From nobody Fri Feb 1 04:04:40 2019 Return-Path: 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 9C682127B4C for ; Fri, 1 Feb 2019 04:04:38 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, 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 U8mOAb4w9s9X for ; Fri, 1 Feb 2019 04:04:36 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id 88ECC12DF72 for ; Fri, 1 Feb 2019 04:04:36 -0800 (PST) Received: from tops.chopps.org (47-50-69-38.static.klmz.mi.charter.com [47.50.69.38]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPS id DF71E6048F; Fri, 1 Feb 2019 07:04:35 -0500 (EST) User-agent: mu4e 1.1.0; emacs 26.1 From: Christian Hopps To: "lsr\@ietf.org" Cc: chopps@chopps.org Date: Fri, 01 Feb 2019 07:04:35 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Archived-At: Subject: [Lsr] Flooding Reduction Draft Redux X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 12:04:39 -0000 --=-=-= Content-Type: text/plain; format=flowed We've had the authors of the individual conflicting drafts take a shot at merging their work. This has failed. Here is the full history (which I also summarized during IETF103 as well). I will send a second email discussing this. - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynamic-flooding-isis published centralized solution. - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc-ospf-flooding-reduction published distributed solution. - mention of centralized solution asserting it is not good choice. - IETF 101 (Mar 2018) - Video: https://www.youtube.com/watch?v=qHmT4ytMn4w&list=PLC86T-6ZTP5j_HaBNdfPbgxGIp22cnaWS - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-101-lsr-00 - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 - Generally well received. - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. - Serious problems immediately found during presentation -- not fully baked. - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. - Does not specify distributed algorithm only how to indicate one in use, small change. - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published - IETF 102 (Jul 14, 2018) - draft-li-dynamic-flooding-05 presented. - draft-cc-ospf-flooding-reduction-02 presented. - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) - IETF 103 (Nov 3, 2018) - Chairs give direction - draft-li-lsr-dynamic-flooding-05 having come first, being well written and not specifying a distributed algorithm (merely allowing for one) is the correct vehicle to adopt as a base document. - Distributed algorithm work (the original basis for draft-cc-ospf-flooding-reduction) should continue as a separate document form the base which would thus we have no conflicts. - In the meantime the authors try and merge work, this fails. - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxUNdMACgkQLh2DDte4 MCV95Q/9FsbgsjmLx1F0MNZJQwJPfJO/KdZIkFocbIs4cPNnJ7SzC+lMPy9txRfz kC0FveUMu2RGGeQgZQmMclT5G5TU7wgXWgg/NwCBHOJ3bzx5ZZIquWMdSJNDRnjI eOf+TFdoDLRlVLYLEVqifd1iooCjfz/BpFYs3FDfeMSEFFOaEWSJcZmsqcaMNstm bu3N/S0z9YpPHc0BpaegAaq0gy9o5d86yhfrqxwSYLuk7QS5q9rIBfUyQl4xsUf+ fpwgohoCRyXWGcyAeedCO2W4F7+P7nU2koDTyYNf1Wnh1r2d9TN0BSdoPZZHqgev ds1wP2QVFZysSPQs4DNh0yMnkGcW8rYkdmYMty4jYG9jdmmo30OrMB3VtgnZojJW /ea1vw6mNfXZSW+JD4IwoNkPypaNqPAvRa/kjF36ILZ6V2NYhrLRgVwElQVo/MWm 8i8ksUqgWf7I25WG69FjjHoYDcrxrpUEUQ0PeIdjFAomTRZBQsq4Q4xl8xsqRzxX BaA30DQeDBDavTiPRaTgB5NJd372qzIGO/SmtQAs8fGDRFAKAYOrQKkBiO53q1NN 36zTP58foclFk9vuneszO1lC7ULB9Td5AIPdzxhmchpiX/1tei0qKFgwV59bXK40 Km1pCgZgch4M+QIBtNe2qjW/oKums80bIXKanW+/2wWX3BMk3lE= =Yjsz -----END PGP SIGNATURE----- --=-=-=-- From nobody Fri Feb 1 04:26:03 2019 Return-Path: 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 74FDE127133 for ; Fri, 1 Feb 2019 04:26:01 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, 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 8TrXViVLxHfU for ; Fri, 1 Feb 2019 04:25:59 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id 433AE126C7E for ; Fri, 1 Feb 2019 04:25:59 -0800 (PST) Received: from tops.chopps.org (47-50-69-38.static.klmz.mi.charter.com [47.50.69.38]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPS id 9B2766048F; Fri, 1 Feb 2019 07:25:58 -0500 (EST) References: User-agent: mu4e 1.1.0; emacs 26.1 From: Christian Hopps To: "lsr\@ietf.org" Cc: chopps@chopps.org In-reply-to: Date: Fri, 01 Feb 2019 07:25:57 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Archived-At: Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 12:26:01 -0000 --=-=-= Content-Type: text/plain; format=flowed Summary of where we are at with dynamic flooding reduction: - We have a well written original work that came first and described the problems as well as a TLVs to allow for a centralized solution (draft-li-dyanmic-flooding). We do not need to standardize the centralized algorithm. - A small change to this work allowed for distributed algorithms and for outside work on distributed algorithms to continue in parallel. - We have another original work that started primarily as a distributed algorithm (draft-cc-ospf-flooding-reduction) - Finally we also have: - Cross-pollination of ideas. - Failed attempts at merging. - An authors list "Arms-Race". Moving forward: - During IETF 103 I proposed we have no conflict if we: 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. 2) have authors of draft-cc-lsr-flooding-reduction work on a distributed algorithm as they started with. - Acee agreed during the meeting (as chair) that this was the best way forward. We had some agreement form the floor as well. - Any good ideas regarding the distribution of a centralized topology can be debated and added (with appropriate attribution) to the base document after we adopt one. - This is what happens when we adopt a document as WG work, we work on it. - The original authors of the distributed solution can continue to work on their distributed algorithm in a separate document which would also need standardization. Does anyone see a serious problem with this path forward? Thanks, Chris & Acee. LSR Chairs. Christian Hopps writes: > We've had the authors of the individual conflicting drafts take a shot at merging their work. > > This has failed. > > Here is the full history (which I also summarized during IETF103 as well). I will send a second email discussing this. > > - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynamic-flooding-isis > published centralized solution. > > - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc-ospf-flooding-reduction > published distributed solution. > - mention of centralized solution asserting it is not good choice. > > - IETF 101 (Mar 2018) > - Video: https://www.youtube.com/watch?v=qHmT4ytMn4w&list=PLC86T-6ZTP5j_HaBNdfPbgxGIp22cnaWS > - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-101-lsr-00 > - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > - Generally well received. > - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > - Serious problems immediately found during presentation -- not fully baked. > > - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) > - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) > - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised > - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) > - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. > - Does not specify distributed algorithm only how to indicate one in use, small change. > > - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published > > - IETF 102 (Jul 14, 2018) > - draft-li-dynamic-flooding-05 presented. > - draft-cc-ospf-flooding-reduction-02 presented. > > - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) > - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. > > - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) > > - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) > > - IETF 103 (Nov 3, 2018) > > - Chairs give direction > > - draft-li-lsr-dynamic-flooding-05 having come first, being well written and not > specifying a distributed algorithm (merely allowing for one) is the correct vehicle > to adopt as a base document. > > - Distributed algorithm work (the original basis for draft-cc-ospf-flooding-reduction) > should continue as a separate document form the base which would thus we have no > conflicts. > > - In the meantime the authors try and merge work, this fails. > > - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) > > - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) > > - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxUOtUACgkQLh2DDte4 MCVf7BAAlW0AfmEWyT1oRNRlqIyaeVcShPhENVnkPI8U3NxlUQAFhawXQ7pEb4n+ vg1Samgo+ZQlYdcTKSSRSLOWRLYtmZ50tiioFqSsuIBUUnZAFBGFsB+CityxVSah dt8W8wIqPVBF7cBaZsVgfW+ItSL+uFjhbX7KYE0gnFnJFF1vaJql+Eh7/KRd3xFX rYPqIGDzvm5VjimFrxAV4Ox+J035J4ho/c6JsSywRbil62Jxs/eYmiL664Y69w0I dfE1pTW7QBXlEgP26PaObAPKkaXx8wNMiimMZTqK/9yoGpW1T7+TERBrOOB1mLPR XEfxr4acRu3zOlnNvIbMirOReYAaOlc9/7C4BW8s2795+r/X5nBVh+n4AOJGSCc1 Vd+7+wofI/+PJz+80RBP4aDDhD3kP50mfgkjR3PuQpdjIEBUvXfY5mozMSHKANLg ChzBeIZKExinxMh18rpL67gM7WRxf1yuZVh7tVo2GIxjdRjfXdjoJ4YCt87kpCbA Rbh18C5URoEw5/QnS4T7FNq0ZpxiWOVsjfVxgwUsue4zwlzNR4POub9cHzj0uEkM rOzGKTnpSFPN8L5Dman/Lik426zOlrbml322elOKfbb0mW44odzPjGQz+NuNl512 VIaxUyABrXiA7ZjD6IYwk+y0ntR8sj8LnO1pixxYroD2BSd9+eY= =/29T -----END PGP SIGNATURE----- --=-=-=-- From nobody Fri Feb 1 05:18:23 2019 Return-Path: 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 9488C130ED8 for ; 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DIR:OUT; SFP:1102; SCL:1; SRVR:BYAPR05MB4278; H:BYAPR05MB5029.namprd05.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: juniper.net does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: fy7nKUNQQskHvDT6EOtlTbxNzy+sEQw69Islb5KIMZmKvZet8KJLusmnrJ+7bb59YqYloJOE6HVVEqCQsqOGlieCQ/G56U81NbbGeM1HoB2UJdsIIMDWaxJ+/6KOu6891dtyYqrEm1Qh8SZAzsJC350eNl/WZTCf42M+75ll+qzKpxFRZyjVQZLK9J193wikrhyLrEB8RwbqLJn6G1zm3TpJNjKAJ2DDFESyb1Eml3PXNDdoHQNNXpNL4Oy2Vm2tz2f9lGk8Xan2oPG7FU2S7GvlG9OIwRfpq3Ql7jBvHuTaGjp84i87l5FlRxRrrajQB2KQrABUkw9NhqguJk8Po41tImrZBenRd8l/IRIEKiFI0jhxVbhI76wYoemlRDE5ISajkKNdQhNLFHE3lCEtUBl8/p/wTx47Hq1w/b4QEZc= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: juniper.net X-MS-Exchange-CrossTenant-Network-Message-Id: 7a833205-8ae0-44d4-436b-08d68847ba3c X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Feb 2019 13:18:16.6730 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: bea78b3c-4cdb-4130-854a-1d193232e5f4 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR05MB4278 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-02-01_09:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902010101 Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 13:18:22 -0000 Chris & Acee, This looks fine to me. Yours Irrespectively, John > -----Original Message----- > From: Lsr On Behalf Of Christian Hopps > Sent: Friday, February 1, 2019 7:26 AM > To: lsr@ietf.org > Cc: chopps@chopps.org > Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] >=20 >=20 > Summary of where we are at with dynamic flooding reduction: >=20 > - We have a well written original work that came first and described the > problems as well as a TLVs to allow for a centralized solution (draft-li-= dyanmic- > flooding). We do not need to standardize the centralized algorithm. >=20 > - A small change to this work allowed for distributed algorithms and for= outside > work on distributed algorithms to continue in parallel. >=20 > - We have another original work that started primarily as a distributed = algorithm > (draft-cc-ospf-flooding-reduction) >=20 > - Finally we also have: > - Cross-pollination of ideas. > - Failed attempts at merging. > - An authors list "Arms-Race". >=20 > Moving forward: >=20 > - During IETF 103 I proposed we have no conflict if we: >=20 > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > 2) have authors of draft-cc-lsr-flooding-reduction work on a distribut= ed > algorithm as they started with. >=20 > - Acee agreed during the meeting (as chair) that this was the best way fo= rward. > We had some agreement form the floor as well. >=20 > - Any good ideas regarding the distribution of a centralized topology can= be > debated and added (with appropriate attribution) to the base document aft= er we > adopt one. >=20 > - This is what happens when we adopt a document as WG work, we work on it= . >=20 > - The original authors of the distributed solution can continue to work o= n their > distributed algorithm in a separate document which would also need > standardization. >=20 > Does anyone see a serious problem with this path forward? >=20 > Thanks, > Chris & Acee. > LSR Chairs. >=20 > Christian Hopps writes: >=20 > > We've had the authors of the individual conflicting drafts take a shot = at > merging their work. > > > > This has failed. > > > > Here is the full history (which I also summarized during IETF103 as wel= l). I will > send a second email discussing this. > > > > - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynam= ic- > flooding-isis > > published centralized solution. > > > > - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-c= c-ospf- > flooding-reduction > > published distributed solution. > > - mention of centralized solution asserting it is not good choice. > > > > - IETF 101 (Mar 2018) > > - Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T- > 6ZTP5j_HaBNdfPbgxGIp22cnaWS > > - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes= -101- > lsr-00 > > - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > > - Generally well received. > > - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > > - Serious problems immediately found during presentation -- not ful= ly baked. > > > > - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) > > - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) > > - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised > > - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) > > - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. > > - Does not specify distributed algorithm only how to indicate one in = use, small > change. > > > > - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published > > > > - IETF 102 (Jul 14, 2018) > > - draft-li-dynamic-flooding-05 presented. > > - draft-cc-ospf-flooding-reduction-02 presented. > > > > - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) > > - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. > > > > - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) > > > > - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) > > > > - IETF 103 (Nov 3, 2018) > > > > - Chairs give direction > > > > - draft-li-lsr-dynamic-flooding-05 having come first, being well wr= itten and > not > > specifying a distributed algorithm (merely allowing for one) is t= he correct > vehicle > > to adopt as a base document. > > > > - Distributed algorithm work (the original basis for draft-cc-ospf-= flooding- > reduction) > > should continue as a separate document form the base which would = thus > we have no > > conflicts. > > > > - In the meantime the authors try and merge work, this fails. > > > > - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) > > > > - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) > > > > - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) From nobody Fri Feb 1 07:46:21 2019 Return-Path: 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 2DA64130E2F for ; 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[73.158.115.137]) by smtp.gmail.com with ESMTPSA id g87sm5419712pfe.43.2019.02.01.07.46.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 01 Feb 2019 07:46:14 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) From: Tony Li In-Reply-To: Date: Fri, 1 Feb 2019 07:46:12 -0800 Cc: Christian Hopps , "lsr@ietf.org" Content-Transfer-Encoding: quoted-printable Message-Id: <2CD5C590-5AD0-4B99-8081-7FC1310172A8@gmail.com> References: To: John E Drake X-Mailer: Apple Mail (2.3445.102.3) Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 15:46:18 -0000 +1 Tony > On Feb 1, 2019, at 5:18 AM, John E Drake wrote: >=20 > Chris & Acee, >=20 > This looks fine to me. >=20 > Yours Irrespectively, >=20 > John >=20 >> -----Original Message----- >> From: Lsr On Behalf Of Christian Hopps >> Sent: Friday, February 1, 2019 7:26 AM >> To: lsr@ietf.org >> Cc: chopps@chopps.org >> Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] >>=20 >>=20 >> Summary of where we are at with dynamic flooding reduction: >>=20 >> - We have a well written original work that came first and described = the >> problems as well as a TLVs to allow for a centralized solution = (draft-li-dyanmic- >> flooding). We do not need to standardize the centralized algorithm. >>=20 >> - A small change to this work allowed for distributed algorithms and = for outside >> work on distributed algorithms to continue in parallel. >>=20 >> - We have another original work that started primarily as a = distributed algorithm >> (draft-cc-ospf-flooding-reduction) >>=20 >> - Finally we also have: >> - Cross-pollination of ideas. >> - Failed attempts at merging. >> - An authors list "Arms-Race". >>=20 >> Moving forward: >>=20 >> - During IETF 103 I proposed we have no conflict if we: >>=20 >> 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. >> 2) have authors of draft-cc-lsr-flooding-reduction work on a = distributed >> algorithm as they started with. >>=20 >> - Acee agreed during the meeting (as chair) that this was the best = way forward. >> We had some agreement form the floor as well. >>=20 >> - Any good ideas regarding the distribution of a centralized topology = can be >> debated and added (with appropriate attribution) to the base document = after we >> adopt one. >>=20 >> - This is what happens when we adopt a document as WG work, we work = on it. >>=20 >> - The original authors of the distributed solution can continue to = work on their >> distributed algorithm in a separate document which would also need >> standardization. >>=20 >> Does anyone see a serious problem with this path forward? >>=20 >> Thanks, >> Chris & Acee. >> LSR Chairs. >>=20 >> Christian Hopps writes: >>=20 >>> We've had the authors of the individual conflicting drafts take a = shot at >> merging their work. >>>=20 >>> This has failed. >>>=20 >>> Here is the full history (which I also summarized during IETF103 as = well). I will >> send a second email discussing this. >>>=20 >>> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and = drfat-li-dynamic- >> flooding-isis >>> published centralized solution. >>>=20 >>> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and = draft-cc-ospf- >> flooding-reduction >>> published distributed solution. >>> - mention of centralized solution asserting it is not good choice. >>>=20 >>> - IETF 101 (Mar 2018) >>> - Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-= >> 6ZTP5j_HaBNdfPbgxGIp22cnaWS >>> - Minutes: = https://datatracker.ietf.org/meeting/101/materials/minutes-101- >> lsr-00 >>> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 >>> - Generally well received. >>> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. >>> - Serious problems immediately found during presentation -- not = fully baked. >>>=20 >>> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) >>> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) >>> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised >>> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) >>> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. >>> - Does not specify distributed algorithm only how to indicate one = in use, small >> change. >>>=20 >>> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published >>>=20 >>> - IETF 102 (Jul 14, 2018) >>> - draft-li-dynamic-flooding-05 presented. >>> - draft-cc-ospf-flooding-reduction-02 presented. >>>=20 >>> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) >>> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. >>>=20 >>> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) >>>=20 >>> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) >>>=20 >>> - IETF 103 (Nov 3, 2018) >>>=20 >>> - Chairs give direction >>>=20 >>> - draft-li-lsr-dynamic-flooding-05 having come first, being well = written and >> not >>> specifying a distributed algorithm (merely allowing for one) is = the correct >> vehicle >>> to adopt as a base document. >>>=20 >>> - Distributed algorithm work (the original basis for = draft-cc-ospf-flooding- >> reduction) >>> should continue as a separate document form the base which = would thus >> we have no >>> conflicts. >>>=20 >>> - In the meantime the authors try and merge work, this fails. >>>=20 >>> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) >>>=20 >>> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) >>>=20 >>> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) >=20 > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr From nobody Fri Feb 1 07:49:47 2019 Return-Path: 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 7D6A6130E2F for ; 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Fri, 1 Feb 2019 15:49:36 +0000 From: David Allan I To: "chopps@chopps.org" , "lsr@ietf.org" Thread-Topic: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Thread-Index: AQHUuild2HfHOEnYcU+M2RHxiCR/TqXLFw2g Date: Fri, 1 Feb 2019 15:49:36 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=david.i.allan@ericsson.com; x-originating-ip: [198.24.6.220] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; MN2PR15MB2608; 6:EYU/5qU8R70KeTudGWhCOqirHiR/DhhoCb/TTCty8oh4ZFel3JZ7Bl5m4gafnxCvEK3LXNr0LuqzNAk5nn/s5XB6u+AN38Sg40q695Brk1tNS3gn3ELREGDqOF4hRT8mZTvNtmTciwcxyMIuzPoPsToXfCbbB1ADiboBOTgIHqinUgHZqKYWR4yl7QiS4U9XRTz8yWM45m5axlUEKrntGBLgLMsmpuWaujM7JNXPrnd4BUubJqycFz+DmGDhB5dKfWmC7UH2mOSSF+xHRSLgT5pVT+cvEfyzWR0GQxW6EdUNozLSsy3fY6RHLJwiW2I/3NPIlHxUk/7n2FjGH2bLG6pelE6G9qWqNg9kMt1F5NZYtx1I7gpM02dU7FFtMuU0W7vOOjCRWaJqtvPXYjg7HpD6nlBYTxm1o1Ox/uj/RGlQK01jniX9Nhd3iC8IaovOWzycRsn6OTJdXIEzchhW1A==; 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DIR:OUT; SFP:1101; SCL:1; SRVR:MN2PR15MB2608; H:MN2PR15MB3439.namprd15.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: ericsson.