObTqlcUr+LsUmctW6Rd8CsMlQmYQVFDqp+aH7YBK/z8Ii7xlYGtDZS0MA8Jsxf3Y1VxRDGe7feZ1KQLHuVSs118PW0qmgBUWVn7wRnnodlu6JewcHVn/HhQlB3E6Vgu2m9hNCb/gY9w9LRGg/nmcNFr8meqMl1/w1jt3tHuq2spRAM9GQ9zjlc1AfqdTD4juNW8oXw2XNp4M1RR1u9kd2WUXP7w==
ARC-Authentication-Results: i=1; mx.microsoft.com 1;spf=pass smtp.mailfrom=ciena.com;dmarc=pass action=none header.from=ciena.com;dkim=pass header.d=ciena.com;arc=none
Received: from BYAPR04MB4663.namprd04.prod.outlook.com (52.135.240.14) by BYAPR04MB6021.namprd04.prod.outlook.com (20.178.233.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2094.11; Fri, 19 Jul 2019 01:31:02 +0000
Received: from BYAPR04MB4663.namprd04.prod.outlook.com ([fe80::9985:9af2:e49b:f63b]) by BYAPR04MB4663.namprd04.prod.outlook.com ([fe80::9985:9af2:e49b:f63b%6]) with mapi id 15.20.2073.012; Fri, 19 Jul 2019 01:31:02 +0000
From: "Shah, Himanshu" <hshah@ciena.com>
To: "<rtg-ads@ietf. org>" <rtg-ads@ietf.org>
CC: "rtg-dir@ietf.org" <rtg-dir@ietf.org>, "idr@ietf.org" <idr@ietf.org>, "draft-ietf-idr-bgp-extended-messages.all@ietf.org" <draft-ietf-idr-bgp-extended-messages.all@ietf.org>
Thread-Topic: [RTG-DIR] RtgDir review : draft-ietf-idr-bgp-extended-messages-33.txt
Thread-Index: AQHVPbeOTTN/1clPqkSBL6jNQBuH4g==
Date: Fri, 19 Jul 2019 01:31:01 +0000
Message-ID: <E14C9916-FE09-4CA3-85C7-441DDE658524@ciena.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/10.1a.0.190609
x-originating-ip: [165.225.38.253]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: edc3a681-e2d3-4f01-2412-08d70be8c297
x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(7168020)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(2017052603328)(7167020)(7193020); SRVR:BYAPR04MB6021;
x-ms-traffictypediagnostic: BYAPR04MB6021:
x-ms-exchange-purlcount: 3
x-microsoft-antispam-prvs: <BYAPR04MB6021EF051120BC7207254A6BAFCB0@BYAPR04MB6021.namprd04.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:10000;
x-forefront-prvs: 01039C93E4
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(979002)(4636009)(136003)(366004)(376002)(396003)(346002)(39860400002)(189003)(199004)(33656002)(7110500001)(14454004)(186003)(66066001)(54906003)(25786009)(53936002)(26005)(2420400007)(15650500001)(64756008)(66446008)(54896002)(236005)(66556008)(790700001)(6116002)(8936002)(9326002)(81156014)(99286004)(5660300002)(7736002)(102836004)(3846002)(36756003)(450100002)(68736007)(606006)(81166006)(478600001)(71200400001)(71190400001)(66946007)(4326008)(486006)(316002)(55236004)(6506007)(476003)(6486002)(2616005)(14444005)(58126008)(256004)(86362001)(6436002)(91956017)(76116006)(2906002)(66476007)(6512007)(8676002)(6306002)(969003)(989001)(999001)(1009001)(1019001); DIR:OUT; SFP:1101; SCL:1; SRVR:BYAPR04MB6021; H:BYAPR04MB4663.namprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1;
received-spf: None (protection.outlook.com: ciena.com does not designate permitted sender hosts)
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam-message-info: YJIuoZ3WSpz86RIj5aeLFOPN/ap2SGYkN4vvb/lzOF/pHiZHfN1z1w35E+k1jOHzPYwKg/BBkJo+7/+559sfhZGGACxrirnCGguiGvAJ30SlGwzBbg1a4+LDpVd5Bg7u2Wp44IQCWOsyps5CpAnUNxZE6NFKbHrJGpdU+UoyG1kJinwj1UfOEZ+8msbn7stZs4GlCCMPKLgBX22PKQQ1/RLZ50KnVjjjuRIJp5RrDhpMHozncvs0xOSgk1ZJYU6T8JJDDDJ8x7slFGnrcuSxspKU2+9wBIGRdSDwRh3QIjZ9YDr3zeOeasXzqKiUFXudpWdnAWE4fNFidTIes4voImq08lKiO/ElYNQTjXizjpbBtbBYVT2togUe3XYdzOyxSgXsRQlPAEgbb22e00n5z4f2SnC+bGJ1Tqh37ig++aE=
Content-Type: multipart/alternative; boundary="_000_E14C9916FE094CA385C7441DDE658524cienacom_"
MIME-Version: 1.0
X-OriginatorOrg: ciena.com
X-MS-Exchange-CrossTenant-Network-Message-Id: edc3a681-e2d3-4f01-2412-08d70be8c297
X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Jul 2019 01:31:01.9079 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 457a2b01-0019-42ba-a449-45f99e96b60a
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: hshah@ciena.com
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR04MB6021
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:5.22.84,1.0.8 definitions=2019-07-19_01:2019-07-18,2019-07-19 signatures=0
X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 impostorscore=0 malwarescore=0 phishscore=0 clxscore=1011 priorityscore=1501 adultscore=0 spamscore=0 bulkscore=0 mlxlogscore=999 mlxscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1904300001 definitions=main-1907190015
Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/MHNCHVZxvqyfKPsH1O9N83lgHHk>
Subject: [Idr] [RTG-DIR] RtgDir review : draft-ietf-idr-bgp-extended-messages-33.txt
X-BeenThere: idr@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Inter-Domain Routing <idr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/idr>, <mailto:idr-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/idr/>
List-Post: <mailto:idr@ietf.org>
List-Help: <mailto:idr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/idr>, <mailto:idr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 19 Jul 2019 01:31:08 -0000

