IETF Logo Mail Archive

Re: [Lsr] Regd covering BGP-LS extensions for IGP ELC drafts

Jeff Tantsura <jefftant.ietf@gmail.com> Thu, 25 July 2019 22:59 UTC

Return-Path: <jefftant.ietf@gmail.com>
X-Original-To: lsr@ietfa.amsl.com
Delivered-To: lsr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A7B281201D1; Thu, 25 Jul 2019 15:59:11 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.997
X-Spam-Level:
X-Spam-Status: No, score=-1.997 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.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 1ns6wRO-7ALr; Thu, 25 Jul 2019 15:59:09 -0700 (PDT)
Received: from mail-qt1-x82f.google.com (mail-qt1-x82f.google.com [IPv6:2607:f8b0:4864:20::82f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C86761202C0; Thu, 25 Jul 2019 15:59:08 -0700 (PDT)
Received: by mail-qt1-x82f.google.com with SMTP id d23so50809431qto.2; Thu, 25 Jul 2019 15:59:08 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version; bh=JaoLbk4KEajAedpUQd5Hcv4KImvhk/A+zQf1r3jcQQY=; b=cegpByCPkT/b7uSyISdvL+XeQk64YMs1fAT2WrLyolSYNRb61N8iq3kBw7RjqGAmsj 2NfGGT7a2oPOSIyiEhSYELL4D/ibp06majregeXlZyMhMvcoqHSaPb7oly6CnlbPrL0q acq/Hv3IeDJZZaf1f0amZHbTvtcygqB2SEDAMKFvbjZEmSKzkSJe3cUVnULw3hnVqJnS I30uHL4up4gkeXz9WKwTH4+ACxBEyVHYTJkCe5zefbxnWJGAGv6CFKOBRfWjFTSLtbtG qarBOKLqWp6g2h8jHqYLdwq9iyO4V/IlpH1ew804K1TZVB408VyyeKg2gazTMM6uw1jF lhMg==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:message-id:in-reply-to :references:subject:mime-version; bh=JaoLbk4KEajAedpUQd5Hcv4KImvhk/A+zQf1r3jcQQY=; b=e2QdPZtkcXLU0UuSRkmyFfoYxXYIuOkj60SlfrXWh/6cqrgkEu3hKCQb/lb9OwhzOE dNM8N09GatWoDDKc/ZP2w6osB9QvXp4aVm0bwnYzvZWlvHk55qGk9NkG6T2Ly8XqnSxq oghEWSrQBcdrMtVZOjckPk1aSHf2IDFHh45p1dXoPIxDT8XQSmyNRDjeEB+JTx1TcLo4 CHArVOBdYshOjNtfwrpYTjSjMdmOYKv82Rh/FBcE0I4YbMu1pcCjP35+4KlSw3ijptR5 lmrtw2qGN/ZlBXNQgezOtVBARqLjDnlHSTYHv586Eeiz2aAJnex7km1IXzeg6gZJAfwa YCSg==
X-Gm-Message-State: APjAAAVgLL35ZmBW9hDH7q2yOlboq2ixZi3J2RNSlsjcey01Z0/B5KhH 0rnyrvugCxyAtvNJVABcTLk=
X-Google-Smtp-Source: APXvYqwGQ3u/pM3yQQw/tdIJlDkCAaRO6xBJU9cLAMVXTWXMIUsVEcWbZu6eIhNtIgjJxhAXZURoqw==
X-Received: by 2002:ac8:26c8:: with SMTP id 8mr63557051qtp.308.1564095547911; Thu, 25 Jul 2019 15:59:07 -0700 (PDT)
Received: from [2001:67c:370:1999:2083:8e8c:ff7f::] ([2001:67c:370:1999:7d7c:407e:9fd9:dda9]) by smtp.gmail.com with ESMTPSA id l6sm21527564qkc.89.2019.07.25.15.59.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 25 Jul 2019 15:59:07 -0700 (PDT)
Date: Thu, 25 Jul 2019 18:58:59 -0400
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, "lsr@ietf.org" <lsr@ietf.org>, "Ketan Talaulikar (ketant)" <ketant@cisco.com>
Cc: "idr@ietf.org" <idr@ietf.org>, "draft-ietf-idr-bgp-ls-segment-routing-rld@ietf.org" <draft-ietf-idr-bgp-ls-segment-routing-rld@ietf.org>
Message-ID: <52ca8b65-1edf-4f5d-9958-cab3e7393fd3@Spark>
In-Reply-To: <DM5PR11MB20275193C3594D11F683734AC1C10@DM5PR11MB2027.namprd11.prod.outlook.com>
References: <DM5PR11MB20275193C3594D11F683734AC1C10@DM5PR11MB2027.namprd11.prod.outlook.com>
X-Readdle-Message-ID: 52ca8b65-1edf-4f5d-9958-cab3e7393fd3@Spark
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="5d3a3439_26f2d364_12dc6"
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/smzgovOUXd89_2gHCm2ia-1qx5U>
Subject: Re: [Lsr] Regd covering BGP-LS extensions for IGP ELC drafts
X-BeenThere: lsr@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Link State Routing Working Group <lsr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/lsr>, <mailto:lsr-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/lsr/>
List-Post: <mailto:lsr@ietf.org>
List-Help: <mailto:lsr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/lsr>, <mailto:lsr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 25 Jul 2019 22:59:12 -0000