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: KR22lA2gWkR4I1MmCLqJQtJHQqXt16ugQkRGXQupwYUWqLay2a0a+dk8xUXiN+l2OLNl0N5qNCdcOBllXZFRDONhfQZ6q6cKbzKkC9TSa3d8VRbT2/BTWgKtobdlQHAg768TjkzYk8E74SDSieZFaNLVUDPw2mlprvBxPlxKEl/4tsAqHDXytf71Vbxe4AA+IPjfIHRjK61PijQnN0Jh8bR70FRFJWso5ck05CEPQFNe56QJeEIORb5TBuVnoYkCbVEEHd7nHXfuM6pp2zMPo9QuIPsZVPFCxfwI4P+5wFm96HZd8NG2b69zLpdG7+CICxalSZo3SaAI6jjYmorYv/z3nll9435LYxwzrNEKK3a+G9FvtW9QuBksnVifcBKaFoZB9kVOTH6OPtC2FH5oD/E8wztYG7nR84pf2W9nAmE= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: f14374a2-094a-4eab-288c-08d6885cddfe X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Feb 2019 15:49:36.0902 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 92e84ceb-fbfd-47ab-be52-080c6b87953f X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR15MB2608 X-OriginatorOrg: ericsson.com X-Brightmail-Tracker: H4sIAAAAAAAAA02SfUhTURjGOffebXej0XFpe1kZMgxM82sYSNgXUUmhFBhGKbbyonM69d4l af9MYRQzcTgQ/Egdkwo/QCzUUFGX0/zISirRnKGOwkTFSjRWmttd0H+/8zzP+77nPRyalBkF Clqj0zOsTp2tFEqoqmud+vCKrKSUqA1zZGzlswEy9pXrqeA0ET/ntBHxjY2/iMvEdUlcOpOt KWDYyJM3JZkDLdVE3lDw3ZnVTsqA2gJNSEwDjoGVb21CE5LQMjyIYGveIfQYMryBwDZ+hTds BCz0zYg8BwqbSSgbXqR4p4KAR5/HEF8yj8BtUXhYiKOgZ+enV/fHF6F4rV9gQjS9D5+HDhPL yxfgdfdbEc8qsNc+8TKFg8H6o8bLUpwCawvFFN/+HExZOggPi/ER6Omr9zLC+2FztMXLJJbD jIvXAWNo7HlD8hwAS4vbAj6fCgsOg5DXg2D0gwHxHAiT9aXIsxfgEhE41ud8oQQYd7b6jGkE g/3Tvgmh8PL9BMWzFh6MuH2dDkLXllPEF0wIoMZaR/IrMPCk1egLHYKmsnnKjMKq/7s5z0eh ofu7kOcweGxdJqu9r+EHI1UuqgFRTSiAY7hbORkqVQTDam5zXK4uQsfo29Hu5xh47o7qQktf z9gRppFyj1R+KilFJlAXcIU5dgQ0qfSXcjd2JWm6urCIYXPT2DvZDGdHB2hKKZf+lvmlyHCG Ws9oGSaPYf+5BC1WGFCypXll9l7y8JTiT1abNajEqRkqsnS3xIkfvls91h6wITEHa1fr6sqN Lo1sMEQYI00cmzw8q9+WL0cbIr/okaNUlJg43tvpv3LCneYXvontTRrpp/tVYXMSQa9h+9Ly 3mlteb5NVXk8fidE/oK6uv4xtVBgrBWfzUzIVzRrlRSXqY4OJVlO/RfkvMp3GAMAAA== Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 15:49:46 -0000 Agreed Cheers Dave -----Original Message----- From: Lsr On Behalf Of Christian Hopps Sent: Friday, February 1, 2019 4:26 AM To: lsr@ietf.org Cc: chopps@chopps.org Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Summary of where we are at with dynamic flooding reduction: - We have a well written original work that came first and described the p= roblems as well as a TLVs to allow for a centralized solution (draft-li-dya= nmic-flooding). We do not need to standardize the centralized algorithm. - A small change to this work allowed for distributed algorithms and for o= utside work on distributed algorithms to continue in parallel. - We have another original work that started primarily as a distributed al= gorithm (draft-cc-ospf-flooding-reduction) - Finally we also have: - Cross-pollination of ideas. - Failed attempts at merging. - An authors list "Arms-Race". Moving forward: - During IETF 103 I proposed we have no conflict if we: 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. 2) have authors of draft-cc-lsr-flooding-reduction work on a distributed= algorithm as they started with. - Acee agreed during the meeting (as chair) that this was the best way forw= ard. We had some agreement form the floor as well. - Any good ideas regarding the distribution of a centralized topology can b= e debated and added (with appropriate attribution) to the base document aft= er we adopt one. - This is what happens when we adopt a document as WG work, we work on it. - The original authors of the distributed solution can continue to work on = their distributed algorithm in a separate document which would also need st= andardization. Does anyone see a serious problem with this path forward? Thanks, Chris & Acee. LSR Chairs. Christian Hopps writes: > We've had the authors of the individual conflicting drafts take a shot at= merging their work. > > This has failed. > > Here is the full history (which I also summarized during IETF103 as well)= . I will send a second email discussing this. > > - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynamic= -flooding-isis > published centralized solution. > > - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc-= ospf-flooding-reduction > published distributed solution. > - mention of centralized solution asserting it is not good choice. > > - IETF 101 (Mar 2018) > - Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6Z= TP5j_HaBNdfPbgxGIp22cnaWS > - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-1= 01-lsr-00 > - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > - Generally well received. > - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > - Serious problems immediately found during presentation -- not fully= baked. > > - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) > - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) > - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised > - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) > - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. > - Does not specify distributed algorithm only how to indicate one in us= e, small change. > > - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published > > - IETF 102 (Jul 14, 2018) > - draft-li-dynamic-flooding-05 presented. > - draft-cc-ospf-flooding-reduction-02 presented. > > - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) > - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. > > - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) > > - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) > > - IETF 103 (Nov 3, 2018) > > - Chairs give direction > > - draft-li-lsr-dynamic-flooding-05 having come first, being well writ= ten and not > specifying a distributed algorithm (merely allowing for one) is the= correct vehicle > to adopt as a base document. > > - Distributed algorithm work (the original basis for draft-cc-ospf-fl= ooding-reduction) > should continue as a separate document form the base which would th= us we have no > conflicts. > > - In the meantime the authors try and merge work, this fails. > > - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) > > - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) > > - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) From nobody Fri Feb 1 07:51:23 2019 Return-Path: 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 50474130E6B for ; 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d=cisco.com; i=@cisco.com; l=4776; q=dns/txt; s=iport; t=1549036279; x=1550245879; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=ZOONU3Uv4hJkrmtOkewUizb39Pu70dVdSncVeqFaPJ8=; b=OEMtk8L5OVWOdteZLA02gBQEUNTseJ5Ct0qvU1BdnYgZdCt3A3oXLwm8 gIz3RPEEzec7OQF07rLKLilfh1KCMKe+DyQJOB+MFkbmLwb1Bm4nJQKoi W7fyhqRQ9oJIfQE1ZEq3qdZPDIEtUQLFm+H4iYJQxxXYhPqcz+kegT89L 0=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AFAABWalRc/xbLJq1kGgEBAQEBAgE?= =?us-ascii?q?BAQEHAgEBAQGBUQUBAQEBCwGCalABIBInjB1fjHQIJZgOFIFnDRgNhEcCgzM?= =?us-ascii?q?0CQ0BAwEBAgEBAm0cDIVLAQEBAwEBNjYbCw4KLicwBgEMBgIBAReDBwGCAQ+?= =?us-ascii?q?qXoQuAQMCAoENhG4FjFeBQD+BOAyCX4MeAQECAReBFAESAYV/AolrhwaBEYU?= =?us-ascii?q?Ki1sJhzCLAAYZikKHfooghS+MLIFGOGVxMxoIGxU7gmyGCoUUhUA+AzCKWII?= =?us-ascii?q?+AQE?= X-IronPort-AV: E=Sophos;i="5.56,549,1539648000"; d="scan'208";a="9749556" Received: from aer-iport-nat.cisco.com (HELO aer-core-4.cisco.com) ([173.38.203.22]) by aer-iport-3.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Feb 2019 15:51:16 +0000 Received: from [10.60.140.54] (ams-ppsenak-nitro5.cisco.com [10.60.140.54]) by aer-core-4.cisco.com (8.15.2/8.15.2) with ESMTP id x11FpF0F009290; Fri, 1 Feb 2019 15:51:16 GMT To: Christian Hopps , "lsr@ietf.org" References: From: Peter Psenak Message-ID: Date: Fri, 1 Feb 2019 16:51:15 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.60.140.54, ams-ppsenak-nitro5.cisco.com X-Outbound-Node: aer-core-4.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 15:51:22 -0000 Hi Chris, sounds good to me. thanks, Peter On 01/02/2019 13:25 , Christian Hopps wrote: > > Summary of where we are at with dynamic flooding reduction: > > - We have a well written original work that came first and described the > problems as well as a TLVs to allow for a centralized solution > (draft-li-dyanmic-flooding). We do not need to standardize the > centralized algorithm. > > - A small change to this work allowed for distributed algorithms and for > outside work on distributed algorithms to continue in parallel. > > - We have another original work that started primarily as a distributed > algorithm > (draft-cc-ospf-flooding-reduction) > > - Finally we also have: > - Cross-pollination of ideas. > - Failed attempts at merging. > - An authors list "Arms-Race". > > Moving forward: > > - During IETF 103 I proposed we have no conflict if we: > > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > 2) have authors of draft-cc-lsr-flooding-reduction work on a > distributed algorithm as they started with. > > - Acee agreed during the meeting (as chair) that this was the best way > forward. We had some agreement form the floor as well. > > - Any good ideas regarding the distribution of a centralized topology > can be debated and added (with appropriate attribution) to the base > document after we adopt one. > > - This is what happens when we adopt a document as WG work, we work on it. > > - The original authors of the distributed solution can continue to work > on their distributed algorithm in a separate document which would also > need standardization. > > Does anyone see a serious problem with this path forward? > > Thanks, > Chris & Acee. > LSR Chairs. > > Christian Hopps writes: > >> We've had the authors of the individual conflicting drafts take a shot >> at merging their work. >> >> This has failed. >> >> Here is the full history (which I also summarized during IETF103 as >> well). I will send a second email discussing this. >> >> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and >> drfat-li-dynamic-flooding-isis >> published centralized solution. >> >> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and >> draft-cc-ospf-flooding-reduction >> published distributed solution. >> - mention of centralized solution asserting it is not good choice. >> >> - IETF 101 (Mar 2018) >> - Video: >> https://www.youtube.com/watch?v=qHmT4ytMn4w&list=PLC86T-6ZTP5j_HaBNdfPbgxGIp22cnaWS >> >> - Minutes: >> https://datatracker.ietf.org/meeting/101/materials/minutes-101-lsr-00 >> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 >> - Generally well received. >> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. >> - Serious problems immediately found during presentation -- not >> fully baked. >> >> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) >> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) >> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised >> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) >> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. >> - Does not specify distributed algorithm only how to indicate one in >> use, small change. >> >> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published >> >> - IETF 102 (Jul 14, 2018) >> - draft-li-dynamic-flooding-05 presented. >> - draft-cc-ospf-flooding-reduction-02 presented. >> >> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) >> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. >> >> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) >> >> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) >> >> - IETF 103 (Nov 3, 2018) >> >> - Chairs give direction >> >> - draft-li-lsr-dynamic-flooding-05 having come first, being well >> written and not >> specifying a distributed algorithm (merely allowing for one) is >> the correct vehicle >> to adopt as a base document. >> >> - Distributed algorithm work (the original basis for >> draft-cc-ospf-flooding-reduction) >> should continue as a separate document form the base which would >> thus we have no >> conflicts. >> >> - In the meantime the authors try and merge work, this fails. >> >> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) >> >> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) >> >> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > From nobody Fri Feb 1 07:54:12 2019 Return-Path: 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 35D81130E76; Fri, 1 Feb 2019 07:54:11 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 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SJCEML701-CHM.china.huawei.com ([169.254.3.31]) with mapi id 14.03.0415.000; Fri, 1 Feb 2019 07:53:59 -0800 From: Huaimo Chen To: "tony.li@tony.li" CC: "Van De Velde, Gunter (Nokia - BE/Antwerp)" , "lsr@ietf.org" , Yingzhen Qu , Christian Hopps , "draft-li-lsr-dynamic-flooding@ietf.org" , Alvaro Retana , "draft-cc-lsr-flooding-reduction@ietf.org" Thread-Topic: [Lsr] Comments regarding convergence regarding draft-cc-lsr-flooding-reduction and draft-li-lsr-dynamic-flooding Thread-Index: AdSz/FEDV1gXhhlyTJuIwqwhTB9x7gDHOM9AAE9heIAAe9tFwA== Date: Fri, 1 Feb 2019 15:53:58 +0000 Message-ID: <5316A0AB3C851246A7CA5758973207D463B3B5F7@sjceml521-mbx.china.huawei.com> References: <5316A0AB3C851246A7CA5758973207D463B3A32F@sjceml521-mbx.china.huawei.com> <0FE21364-D23A-4CFE-8559-A9125EC01E77@tony.li> In-Reply-To: <0FE21364-D23A-4CFE-8559-A9125EC01E77@tony.li> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.212.247.178] Content-Type: 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RCVD_IN_DNSWL_HI=-5, 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 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 eCnCjdncs0NN for ; Fri, 1 Feb 2019 08:02:39 -0800 (PST) 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 81650130EDE for ; Fri, 1 Feb 2019 08:02:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=4994; q=dns/txt; s=iport; t=1549036958; x=1550246558; h=from:to:subject:date:message-id:references:in-reply-to: content-transfer-encoding:mime-version; bh=c/Scqpn6AAdaY4J0EHAHKuUM6z/5N66RTUvhKElcdHg=; b=CD19MaoqIIm5c2TmBTiQNi2zDJg+5ILYptZuhj7vLYHP6XUkCUZe3W5R S7683mVKMn46oPhIIqG7lBMAj18r6QeENSUhU0B1QGAmKdVVDYoI6OBCy HNgTJFHbvf9UOSqq3gcDBSGAUL+2AMidRhfgyANc308Tjz99zedaaKNTS I=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0ADAAAjbVRc/4ENJK1kGQEBAQEBAQE?= =?us-ascii?q?BAQEBAQcBAQEBAQGBUQQBAQEBAQsBggNngQMnCowTi3OCDZgOFIFnCwEBI4R?= =?us-ascii?q?JAoMRIjQJDQEDAQECAQECbRwMhUoBAQEBAzpLBAIBCA4DBAEBHxAyHQgCBAE?= =?us-ascii?q?SCBODCIIBD6phhC4BhgEFjEAXgUA/hCODHgICAReBFAESAYV/AolriBeFCot?= =?us-ascii?q?bCQKHLop+IZJAiiCFL4wFAhEUgScfOGVxcBU7gmyGCoUUhT9BMYpYgR+BHwE?= =?us-ascii?q?B?= X-IronPort-AV: E=Sophos;i="5.56,549,1539648000"; d="scan'208";a="233867997" Received: from alln-core-9.cisco.com ([173.36.13.129]) by alln-iport-5.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Feb 2019 16:02:37 +0000 Received: from XCH-ALN-005.cisco.com (xch-aln-005.cisco.com [173.36.7.15]) by alln-core-9.cisco.com (8.15.2/8.15.2) with ESMTPS id x11G2asa005304 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Fri, 1 Feb 2019 16:02:37 GMT Received: from xch-aln-001.cisco.com (173.36.7.11) by XCH-ALN-005.cisco.com (173.36.7.15) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 1 Feb 2019 10:02:36 -0600 Received: from xch-aln-001.cisco.com ([173.36.7.11]) by XCH-ALN-001.cisco.com ([173.36.7.11]) with mapi id 15.00.1395.000; Fri, 1 Feb 2019 10:02:36 -0600 From: "Les Ginsberg (ginsberg)" To: Christian Hopps , "lsr@ietf.org" Thread-Topic: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Thread-Index: AQHUuilUQNpyPXkEuUWPo/7QhgsxnKXLGpNA Date: Fri, 1 Feb 2019 16:02:36 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.24.18.23] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Outbound-SMTP-Client: 173.36.7.15, xch-aln-005.cisco.com X-Outbound-Node: alln-core-9.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 16:02:42 -0000 I am in favor of this proposal. Les > -----Original Message----- > From: Lsr On Behalf Of Christian Hopps > Sent: Friday, February 01, 2019 4:26 AM > To: lsr@ietf.org > Cc: chopps@chopps.org > Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] >=20 >=20 > Summary of where we are at with dynamic flooding reduction: >=20 > - We have a well written original work that came first and described the > problems as well as a TLVs to allow for a centralized solution (draft-li- > dyanmic-flooding). We do not need to standardize the centralized algorith= m. >=20 > - A small change to this work allowed for distributed algorithms and for > outside work on distributed algorithms to continue in parallel. >=20 > - We have another original work that started primarily as a distributed > algorithm > (draft-cc-ospf-flooding-reduction) >=20 > - Finally we also have: > - Cross-pollination of ideas. > - Failed attempts at merging. > - An authors list "Arms-Race". >=20 > Moving forward: >=20 > - During IETF 103 I proposed we have no conflict if we: >=20 > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > 2) have authors of draft-cc-lsr-flooding-reduction work on a distribut= ed > algorithm as they started with. >=20 > - Acee agreed during the meeting (as chair) that this was the best way > forward. We had some agreement form the floor as well. >=20 > - Any good ideas regarding the distribution of a centralized topology can= be > debated and added (with appropriate attribution) to the base document > after we adopt one. >=20 > - This is what happens when we adopt a document as WG work, we work on > it. >=20 > - The original authors of the distributed solution can continue to work o= n > their distributed algorithm in a separate document which would also need > standardization. >=20 > Does anyone see a serious problem with this path forward? >=20 > Thanks, > Chris & Acee. > LSR Chairs. >=20 > Christian Hopps writes: >=20 > > We've had the authors of the individual conflicting drafts take a shot = at > merging their work. > > > > This has failed. > > > > Here is the full history (which I also summarized during IETF103 as wel= l). I > will send a second email discussing this. > > > > - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynam= ic- > flooding-isis > > published centralized solution. > > > > - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-c= c-ospf- > flooding-reduction > > published distributed solution. > > - mention of centralized solution asserting it is not good choice. > > > > - IETF 101 (Mar 2018) > > - Video: > https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T- > 6ZTP5j_HaBNdfPbgxGIp22cnaWS > > - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes= - > 101-lsr-00 > > - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > > - Generally well received. > > - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > > - Serious problems immediately found during presentation -- not ful= ly > baked. > > > > - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) > > - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) > > - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised > > - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) > > - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. > > - Does not specify distributed algorithm only how to indicate one in = use, > small change. > > > > - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published > > > > - IETF 102 (Jul 14, 2018) > > - draft-li-dynamic-flooding-05 presented. > > - draft-cc-ospf-flooding-reduction-02 presented. > > > > - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) > > - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. > > > > - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) > > > > - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) > > > > - IETF 103 (Nov 3, 2018) > > > > - Chairs give direction > > > > - draft-li-lsr-dynamic-flooding-05 having come first, being well wr= itten > and not > > specifying a distributed algorithm (merely allowing for one) is t= he correct > vehicle > > to adopt as a base document. > > > > - Distributed algorithm work (the original basis for draft-cc-ospf-= flooding- > reduction) > > should continue as a separate document form the base which would > thus we have no > > conflicts. > > > > - In the meantime the authors try and merge work, this fails. > > > > - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) > > > > - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) > > > > - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) From nobody Fri Feb 1 08:39:01 2019 Return-Path: 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 E753D13103D for ; Fri, 1 Feb 2019 08:38:41 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 trlzIIWyIAJt for ; Fri, 1 Feb 2019 08:38:39 -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 151ED130FDA for ; Fri, 1 Feb 2019 08:38:39 -0800 (PST) Received: from lhreml704-cah.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id 0D4D74B88851B742CFB1 for ; Fri, 1 Feb 2019 16:38:37 +0000 (GMT) Received: from SJCEML703-CHM.china.huawei.com (10.208.112.39) by lhreml704-cah.china.huawei.com (10.201.108.45) with Microsoft SMTP Server (TLS) id 14.3.408.0; Fri, 1 Feb 2019 16:38:36 +0000 Received: from SJCEML521-MBX.china.huawei.com ([169.254.1.96]) by SJCEML703-CHM.china.huawei.com ([169.254.5.115]) with mapi id 14.03.0415.000; Fri, 1 Feb 2019 08:38:30 -0800 From: Huaimo Chen To: Christian Hopps , "lsr@ietf.org" Thread-Topic: [Lsr] Flooding Reduction Draft Redux Thread-Index: AQHUuiZg/aECIki+eEec/5k6oND0u6XLIDBQ Date: Fri, 1 Feb 2019 16:38:30 +0000 Message-ID: <5316A0AB3C851246A7CA5758973207D463B3B6BA@sjceml521-mbx.china.huawei.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.212.247.178] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] Flooding Reduction Draft Redux X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 16:38:46 -0000 Hi Everyone, My comments are inline below with prefix [HC]. Best Regards, Huaimo -----Original Message----- From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of Christian Hopps Sent: Friday, February 1, 2019 7:05 AM To: lsr@ietf.org Cc: chopps@chopps.org Subject: [Lsr] Flooding Reduction Draft Redux We've had the authors of the individual conflicting drafts take a shot at m= erging their work. This has failed. Here is the full history (which I also summarized during IETF103 as well). = I will send a second email discussing this. - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynamic-= flooding-isis published centralized solution. - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc-o= spf-flooding-reduction published distributed solution. - mention of centralized solution asserting it is not good choice. - IETF 101 (Mar 2018) - Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6ZT= P5j_HaBNdfPbgxGIp22cnaWS - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-10= 1-lsr-00 - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 - Generally well received. - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. - Serious problems immediately found during presentation -- not fully = baked. [HC] All the problems have been resolved in our latest draft. Some people indicated that the distributed solution is better than the cent= ralized one. In addition, on the LSR mailing list, some people said that th= e distributed solution is more practical.=20 - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. - Does not specify distributed algorithm only how to indicate one in use= , small change. - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published - IETF 102 (Jul 14, 2018) - draft-li-dynamic-flooding-05 presented. - draft-cc-ospf-flooding-reduction-02 presented. - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) - IETF 103 (Nov 3, 2018) - Chairs give direction - draft-li-lsr-dynamic-flooding-05 having come first, being well writt= en and not specifying a distributed algorithm (merely allowing for one) is the = correct vehicle to adopt as a base document. [HC] Coming first and being well written are important. However, technical = merits or advantages are at least equally important.