IETF Logo Mail Archive

[Bier] IPA replace BAR - inconsistency across documents

benjamin r <benjamin.r@huawei.com> Wed, 27 February 2019 13:46 UTC

Return-Path: <benjamin.r@huawei.com>
X-Original-To: bier@ietfa.amsl.com
Delivered-To: bier@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3A07B130EC5 for <bier@ietfa.amsl.com>; Wed, 27 Feb 2019 05:46:16 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.199
X-Spam-Level:
X-Spam-Status: No, score=-4.199 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] 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 aaL0DZLppKhS for <bier@ietfa.amsl.com>; Wed, 27 Feb 2019 05:46:14 -0800 (PST)
Received: from huawei.com (lhrrgout.huawei.com [185.176.76.210]) (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 F155E124C04 for <bier@ietf.org>; Wed, 27 Feb 2019 05:46:13 -0800 (PST)
Received: from lhreml703-cah.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 913F292E0F188E2F9509 for <bier@ietf.org>; Wed, 27 Feb 2019 13:46:11 +0000 (GMT)
Received: from DGGEML401-HUB.china.huawei.com (10.3.17.32) by lhreml703-cah.china.huawei.com (10.201.108.44) with Microsoft SMTP Server (TLS) id 14.3.408.0; Wed, 27 Feb 2019 13:46:10 +0000
Received: from DGGEML532-MBX.china.huawei.com ([169.254.8.249]) by DGGEML401-HUB.china.huawei.com ([fe80::89ed:853e:30a9:2a79%31]) with mapi id 14.03.0415.000; Wed, 27 Feb 2019 21:46:02 +0800
From: benjamin r <benjamin.r@huawei.com>
To: "bier@ietf.org" <bier@ietf.org>
Thread-Topic: IPA replace BAR - inconsistency across documents
Thread-Index: AdTOotA95OxTkkv3TdShHlaztj+aew==
Date: Wed, 27 Feb 2019 13:46:01 +0000
Message-ID: <0F70AB4850DED443831FABD19947F6A57EFEEDBA@DGGEML532-MBX.china.huawei.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-originating-ip: [10.18.150.197]
Content-Type: multipart/related; boundary="_004_0F70AB4850DED443831FABD19947F6A57EFEEDBADGGEML532MBXchi_"; type="multipart/alternative"
MIME-Version: 1.0
X-CFilter-Loop: Reflected
Archived-At: <https://mailarchive.ietf.org/arch/msg/bier/2dWsiAFbeV2movH3_LfxoZk3Cw8>
Subject: [Bier] IPA replace BAR - inconsistency across documents
X-BeenThere: bier@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "\"Bit Indexed Explicit Replication discussion list\"" <bier.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/bier>, <mailto:bier-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/bier/>
List-Post: <mailto:bier@ietf.org>
List-Help: <mailto:bier-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/bier>, <mailto:bier-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 27 Feb 2019 13:46:16 -0000

Hi All,

draft-ietf-bier-bar-ipa-03 states "If BA is not NULL, AG is set to BA."
This means, BAR take precedence over IPA.
This statement is conflicting with the OSPF/ISIS RFCs, which states IPA replaces path calculation defined by BAR value.

Excerpts from rfc8444 - Section 2.1.

   IPA:  Single-octet IGP Algorithm used to either modify, enhance, or
      replace the calculation of underlay paths to reach other BFRs as
      defined by the BAR value.  Values are defined in the "IGP
      Algorithm Types" registry [IANA-IGP].

Excerpts from rfc8401 - Section 6.1.

IPA: IGP Algorithm. Specifies an IGP Algorithm to either modify,
enhance, or replace the calculation of underlay paths to reach
BFERs as defined by the BAR value. Values are from the IGP
Algorithm registry. 1 octet.

To avoid confusions, can we update the texts in rfc8444 and rfc8401 to align with draft-ietf-bier-bar-ipa-03 ?


Thanks
Benjamin R
VRP PDU, Network Business Line
Huawei Technologies India Pvt. Ltd.
Survey No. 37, Next to EPIP Area, Kundalahalli, Whitefield
Bengaluru-560066, Karnataka
Tel: + 91-80-49160700 Ext II Mob: 8123906320 Email: benjamin.r@huawei.com<mailto:benjamin.r@huawei.com>
[Company_logo]


________________________________

This e-mail and its attachments contain confidential information from HUAWEI, which
is intended only for the person or entity whose address is listed above. Any use of the
information contained herein in any way (including, but not limited to, total or partial
disclosure, reproduction, or dissemination) by persons other than the intended
recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by
phone or email immediately and delete it!

v2.23.0 | Report a Bug | By Email