+1 Ketan

Cheers,
Jeff
On Jul 25, 2019, 6:43 PM -0400, Ketan Talaulikar (ketant) <ketant@cisco.com>, wrote:
> Hi Acee/All,
>
> During the LSR WG meeting on Monday, we talked about covering the BGP-LS aspects of the following two IGP drafts in those drafts instead of requiring a separate document:
>
> https://datatracker.ietf.org/doc/draft-ietf-isis-mpls-elc/
> https://datatracker.ietf.org/doc/draft-ietf-ospf-mpls-elc/
>
> Originally, these IGP drafts introduced a new node capability that required a new BGP-LS TLV and this was captured in the IDR WG document https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-ls-segment-routing-rld/
>
> However after the discussion in the LSR WG over the last few months, the approach has changed such that the IGP signalling is being done by introduction of new flags and MSD-type. This makes the corresponding BGP-LS updates quite trivial and as discussed in the LSR WG, I would recommend to add some text (proposed below) to the two IGP documents.
>
> OSPF:
> The OSPF extensions defined in this document can be advertised via BGP-LS [RFC7752] using existing BGP-LS TLVs. The flags field of the OSPFv2 Extended Prefix TLV and the OSPFv3 PrefixOptions where the ELC Flag introduced in this document is advertised using the Prefix Attribute Flags TLV (TLV 1170) of the BGP-LS IPv4/IPv6 Prefix NLRI Attribute [https://tools.ietf.org/html/draft-ietf-idr-bgp-ls-segment-routing-ext-16#section-2.3.2]. The new ERLD MSD-type introduced for OSPF by this document is advertised using the Node MSD TLV (TLV 266) of BGP-LS Node NLRI Attribute [https://tools.ietf.org/html/draft-ietf-idr-bgp-ls-segment-routing-msd-05#section-3].
>
> ISIS:
> The IS-IS extensions defined in this document can be advertised via BGP-LS [RFC7752] using existing BGP-LS TLVs. The Prefix Attribute Flags sub-TLV where the ELC Flag is introduced in this document is advertised using the Prefix Attribute Flags TLV (TLV 1170) of the BGP-LS IPv4/IPv6 Prefix NLRI Attribute [https://tools.ietf.org/html/draft-ietf-idr-bgp-ls-segment-routing-ext-16#section-2.3.2]. The new ERLD MSD-type introduced for IS-IS by this document is advertised using the Node MSD TLV (TLV 266) of BGP-LS Node NLRI Attribute [https://tools.ietf.org/html/draft-ietf-idr-bgp-ls-segment-routing-msd-05#section-3].
>
> I am copying the IDR WG and authors of the BGP-LS ERLD draft as well for their inputs/feedback.
>
> Thanks,
> Ketan
>
> From: Lsr <lsr-bounces@ietf.org> On Behalf Of Acee Lindem (acee)
> Sent: 25 July 2019 16:28
> To: lsr@ietf.org
> Subject: [Lsr] IETF 105 LSR Working Group Meeting Minutes
>
> I think we had some very good discussions in our sessions this week. I’ve uploaded the minutes for the both LSR sessions on Monday. Thanks much to Yingzhen Qu for taking them.
>
> https://datatracker.ietf.org/meeting/105/materials/minutes-105-lsr-00
>
> Thanks,
> Acee
>
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr

v2.23.0 | Report a Bug | By Email