Hello,

I have been selected as the Routing Directorate reviewer for this draft.
The Routing Directorate seeks to review all routing or routing-related
drafts as they pass through IETF last call and IESG review, and
sometimes on special request. The purpose of the review is to provide
assistance to the Routing ADs. For more information about the Routing
Directorate, please see
​http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir

Although these comments are primarily for the use of the Routing ADs, it
would be helpful if you could consider them along with any other IETF
Last Call comments that you receive, and strive to resolve them through
discussion or by updating the draft.

Document: draft-ietf-idr-bgp-extended-messages-33.txt
Reviewer: Himanshu Shah
Review Date: 18 July 2019
IETF LC End Date: Unknown
Intended Status: Standards Track

Summary:

I have some suggestions to improve the document by adding more context to the goal of this draft.

Comments:

The document is concise, clear and easy to read.

Since this is my first review as Routing directorate, the suggestions I have,
could be out-of-scope. Will leave at the discretion of AD and authors, if suggestions are worth pursuing or not.

While Introduction section briefly mentions newer capabilities as the reason for extended
message size for the BGP, it may help the reader to expand on the advantages of extended message
as compared to current limitation of 4K BGP messages.  For me, subsequent reading of the
document as it underlines the migration, error cases and security risks, the advantages of
extended message size seems to dissipate.

I also suggest that authors address issue of extended delay at the receiver in processing of large size BGP
messages while TCP’s reliable transport is building a complete message under challenging
network conditions and compare that against smaller messages in distressed network.

In my view, making a strong case on why extended message size, would greatly add value.

 Major Issues:

No major issues found.

Minor Issues:

No minor issues found. Please note the suggestion in the comment section above.

Nits:

None.



Thanks,
Himanshu