=20 - Distributed algorithm work (the original basis for draft-cc-ospf-flo= oding-reduction) should continue as a separate document form the base which would thu= s we have no conflicts. - In the meantime the authors try and merge work, this fails. - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) From nobody Fri Feb 1 09:02:43 2019 Return-Path: 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 2936113103A for ; Fri, 1 Feb 2019 09:02:42 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, 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 k1dIkapmeF7M for ; Fri, 1 Feb 2019 09:02:40 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id 4742D131025 for ; Fri, 1 Feb 2019 09:02:40 -0800 (PST) Received: from tops.chopps.org (47-50-69-38.static.klmz.mi.charter.com [47.50.69.38]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPS id 48425604AF; Fri, 1 Feb 2019 12:02:39 -0500 (EST) References: <5316A0AB3C851246A7CA5758973207D463B3B6BA@sjceml521-mbx.china.huawei.com> User-agent: mu4e 1.1.0; emacs 26.1 From: Christian Hopps To: Huaimo Chen Cc: Christian Hopps , "lsr\@ietf.org" In-reply-to: <5316A0AB3C851246A7CA5758973207D463B3B6BA@sjceml521-mbx.china.huawei.com> Date: Fri, 01 Feb 2019 12:02:38 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Archived-At: Subject: Re: [Lsr] Flooding Reduction Draft Redux X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 17:02:42 -0000 --=-=-= Content-Type: text/plain; format=flowed Huaimo Chen writes: > Hi Everyone, > > My comments are inline below with prefix [HC]. > > Best Regards, > - IETF 101 (Mar 2018) > - Video: https://www.youtube.com/watch?v=qHmT4ytMn4w&list=PLC86T-6ZTP5j_HaBNdfPbgxGIp22cnaWS > - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-101-lsr-00 > - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > - Generally well received. > - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > - Serious problems immediately found during presentation -- not fully baked. > > [HC] All the problems have been resolved in our latest draft. > Some people indicated that the distributed solution is better than the centralized one. In addition, on the LSR mailing list, some people said that the distributed solution is more practical. Great. And it makes sense to have a document dedicated to your distributed algorithm solution. That is the proposal I just put forward. > - draft-li-lsr-dynamic-flooding-05 having come first, being well written and not > specifying a distributed algorithm (merely allowing for one) is the correct vehicle > to adopt as a base document. > > [HC] Coming first and being well written are important. However, technical merits or advantages are at least equally important. Technical merits are very important, and we (the WG) should have discussions about and make any changes that might be needed to the centralized solution document -- once we adopt one. It only makes sense to adopt the original centralized solution work for working on the centralized solution -- especially since it's well written, and it came first. Thanks, Chris. --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxUe64ACgkQLh2DDte4 MCU2RxAAku6NQDnO6jKgOmlNQFoTzfF//ltfFGe30gcYPl/uGUqcgAGcgO6BuVOs qgdFrMb0J9D/VbAyipzWiOu9CrpQ5DJJDh9YntygD67sescBOPMCBlFH2Unnm7Ig lP4/ZUNt1t7kXIdI1BO16oP/Wu0ygUn01udMJPzkka3+j21T/oCHRJlXeHtyvuvR wTLcc3OtDwmD9fMUXo5zI0yf6si2pUWI2B07F0uYMYc0iy8SmhTUSQloaBlJiuPv 1wYlng6GYppZaIiJqS2al4UWVoE+XJ0SBR6ilMtL2nNysjTaITYUUUGGVmcl74dd 4NH0goThtp2LI65g7NIOeAw8QqCwDlJIuWqBYO3hQwjzrhBP9+tkfyIVOi9lC+yg xQOhJNE2jQ38jqraH41wdtMdYrizwnSthMT0Ic36epwA2fJCw9vceB/ZK+C/DDoQ apb2urQjhFCLYVDLDjh3yzXG7mW9mlZevQTDxKs9Y6tK5c84LFYYKl6mf9b2CzmP 8X5Ud41HLlAzC8TBKN9DwF+oTH+nEtXRirnofhc/qt4HxWnhqsmkJtbDZmqKfYuo dlTRBbcAK90BnjFDgbSpWP90DdrGUOQjT7wXjkxyq4pq4nwrOGxtUoVVbWwWdxM5 z2awHUe1CDDJYl65Sy69cjlNJHXw/KH5NMQS0rH34PuCsxW/Mzo= =1+CK -----END PGP SIGNATURE----- --=-=-=-- From nobody Fri Feb 1 14:44:13 2019 Return-Path: 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 EA24A130ECE for ; Fri, 1 Feb 2019 14:44:11 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -19.053 X-Spam-Level: X-Spam-Status: No, score=-19.053 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-4.553, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 gqFGcdrg8yyQ for ; Fri, 1 Feb 2019 14:44:09 -0800 (PST) Received: from rcdn-iport-6.cisco.com (rcdn-iport-6.cisco.com [173.37.86.77]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 51C6E130EBE for ; Fri, 1 Feb 2019 14:44:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=4866; q=dns/txt; s=iport; t=1549061049; x=1550270649; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=yb2QEe4rye7z5/f5m2RNsgUAng3G4qZfxK+I8bObZPs=; b=PjVi4Xp0WxdYxCMtjB5KOhgR493j09QRMcY+MlWluCCyb5BfGeZYvEpW xWcAXOvi6rUAVcWG4YlqosTWQ7+8q+CGfqm0ReuZaNIuC4T65+2yj3bms H08j/9Yuxk5hxLLUdRc8RMlm1QeVwSh4+8GqFem/YMIdcvfm1Ps14TjDv 0=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0ADAAC+ylRc/5NdJa1kGQEBAQEBAQE?= =?us-ascii?q?BAQEBAQcBAQEBAQGBUQQBAQEBAQsBggNngQMnCowTi3SCDZgOFIFnCwEBGA2?= =?us-ascii?q?ERwKDESI0CQ0BAwEBAgEBAm0cDIVKAQEBAQIBAQE4NAsFCwIBCA4KHhAnCyU?= =?us-ascii?q?CBA4FG4MHAYF5CA+qK4QuAQMCAoENhGcFjEAXgX+BOB+CTIMeAQECAReBFAE?= =?us-ascii?q?SAR+DOoImAolriBeFCotbCQKHLosGGZJAj0+MBQIRFIEnHzhlcXAVOyoBgkG?= =?us-ascii?q?GCoUUhT9BMYpsgR+BHwEB?= X-IronPort-AV: E=Sophos;i="5.56,549,1539648000"; d="scan'208";a="511996146" Received: from rcdn-core-11.cisco.com ([173.37.93.147]) by rcdn-iport-6.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Feb 2019 22:44:07 +0000 Received: from XCH-ALN-001.cisco.com (xch-aln-001.cisco.com [173.36.7.11]) by rcdn-core-11.cisco.com (8.15.2/8.15.2) with ESMTPS id x11Mi75J025786 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Fri, 1 Feb 2019 22:44:07 GMT Received: from xch-rcd-004.cisco.com (173.37.102.14) by XCH-ALN-001.cisco.com (173.36.7.11) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 1 Feb 2019 16:44:07 -0600 Received: from xch-rcd-004.cisco.com ([173.37.102.14]) by XCH-RCD-004.cisco.com ([173.37.102.14]) with mapi id 15.00.1395.000; Fri, 1 Feb 2019 16:44:06 -0600 From: "Naiming Shen (naiming)" To: Christian Hopps CC: "lsr@ietf.org" Thread-Topic: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Thread-Index: AQHUuilUz8L5eC2t3UmKUZY6fVsz6qXL74gA Date: Fri, 1 Feb 2019 22:44:06 +0000 Message-ID: <4D79F7C1-0A18-42B5-996B-61462C32C37E@cisco.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.156.165.51] Content-Type: text/plain; charset="us-ascii" Content-ID: <7E54E99CA4FB9841A14D09BBE8A6E6C6@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Outbound-SMTP-Client: 173.36.7.11, xch-aln-001.cisco.com X-Outbound-Node: rcdn-core-11.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 22:44:12 -0000 Support the proposal. Regards, - Naiming > On Feb 1, 2019, at 4:25 AM, Christian Hopps wrote: >=20 >=20 > Summary of where we are at with dynamic flooding reduction: >=20 > - We have a well written original work that came first and described the = problems as well as a TLVs to allow for a centralized solution (draft-li-dy= anmic-flooding). We do not need to standardize the centralized algorithm. >=20 > - A small change to this work allowed for distributed algorithms and for = outside work on distributed algorithms to continue in parallel. >=20 > - We have another original work that started primarily as a distributed a= lgorithm > (draft-cc-ospf-flooding-reduction) >=20 > - Finally we also have: > - Cross-pollination of ideas. > - Failed attempts at merging. > - An authors list "Arms-Race". >=20 > Moving forward: >=20 > - During IETF 103 I proposed we have no conflict if we: >=20 > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > 2) have authors of draft-cc-lsr-flooding-reduction work on a distributed= algorithm as they started with. >=20 > - Acee agreed during the meeting (as chair) that this was the best way fo= rward. We had some agreement form the floor as well. >=20 > - Any good ideas regarding the distribution of a centralized topology can= be debated and added (with appropriate attribution) to the base document a= fter we adopt one. >=20 > - This is what happens when we adopt a document as WG work, we work on it= . >=20 > - The original authors of the distributed solution can continue to work o= n their distributed algorithm in a separate document which would also need = standardization. >=20 > Does anyone see a serious problem with this path forward? >=20 > Thanks, > Chris & Acee. > LSR Chairs. >=20 > Christian Hopps writes: >=20 >> We've had the authors of the individual conflicting drafts take a shot a= t merging their work. >>=20 >> This has failed. >>=20 >> Here is the full history (which I also summarized during IETF103 as well= ). I will send a second email discussing this. >>=20 >> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynami= c-flooding-isis >> published centralized solution. >>=20 >> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc= -ospf-flooding-reduction >> published distributed solution. >> - mention of centralized solution asserting it is not good choice. >>=20 >> - IETF 101 (Mar 2018) >> - Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6Z= TP5j_HaBNdfPbgxGIp22cnaWS >> - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-1= 01-lsr-00 >> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 >> - Generally well received. >> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. >> - Serious problems immediately found during presentation -- not fully= baked. >>=20 >> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) >> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) >> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised >> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) >> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. >> - Does not specify distributed algorithm only how to indicate one in us= e, small change. >>=20 >> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published >>=20 >> - IETF 102 (Jul 14, 2018) >> - draft-li-dynamic-flooding-05 presented. >> - draft-cc-ospf-flooding-reduction-02 presented. >>=20 >> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) >> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. >>=20 >> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) >>=20 >> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) >>=20 >> - IETF 103 (Nov 3, 2018) >>=20 >> - Chairs give direction >>=20 >> - draft-li-lsr-dynamic-flooding-05 having come first, being well writ= ten and not >> specifying a distributed algorithm (merely allowing for one) is the= correct vehicle >> to adopt as a base document. >>=20 >> - Distributed algorithm work (the original basis for draft-cc-ospf-fl= ooding-reduction) >> should continue as a separate document form the base which would th= us we have no >> conflicts. >>=20 >> - In the meantime the authors try and merge work, this fails. >>=20 >> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) >>=20 >> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) >>=20 >> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) >=20 > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr From nobody Fri Feb 1 20:37:06 2019 Return-Path: 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 8E096130EB8 for ; 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[73.189.13.44]) by smtp.gmail.com with ESMTPSA id h185sm15123488pfg.143.2019.02.01.20.36.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 01 Feb 2019 20:36:59 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (1.0) From: Jeff Tantsura X-Mailer: iPhone Mail (16C101) In-Reply-To: Date: Fri, 1 Feb 2019 20:36:55 -0800 Cc: Christian Hopps , "lsr@ietf.org" Content-Transfer-Encoding: quoted-printable Message-Id: <7B821CEB-D4DC-456A-90D4-C4D7D0A186CF@gmail.com> References: To: "Les Ginsberg (ginsberg)" Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Feb 2019 04:37:05 -0000 In favor! Regards, Jeff > On Feb 1, 2019, at 08:02, Les Ginsberg (ginsberg) wro= te: >=20 > I am in favor of this proposal. >=20 > Les >=20 >> -----Original Message----- >> From: Lsr On Behalf Of Christian Hopps >> Sent: Friday, February 01, 2019 4:26 AM >> To: lsr@ietf.org >> Cc: chopps@chopps.org >> Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] >>=20 >>=20 >> Summary of where we are at with dynamic flooding reduction: >>=20 >> - We have a well written original work that came first and described the >> problems as well as a TLVs to allow for a centralized solution (draft-li-= >> dyanmic-flooding). We do not need to standardize the centralized algorith= m. >>=20 >> - A small change to this work allowed for distributed algorithms and for >> outside work on distributed algorithms to continue in parallel. >>=20 >> - We have another original work that started primarily as a distributed >> algorithm >> (draft-cc-ospf-flooding-reduction) >>=20 >> - Finally we also have: >> - Cross-pollination of ideas. >> - Failed attempts at merging. >> - An authors list "Arms-Race". >>=20 >> Moving forward: >>=20 >> - During IETF 103 I proposed we have no conflict if we: >>=20 >> 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. >> 2) have authors of draft-cc-lsr-flooding-reduction work on a distribute= d >> algorithm as they started with. >>=20 >> - Acee agreed during the meeting (as chair) that this was the best way >> forward. We had some agreement form the floor as well. >>=20 >> - Any good ideas regarding the distribution of a centralized topology can= be >> debated and added (with appropriate attribution) to the base document >> after we adopt one. >>=20 >> - This is what happens when we adopt a document as WG work, we work on >> it. >>=20 >> - The original authors of the distributed solution can continue to work o= n >> their distributed algorithm in a separate document which would also need >> standardization. >>=20 >> Does anyone see a serious problem with this path forward? >>=20 >> Thanks, >> Chris & Acee. >> LSR Chairs. >>=20 >> Christian Hopps writes: >>=20 >>> We've had the authors of the individual conflicting drafts take a shot a= t >> merging their work. >>>=20 >>> This has failed. >>>=20 >>> Here is the full history (which I also summarized during IETF103 as well= ). I >> will send a second email discussing this. >>>=20 >>> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynami= c- >> flooding-isis >>> published centralized solution. >>>=20 >>> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc= -ospf- >> flooding-reduction >>> published distributed solution. >>> - mention of centralized solution asserting it is not good choice. >>>=20 >>> - IETF 101 (Mar 2018) >>> - Video: >> https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T- >> 6ZTP5j_HaBNdfPbgxGIp22cnaWS >>> - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes- >> 101-lsr-00 >>> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 >>> - Generally well received. >>> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. >>> - Serious problems immediately found during presentation -- not fully= >> baked. >>>=20 >>> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) >>> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) >>> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised >>> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) >>> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. >>> - Does not specify distributed algorithm only how to indicate one in us= e, >> small change. >>>=20 >>> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published >>>=20 >>> - IETF 102 (Jul 14, 2018) >>> - draft-li-dynamic-flooding-05 presented. >>> - draft-cc-ospf-flooding-reduction-02 presented. >>>=20 >>> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) >>> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. >>>=20 >>> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) >>>=20 >>> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) >>>=20 >>> - IETF 103 (Nov 3, 2018) >>>=20 >>> - Chairs give direction >>>=20 >>> - draft-li-lsr-dynamic-flooding-05 having come first, being well writ= ten >> and not >>> specifying a distributed algorithm (merely allowing for one) is the= correct >> vehicle >>> to adopt as a base document. >>>=20 >>> - Distributed algorithm work (the original basis for draft-cc-ospf-fl= ooding- >> reduction) >>> should continue as a separate document form the base which would >> thus we have no >>> conflicts. >>>=20 >>> - In the meantime the authors try and merge work, this fails. >>>=20 >>> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) >>>=20 >>> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) >>>=20 >>> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) >=20 > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr From nobody Fri Feb 1 21:27:13 2019 Return-Path: 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 1DB7A128766 for ; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Everyone, We proposed the distributed solution first, and Tony proposed the centraliz= ed solution first. Tony added the distributed solution (except for the algo= rithms to compute flooding topology) into his draft. And then we added the = centralized solution into our draft. The latest versions of the two drafts = have largely converged at least at the high level to a solution for solving= the same problem. Our draft has multiple key technical advantages over Tony's draft as we des= cribed in our email to the LSR list, which are summarized below: 1. It uses a fraction of flooding resource (i.e., it is multiple times m= ore efficient in flooding topology encoding); 2. It provides fault tolerance to multiple failures, minimizing impact o= n network convergence, thus minimizing traffic lose; and 3. It is simpler and needs less processing time (i.e., faster and more e= fficient) in multiple scenarios. Based on the technical merits, our draft should be moved forward. However, = Chair proposed to move Tony's draft forward and have us work on a distribut= ed algorithm as we started with. I think that the distributed solution in Tony's draft needs to be removed a= nd they work on the centralized solution. We remove the centralized solutio= n from our draft and work on the distributed solution. Best Regards, Huaimo -----Original Message----- From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of Christian Hopps Sent: Friday, February 1, 2019 7:26 AM To: lsr@ietf.org Cc: chopps@chopps.org Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Summary of where we are at with dynamic flooding reduction: - We have a well written original work that came first and described the pr= oblems as well as a TLVs to allow for a centralized solution (draft-li-dyan= mic-flooding). We do not need to standardize the centralized algorithm. - A small change to this work allowed for distributed algorithms and for ou= tside work on distributed algorithms to continue in parallel. - We have another original work that started primarily as a distributed alg= orithm (draft-cc-ospf-flooding-reduction) - Finally we also have: - Cross-pollination of ideas. - Failed attempts at merging. - An authors list "Arms-Race". Moving forward: - During IETF 103 I proposed we have no conflict if we: 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. 2) have authors of draft-cc-lsr-flooding-reduction work on a distributed= algorithm as they started with. - Acee agreed during the meeting (as chair) that this was the best way forw= ard. We had some agreement form the floor as well. - Any good ideas regarding the distribution of a centralized topology can b= e debated and added (with appropriate attribution) to the base document aft= er we adopt one. - This is what happens when we adopt a document as WG work, we work on it. - The original authors of the distributed solution can continue to work on = their distributed algorithm in a separate document which would also need st= andardization. Does anyone see a serious problem with this path forward? Thanks, Chris & Acee. LSR Chairs. Christian Hopps writes: > We've had the authors of the individual conflicting drafts take a shot at= merging their work. > > This has failed. > > Here is the full history (which I also summarized during IETF103 as well)= . I will send a second email discussing this. > > - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynamic= -flooding-isis > published centralized solution. > > - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc-= ospf-flooding-reduction > published distributed solution. > - mention of centralized solution asserting it is not good choice. > > - IETF 101 (Mar 2018) > - Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6Z= TP5j_HaBNdfPbgxGIp22cnaWS > - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-1= 01-lsr-00 > - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > - Generally well received. > - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > - Serious problems immediately found during presentation -- not fully= baked. > > - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) > - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) > - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised > - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) > - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. > - Does not specify distributed algorithm only how to indicate one in us= e, small change. > > - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published > > - IETF 102 (Jul 14, 2018) > - draft-li-dynamic-flooding-05 presented. > - draft-cc-ospf-flooding-reduction-02 presented. > > - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) > - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. > > - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) > > - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) > > - IETF 103 (Nov 3, 2018) > > - Chairs give direction > > - draft-li-lsr-dynamic-flooding-05 having come first, being well writ= ten and not > specifying a distributed algorithm (merely allowing for one) is the= correct vehicle > to adopt as a base document. > > - Distributed algorithm work (the original basis for draft-cc-ospf-fl= ooding-reduction) > should continue as a separate document form the base which would th= us we have no > conflicts. > > - In the meantime the authors try and merge work, this fails. > > - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) > > - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) > > - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) --_000_5316A0AB3C851246A7CA5758973207D463B3B9D8sjceml521mbxchi_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Everyone,

