Re: [GROW] Genart last call review of draft-ietf-grow-bgp-gshut-11

Jay Borkenhagen <jayb@braeburn.org> Tue, 10 October 2017 14:58 UTC

Return-Path: <jayb@oz.mt.att.com>
X-Original-To: grow@ietfa.amsl.com
Delivered-To: grow@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A9141134E34; Tue, 10 Oct 2017 07:58:32 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.619
X-Spam-Level:
X-Spam-Status: No, score=-2.619 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01] autolearn=ham autolearn_force=no
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 qk0bZhkOFBGZ; Tue, 10 Oct 2017 07:58:22 -0700 (PDT)
Received: from mx0a-00191d01.pphosted.com (mx0a-00191d01.pphosted.com [67.231.149.140]) (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 E55F5134E2F; Tue, 10 Oct 2017 07:57:38 -0700 (PDT)
Received: from pps.filterd (m0053301.ppops.net [127.0.0.1]) by mx0a-00191d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v9AEuIvt004148; Tue, 10 Oct 2017 10:57:37 -0400
Received: from alpi154.enaf.aldc.att.com (sbcsmtp6.sbc.com [144.160.229.23]) by mx0a-00191d01.pphosted.com with ESMTP id 2dh0ccg4ge-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 10 Oct 2017 10:57:37 -0400
Received: from enaf.aldc.att.com (localhost [127.0.0.1]) by alpi154.enaf.aldc.att.com (8.14.5/8.14.5) with ESMTP id v9AEvYYs004942; Tue, 10 Oct 2017 10:57:36 -0400
Received: from alpi134.aldc.att.com (alpi134.aldc.att.com [130.8.217.4]) by alpi154.enaf.aldc.att.com (8.14.5/8.14.5) with ESMTP id v9AEvSsD004785 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 10 Oct 2017 10:57:31 -0400
Received: from alpi153.aldc.att.com (alpi153.aldc.att.com [130.8.42.31]) by alpi134.aldc.att.com (RSA Interceptor); Tue, 10 Oct 2017 14:57:15 GMT
Received: from aldc.att.com (localhost [127.0.0.1]) by alpi153.aldc.att.com (8.14.5/8.14.5) with ESMTP id v9AEvFRa008024; Tue, 10 Oct 2017 10:57:15 -0400
Received: from oz.mt.att.com (oz.mt.att.com [135.16.165.23]) by alpi153.aldc.att.com (8.14.5/8.14.5) with ESMTP id v9AEv3md006539; Tue, 10 Oct 2017 10:57:06 -0400
Received: by oz.mt.att.com (Postfix, from userid 1000) id 1FEFAA409A9; Tue, 10 Oct 2017 10:57:03 -0400 (EDT)
X-Mailer: emacs 24.3.1 (via feedmail 11-beta-1 I); VM 8.2.0b under 24.3.1 (x86_64-pc-linux-gnu)
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Message-ID: <23004.57272.805376.170272@oz.mt.att.com>
Date: Tue, 10 Oct 2017 10:56:56 -0400
From: Jay Borkenhagen <jayb@braeburn.org>
To: David Farmer <farmer@umn.edu>
Cc: bruno.decraene@orange.com, "draft-ietf-grow-bgp-gshut.all@ietf.org" <draft-ietf-grow-bgp-gshut.all@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>, "gen-art@ietf.org" <gen-art@ietf.org>, Job Snijders <job@ntt.net>, Matthew Miller <linuxwolf+ietf@outer-planes.net>, "grow@ietf.org" <grow@ietf.org>
In-Reply-To: <CAN-Dau3dEB+t92xTUKO5dEr3c+cPcRYY5jfoj_fv4DBjtJDPtA@mail.gmail.com>
References: <150759929173.18515.8831141207586025582@ietfa.amsl.com> <2413_1507629407_59DC995F_2413_449_1_53C29892C857584299CBF5D05346208A478A8FE2@OPEXCLILM21.corporate.adroot.infra.ftgroup> <20171010100621.GA75071@Vurt.local> <26657_1507635694_59DCB1EE_26657_410_1_53C29892C857584299CBF5D05346208A478A9426@OPEXCLILM21.corporate.adroot.infra.ftgroup> <20171010115957.GC75071@Vurt.local> <19198_1507638810_59DCBE1A_19198_120_1_53C29892C857584299CBF5D05346208A478A9745@OPEXCLILM21.corporate.adroot.infra.ftgroup> <CAN-Dau3dEB+t92xTUKO5dEr3c+cPcRYY5jfoj_fv4DBjtJDPtA@mail.gmail.com>
Reply-To: Jay Borkenhagen <jayb@braeburn.org>
X-GPG-Fingerprint: DDDB 542E D988 94D0 82D3 D198 7DED 6648 2308 D3C0
X-RSA-Inspected: yes
X-RSA-Classifications: public
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-10-10_04:, , signatures=0
X-Proofpoint-Spam-Details: rule=outbound_policy_notspam policy=outbound_policy score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1034 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1710100211
Archived-At: <https://mailarchive.ietf.org/arch/msg/grow/b9vnOdsSn1SHtTR6b3mTQqFZHjU>
Subject: Re: [GROW] Genart last call review of draft-ietf-grow-bgp-gshut-11
X-BeenThere: grow@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: Grow Working Group Mailing List <grow.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/grow>, <mailto:grow-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/grow/>
List-Post: <mailto:grow@ietf.org>
List-Help: <mailto:grow-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/grow>, <mailto:grow-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 10 Oct 2017 14:58:33 -0000

David Farmer writes:
 > I would prefer a normative RECOMMENDED, the rest of the sentence in
 > RFC2119, just means you should explain the constraints on the alternatives.
 > How about something like this;
 > 
 > "The LOCAL_PREF value SHOULD be lower than any of the alternative
 > paths.  A LOCAL_PREF
 > value of Zero is RECOMMENDED, however any LOCAL_PREF value lower than all
 > other LOCAL_PREF values used within an AS is an acceptable alternative.
 > The LOCAL_PREF value used, Zero or otherwise, SHOULD NOT also
 > have another use or meaning within the AS."
 > 


The LOCAL_PREF choice here is a simple thing -- don't make it more
complicated than it needs to be.

Job's suggested text says all that's necessary:

    "The LOCAL_PREF value SHOULD be lower than any of the alternative
    paths.  Zero being the lowest value, it MAY be used whichever
    LOCAL_PREF values are used by the AS."


Thanks.

						Jay B.