 

We proposed the distr= ibuted solution first, and Tony proposed the centralized solution first. To= ny added the distributed solution (except for the algorithms to compute flooding topology) into his draft. And then we added= the centralized solution into our draft. The latest versions of the two dr= afts have largely converged at least at the high level to a solution for so= lving the same problem.

 

Our draft has multipl= e key technical advantages over Tony’s draft as we described in our e= mail to the LSR list, which are summarized below:

1.    It uses a fraction of flooding resource (i.e.= , it is multiple times more efficient in flooding topology encoding);<= /o:p>

2.    It provides fault tolerance to multiple failu= res, minimizing impact on network convergence, thus minimizing traffic lose= ; and

3.    It is simpler and needs less processing time = (i.e., faster and more efficient) in multiple scenarios.<= /p>

Based on the technica= l merits, our draft should be moved forward. However, Chair proposed to mov= e Tony’s draft forward and have us work on a distributed algorithm as we started with.

 

I think that the dist= ributed solution in Tony’s draft needs to be removed and they work on= the centralized solution. We remove the centralized solution from our draft and work on the distributed solution.

  

Best Regards,

Huaimo

 

-----Original Message-----

From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf= Of Christian Hopps

Sent: Friday, February 1, 2019 7:26 AM=

To: lsr@ietf.org

Cc: chopps@chopps.org

Subject: [Lsr] Moving Forward [Re: Flooding Reduc= tion Draft Redux]

 

 

Summary of where we are at with dynamic flooding = reduction:

 

- We have a well written original work that came = first and described the problems as well as a TLVs to allow for a centraliz= ed solution (draft-li-dyanmic-flooding). We do not need to standardize the = centralized algorithm.

 

- A small change to this work allowed for distrib= uted algorithms and for outside work on distributed algorithms to continue = in parallel.

 

- We have another original work that started prim= arily as a distributed algorithm

   (draft-cc-ospf-flooding-reduction)

 

- Finally we also have:

   - Cross-pollination of ideas.

   - Failed attempts at merging.

   - An authors list "Arms-Race&qu= ot;.

 

Moving forward:

 

- During IETF 103 I proposed we have no conflict = if we:

 

   1) adopt draft-li-lsr-dyanmic-floodi= ng as the base WG document.

   2) have authors of draft-cc-lsr-floo= ding-reduction work on a distributed algorithm as they started with.

 

- Acee agreed during the meeting (as chair) that = this was the best way forward. We had some agreement form the floor as well= .

 

- Any good ideas regarding the distribution of a = centralized topology can be debated and added (with appropriate attribution= ) to the base document after we adopt one.

 

- This is what happens when we adopt a document a= s WG work, we work on it.

 

- The original authors of the distributed solutio= n can continue to work on their distributed algorithm in a separate documen= t which would also need standardization.

 

Does anyone see a serious problem with this path = forward?

 

Thanks,

Chris & Acee.

LSR Chairs.

 

Christian Hopps <chopps@chopps.org> writes:=

 

> We've had the authors of the individual conf= licting drafts take a shot at merging their work.

> 

>    This has failed.

> 

> Here is the full history (which I also summa= rized during IETF103 as well). I will send a second email discussing this.<= o:p>

> 

> - Jan 2, 2018 Publication: draft-li-dynamic-= flooding and drfat-li-dynamic-flooding-isis

>   published centralized solution.<= o:p>

> 

> - Mar 5, 2018 Publication: draft-cc-isis-flo= oding-reduction and draft-cc-ospf-flooding-reduction

>   published distributed solution.<= o:p>

>   - mention of centralized solutio= n asserting it is not good choice.

> 

> - IETF 101 (Mar 2018)

>   - Video: https://www.youtube.com= /watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6ZTP5j_HaBNdfPbgxGIp22cnaWS

>   - Minutes: https://datatracker.i= etf.org/meeting/101/materials/minutes-101-lsr-00

>   - draft-li-dynamic-flooding-02 p= resented (1 author). at IETF 101

>     - Generally well rec= eived.

>   - draft-cc-ospf-flooding-reducti= on-00 (4 authors) presented.

>     - Serious problems i= mmediately found during presentation -- not fully baked.

> 

> - Mar 18, 2018 draft-li-dynamic-flooding-03 = published (1 author)

> - Mar 27, 2018 draft-li-dynamic-flooding-04 = published (1 author)

> - Apr 20, 2018 draft-cc-ospf-flooding-reduct= ion-01 revised

> - Jun 28, 2018 draft-li-dynamic-flooding-05 = published (2 authors)

>   - *SMALL CHANGE TO SUPPORT DISTR= IBUTED ALGORITHM*.

>   - Does not specify distributed a= lgorithm only how to indicate one in use, small change.

> 

> - Jul 2, 2018 draft-cc-ospf-flooding-reducti= on-02 published

> 

> - IETF 102 (Jul 14, 2018)

>   - draft-li-dynamic-flooding-05 p= resented.

>   - draft-cc-ospf-flooding-reducti= on-02 presented.

> 

> - Sep 12, 2018 draft-cc-ospf-flooding-reduct= ion-03 (4 authors)

>   - *LARGE CHANGE ADDS NEW CENTRAL= IZED SOLUTION*.

> 

> - Sep 20, 2018 draft-cc-ospf-flooding-reduct= ion-04 (4 authors)

> 

> - Oct 21, 2018 draft-li-lsr-dynamic-flooding= -00 and -01 (5 authors)

> 

> - IETF 103 (Nov 3, 2018)

> 

>   - Chairs give direction

> 

>     - draft-li-lsr-dynam= ic-flooding-05 having come first, being well written and not

>       specifyi= ng a distributed algorithm (merely allowing for one) is the correct vehicle=

>       to adopt= as a base document.

> 

>     - Distributed algori= thm work (the original basis for draft-cc-ospf-flooding-reduction)

>       should c= ontinue as a separate document form the base which would thus we have no

>       conflict= s.

> 

> - In the meantime the authors try and merge = work, this fails.

> 

> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-= 02 (7 authors)

> 

> - Dec 10, 2018 draft-cc-lsr-flooding-reducti= on-00 (4 authors)

> 

> - Jan 7, 2019  draft-cc-lsr-flooding-re= duction-01 (8 authors)

 

--_000_5316A0AB3C851246A7CA5758973207D463B3B9D8sjceml521mbxchi_-- From nobody Sat Feb 2 01:06:41 2019 Return-Path: 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 D6744130E95 for ; Sat, 2 Feb 2019 01:06:39 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-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 fEgON4hMWARG for ; Sat, 2 Feb 2019 01:06:36 -0800 (PST) Received: from m88102.mail.qiye.163.com (m88102.mail.qiye.163.com [106.2.88.102]) by ietfa.amsl.com (Postfix) with ESMTP id 163A31277BB for ; Sat, 2 Feb 2019 01:06:34 -0800 (PST) Received: from [192.168.124.2] (unknown [111.194.48.82]) by m88102.mail.qiye.163.com (Hmail) with ESMTPA id 227EE41478; Sat, 2 Feb 2019 17:06:28 +0800 (CST) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (1.0) From: Aijun Wang X-Mailer: iPhone Mail (15G77) In-Reply-To: Date: Sat, 2 Feb 2019 17:06:26 +0800 Cc: "lsr@ietf.org" Content-Transfer-Encoding: quoted-printable Message-Id: References: To: Christian Hopps X-HM-Spam-Status: e1kIGBQJHllBS1VLV1koWUFKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZMjUtOj cyP0FLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6N006Oio4KTkCUTE5DRYoHjU8 Q1EaFE1VSlVKTk9CS0JDSEJISUxIVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlKSkpVSkJPVU9DVUNJWVdZCAFZQU1OTUs3Bg++ X-HM-Tid: 0a68ad758aad9865kuuu227ee41478 Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Feb 2019 09:06:40 -0000 Hi, Christian: Based on your information, it is more fair to adopt these two drafts as WG d= ocuments at the same time. The reasons are the followings: 1. The centralized and distributed modes don=E2=80=99t conflict with each ot= her. Anyone can contribute their thoughts on them at their interests. 2. They are both aiming to solve the same problem, which can give the operat= ors more choices once they have been standardized. 3. The technique disputes between these two drafts are undergoing on the mai= ling list. If they are not well solved, we still need to discuss them after t= he adoption. It=E2=80=99s too hurry to make the adoption conclusion at curre= nt time. Aijun Wang China Telecom > =E5=9C=A8 2019=E5=B9=B42=E6=9C=881=E6=97=A5=EF=BC=8C20:25=EF=BC=8CChristia= n Hopps =E5=86=99=E9=81=93=EF=BC=9A >=20 >=20 > Summary of where we are at with dynamic flooding reduction: >=20 > - We have a well written original work that came first and described the p= roblems as well as a TLVs to allow for a centralized solution (draft-li-dyan= mic-flooding). We do not need to standardize the centralized algorithm. >=20 > - A small change to this work allowed for distributed algorithms and for o= utside work on distributed algorithms to continue in parallel. >=20 > - We have another original work that started primarily as a distributed al= gorithm > (draft-cc-ospf-flooding-reduction) >=20 > - Finally we also have: > - Cross-pollination of ideas. > - Failed attempts at merging. > - An authors list "Arms-Race". >=20 > Moving forward: >=20 > - During IETF 103 I proposed we have no conflict if we: >=20 > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > 2) have authors of draft-cc-lsr-flooding-reduction work on a distributed a= lgorithm as they started with. >=20 > - Acee agreed during the meeting (as chair) that this was the best way for= ward. We had some agreement form the floor as well. >=20 > - Any good ideas regarding the distribution of a centralized topology can b= e debated and added (with appropriate attribution) to the base document afte= r we adopt one. >=20 > - This is what happens when we adopt a document as WG work, we work on it.= >=20 > - The original authors of the distributed solution can continue to work on= their distributed algorithm in a separate document which would also need st= andardization. >=20 > Does anyone see a serious problem with this path forward? >=20 > Thanks, > Chris & Acee. > LSR Chairs. >=20 > Christian Hopps writes: >=20 >> We've had the authors of the individual conflicting drafts take a shot at= merging their work. >>=20 >> This has failed. >>=20 >> Here is the full history (which I also summarized during IETF103 as well)= . I will send a second email discussing this. >>=20 >> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynamic= -flooding-isis >> published centralized solution. >>=20 >> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc-= ospf-flooding-reduction >> published distributed solution. >> - mention of centralized solution asserting it is not good choice. >>=20 >> - IETF 101 (Mar 2018) >> - Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6ZT= P5j_HaBNdfPbgxGIp22cnaWS >> - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-10= 1-lsr-00 >> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 >> - Generally well received. >> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. >> - Serious problems immediately found during presentation -- not fully b= aked. >>=20 >> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) >> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) >> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised >> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) >> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. >> - Does not specify distributed algorithm only how to indicate one in use= , small change. >>=20 >> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published >>=20 >> - IETF 102 (Jul 14, 2018) >> - draft-li-dynamic-flooding-05 presented. >> - draft-cc-ospf-flooding-reduction-02 presented. >>=20 >> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) >> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. >>=20 >> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) >>=20 >> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) >>=20 >> - IETF 103 (Nov 3, 2018) >>=20 >> - Chairs give direction >>=20 >> - draft-li-lsr-dynamic-flooding-05 having come first, being well writt= en and not >> specifying a distributed algorithm (merely allowing for one) is the c= orrect vehicle >> to adopt as a base document. >>=20 >> - Distributed algorithm work (the original basis for draft-cc-ospf-flo= oding-reduction) >> should continue as a separate document form the base which would thu= s we have no >> conflicts. >>=20 >> - In the meantime the authors try and merge work, this fails. >>=20 >> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) >>=20 >> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) >>=20 >> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) >=20 > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr From nobody Sat Feb 2 04:20:23 2019 Return-Path: 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 16BCE130D7A for ; 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Sat, 02 Feb 2019 04:20:17 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Robert Raszuk Date: Sat, 2 Feb 2019 13:20:05 +0100 Message-ID: To: Christian Hopps Cc: lsr@ietf.org Content-Type: multipart/alternative; boundary="00000000000052a20a0580e848ad" Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Feb 2019 12:20:21 -0000 --00000000000052a20a0580e848ad Content-Type: text/plain; charset="UTF-8" Sound like best plan fwd. Thx, R. On Fri, Feb 1, 2019, 13:26 Christian Hopps > Summary of where we are at with dynamic flooding reduction: > > - We have a well written original work that came first and described the > problems as well as a TLVs to allow for a centralized solution > (draft-li-dyanmic-flooding). We do not need to standardize the centralized > algorithm. > > - A small change to this work allowed for distributed algorithms and for > outside work on distributed algorithms to continue in parallel. > > - We have another original work that started primarily as a distributed > algorithm > (draft-cc-ospf-flooding-reduction) > > - Finally we also have: > - Cross-pollination of ideas. > - Failed attempts at merging. > - An authors list "Arms-Race". > > Moving forward: > > - During IETF 103 I proposed we have no conflict if we: > > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > 2) have authors of draft-cc-lsr-flooding-reduction work on a > distributed algorithm as they started with. > > - Acee agreed during the meeting (as chair) that this was the best way > forward. We had some agreement form the floor as well. > > - Any good ideas regarding the distribution of a centralized topology can > be debated and added (with appropriate attribution) to the base document > after we adopt one. > > - This is what happens when we adopt a document as WG work, we work on it. > > - The original authors of the distributed solution can continue to work on > their distributed algorithm in a separate document which would also need > standardization. > > Does anyone see a serious problem with this path forward? > > Thanks, > Chris & Acee. > LSR Chairs. > > Christian Hopps writes: > > > We've had the authors of the individual conflicting drafts take a shot > at merging their work. > > > > This has failed. > > > > Here is the full history (which I also summarized during IETF103 as > well). I will send a second email discussing this. > > > > - Jan 2, 2018 Publication: draft-li-dynamic-flooding and > drfat-li-dynamic-flooding-isis > > published centralized solution. > > > > - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and > draft-cc-ospf-flooding-reduction > > published distributed solution. > > - mention of centralized solution asserting it is not good choice. > > > > - IETF 101 (Mar 2018) > > - Video: > https://www.youtube.com/watch?v=qHmT4ytMn4w&list=PLC86T-6ZTP5j_HaBNdfPbgxGIp22cnaWS > > - Minutes: > https://datatracker.ietf.org/meeting/101/materials/minutes-101-lsr-00 > > - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > > - Generally well received. > > - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > > - Serious problems immediately found during presentation -- not > fully baked. > > > > - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) > > - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) > > - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised > > - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) > > - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. > > - Does not specify distributed algorithm only how to indicate one in > use, small change. > > > > - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published > > > > - IETF 102 (Jul 14, 2018) > > - draft-li-dynamic-flooding-05 presented. > > - draft-cc-ospf-flooding-reduction-02 presented. > > > > - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) > > - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. > > > > - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) > > > > - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) > > > > - IETF 103 (Nov 3, 2018) > > > > - Chairs give direction > > > > - draft-li-lsr-dynamic-flooding-05 having come first, being well > written and not > > specifying a distributed algorithm (merely allowing for one) is > the correct vehicle > > to adopt as a base document. > > > > - Distributed algorithm work (the original basis for > draft-cc-ospf-flooding-reduction) > > should continue as a separate document form the base which would > thus we have no > > conflicts. > > > > - In the meantime the authors try and merge work, this fails. > > > > - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) > > > > - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) > > > > - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > --00000000000052a20a0580e848ad Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Sound like best plan fwd.

Thx,
R.

On Fri, Feb 1, 2019, 13:26 Christian Hopps <= ;chopps@chopps.org wrote:

Summary of where we are at with dynamic flooding reduction:

=C2=A0- We have a well written original work that came first and described = the problems as well as a TLVs to allow for a centralized solution (draft-l= i-dyanmic-flooding). We do not need to standardize the centralized algorith= m.

=C2=A0- A small change to this work allowed for distributed algorithms and = for outside work on distributed algorithms to continue in parallel.

=C2=A0- We have another original work that started primarily as a distribut= ed algorithm
=C2=A0 =C2=A0(draft-cc-ospf-flooding-reduction)

=C2=A0- Finally we also have:
=C2=A0 =C2=A0- Cross-pollination of ideas.
=C2=A0 =C2=A0- Failed attempts at merging.
=C2=A0 =C2=A0- An authors list "Arms-Race".

Moving forward:

- During IETF 103 I proposed we have no conflict if we:

=C2=A0 =C2=A01) adopt draft-li-lsr-dyanmic-flooding as the base WG document= .
=C2=A0 =C2=A02) have authors of draft-cc-lsr-flooding-reduction work on a d= istributed algorithm as they started with.

- Acee agreed during the meeting (as chair) that this was the best way forw= ard. We had some agreement form the floor as well.

- Any good ideas regarding the distribution of a centralized topology can b= e debated and added (with appropriate attribution) to the base document aft= er we adopt one.

- This is what happens when we adopt a document as WG work, we work on it.<= br>
- The original authors of the distributed solution can continue to work on = their distributed algorithm in a separate document which would also need st= andardization.

Does anyone see a serious problem with this path forward?

Thanks,
Chris & Acee.
LSR Chairs.

Christian Hopps <chopps@chopps.org> writes:

> We've had the authors of the individual conflicting drafts take a = shot at merging their work.
>
>=C2=A0 =C2=A0 This has failed.
>
> Here is the full history (which I also summarized during IETF103 as we= ll). I will send a second email discussing this.
>
> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dyna= mic-flooding-isis
>=C2=A0 =C2=A0published centralized solution.
>
> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-= cc-ospf-flooding-reduction
>=C2=A0 =C2=A0published distributed solution.
>=C2=A0 =C2=A0- mention of centralized solution asserting it is not good= choice.
>
> - IETF 101 (Mar 2018)
>=C2=A0 =C2=A0- Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&a= mp;list=3DPLC86T-6ZTP5j_HaBNdfPbgxGIp22cnaWS
>=C2=A0 =C2=A0- Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-101-lsr-= 00
>=C2=A0 =C2=A0- draft-li-dynamic-flooding-02 presented (1 author). at IE= TF 101
>=C2=A0 =C2=A0 =C2=A0- Generally well received.
>=C2=A0 =C2=A0- draft-cc-ospf-flooding-reduction-00 (4 authors) presente= d.
>=C2=A0 =C2=A0 =C2=A0- Serious problems immediately found during present= ation -- not fully baked.
>
> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author)
> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author)
> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised
> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors)
>=C2=A0 =C2=A0- *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*.
>=C2=A0 =C2=A0- Does not specify distributed algorithm only how to indic= ate one in use, small change.
>
> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published
>
> - IETF 102 (Jul 14, 2018)
>=C2=A0 =C2=A0- draft-li-dynamic-flooding-05 presented.
>=C2=A0 =C2=A0- draft-cc-ospf-flooding-reduction-02 presented.
>
> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors)
>=C2=A0 =C2=A0- *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*.
>
> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors)
>
> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) >
> - IETF 103 (Nov 3, 2018)
>
>=C2=A0 =C2=A0- Chairs give direction
>
>=C2=A0 =C2=A0 =C2=A0- draft-li-lsr-dynamic-flooding-05 having come firs= t, being well written and not
>=C2=A0 =C2=A0 =C2=A0 =C2=A0specifying a distributed algorithm (merely a= llowing for one) is the correct vehicle
>=C2=A0 =C2=A0 =C2=A0 =C2=A0to adopt as a base document.
>
>=C2=A0 =C2=A0 =C2=A0- Distributed algorithm work (the original basis fo= r draft-cc-ospf-flooding-reduction)
>=C2=A0 =C2=A0 =C2=A0 =C2=A0should continue as a separate document form = the base which would thus we have no
>=C2=A0 =C2=A0 =C2=A0 =C2=A0conflicts.
>
> - In the meantime the authors try and merge work, this fails.
>
> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors)
>
> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors)
>
> - Jan 7, 2019=C2=A0 draft-cc-lsr-flooding-reduction-01 (8 authors)

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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 IAYizcz9q4-0 for ; Sun, 3 Feb 2019 06:40:43 -0800 (PST) Received: from mail-oi1-x235.google.com (mail-oi1-x235.google.com [IPv6:2607:f8b0:4864:20::235]) (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 C173C130D7A for ; Sun, 3 Feb 2019 06:40:42 -0800 (PST) Received: by mail-oi1-x235.google.com with SMTP id r62so9596285oie.1 for ; Sun, 03 Feb 2019 06:40:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=2rK5wvKLH3EhKifjaxFURLfVlX+/1Uq9Vl5Tx0Nlf84=; b=dUxyho+xXwD65bTKrIAOLSYkYNF9oGMPIwOBeI6/r061QHfyO8IIrkVUJCD1MQYSGf 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X-Google-Smtp-Source: ALg8bN4Mwj3qHIz/DC7gNz28ccToduAQDY86nxvbPa8j0G0O4qmo0l4aWJhXmDmJ7clBwGSPTf9A0MPUYqOJft9Egwc= X-Received: by 2002:aca:570a:: with SMTP id l10mr23162096oib.305.1549204842045; Sun, 03 Feb 2019 06:40:42 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Abdussalam Baryun Date: Sun, 3 Feb 2019 16:40:27 +0200 Message-ID: To: Aijun Wang Cc: Christian Hopps , "lsr@ietf.org" Content-Type: multipart/alternative; boundary="0000000000004b68bd0580fe5cc7" Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Feb 2019 14:40:45 -0000 --0000000000004b68bd0580fe5cc7 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sat, Feb 2, 2019 at 11:06 AM Aijun Wang wrote: > Hi, Christian: > > Based on your information, it is more fair to adopt these two drafts as W= G > documents at the same time. The reasons are the followings: > 1. The centralized and distributed modes don=E2=80=99t conflict with each= other. > Anyone can contribute their thoughts on them at their interests. > I am not interested in two modes only if it is proved that they don't conflict, I think two modes can cause problems. > 2. They are both aiming to solve the same problem, which can give the > operators more choices once they have been standardized. > I am interested to adopt different works/drafts, not similar solving same problem within same WG, we need to work as a team and separate work. We can make two drafts merged into one, but IMHO having many authors working on two similar work is not good practice/process or not good adoption. 3. The technique disputes between these two drafts are undergoing on the > mailing list. If they are not well solved, we still need to discuss them > after the adoption. It=E2=80=99s too hurry to make the adoption conclusio= n at > current time. > Why we adopt if they are not well solved into one draft, having two not solved is worst than having only one, even in discussions in IETF, it is very very difficult to discuss with authors of an adopted draft, it is easier to discuss and change non adopted drafts. If I was IETF WG chair I will delay adoptions until we get authors to update their work and making things clear to be well solved before WG adoptions. > =E5=9C=A8 2019=E5=B9=B42=E6=9C=881=E6=97=A5=EF=BC=8C20:25=EF=BC=8CChristi= an Hopps =E5=86=99=E9=81=93=EF=BC=9A > > > Summary of where we are at with dynamic flooding reduction: > > - We have a well written original work that came first and described the problems as well as a TLVs to allow for a centralized solution (draft-li-dyanmic-flooding). We do not need to standardize the centralized algorithm. > > - A small change to this work allowed for distributed algorithms and for outside work on distributed algorithms to continue in parallel. > > - We have another original work that started primarily as a distributed algorithm > (draft-cc-ospf-flooding-reduction) > > > > - Finally we also have: > > - Cross-pollination of ideas. > > - Failed attempts at merging. > > - An authors list "Arms-Race". > > > > Moving forward: > > > > - During IETF 103 I proposed we have no conflict if we: > > > > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > > 2) have authors of draft-cc-lsr-flooding-reduction work on a > distributed algorithm as they started with. > > > > - Acee agreed during the meeting (as chair) that this was the best way > forward. We had some agreement form the floor as well. > > > > - Any good ideas regarding the distribution of a centralized topology > can be debated and added (with appropriate attribution) to the base > document after we adopt one. > This can create big debates and many discussions after adoption. Best way to discuss with-saving times is between authors and WG before adoptions especially when we have many similar solution-drafts . > > > > - This is what happens when we adopt a document as WG work, we work on > it. > > > > - The original authors of the distributed solution can continue to work > on their distributed algorithm in a separate document which would also ne= ed > standardization. > > > > Does anyone see a serious problem with this path forward? > I think it is problem if we adopt without clear discussed-objectives of each draft/author-team under investigation. AB > > --0000000000004b68bd0580fe5cc7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Sat, Feb 2, 2019 = at 11:06 AM Aijun Wang <wan= gaijun@tsinghua.org.cn> wrote:
Hi, Christi= an:

Based on your information, it is more fair to adopt these two drafts as WG = documents at the same time. The reasons are the followings:
1. The centralized and distributed modes don=E2=80=99t conflict with each o= ther. Anyone can contribute their thoughts on them at their interests.
<= /blockquote>

I am not interested in two modes only if it= is proved that they don't conflict, I think=C2=A0two modes=C2=A0can ca= use problems.
=C2=A0
2. They are both aiming to solve the same problem, which can give the opera= tors more choices once they have been standardized.
I am interested to adopt different works/drafts, not similar s= olving same problem within same WG, we need to work as a team and separate = work.=C2=A0We can make two drafts merged into one, but IMHO having many aut= hors working on two similar work is not good practice/process or=C2=A0not g= ood adoption.

3. The technique disputes between these two drafts are undergoing on the ma= iling list. If they are not well solved, we still need to discuss them afte= r the adoption. It=E2=80=99s too hurry to make the adoption conclusion at c= urrent time.

Why we adopt=C2=A0if they = are not well solved into one draft, having two not solved is worst than hav= ing only one, even in discussions=C2=A0in IETF, it is very very difficult t= o discuss with authors of an adopted draft,=C2=A0it is easier to discuss an= d change non adopted drafts. If I was=C2=A0 IETF WG chair I will delay adop= tions until we get authors to update their work and making things clear to = be well solved before WG adoptions.

>
> - Finally we also have:
>=C2=A0 - Cross-pollination of ideas.
>=C2=A0 - Failed attempts at merging.
>=C2=A0 - An authors list "Arms-Race".
>
> Moving forward:
>
> - During IETF 103 I proposed we have no conflict if we:
>
>=C2=A0 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document.<= br> >=C2=A0 2) have authors of draft-cc-lsr-flooding-reduction work on a dis= tributed algorithm as they started with.
>
> - Acee agreed during the meeting (as chair) that this was the best way= forward. We had some agreement form the floor as well.
>
> - Any good ideas regarding the distribution of a centralized topology = can be debated and added (with appropriate attribution) to the base documen= t after we adopt one.

>
> - This is what happens when we adopt a document as WG work, we work on= it.
>
> - The original authors of the distributed solution can continue to wor= k on their distributed algorithm in a separate document which would also ne= ed standardization.
>
> Does anyone see a serious problem with this path forward?

I think it is problem if we=C2=A0adopt without clea= r discussed-objectives of each draft/author-team under investigation.
=

AB=C2=A0

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alln-core-12.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Feb 2019 16:44:50 -0000 --_000_8378287F27B94663A22BF8A2EC6C9FC3ciscocom_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 SGkgSHVhaW1vLA0KDQpTZWUgaW5saW5lLg0KDQpGcm9tOiBMc3IgPGxzci1ib3VuY2VzQGlldGYu b3JnPiBvbiBiZWhhbGYgb2YgSHVhaW1vIENoZW4gPGh1YWltby5jaGVuQGh1YXdlaS5jb20+DQpE YXRlOiBTYXR1cmRheSwgRmVicnVhcnkgMiwgMjAxOSBhdCAxMjoyNyBBTQ0KVG86IENocmlzdGlh biBIb3BwcyA8Y2hvcHBzQGNob3Bwcy5vcmc+LCAibHNyQGlldGYub3JnIiA8bHNyQGlldGYub3Jn Pg0KU3ViamVjdDogUmU6IFtMc3JdIE1vdmluZyBGb3J3YXJkIFtSZTogRmxvb2RpbmcgUmVkdWN0 aW9uIERyYWZ0IFJlZHV4XQ0KDQoNCkhpIEV2ZXJ5b25lLA0KDQoNCg0KV2UgcHJvcG9zZWQgdGhl 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[172.18.7.106]) by Forcepoint Email with ESMTP id F2424293D8D9BEC7CF96 for ; Sun, 3 Feb 2019 16:58:09 +0000 (GMT) Received: from SJCEML701-CHM.china.huawei.com (10.208.112.40) by lhreml704-cah.china.huawei.com (10.201.108.45) with Microsoft SMTP Server (TLS) id 14.3.408.0; Sun, 3 Feb 2019 16:58:09 +0000 Received: from SJCEML521-MBX.china.huawei.com ([169.254.1.95]) by SJCEML701-CHM.china.huawei.com ([169.254.3.144]) with mapi id 14.03.0415.000; Sun, 3 Feb 2019 08:58:02 -0800 From: Huaimo Chen To: "Acee Lindem (acee)" , Christian Hopps , "lsr@ietf.org" Thread-Topic: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Thread-Index: AQHUuilbECC1DxP5/E+8dX31Ej0g66XL9lOggALa/AD//3qaEA== Date: Sun, 3 Feb 2019 16:58:02 +0000 Message-ID: <5316A0AB3C851246A7CA5758973207D463B46315@sjceml521-mbx.china.huawei.com> References: <5316A0AB3C851246A7CA5758973207D463B3B9D8@sjceml521-mbx.china.huawei.com> <8378287F-27B9-4663-A22B-F8A2EC6C9FC3@cisco.com> In-Reply-To: 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SMTP id x40mr45513044qvf.18.1549213320733; Sun, 03 Feb 2019 09:02:00 -0800 (PST) MIME-Version: 1.0 References: <5316A0AB3C851246A7CA5758973207D463B462E0@sjceml521-mbx.china.huawei.com> In-Reply-To: <5316A0AB3C851246A7CA5758973207D463B462E0@sjceml521-mbx.china.huawei.com> From: Robert Raszuk Date: Sun, 3 Feb 2019 18:01:49 +0100 Message-ID: To: Huaimo Chen Cc: David Allan I , "li_zhenqiang@hotmail.com" , "chopps@chopps.org" , "lsr@ietf.org" Content-Type: multipart/alternative; boundary="000000000000a9f7d1058100550a" Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Feb 2019 17:02:04 -0000 --000000000000a9f7d1058100550a Content-Type: text/plain; charset="UTF-8" > The former will have all the good parts for the centralized solution, and the latter will have all the good parts for the distributed solution. And in your view which draft should contain required protocol extensions to accommodate both solutions ? Or are you suggesting that we should have completely different protocol extensions for distribution of centralized computed graphs vs for propagating parameters allowing customized distributed computation of partial flooding topology ? Thx, R. On Sun, Feb 3, 2019 at 5:44 PM Huaimo Chen wrote: > Hi Dave, > > > > There are two drafts containing the centralized solution and distributed > solution already on the table too. If the two drafts are adopted, they need > to be updated for one draft to focus on the centralized solution and the > other on the distributed solution. The former will have all the good parts > for the centralized solution, and the latter will have all the good parts > for the distributed solution. > > > > Best Regards, > > Huaimo > > --000000000000a9f7d1058100550a Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
> The former will have all the good parts for the cent= ralized solution, and the latter will have all the good parts for the distr= ibuted solution.=C2=A0=C2=A0

And in your view which draft should contain required protocol extensions = to accommodate both solutions ?=C2=A0

Or are you s= uggesting that we should have completely different protocol extensions for = distribution of centralized computed graphs vs for propagating parameters a= llowing customized distributed computation of partial flooding topology ?= =C2=A0

Thx,
R.

=
= On Sun, Feb 3, 2019 at 5:44 PM Huaimo Chen <huaimo.chen@huawei.com> wrote:

Hi Dave,=

=C2=A0

There are two drafts containing the centralized solution and di= stributed solution already on the table too. If the two drafts are adopted,= they need to be updated for one draft to focus on the centralized solution and the other on the distributed solution. The= former will have all the good parts for the centralized solution, and the = latter will have all the good parts for the distributed solution.

=C2=A0

Best Regards,

Huaimo

--000000000000a9f7d1058100550a-- From nobody Sun Feb 3 12:14:15 2019 Return-Path: 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 E5624127598 for ; Sun, 3 Feb 2019 12:14:14 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.001, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-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 Si1rNPNGJ23b for ; Sun, 3 Feb 2019 12:14:13 -0800 (PST) Received: from mail-pg1-x52f.google.com (mail-pg1-x52f.google.com [IPv6:2607:f8b0:4864:20::52f]) (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 2465E1277CC for ; Sun, 3 Feb 2019 12:14:13 -0800 (PST) Received: by mail-pg1-x52f.google.com with SMTP id w7so5325464pgp.13 for ; Sun, 03 Feb 2019 12:14:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=i+hCD0s72if8Rm2UnwjSesPL8KPMoTBQsyBBvfkheSQ=; b=MylFwCxdENqufKp3FPugfyeguvT/kCAbsFTvJ7OgjP+lexPIr0KV35XtgjOvmOgYuG Jbja5sMMtRZFId1NIzIUxWHzwfvQDOsCQ2Y5bkytcUwlpmX6dFu0jsnl+aUvB/aYvUX4 N8+eb9yWpgxMBZMzOw/d1Wt+254fcyxpWCsFFcD9fNqzKRyOLTFF5r4/O/lJ2cMBQNcC AgTjSRyC5LmSAkkd3rhJbODVHIqHfWHhiqjIK6NMBQowhkH2ZwdqvKMDCzAw67r9DhK+ A2L9TVA6Z9uiTewaCjWFFjf0O8pm99GdbIkDTPKlBXc0yagSuIGMKYtAJx+rG/jKAZ/F tevQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:mime-version:subject:from:in-reply-to :date:cc:content-transfer-encoding:message-id:references:to; bh=i+hCD0s72if8Rm2UnwjSesPL8KPMoTBQsyBBvfkheSQ=; b=AKhX2tJNNejt0YOrRJSm0ZaUtLsfjr1n3o2EWmHVuxpzfeLMJq0DBYtHDWc0BLV3PC e3R3cJj+ZWJpIjw0tUOGtZBdrYar4m65YnH7fEPfKmFiNqMPP9yy76CMVpkfB+MbDtk5 /3yda8DiDP5aLBPmA2FkpXfgbwWmHCUkBQUgLhqRPqaiyafMR1UIBnaW/O+41nIXLx+f IURaJpCxNg76sovkFlfFgPtjko4FYSAYX5/XQmaW4B5HUCph1ACbt+kGnCMVdTRCz2CR hYB0uRWXMok5LuazTH4ypbtILCHw5QxDwrat8c9GJOE4dKwPXBNQT7ueuKAH7L7gkIGq cDxQ== X-Gm-Message-State: AHQUAuZuUdtbGbJNKlLrNhZlLozFCOLPD1+7dRf6ToKnQGcs5NBR8Cky vuZpFicQksOjlnUy2jv2xns= X-Google-Smtp-Source: AHgI3IaWcHjhrm+i5dMdwEeaDuSgw/aA8Dy62Sd0a5X33nLwNL3LdGkjlgy7/I43oqAJY5S6LY0/Hg== X-Received: by 2002:a63:2a83:: with SMTP id q125mr10721403pgq.98.1549224852658; Sun, 03 Feb 2019 12:14:12 -0800 (PST) Received: from [192.168.1.8] (c-73-158-115-137.hsd1.ca.comcast.net. [73.158.115.137]) by smtp.gmail.com with ESMTPSA id t5sm7237041pgo.70.2019.02.03.12.14.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 03 Feb 2019 12:14:12 -0800 (PST) Sender: Tony Li Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) From: tony.li@tony.li In-Reply-To: Date: Sun, 3 Feb 2019 12:14:10 -0800 Cc: Huaimo Chen , "lsr@ietf.org" , "chopps@chopps.org" , "li_zhenqiang@hotmail.com" , David Allan I Content-Transfer-Encoding: quoted-printable Message-Id: <04B9EB6B-AD78-4FFA-A292-9AFC06CDC487@tony.li> References: <5316A0AB3C851246A7CA5758973207D463B462E0@sjceml521-mbx.china.huawei.com> To: Robert Raszuk X-Mailer: Apple Mail (2.3445.102.3) Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Feb 2019 20:14:15 -0000 I think that this discussion would be greatly clarified if we clearly = separated the discussion between=20 a) the algorithm for computing the flooding topology, and b) the signaling to indicate how to proceed. I think that we are all in agreement that the algorithms can and should = be separated from the signaling. I think that we are all in agreement that each algorithm should be = independent. I=E2=80=99m of the opinion that the centralized signaling is a bit more = extensive than the signaling for the distributed mode, but that there is = also considerable overlap and that things would be unnecessarily redundant if we were to separate them. I believe that = we are not in disagreement about the basics for the distributed = signaling. If you disagree with this, please clearly articulate why you feel the = signaling should be separated. Regards, Tony From nobody Sun Feb 3 12:37:43 2019 Return-Path: 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 23EFD127133 for ; Sun, 3 Feb 2019 12:37:41 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 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_NONE=-0.0001, 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=raszuk.net 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 TrUuPp2nS8x8 for ; Sun, 3 Feb 2019 12:37:39 -0800 (PST) Received: from mail-qt1-x829.google.com (mail-qt1-x829.google.com [IPv6:2607:f8b0:4864:20::829]) (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 C5A5A1228B7 for ; Sun, 3 Feb 2019 12:37:38 -0800 (PST) Received: by mail-qt1-x829.google.com with SMTP id p17so13453193qtl.5 for ; Sun, 03 Feb 2019 12:37:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=raszuk.net; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=TabAorcApEhS1NSTmYzyUYfjdP1Nn648MiyZDyXyEUY=; b=VBOR8lceM5o4qA+BL4tML7/aRxDFPLn78VfF/evZQ1GArlmjwaBeObs5bPl2Up+/QE yfOyP8T20XQzrM3PJwHI6dUOrnNFPneDQiRIeR+e97SAAWaODbVtr/A3Jsc5HBfCTZ0O Yi+sILqnosjSHk1jZa/NvIJeqllM6htJFgfGVaJ5Y34SOyVVXaDnj3vWotiaOlFfGMEm 37h87srZTqosvdfo9Xz350Uwj7kCi6H5G6OVl559C06o9Ge1Gxgpv0HrK/0cOLye2oYP TSHkEyFr0eLHsC/cBdKXQ86YUjubvTdInUX1PBkfwImkV4wZreCkd4K5MmbU1UKr3tBp q1Uw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=TabAorcApEhS1NSTmYzyUYfjdP1Nn648MiyZDyXyEUY=; b=DxT0N8DH/Hc/GtkhunygtPIYTT333EuuZi1kGg59E8zPYmCdWPLzxVARgwtgsu6Jdg H2WeIl1JkNSBTyeKj8sYRaudwOHg7jgu0DSsJYYFkhgGztackObgSYNS1huvS5wesg6a 5zpoNmBOJs1K6FQZer9URZjh2VR4IXuKfrHFOqLM3OaZ5Kq810CTsgx4geqEZ6EHztYf oVPqsmCSNVTTRXOlcSHXUOM6qf4BhgW/Ws2ZnL9If67lkjWF4fWAHpTbeg4UunIiWFIf mwRvQizoY22soU+IoPt6Y47VHyEvPIsMi6wRdpLNz7aykg6KkyiBe79IiAZcpUEAyMVx VVRQ== X-Gm-Message-State: AJcUukfoiXvaE/h66HX3tgi8ltFmPx/Afc3qKsKL+UMga8B8x82jrlYy +oR12hEo3tb9BSGt3p7PYOG8BkKy1sBXsjRXDUsTBw== X-Google-Smtp-Source: ALg8bN7PzBoRjpnuzenFnKzcDRnSvpsphTn2085IVGzLaegUNFarUEX6sBGSKcHuWc06Nto5camig55JcztM0A0Lq1o= X-Received: by 2002:ac8:7644:: with SMTP id i4mr47759116qtr.293.1549226257107; Sun, 03 Feb 2019 12:37:37 -0800 (PST) MIME-Version: 1.0 References: <5316A0AB3C851246A7CA5758973207D463B462E0@sjceml521-mbx.china.huawei.com> <04B9EB6B-AD78-4FFA-A292-9AFC06CDC487@tony.li> In-Reply-To: <04B9EB6B-AD78-4FFA-A292-9AFC06CDC487@tony.li> From: Robert Raszuk Date: Sun, 3 Feb 2019 21:37:26 +0100 Message-ID: To: Tony Li Cc: Huaimo Chen , "lsr@ietf.org" , "chopps@chopps.org" , "li_zhenqiang@hotmail.com" , David Allan I Content-Type: multipart/alternative; boundary="000000000000bb5f1805810358b2" Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Feb 2019 20:37:41 -0000 --000000000000bb5f1805810358b2 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I fully agree and support proceeding with draft-li-dyanmic-flooding and to include protocol extensions in it for centralized topology propagation as well as basic hooks like "execute dynamic protocol number X" for distributed calculations. However one may observe that separate distributed algorithms may define their own protocol extensions and they should not break the above in any way. Then there is already some requirements of building two disjoined topologies in any rich ECMP DC fabric one say for primary paths the other for backup flows. (Case of active-active dual streaming applications). Question arises if this would be addressed also as part of basic spec, be combined with one or many of distributed algorithms or will require yet one more document which in turn will "extend" all of the above ? And before anyone suggests multi instance approach with logical or physical link separation it is not the right direction here. If anything perhaps MTR or SR come a bit closer. Kind regards, Robert. On Sun, Feb 3, 2019 at 9:14 PM wrote: > > I think that this discussion would be greatly clarified if we clearly > separated the discussion between > > a) the algorithm for computing the flooding topology, and > b) the signaling to indicate how to proceed. > > I think that we are all in agreement that the algorithms can and should b= e > separated from the signaling. > > I think that we are all in agreement that each algorithm should be > independent. > > I=E2=80=99m of the opinion that the centralized signaling is a bit more e= xtensive > than the signaling for the distributed mode, but that there is also > considerable overlap and that things would > be unnecessarily redundant if we were to separate them. I believe that we > are not in disagreement about the basics for the distributed signaling. > > If you disagree with this, please clearly articulate why you feel the > signaling should be separated. > > Regards, > Tony > > --000000000000bb5f1805810358b2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

I fully agree and support proceeding with= =C2=A0 draft-li-dyanmic-flooding and to include protocol extensions in it for cent= ralized topology propagation as well as basic hooks like "execute dyna= mic protocol number X" for distributed calculations.=C2=A0

However one may observe that separate distributed algorithms may de= fine their own protocol extensions and they should not break the above in a= ny way.=C2=A0

Then there is already some requireme= nts of building two disjoined topologies in any rich ECMP DC fabric one say= for primary paths the other for backup flows. (Case of active-active dual = streaming applications). Question arises if this would be addressed also as= part of basic spec, be combined with one or many of distributed algorithms= or will require yet one more document which in turn will "extend"= ; all of the above ? And before anyone suggests multi instance approach wit= h logical or physical link separation it is not the right direction here. I= f anything perhaps MTR or SR come a bit closer.=C2=A0

<= div>Kind regards,
Robert.


On Sun, Feb 3, 2019= at 9:14 PM <tony.li@tony.li> = wrote:

I think that this discussion would be greatly clarified if we clearly separ= ated the discussion between

a) the algorithm for computing the flooding topology, and
b) the signaling to indicate how to proceed.

I think that we are all in agreement that the algorithms can and should be = separated from the signaling.

I think that we are all in agreement that each algorithm should be independ= ent.

I=E2=80=99m of the opinion that the centralized signaling is a bit more ext= ensive than the signaling for the distributed mode, but that there is also = considerable overlap and that things would
be unnecessarily redundant if we were to separate them. I believe that we a= re not in disagreement about the basics for the distributed signaling.

If you disagree with this, please clearly articulate why you feel the signa= ling should be separated.

Regards,
Tony

--000000000000bb5f1805810358b2-- From nobody Sun Feb 3 13:28:52 2019 Return-Path: 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 6475B128CF2 for ; Sun, 3 Feb 2019 13:28:50 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.642 X-Spam-Level: X-Spam-Status: No, score=-14.642 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.142, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 OzgvmmC2x9sU for ; Sun, 3 Feb 2019 13:28:48 -0800 (PST) Received: from rcdn-iport-6.cisco.com 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(ginsberg)" To: "tony.li@tony.li" , Robert Raszuk CC: Huaimo Chen , "chopps@chopps.org" , David Allan I , "li_zhenqiang@hotmail.com" , "lsr@ietf.org" Thread-Topic: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Thread-Index: AQHUu+I7MTaos8rZLUehB4M55Pvgq6XO5twA//+wFVA= Date: Sun, 3 Feb 2019 21:28:45 +0000 Message-ID: References: <5316A0AB3C851246A7CA5758973207D463B462E0@sjceml521-mbx.china.huawei.com> <04B9EB6B-AD78-4FFA-A292-9AFC06CDC487@tony.li> In-Reply-To: <04B9EB6B-AD78-4FFA-A292-9AFC06CDC487@tony.li> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.24.18.23] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Outbound-SMTP-Client: 173.36.7.12, xch-aln-002.cisco.com X-Outbound-Node: alln-core-10.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org 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x-originating-ip: [10.24.18.23] Content-Type: multipart/alternative; boundary="_000_45942d70784d48a5ae154a2656534005XCHALN001ciscocom_" MIME-Version: 1.0 X-Outbound-SMTP-Client: 173.37.102.12, xch-rcd-002.cisco.com X-Outbound-Node: alln-core-6.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Feb 2019 21:37:58 -0000 --_000_45942d70784d48a5ae154a2656534005XCHALN001ciscocom_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Um9iZXJ0IOKAkw0KDQpMZXTigJlzIHBsZWFzZSBub3QgaW50cm9kdWNlIGlzc3VlcyB3aGljaCBh cmUgbm90IHJlbGV2YW50LiDimLoNCg0KQW55IGZsb29kaW5nIG9wdGltaXphdGlvbiBzb2x1dGlv biBvbmx5IGFwcGxpZXMgdG8gYSBzaW5nbGUgTFNEQiDigJMgYW5kIHRoZSBzZXQgb2Ygbm9kZXMv 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lhreml702-cah.china.huawei.com (10.201.108.43) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 4 Feb 2019 09:37:03 +0000 Received: from lhreml702-chm.china.huawei.com (10.201.108.51) by lhreml702-chm.china.huawei.com (10.201.108.51) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Mon, 4 Feb 2019 09:37:02 +0000 Received: from DGGEMM401-HUB.china.huawei.com (10.3.20.209) by lhreml702-chm.china.huawei.com (10.201.108.51) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA_P256) id 15.1.1591.10 via Frontend Transport; Mon, 4 Feb 2019 09:37:02 +0000 Received: from DGGEMM532-MBX.china.huawei.com ([169.254.7.46]) by DGGEMM401-HUB.china.huawei.com ([10.3.20.209]) with mapi id 14.03.0415.000; Mon, 4 Feb 2019 17:36:16 +0800 From: Lizhenbin To: Christian Hopps , "lsr@ietf.org" Thread-Topic: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Thread-Index: AQHUuilYssyTa6a6nUaesqSz7DHi96XPXEAU Date: Mon, 4 Feb 2019 09:36:16 +0000 Message-ID: <5A5B4DE12C0DAC44AF501CD9A2B01A8D8F53D937@DGGEMM532-MBX.china.huawei.com> References: , In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.45.173.25] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: [Lsr] =?gb2312?b?tPC4tDogIE1vdmluZyBGb3J3YXJkIFtSZTogRmxvb2Rp?= =?gb2312?b?bmcgUmVkdWN0aW9uIERyYWZ0IFJlZHV4XQ==?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Feb 2019 09:37:13 -0000 SGkgQ2hyaXMgJiBBY2VlLA0KDQo+IC0gSmFuIDIsIDIwMTggUHVibGljYXRpb246IGRyYWZ0LWxp LWR5bmFtaWMtZmxvb2RpbmcgYW5kIGRyZmF0LWxpLWR5bmFtaWMtZmxvb2RpbmctaXNpcw0KPiAg 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Return-Path: 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 7680E130E16 for ; Mon, 4 Feb 2019 05:20:57 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, URIBL_RED=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 h55f1WZVkTAc for ; Mon, 4 Feb 2019 05:20:55 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id 89A72130E0A for ; Mon, 4 Feb 2019 05:20:55 -0800 (PST) Received: from tops.chopps.org (47-50-69-38.static.klmz.mi.charter.com [47.50.69.38]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPS id 9461C60452; Mon, 4 Feb 2019 08:20:52 -0500 (EST) References: User-agent: mu4e 1.1.0; emacs 26.1 From: Christian Hopps To: Aijun Wang Cc: Christian Hopps , "lsr\@ietf.org" In-reply-to: Date: Mon, 04 Feb 2019 08:20:51 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Feb 2019 13:20:57 -0000 --=-=-= Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Aijun Wang writes: > Hi, Christian: > > Based on your information, it is more fair to adopt these two drafts as W= G documents at the same time. The reasons are the followings: > 1. The centralized and distributed modes don=E2=80=99t conflict with each= other. Anyone can contribute their thoughts on them at their interests. No we do not adopt 2 documents solving the same relatively simple problem (= signaling, primarily for centralized mode), we adopt one and incorporate an= y improvements needed, this isn't that hard a problem and we certainly don'= t need multiple solutions. Work on algorithms *is* a hard problem and can and should continue to be do= ne in parallel with no conflict. > 2. They are both aiming to solve the same problem, which can give the ope= rators more choices once they have been standardized. There's literally *no* reason to do this. We need to do our jobs as a WG an= d produce a single standard for signaling. > 3. The technique disputes between these two drafts are undergoing on the = mailing list. If they are not well solved, we still need to discuss them af= ter the adoption. It=E2=80=99s too hurry to make the adoption conclusion at= current time. We've had a *YEAR* of multiple author documents, we're not hurrying at all,= it's time to move forward. Thanks, Chris. > > Aijun Wang > China Telecom > >> =E5=9C=A8 2019=E5=B9=B42=E6=9C=881=E6=97=A5=EF=BC=8C20:25=EF=BC=8CChrist= ian Hopps =E5=86=99=E9=81=93=EF=BC=9A >> >> >> Summary of where we are at with dynamic flooding reduction: >> >> - We have a well written original work that came first and described the= problems as well as a TLVs to allow for a centralized solution (draft-li-d= yanmic-flooding). We do not need to standardize the centralized algorithm. >> >> - A small change to this work allowed for distributed algorithms and for= outside work on distributed algorithms to continue in parallel. >> >> - We have another original work that started primarily as a distributed = algorithm >> (draft-cc-ospf-flooding-reduction) >> >> - Finally we also have: >> - Cross-pollination of ideas. >> - Failed attempts at merging. >> - An authors list "Arms-Race". >> >> Moving forward: >> >> - During IETF 103 I proposed we have no conflict if we: >> >> 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. >> 2) have authors of draft-cc-lsr-flooding-reduction work on a distribute= d algorithm as they started with. >> >> - Acee agreed during the meeting (as chair) that this was the best way f= orward. We had some agreement form the floor as well. >> >> - Any good ideas regarding the distribution of a centralized topology ca= n be debated and added (with appropriate attribution) to the base document = after we adopt one. >> >> - This is what happens when we adopt a document as WG work, we work on i= t. >> >> - The original authors of the distributed solution can continue to work = on their distributed algorithm in a separate document which would also need= standardization. >> >> Does anyone see a serious problem with this path forward? >> >> Thanks, >> Chris & Acee. >> LSR Chairs. >> >> Christian Hopps writes: >> >>> We've had the authors of the individual conflicting drafts take a shot = at merging their work. >>> >>> This has failed. >>> >>> Here is the full history (which I also summarized during IETF103 as wel= l). I will send a second email discussing this. >>> >>> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynam= ic-flooding-isis >>> published centralized solution. >>> >>> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-c= c-ospf-flooding-reduction >>> published distributed solution. >>> - mention of centralized solution asserting it is not good choice. >>> >>> - IETF 101 (Mar 2018) >>> - Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6= ZTP5j_HaBNdfPbgxGIp22cnaWS >>> - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-= 101-lsr-00 >>> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 >>> - Generally well received. >>> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. >>> - Serious problems immediately found during presentation -- not full= y baked. >>> >>> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) >>> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) >>> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised >>> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) >>> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. >>> - Does not specify distributed algorithm only how to indicate one in u= se, small change. >>> >>> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published >>> >>> - IETF 102 (Jul 14, 2018) >>> - draft-li-dynamic-flooding-05 presented. >>> - draft-cc-ospf-flooding-reduction-02 presented. >>> >>> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) >>> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. >>> >>> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) >>> >>> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) >>> >>> - IETF 103 (Nov 3, 2018) >>> >>> - Chairs give direction >>> >>> - draft-li-lsr-dynamic-flooding-05 having come first, being well wri= tten and not >>> specifying a distributed algorithm (merely allowing for one) is th= e correct vehicle >>> to adopt as a base document. >>> >>> - Distributed algorithm work (the original basis for draft-cc-ospf-f= looding-reduction) >>> should continue as a separate document form the base which would t= hus we have no >>> conflicts. >>> >>> - In the meantime the authors try and merge work, this fails. >>> >>> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) >>> >>> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) >>> >>> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) >> >> _______________________________________________ >> Lsr mailing list >> Lsr@ietf.org >> https://www.ietf.org/mailman/listinfo/lsr --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxYPDMACgkQLh2DDte4 MCVj5RAAlDKHdhMVy/fUxFQ0eMRsVdG1C4uwY/qAm0KCyo7vuPnVnMdvE2hndq4w FInF1c/klat4OoG9k1IM9yWHpqA5yw3+AJlEkOKDbQdV0xMMV8ZMoJQ7t1O3hG+i ekZLiV9LuCfnk7jeOO4J9NQYlh9ajtoDI4vqlfA2Bu69xtild8hdrHc9ErQqOBhF Lm5KLwl5Uj+kqW+uDwEJTdjBmAiktc9z2NdqIVwByFJWx2PUHfdPIUgTtRVLocMm /cF5LRagnlmN9wkW21hZ0j6meFtSt6SjXvjE7tszUxP/MLYwz8mpW8gQqzDqkFst HtbVb/OV9gh+KfCGJcJszbU1lL3YXQ/nhUB7Kb9IBHDv1EJPbLgYFe6p9BUAnzfV ih+Q4WkTS54ZEX71ke7co8bBHQTPcSUmowXTcFKr17WlhFvRGvLwLNb67tlFkCNo K+0id+x92j7lsxNXkp/jcJmQGaKO+w/wHjCEo4bqQfWhWdiO13H26PsbEnz/9pBq dVuU0o5sK/V4HDT7sLeSjcA3yI5QYUbpkOKtIVpGqs4KHthGJHWX/5NTH+vg/f8j Mvo4eyFnMpAse1GL/Ru6ofDUyK8YbvcKz8hubDKfNPefjUC2R/63GfGnjI5MbLG6 hg3VG7Lufh1nR95lZ1e8xhhl0UHu7aLgJjHxhD9xWde5X1HHXV0= =A2WI -----END PGP SIGNATURE----- --=-=-=-- From nobody Mon Feb 4 05:42:21 2019 Return-Path: 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 C9DE1130DE4 for ; Mon, 4 Feb 2019 05:42:19 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001] 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 X7mU5EYIK87S for ; Mon, 4 Feb 2019 05:42:16 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id 89EAA128CF3 for ; Mon, 4 Feb 2019 05:42:16 -0800 (PST) Received: from tops.chopps.org (47-50-69-38.static.klmz.mi.charter.com [47.50.69.38]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPS id 85F5F60452; Mon, 4 Feb 2019 08:42:15 -0500 (EST) References: <5A5B4DE12C0DAC44AF501CD9A2B01A8D8F53D937@DGGEMM532-MBX.china.huawei.com> User-agent: mu4e 1.1.0; emacs 26.1 From: Christian Hopps To: Lizhenbin Cc: Christian Hopps , "lsr\@ietf.org" In-reply-to: <5A5B4DE12C0DAC44AF501CD9A2B01A8D8F53D937@DGGEMM532-MBX.china.huawei.com> Date: Mon, 04 Feb 2019 08:42:14 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Archived-At: Subject: Re: [Lsr] =?utf-8?b?562U5aSNOiAgTW92aW5nIEZvcndhcmQgW1JlOiBGbG9vZGlu?= =?utf-8?q?g_Reduction_Draft_Redux=5D?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Feb 2019 13:42:20 -0000 --=-=-= Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Lizhenbin writes: > Hi Chris & Acee, > >> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynami= c-flooding-isis >> published centralized solution. >> >> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc= -ospf-flooding-reduction >> published distributed solution > > Thanks for your summary we know the fact that at beginning there was not = any confliction between the two drafts. > > >> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) >> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. >> - Does not specify distributed algorithm only how to indicate one in u= se, small change. > > I do not think it is a small change. It is to introduced the totally new = solution which was already defined in the other existing draft. It is not a= n appropariate behavior and the root cause of the potential confliction. It added 8 bits to signal which distributed algorithm (if any) was in use. = How is that not small? > I also think the distributed solution includes more than the algorithms d= efined in the draft-cc-lsr-flooding-reduction-00 and the overlapped signal= lings defined in the draft-cc-lsr-flooding-reduction-00/draft-li-dynamic-f= looding-03. Since the co-authors could not merge the draft, though the exis= ting suggestion proposed is try to separate the two drafts, there is still = overlap on the distributed solution between the two drafts which may be the= source of continuous confliction in the future. In order to avoid the situ= ation I would like to propose following suggestions: Yes, the CC draft added a ton of new signaling after the fact. We didn't ne= ed this, and it has been the root cause of the conflict. The signaling is not the hard part to solve here and we don't need to be sp= ending all this time and effort (15 authors now?!) on it. Instead of spending more time on signaling, we need to get rid of this conf= lict, and have people working on the *actual hard problems* of the flooding= topology calculation. There's no conflict here, there's room for multiple = solutions, and it's the hard part. Thanks, Chris. > - move both the two drafts forward in parallel keeping draft-li-dynamic-f= looding focus on the centralized solution and draft-cc-lsr-flooding-reducti= on on the distributed solution. > - draft-li-dynamic-flooding can keep on refining the centralized solution= without mentioning distibuted solutions. > - draft-cc-lsr-flooding-reduction can keep on refining the distributed so= lutions. For the sigalling which can be shared by the two modes, the draft = can indicate the distributed solutions reuse the signalling defined in draf= t-li-dynamic-flooding without defining new signalling. > - both drafts change the draft names to reflect different solutions witho= ut causing confusion. > > > Thanks & Regards, > Zhenbin (Robin) > > > > > > ________________________________________ > =E5=8F=91=E4=BB=B6=E4=BA=BA: Lsr [lsr-bounces@ietf.org] =E4=BB=A3=E8=A1= =A8 Christian Hopps [chopps@chopps.org] > =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2019=E5=B9=B42=E6=9C=881=E6=97=A5 2= 0:25 > =E6=94=B6=E4=BB=B6=E4=BA=BA: lsr@ietf.org > =E6=8A=84=E9=80=81: chopps@chopps.org > =E4=B8=BB=E9=A2=98: [Lsr] Moving Forward [Re: Flooding Reduction Draft Re= dux] > > Summary of where we are at with dynamic flooding reduction: > > - We have a well written original work that came first and described the= problems as well as a TLVs to allow for a centralized solution (draft-li-d= yanmic-flooding). We do not need to standardize the centralized algorithm. > > - A small change to this work allowed for distributed algorithms and for= outside work on distributed algorithms to continue in parallel. > > - We have another original work that started primarily as a distributed = algorithm > (draft-cc-ospf-flooding-reduction) > > - Finally we also have: > - Cross-pollination of ideas. > - Failed attempts at merging. > - An authors list "Arms-Race". > > Moving forward: > > - During IETF 103 I proposed we have no conflict if we: > > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > 2) have authors of draft-cc-lsr-flooding-reduction work on a distribut= ed algorithm as they started with. > > - Acee agreed during the meeting (as chair) that this was the best way fo= rward. We had some agreement form the floor as well. > > - Any good ideas regarding the distribution of a centralized topology can= be debated and added (with appropriate attribution) to the base document a= fter we adopt one. > > - This is what happens when we adopt a document as WG work, we work on it. > > - The original authors of the distributed solution can continue to work o= n their distributed algorithm in a separate document which would also need = standardization. > > Does anyone see a serious problem with this path forward? > > Thanks, > Chris & Acee. > LSR Chairs. > > Christian Hopps writes: > >> We've had the authors of the individual conflicting drafts take a shot a= t merging their work. >> >> This has failed. >> >> Here is the full history (which I also summarized during IETF103 as well= ). I will send a second email discussing this. >> >> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and drfat-li-dynami= c-flooding-isis >> published centralized solution. >> >> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and draft-cc= -ospf-flooding-reduction >> published distributed solution. >> - mention of centralized solution asserting it is not good choice. >> >> - IETF 101 (Mar 2018) >> - Video: https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6= ZTP5j_HaBNdfPbgxGIp22cnaWS >> - Minutes: https://datatracker.ietf.org/meeting/101/materials/minutes-= 101-lsr-00 >> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 >> - Generally well received. >> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. >> - Serious problems immediately found during presentation -- not full= y baked. >> >> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) >> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) >> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised >> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) >> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. >> - Does not specify distributed algorithm only how to indicate one in u= se, small change. >> >> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published >> >> - IETF 102 (Jul 14, 2018) >> - draft-li-dynamic-flooding-05 presented. >> - draft-cc-ospf-flooding-reduction-02 presented. >> >> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) >> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. >> >> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) >> >> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) >> >> - IETF 103 (Nov 3, 2018) >> >> - Chairs give direction >> >> - draft-li-lsr-dynamic-flooding-05 having come first, being well wri= tten and not >> specifying a distributed algorithm (merely allowing for one) is th= e correct vehicle >> to adopt as a base document. >> >> - Distributed algorithm work (the original basis for draft-cc-ospf-f= looding-reduction) >> should continue as a separate document form the base which would t= hus we have no >> conflicts. >> >> - In the meantime the authors try and merge work, this fails. >> >> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) >> >> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) >> >> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxYQTYACgkQLh2DDte4 MCUiGRAAmxRRclEGzI1GZpHlJ17VYArUGm7LkAJrQCnYvklgSd+hPNwGuDAZoQw2 frAB109r7WDerPkHCEXdvMsOdpfh6PvhSp0FEUTeCUm963UOzhlvNgNXceib4eNg nbXcVpOX2IPYxB6/XxSLJvz7KkH1nR/l2i9GT7pgmcRxZAvIGez/9FtgwXSKqiVw nMtImW4RzB7xG0PGGflXlxrHsVVSPh64oIaIwSGbUwtldXGTNex3fC8fOEYadiQz j60BoxrfTHl9HkTpbeEZU6rJRZ3DcazqNSdj1jVJMQeTZeYOVvqGcNaexKA3rRR+ sAmT4P+wBalvz3daWQkpHzczeULVRecEkMHiYZaZVEB0DyKbgQ0D+oUyENNG6OG7 dowtXrGvB5CoQYtO2FVXm6PSux7F+BiK7lms1UW9e2ucu/djK8Aeh1fgT11c0o31 vB6i4bPVVva24iKwIwMBjkjsPOKkODDrn+li+As7UvxAoqHFGVc0QWdUrmv5iOJR dESCEl1h7nBBTN/BHuvdlbqjWhnw44lnpMATuL7/BO+xR5gPFnXM+Wjb2+0NYVwk dW+wjY1GlUPlUTUOccdZkE+f2hIiWFyVapCHz+NU1CvzpUQZpLWAHfgYr9ymBUFY Y1qRmjRatBJtEFHN8EcV+m6ZZjeBY/ProNJ7MlCy3cFCKLfKh/Q= =IPsB -----END PGP SIGNATURE----- --=-=-=-- From nobody Mon Feb 4 08:04:57 2019 Return-Path: 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 8C901130E9D for ; Mon, 4 Feb 2019 08:04:55 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.201 X-Spam-Level: X-Spam-Status: No, score=-4.201 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-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 qcVk3cMB8BUm for ; Mon, 4 Feb 2019 08:04:53 -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 C9587130E94 for ; Mon, 4 Feb 2019 08:04:52 -0800 (PST) Received: from lhreml701-cah.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id 51859E01B95A4C989A13 for ; Mon, 4 Feb 2019 16:04:50 +0000 (GMT) Received: from SJCEML702-CHM.china.huawei.com (10.208.112.38) by lhreml701-cah.china.huawei.com (10.201.108.42) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 4 Feb 2019 16:04:49 +0000 Received: from SJCEML521-MBS.china.huawei.com ([169.254.2.240]) by SJCEML702-CHM.china.huawei.com ([169.254.4.173]) with mapi id 14.03.0415.000; Mon, 4 Feb 2019 08:04:37 -0800 From: Linda Dunbar To: Lizhenbin , Christian Hopps , "lsr@ietf.org" 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Draft Redux] Thread-Index: AQHUuilUUaWOLI4OpkiOe3VLnvRruqXMjKUAgANrv4D//9vNgA== Date: Mon, 4 Feb 2019 16:11:18 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.116.152.197] Content-Type: text/plain; charset="utf-8" Content-ID: <32DE3B65111AF145972EFD4B68D5481C@emea.cisco.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Outbound-SMTP-Client: 64.101.220.153, xch-rtp-013.cisco.com X-Outbound-Node: alln-core-7.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Feb 2019 16:11:24 -0000 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HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-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 b2IXGe_QMsDY; Tue, 5 Feb 2019 04:47:51 -0800 (PST) Received: from mail-wm1-x32c.google.com (mail-wm1-x32c.google.com [IPv6:2a00:1450:4864:20::32c]) (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 CB158130E46; Tue, 5 Feb 2019 04:47:50 -0800 (PST) Received: by mail-wm1-x32c.google.com with SMTP id g67so3514621wmd.2; Tue, 05 Feb 2019 04:47:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:mime-version:subject:message-id:date:to; bh=XnDKCsbZ1v366hP8lXU0egGzQUBv+LESDGQjX5ked3U=; 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X-List-Received-Date: Tue, 05 Feb 2019 12:47:53 -0000 --Apple-Mail=_6EBA4B95-BB06-4760-B654-965206F381D2 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hi, I have question regarding RFC 4203, Section 3. That section introduces = top-level TLV type 4 (Link Local TLV) and, at the same time, describes = Link Local Identifier TLV. I guess that latter in fact is Sub-TLV of = Link Local TLV. Also, IANA Considerations section doesn't mention that = Sub-TLV, but only introduction of Link Local TLV. IANA has no = corresponding registry - "Types for Sub-TLVs of Link Local TLV (Value = 4)". Thanks in advance. Best regards, Alexander Okonnikov --Apple-Mail=_6EBA4B95-BB06-4760-B654-965206F381D2 Content-Transfer-Encoding: 7bit Content-Type: text/html; charset=us-ascii
Hi,

I have question regarding RFC 4203, Section 3. That section introduces top-level TLV type 4 (Link Local TLV) and, at the same time, describes Link Local Identifier TLV. I guess that latter in fact is Sub-TLV of Link Local TLV. Also, IANA Considerations section doesn't mention that Sub-TLV, but only introduction of Link Local TLV. IANA has no corresponding registry  - "Types for Sub-TLVs of Link Local TLV (Value 4)".

Thanks in advance.

Best regards,
Alexander Okonnikov

--Apple-Mail=_6EBA4B95-BB06-4760-B654-965206F381D2-- From nobody Tue Feb 5 09:21:55 2019 Return-Path: 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 A9F90124BAA; Tue, 5 Feb 2019 09:21:53 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -19.052 X-Spam-Level: X-Spam-Status: No, score=-19.052 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-4.553, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_HI=-5, 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 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 j-ApbhEluaRJ; Tue, 5 Feb 2019 09:21:51 -0800 (PST) Received: from 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Okonnikov , "ccamp@ietf.org" , "lsr@ietf.org" Thread-Topic: [Lsr] OSPF TE Link Local TLV Thread-Index: AQHUvVESI0EjoYZPO0Gh8Mzt9fngVKXRY2uA Date: Tue, 5 Feb 2019 17:21:48 +0000 Message-ID: <12BF6AD3-674E-47F5-BD05-040B33DD0354@cisco.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.116.152.197] Content-Type: multipart/alternative; boundary="_000_12BF6AD3674E47F5BD05040B33DD0354ciscocom_" MIME-Version: 1.0 X-Outbound-SMTP-Client: 64.101.220.153, xch-rtp-013.cisco.com X-Outbound-Node: rcdn-core-5.cisco.com Archived-At: Subject: Re: [Lsr] OSPF TE Link Local TLV X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Feb 2019 17:21:54 -0000 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ATQ1OTQ46CpR3iZlhAP/GlZdBY8PjzQzMDQzv27s/nw= X-MS-Exchange-MessageSentRepresentingType: 1 Date: Tue, 5 Feb 2019 17:59:11 +0000 Message-ID: References: , <12BF6AD3-674E-47F5-BD05-040B33DD0354@cisco.com> In-Reply-To: <12BF6AD3-674E-47F5-BD05-040B33DD0354@cisco.com> Accept-Language: ru-RU, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-Exchange-Organization-SCL: -1 X-MS-TNEF-Correlator: X-MS-Exchange-Organization-RecordReviewCfmType: 0 Content-Type: multipart/alternative; boundary="_000_DB7PR04MB4521A0C4B0E14DEE4572C84BA86E0DB7PR04MB4521eurp_" MIME-Version: 1.0 Archived-At: Subject: Re: [Lsr] OSPF TE Link Local TLV X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Feb 2019 17:59:21 -0000 --_000_DB7PR04MB4521A0C4B0E14DEE4572C84BA86E0DB7PR04MB4521eurp_ Content-Type: text/plain; charset="koi8-r" Content-Transfer-Encoding: quoted-printable Hi Acee, Per my understanding Link Local/Remote ID Sub-TLV is to be conveyed in area= -scope LSA to uniquely identify link between pair of routers. For link-loca= l scope another Sub-TLV was introduced, for discovery of link IDs by two ne= ighbors. May be, it is possible to reuse Link Local/Remote ID Sub-TLV (with Remote I= D =3D 0) of Link TLV in link-local scope LSA, but the RFC follows another a= pproach - to use another Sub-TLV and another TLV. I am not sure that we nee= ded dedicated top-level TLV, though idea to use separate Sub-TLV seems to b= e reasonable. Thank you! Best regards, Alexander Okonnikov ________________________________ =EF=D4: Acee Lindem (acee) =EF=D4=D0=D2=C1=D7=CC=C5=CE=CF: =D7=D4=CF=D2=CE=C9=CB, =C6=C5=D7=D2=C1=CC= =D1 5, 2019 20:21 =EB=CF=CD=D5: Alexander Okonnikov; ccamp@ietf.org; lsr@ietf.org =F4=C5=CD=C1: Re: [Lsr] OSPF TE Link Local TLV Hi Alex, From: Lsr on behalf of Alexander Okonnikov Date: Tuesday, February 5, 2019 at 7:48 AM To: "ccamp@ietf.org" , "lsr@ietf.org" Subject: [Lsr] OSPF TE Link Local TLV Hi, I have question regarding RFC 4203, Section 3. That section introduces top-= level TLV type 4 (Link Local TLV) and, at the same time, describes Link Loc= al Identifier TLV. I guess that latter in fact is Sub-TLV of Link Local TLV= . Also, IANA Considerations section doesn't mention that Sub-TLV, but only = introduction of Link Local TLV. IANA has no corresponding registry - "Type= s for Sub-TLVs of Link Local TLV (Value 4)". I believe this example is actually wrong and section 3 should refer to the = top-level Link TLV (value 2) defined in RFC 3630. The Link Local Identifier= is the one advertised in Link Local/Remote Identifiers Sub-TLV (type 11) d= efined in RFC 4203 section 1.1. Hope this helps, Acee Thanks in advance. Best regards, Alexander Okonnikov --_000_DB7PR04MB4521A0C4B0E14DEE4572C84BA86E0DB7PR04MB4521eurp_ Content-Type: text/html; charset="koi8-r" Content-Transfer-Encoding: quoted-printable
Hi Acee,

Per my understanding Link Local/Remote ID Su= b-TLV is to be conveyed in area-scope LSA to uniquely identify link between= pair of routers. For link-local scope another Sub-TLV was introduced, for = discovery of link IDs by two neighbors.

May be, it is possible to reuse Link Local/R= emote ID Sub-TLV (with Remote ID =3D 0) of Link TLV in link-local scope LSA= , but the RFC follows another approach - to use another Sub-TLV and another= TLV. I am not sure that we needed dedicated top-level TLV, though idea to use separate Sub-TLV seems to be reasonable.=

Thank you!

Best regards,
Alexander Okonnikov
 
=EF=D4: A= cee Lindem (acee) <acee@cisco.com>
=EF=D4=D0=D2=C1=D7=CC=C5=CE=CF: =D7=D4=CF=D2=CE=C9=CB, =C6=C5=D7=D2= =C1=CC=D1 5, 2019 20:21
=EB=CF=CD=D5: Alexander Okonnikov; ccamp@ietf.org; lsr@ietf.org
=F4=C5=CD=C1: Re: [Lsr] OSPF TE Link Local TLV
 

Hi Alex,

 

 

From: Lsr <lsr-bounce= s@ietf.org> on behalf of Alexander Okonnikov <alexander.okonnikov@gma= il.com>
Date: Tuesday, February 5, 2019 at 7:48 AM
To: "ccamp@ietf.org" <ccamp@ietf.org>, "lsr@iet= f.org" <lsr@ietf.org>
Subject: [Lsr] OSPF TE Link Local TLV

 

Hi,

 

I have question regarding= RFC 4203, Section 3. That section introduces top-level TLV type 4 (Link Lo= cal TLV) and, at the same time, describes Link Local Identifier TLV. I gues= s that latter in fact is Sub-TLV of Link Local TLV. Also, IANA Considerations section doesn't mention that Sub= -TLV, but only introduction of Link Local TLV. IANA has no corresponding re= gistry  - "Types for Sub-TLVs of Link Local TLV (Value 4)".<= /p>

 

I believe this example is actually wrong and section= 3 should refer to the top-level Link TLV (value 2) defined in RFC 3630. Th= e Link Local Identifier is the one advertised in Link Local/Remote Identifi= ers Sub-TLV (type 11) defined in RFC 4203 section 1.1.

 

Hope this helps,

Acee

 

Thanks in advance.

 

Best r= egards,

Alexan= der Okonnikov



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"Acee Lindem (acee)" To: Okonnikov Alexander , "ccamp@ietf.org" , "lsr@ietf.org" Thread-Topic: [Lsr] OSPF TE Link Local TLV Thread-Index: AQHUvVESI0EjoYZPO0Gh8Mzt9fngVKXRY2uAgABuw4D//7SpAA== Date: Tue, 5 Feb 2019 18:29:33 +0000 Message-ID: References: <12BF6AD3-674E-47F5-BD05-040B33DD0354@cisco.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.116.152.197] Content-Type: multipart/alternative; boundary="_000_CD275F5363764848B9EBF422FB00BF6Eciscocom_" MIME-Version: 1.0 X-Outbound-SMTP-Client: 64.101.220.152, xch-rtp-012.cisco.com X-Outbound-Node: rcdn-core-8.cisco.com Archived-At: Subject: Re: [Lsr] OSPF TE Link Local TLV X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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Tue, 5 Feb 2019 22:40:46 +0300 In-Reply-To: Cc: "ccamp@ietf.org" , "lsr@ietf.org" To: "Acee Lindem (acee)" References: <12BF6AD3-674E-47F5-BD05-040B33DD0354@cisco.com> X-Mailer: Apple Mail (2.3445.9.1) Archived-At: Subject: Re: [Lsr] OSPF TE Link Local TLV X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Feb 2019 19:40:53 -0000 --Apple-Mail=_7612AE11-1B16-4D0A-8F4B-84DA97FDE92E Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Acee, Yes, RFC 8510 provides alternative mechanism, but link identifier = discovery mechanism via link-local TE LSA is still valid. Hence, I think = that early mentioned issues need to be addressed. Thank you! > 5 =D1=84=D0=B5=D0=B2=D1=80. 2019 =D0=B3., =D0=B2 21:29, Acee Lindem = (acee) =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB(=D0=B0)= : >=20 > Hi Alex,=20 > =20 > From: Alexander Okonnikov > > Date: Tuesday, February 5, 2019 at 12:59 PM > To: Acee Lindem >, = "ccamp@ietf.org " >, "lsr@ietf.org " = > > Subject: Re: [Lsr] OSPF TE Link Local TLV > =20 > Hi Acee, > =20 > Per my understanding Link Local/Remote ID Sub-TLV is to be conveyed in = area-scope LSA to uniquely identify link between pair of routers. For = link-local scope another Sub-TLV was introduced, for discovery of link = IDs by two neighbors. > =20 > The context is completely different =E2=80=93 see = https://www.rfc-editor.org/rfc/rfc8510.txt = > =20 > May be, it is possible to reuse Link Local/Remote ID Sub-TLV (with = Remote ID =3D 0) of Link TLV in link-local scope LSA, but the RFC = follows another approach - to use another Sub-TLV and another TLV. I am = not sure that we needed dedicated top-level TLV, though idea to use = separate Sub-TLV seems to be reasonable. > =20 > It is also possible to use a sledge hammer to crack a nut=E2=80=A6.=20 > =20 > Acee=20 > =20 > Thank you! > =20 > Best regards, > Alexander Okonnikov > =20 > =D0=9E=D1=82: Acee Lindem (acee) > > =D0=9E=D1=82=D0=BF=D1=80=D0=B0=D0=B2=D0=BB=D0=B5=D0=BD=D0=BE: = =D0=B2=D1=82=D0=BE=D1=80=D0=BD=D0=B8=D0=BA, =D1=84=D0=B5=D0=B2=D1=80=D0=B0= =D0=BB=D1=8F 5, 2019 20:21 > =D0=9A=D0=BE=D0=BC=D1=83: Alexander Okonnikov; ccamp@ietf.org = ; lsr@ietf.org > =D0=A2=D0=B5=D0=BC=D0=B0: Re: [Lsr] OSPF TE Link Local TLV=20 > =20 > Hi Alex,=20 > =20 > =20 > From: Lsr > on = behalf of Alexander Okonnikov > > Date: Tuesday, February 5, 2019 at 7:48 AM > To: "ccamp@ietf.org " >, "lsr@ietf.org " = > > Subject: [Lsr] OSPF TE Link Local TLV > =20 > Hi, > =20 > I have question regarding RFC 4203, Section 3. That section introduces = top-level TLV type 4 (Link Local TLV) and, at the same time, describes = Link Local Identifier TLV. I guess that latter in fact is Sub-TLV of = Link Local TLV. Also, IANA Considerations section doesn't mention that = Sub-TLV, but only introduction of Link Local TLV. IANA has no = corresponding registry - "Types for Sub-TLVs of Link Local TLV (Value = 4)". > =20 > I believe this example is actually wrong and section 3 should refer to = the top-level Link TLV (value 2) defined in RFC 3630. The Link Local = Identifier is the one advertised in Link Local/Remote Identifiers = Sub-TLV (type 11) defined in RFC 4203 section 1.1.=20 > =20 > Hope this helps,=20 > Acee > =20 > Thanks in advance. > =20 > Best regards, > Alexander Okonnikov --Apple-Mail=_7612AE11-1B16-4D0A-8F4B-84DA97FDE92E Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi = Acee,

Yes, RFC 8510 = provides alternative mechanism, but link identifier discovery mechanism = via link-local TE LSA is still valid. Hence, I think that early = mentioned issues need to be addressed.

Thank you!

5 =D1=84=D0=B5=D0=B2=D1=80. 2019 =D0=B3., =D0=B2 21:29, Acee = Lindem (acee) <acee@cisco.com> =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB= (=D0=B0):

Hi Alex, 
 
From: Alexander Okonnikov <alexander.okonnikov@gmail.com>
Date: Tuesday, February 5, = 2019 at 12:59 PM
To: Acee Lindem <acee@cisco.com>, "ccamp@ietf.org" <ccamp@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>
Subject: Re: [Lsr] OSPF TE Link = Local TLV
 
Hi = Acee,
 
Per my understanding Link Local/Remote ID = Sub-TLV is to be conveyed in area-scope LSA to uniquely identify link = between pair of routers. For link-local scope another Sub-TLV was = introduced, for discovery of link IDs by two neighbors.
 
The = context is completely different =E2=80=93 see https://www.rfc-editor.org/rfc/rfc8510.txt
 
May be, it is possible to reuse Link = Local/Remote ID Sub-TLV (with Remote ID =3D 0) of Link TLV in link-local = scope LSA, but the RFC follows another approach - to use another Sub-TLV = and another TLV. I am not sure that we needed dedicated top-level TLV, = though idea to use separate Sub-TLV seems to be reasonable.
 
It is = also possible to use a sledge hammer to crack a nut=E2=80=A6. 
 
Acee 
 
Thank you!
 
Best = regards,
Alexander Okonnikov
 
=D0=9E=D1=82: Acee = Lindem (acee) <acee@cisco.com>
=D0=9E=D1=82=D0=BF=D1=80=D0=B0=D0=B2=D0=BB=D0=B5=D0=BD=D0=BE: =D0=B2=D1=82=D0=BE=D1= =80=D0=BD=D0=B8=D0=BA, =D1=84=D0=B5=D0=B2=D1=80=D0=B0=D0=BB=D1=8F 5, = 2019 20:21
=D0=9A=D0=BE=D0=BC=D1=83: Alexander Okonnikov; ccamp@ietf.org; lsr@ietf.org
=D0=A2=D0=B5=D0=BC=D0=B0: Re: [Lsr] OSPF TE Link = Local TLV 
 
Hi Alex, 
 
 
From: Lsr <lsr-bounces@ietf.org> on = behalf of Alexander Okonnikov <alexander.okonnikov@gmail.com>
Date: Tuesday, February 5, = 2019 at 7:48 AM
To: "ccamp@ietf.org" <ccamp@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>
Subject: [Lsr] OSPF TE Link = Local TLV
 
Hi,
 
I have question regarding RFC 4203, Section 3. That section = introduces top-level TLV type 4 (Link Local TLV) and, at the same time, = describes Link Local Identifier TLV. I guess that latter in fact is = Sub-TLV of Link Local TLV. Also, IANA Considerations section doesn't = mention that Sub-TLV, but only introduction of Link Local TLV. IANA has = no corresponding registry  - "Types for Sub-TLVs of Link Local TLV = (Value 4)".
 
I believe this example is actually wrong and section 3 should = refer to the top-level Link TLV (value 2) defined in RFC 3630. The Link = Local Identifier is the one advertised in Link Local/Remote Identifiers = Sub-TLV (type 11) defined in RFC 4203 section 1.1. 
 
Hope this = helps, 
Acee
 
Thanks in advance.
 
Best = regards,
Alexander = Okonnikov

= --Apple-Mail=_7612AE11-1B16-4D0A-8F4B-84DA97FDE92E-- From nobody Wed Feb 6 01:02:23 2019 Return-Path: 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 01F1D130DFA; Wed, 6 Feb 2019 01:02:22 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.643 X-Spam-Level: X-Spam-Status: No, score=-14.643 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.142, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-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 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 3IxSJKgEoRf4; Wed, 6 Feb 2019 01:02:19 -0800 (PST) Received: from aer-iport-4.cisco.com (aer-iport-4.cisco.com [173.38.203.54]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E805F129B88; Wed, 6 Feb 2019 01:02:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3770; q=dns/txt; s=iport; t=1549443739; x=1550653339; h=subject:to:references:cc:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=cI42MYCFYnNZWRycbOKpKuPLGYSTJOZ60TLjydZ4OpI=; b=irBnQovsxXIQk1rQC/BTqn7/jMzxr1jbPary9dpGlq98vuqRIcW94kzO zn4eVagGr1Nhvoj+ax0f0gpDT6jmEJTXjh1qfpjyZ6oWi2eiScXMYWE8+ QgQH3OaklEA7boYtObZ1g4L8WtTwsVDcmxqLcp6QeeNFkHRw6Xw40Enxg w=; X-IronPort-AV: E=Sophos;i="5.58,339,1544486400"; d="scan'208";a="9847055" Received: from aer-iport-nat.cisco.com (HELO aer-core-3.cisco.com) ([173.38.203.22]) by aer-iport-4.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Feb 2019 09:02:17 +0000 Received: from [10.147.24.60] ([10.147.24.60]) by aer-core-3.cisco.com (8.15.2/8.15.2) with ESMTP id x1692GCn027719; Wed, 6 Feb 2019 09:02:16 GMT To: Alexander Okonnikov , "Acee Lindem (acee)" References: <12BF6AD3-674E-47F5-BD05-040B33DD0354@cisco.com> <8085D050-8FF9-4E93-8218-802ED36C6481@gmail.com> Cc: "lsr@ietf.org" , "ccamp@ietf.org" From: Peter Psenak Message-ID: <073f26a0-5796-6439-b96a-299fc6e06499@cisco.com> Date: Wed, 6 Feb 2019 10:02:15 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <8085D050-8FF9-4E93-8218-802ED36C6481@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.147.24.60, [10.147.24.60] X-Outbound-Node: aer-core-3.cisco.com Archived-At: Subject: Re: [Lsr] OSPF TE Link Local TLV X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Feb 2019 09:02:22 -0000 Hi Alex, I believe you are right in saying that the RFC 4203 defined Link Local Identifier sub-TLV of the Link Local TLV, but did not do any IANA registration for it. thanks, Peter On 05/02/2019 20:40 , Alexander Okonnikov wrote: > Hi Acee, > > Yes, RFC 8510 provides alternative mechanism, but link identifier > discovery mechanism via link-local TE LSA is still valid. Hence, I think > that early mentioned issues need to be addressed. > > Thank you! > >> 5 февр. 2019 г., в 21:29, Acee Lindem (acee) > > напиÑал(а): >> >> Hi Alex, >> >> *From: *Alexander Okonnikov > > >> *Date: *Tuesday, February 5, 2019 at 12:59 PM >> *To: *Acee Lindem >, >> "ccamp@ietf.org " > >, "lsr@ietf.org " >> > >> *Subject: *Re: [Lsr] OSPF TE Link Local TLV >> >> Hi Acee, >> >> Per my understanding Link Local/Remote ID Sub-TLV is to be conveyed in >> area-scope LSA to uniquely identify link between pair of routers. For >> link-local scope another Sub-TLV was introduced, for discovery of link >> IDs by two neighbors. >> >> The context is completely different – >> see https://www.rfc-editor.org/rfc/rfc8510.txt >> >> May be, it is possible to reuse Link Local/Remote ID Sub-TLV (with >> Remote ID = 0) of Link TLV in link-local scope LSA, but the RFC >> follows another approach - to use another Sub-TLV and another TLV. I >> am not sure that we needed dedicated top-level TLV, though idea to use >> separate Sub-TLV seems to be reasonable. >> >> It is also possible to use a sledge hammer to crack a nut…. >> >> Acee >> >> Thank you! >> >> Best regards, >> Alexander Okonnikov >> >> ------------------------------------------------------------------------ >> *От:* Acee Lindem (acee) > >> *Отправлено:* вторник, Ñ„ÐµÐ²Ñ€Ð°Ð»Ñ 5, 2019 20:21 >> *Кому:* Alexander Okonnikov; ccamp@ietf.org >> ; lsr@ietf.org >> *Тема:* Re: [Lsr] OSPF TE Link Local TLV >> >> Hi Alex, >> >> >> *From: *Lsr > on >> behalf of Alexander Okonnikov > > >> *Date: *Tuesday, February 5, 2019 at 7:48 AM >> *To: *"ccamp@ietf.org " > >, "lsr@ietf.org " >> > >> *Subject: *[Lsr] OSPF TE Link Local TLV >> >> Hi, >> >> I have question regarding RFC 4203, Section 3. That section introduces >> top-level TLV type 4 (Link Local TLV) and, at the same time, describes >> Link Local Identifier TLV. I guess that latter in fact is Sub-TLV of >> Link Local TLV. Also, IANA Considerations section doesn't mention that >> Sub-TLV, but only introduction of Link Local TLV. IANA has no >> corresponding registry - "Types for Sub-TLVs of Link Local TLV (Value >> 4)". >> >> I believe this example is actually wrong and section 3 should refer to >> the top-level Link TLV (value 2) defined in RFC 3630. The Link Local >> Identifier is the one advertised in Link Local/Remote Identifiers >> Sub-TLV (type 11) defined in RFC 4203 section 1.1. >> >> Hope this helps, >> Acee >> >> Thanks in advance. >> >> Best regards, >> Alexander Okonnikov > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > From nobody Wed Feb 6 01:57:43 2019 Return-Path: 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 B8E51126C7E for ; Wed, 6 Feb 2019 01:57:42 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.643 X-Spam-Level: X-Spam-Status: No, score=-14.643 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.142, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-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 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 tb-MHNf1-VOr for ; Wed, 6 Feb 2019 01:57:40 -0800 (PST) Received: from aer-iport-4.cisco.com (aer-iport-4.cisco.com [173.38.203.54]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2A30912426E for ; Wed, 6 Feb 2019 01:57:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=8550; q=dns/txt; s=iport; t=1549447060; x=1550656660; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=2cO3KjCmdfVMDRnJfXo0RiKUcgV14HNmu4aX3VjqBz4=; b=L9UJ9/LncjC3K6ulXUkuQte1V0ov4/GlH/C0ADqsljNhHXuuPsFyctdZ A1t4Z3MPYQvscdbl3mbL7ZX+nYXREqZKcL3bthDd+WYUF6kcDygtU5XbP IKhNfXBl7UVGMxhlJaNcO/DmTHCiF6gR4/JRYbTClLmF+lyqFO9cFL/3W s=; X-IronPort-AV: E=Sophos;i="5.58,339,1544486400"; d="scan'208";a="9848451" Received: from aer-iport-nat.cisco.com (HELO aer-core-4.cisco.com) ([173.38.203.22]) by aer-iport-4.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Feb 2019 09:57:38 +0000 Received: from [10.147.24.60] ([10.147.24.60]) by aer-core-4.cisco.com (8.15.2/8.15.2) with ESMTP id x169vbGb021823; Wed, 6 Feb 2019 09:57:38 GMT To: Huaimo Chen , "Acee Lindem (acee)" , Christian Hopps , "lsr@ietf.org" References: <5316A0AB3C851246A7CA5758973207D463B3B9D8@sjceml521-mbx.china.huawei.com> <8378287F-27B9-4663-A22B-F8A2EC6C9FC3@cisco.com> <5316A0AB3C851246A7CA5758973207D463B46315@sjceml521-mbx.china.huawei.com> From: Peter Psenak Message-ID: Date: Wed, 6 Feb 2019 10:57:37 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <5316A0AB3C851246A7CA5758973207D463B46315@sjceml521-mbx.china.huawei.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-Outbound-SMTP-Client: 10.147.24.60, [10.147.24.60] X-Outbound-Node: aer-core-4.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Feb 2019 09:57:43 -0000 Hi Huaimo, On 03/02/2019 17:58 , Huaimo Chen wrote: > Hi Acee, > > > > I agree with you on keeping the signaling for two modes. The other > parts for the distributed solution need to be removed. There are no "other" parts specific for the distributed solution. draft-li-dyanmic-flooding defines: 1. the signalling that is common and used by both modes 2. distribution of the flooding-topology, which is specific to centralized mode 3. common behavior of the nodes that support the extension, which is independent of the mode of operation. thanks, Peter > > > > Best Regards, > > Huaimo > > *From:* Acee Lindem (acee) [mailto:acee@cisco.com] > *Sent:* Sunday, February 3, 2019 11:45 AM > *To:* Huaimo Chen ; Christian Hopps > ; lsr@ietf.org > *Subject:* Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] > > > > Hi Huaimo, > > > > See inline. > > > > *From: *Lsr > on > behalf of Huaimo Chen > > *Date: *Saturday, February 2, 2019 at 12:27 AM > *To: *Christian Hopps >, > "lsr@ietf.org " > > *Subject: *Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] > > > > Hi Everyone, > > > > We proposed the distributed solution first, and Tony proposed the > centralized solution first. Tony added the distributed solution (except > for the algorithms to compute flooding topology) into his draft. And > then we added the centralized solution into our draft. The latest > versions of the two drafts have largely converged at least at the high > level to a solution for solving the same problem. > > > > Our draft has multiple key technical advantages over Tony’s draft as we > described in our email to the LSR list, which are summarized below: > > 1. It uses a fraction of flooding resource (i.e., it is multiple > times more efficient in flooding topology encoding); > > 2. It provides fault tolerance to multiple failures, minimizing > impact on network convergence, thus minimizing traffic lose; and > > 3. It is simpler and needs less processing time (i.e., faster and > more efficient) in multiple scenarios. > > Based on the technical merits, our draft should be moved forward. > However, Chair proposed to move Tony’s draft forward and have us work on > a distributed algorithm as we started with. > > > > I think that the distributed solution in Tony’s draft needs to be > removed and they work on the centralized solution. We remove the > centralized solution from our draft and work on the distributed solution. > > > > I’m against “cutting the baby in half” given that the signaling for the > distributed solution is a proper subset of what is required for the > centralized solution. It is undesirable to have different signaling for > the two modes. For the distributed algorithm you are proposing, do see > problems with the signaling? > > > > Thanks, > > Acee > > > > Best Regards, > > Huaimo > > > > -----Original Message----- > > From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of Christian Hopps > > Sent: Friday, February 1, 2019 7:26 AM > > To: lsr@ietf.org > > Cc: chopps@chopps.org > > Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] > > > > > > Summary of where we are at with dynamic flooding reduction: > > > > - We have a well written original work that came first and described the > problems as well as a TLVs to allow for a centralized solution > (draft-li-dyanmic-flooding). We do not need to standardize the > centralized algorithm. > > > > - A small change to this work allowed for distributed algorithms and for > outside work on distributed algorithms to continue in parallel. > > > > - We have another original work that started primarily as a distributed > algorithm > > (draft-cc-ospf-flooding-reduction) > > > > - Finally we also have: > > - Cross-pollination of ideas. > > - Failed attempts at merging. > > - An authors list "Arms-Race". > > > > Moving forward: > > > > - During IETF 103 I proposed we have no conflict if we: > > > > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > > 2) have authors of draft-cc-lsr-flooding-reduction work on a > distributed algorithm as they started with. > > > > - Acee agreed during the meeting (as chair) that this was the best way > forward. We had some agreement form the floor as well.. > > > > - Any good ideas regarding the distribution of a centralized topology > can be debated and added (with appropriate attribution) to the base > document after we adopt one. > > > > - This is what happens when we adopt a document as WG work, we work on it. > > > > - The original authors of the distributed solution can continue to work > on their distributed algorithm in a separate document which would also > need standardization. > > > > Does anyone see a serious problem with this path forward? > > > > Thanks, > > Chris & Acee. > > LSR Chairs. > > > > Christian Hopps > writes: > > > >> We've had the authors of the individual conflicting drafts take a shot > at merging their work. > >> > >> This has failed. > >> > >> Here is the full history (which I also summarized during IETF103 as > well). I will send a second email discussing this. > >> > >> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and > drfat-li-dynamic-flooding-isis > >> published centralized solution. > >> > >> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and > draft-cc-ospf-flooding-reduction > >> published distributed solution. > >> - mention of centralized solution asserting it is not good choice. > >> > >> - IETF 101 (Mar 2018) > >> - Video: > https://www.youtube.com/watch?v=qHmT4ytMn4w&list=PLC86T-6ZTP5j_HaBNdfPbgxGIp22cnaWS > >> - Minutes: > https://datatracker.ietf.org/meeting/101/materials/minutes-101-lsr-00 > >> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > >> - Generally well received. > >> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > >> - Serious problems immediately found during presentation -- not > fully baked. > >> > >> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) > >> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) > >> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised > >> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) > >> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. > >> - Does not specify distributed algorithm only how to indicate one in > use, small change. > >> > >> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published > >> > >> - IETF 102 (Jul 14, 2018) > >> - draft-li-dynamic-flooding-05 presented. > >> - draft-cc-ospf-flooding-reduction-02 presented. > >> > >> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) > >> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. > >> > >> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) > >> > >> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) > >> > >> - IETF 103 (Nov 3, 2018) > >> > >> - Chairs give direction > >> > >> - draft-li-lsr-dynamic-flooding-05 having come first, being well > written and not > >> specifying a distributed algorithm (merely allowing for one) is > the correct vehicle > >> to adopt as a base document. > >> > >> - Distributed algorithm work (the original basis for > draft-cc-ospf-flooding-reduction) > >> should continue as a separate document form the base which would > thus we have no > >> conflicts. > >> > >> - In the meantime the authors try and merge work, this fails. > >> > >> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) > >> > >> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) > >> > >> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) > > > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > From nobody Wed Feb 6 02:11:38 2019 Return-Path: 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 3BCA3124D68 for ; 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06 Feb 2019 10:11:32 +0000 Received: from [10.147.24.60] ([10.147.24.60]) by aer-core-3.cisco.com (8.15.2/8.15.2) with ESMTP id x16ABVrr005626; Wed, 6 Feb 2019 10:11:32 GMT To: Robert Raszuk , Tony Li References: <5316A0AB3C851246A7CA5758973207D463B462E0@sjceml521-mbx.china.huawei.com> <04B9EB6B-AD78-4FFA-A292-9AFC06CDC487@tony.li> Cc: Huaimo Chen , "chopps@chopps.org" , David Allan I , "li_zhenqiang@hotmail.com" , "lsr@ietf.org" From: Peter Psenak Message-ID: <3d2c42f5-749d-0861-7fa5-8e9cecf5e8c9@cisco.com> Date: Wed, 6 Feb 2019 11:11:31 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-Outbound-SMTP-Client: 10.147.24.60, [10.147.24.60] X-Outbound-Node: aer-core-3.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Feb 2019 10:11:37 -0000 Hi Robert, On 03/02/2019 21:37 , Robert Raszuk wrote: > > I fully agree and support proceeding with draft-li-dyanmic-flooding and > to include protocol extensions in it for centralized topology > propagation as well as basic hooks like "execute dynamic protocol number > X" for distributed calculations. > > However one may observe that separate distributed algorithms may define > their own protocol extensions and they should not break the above in any > way. > > Then there is already some requirements of building two disjoined > topologies in any rich ECMP DC fabric one say for primary paths the > other for backup flows. (Case of active-active dual streaming > applications). Question arises if this would be addressed also as part > of basic spec, be combined with one or many of distributed algorithms or > will require yet one more document which in turn will "extend" all of > the above ? primary/backup topologies are used for transmitting user data, not necessarily the flooding data. I don't see how they are related to the flooding topology, which is used for flooding only. To the point, if a new distributed algorithm is defined that needs more data to be signaled, then we will extend the existing signaling. I don't see that being a problem. The way the signaling is defined in draft-li-lsr-dynamic-flooding does allow for such thing. thanks, Peter > And before anyone suggests multi instance approach with > logical or physical link separation it is not the right direction here. > If anything perhaps MTR or SR come a bit closer. > > Kind regards, > Robert. > > > On Sun, Feb 3, 2019 at 9:14 PM > wrote: > > > I think that this discussion would be greatly clarified if we > clearly separated the discussion between > > a) the algorithm for computing the flooding topology, and > b) the signaling to indicate how to proceed. > > I think that we are all in agreement that the algorithms can and > should be separated from the signaling. > > I think that we are all in agreement that each algorithm should be > independent. > > I’m of the opinion that the centralized signaling is a bit more > extensive than the signaling for the distributed mode, but that > there is also considerable overlap and that things would > be unnecessarily redundant if we were to separate them. I believe > that we are not in disagreement about the basics for the distributed > signaling. > > If you disagree with this, please clearly articulate why you feel > the signaling should be separated. > > Regards, > Tony > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > From nobody Wed Feb 6 04:33:04 2019 Return-Path: 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 3D4C1128D09 for ; Wed, 6 Feb 2019 04:33:03 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2 X-Spam-Level: X-Spam-Status: No, score=-2 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_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=raszuk.net 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 LFa0_RRuJmrS for ; Wed, 6 Feb 2019 04:32:58 -0800 (PST) Received: from mail-qt1-x835.google.com (mail-qt1-x835.google.com [IPv6:2607:f8b0:4864:20::835]) (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 5B8C8126C01 for ; Wed, 6 Feb 2019 04:32:58 -0800 (PST) Received: by mail-qt1-x835.google.com with SMTP id b8so7558454qtr.9 for ; Wed, 06 Feb 2019 04:32:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=raszuk.net; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=gyxlxA05cTA3rriLuwN+UMK1/DEraincrkXENXtWmIg=; b=eeHsl7La7iaDt9GxzG22ARrr13ONxQsC1X8IBPTRKLKkgmzD1Fd0rZIkaWS+nbz+iE RGS7s6bE8S51a01B3YGzXlnMfefOvWMzaPnwfTNF+ed9PI5+eMhgLxk2s1M48G2bTuya ZyfDQTlRr+ykNJzBLh7wqHEQbJU4je8afr9SDoFf1pRMnV+VCnDv3j9kQX+X5QJl+FHZ HmhCZWjKDGNAgcwJgMx61wM9IDLz+P3f5Zws8byqZvL+cPVrI6BZvpTVlfpk4+Kn17y5 j84B+G5SZFAlnfxAIATKTIAdCqHKlX06iR4miSsb2SSuUZjaZJ+arYdwf/6F0jf9mZAQ hCZw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=gyxlxA05cTA3rriLuwN+UMK1/DEraincrkXENXtWmIg=; b=nh/bBs4cumXPFBgo4tEkqJF9z8EED+/OPlr0yhpmgLlIx3Ip2CbLLkvEYYVJk5wNUK O2vDRLVaNCzdvLz+SH6MEIfK2VfXQGaceHa9dTRskVsaaIbj3iMxsN6Kzj1w+n9x5Q96 CoGQGlLlsXXhOfcUlh3veUwbkJ7FrScxTfW1PL5oT5HMFgCOlEBNRcsGEXOzYzyrO/QI KoML3p+yLZtGRqDTLD0HvTbi5byDMU6orfzD+wMEMJKGO8DKnbGknZnCBDbNSLFcOvv4 HS7rtUSoLaC/eYb3pE/TF0nLOC78rFgmdPqnblllZujR1+6JG3WIcHcMFMLUSn3uxH8w fUIg== X-Gm-Message-State: AHQUAubRYK/TQNCPldRODYjSuHQgnJsxWXlV42njao7yaL/wTzfrkRsO wZuLoRqDIqEjdsGh4IDOn0jJoKsBCT/q81fnHjVD5A== X-Google-Smtp-Source: AHgI3IYMI2zN+5PzjyomW3HJO5MTLV+CBmGL8bN1W4pOIeJgkq15S4PqbuSxkRsnlkqkw+pwwek0RrIAry5ze8aMENs= X-Received: by 2002:a0c:a602:: with SMTP id s2mr1914978qva.69.1549456377449; Wed, 06 Feb 2019 04:32:57 -0800 (PST) MIME-Version: 1.0 References: <5316A0AB3C851246A7CA5758973207D463B462E0@sjceml521-mbx.china.huawei.com> <04B9EB6B-AD78-4FFA-A292-9AFC06CDC487@tony.li> <3d2c42f5-749d-0861-7fa5-8e9cecf5e8c9@cisco.com> In-Reply-To: <3d2c42f5-749d-0861-7fa5-8e9cecf5e8c9@cisco.com> From: Robert Raszuk Date: Wed, 6 Feb 2019 13:32:41 +0100 Message-ID: To: Peter Psenak Cc: Tony Li , "lsr@ietf.org" Content-Type: multipart/alternative; boundary="000000000000f91999058138ecba" Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Feb 2019 12:33:03 -0000 --000000000000f91999058138ecba Content-Type: text/plain; charset="UTF-8" Hi Peter, Many thx for your comment. What I had in mind here was use of multi instance (=2) over very reach physical topologies. So when we construct flooding graph for each such instance - even in centralized mode - the intention was to avoid flooding to take common links (just to reduce the impact of any failure to have effect on both instances). Yes of course data paths are different from flooding graph so I was just talking about the latter. I know that perhaps this should be moved to a different thread - the only reason why I mentioned about it here was that it is not immediately obvious to me if extensions which we have today defined in draft-li will be sufficient. Perhaps for centralized indeed they would be just fine as central graph compute oracle could be smart enough to address it. For distributed I am not sure. I did not want to derail the main topic though so let's shift it for other chat. Kind regards, Robert. primary/backup topologies are used for transmitting user data, not > necessarily the flooding data. I don't see how they are related to the > flooding topology, which is used for flooding only. > > To the point, if a new distributed algorithm is defined that needs more > data to be signaled, then we will extend the existing signaling. I don't > see that being a problem. The way the signaling is defined in > draft-li-lsr-dynamic-flooding does allow for such thing. > > thanks, > Peter > --000000000000f91999058138ecba Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Peter,

Many thx for= your comment.=C2=A0

What I had in mind here was u= se of multi instance (=3D2) over very reach physical topologies. So when we= construct flooding graph for each such instance - even in centralized mode= - the intention was to avoid flooding to take common links (just to reduce= the impact of any failure to have effect on both instances). Yes of course= data paths are different from flooding graph so I was just talking about t= he latter.=C2=A0

I know that perhaps this should b= e moved to a different thread - the only reason why I mentioned about it he= re was that it is not immediately obvious to me if extensions which we have= today defined in draft-li will be sufficient. Perhaps for centralized inde= ed they would be just fine as central graph compute oracle could be smart e= nough to address it. For distributed I am not sure.=C2=A0

I did not want to derail the main topic though so let's shift i= t for other chat.

Kind regards,
Robert.<= /div>

primary/backup topologies are used for transmit= ting user data, not
necessarily the flooding data. I don't see how they are related to the =
flooding topology, which is used for flooding only.

To the point, if a new distributed algorithm is defined that needs more data to be signaled, then we will extend the existing signaling. I don'= t
see that being a problem. The way the signaling is defined in
draft-li-lsr-dynamic-flooding does allow for such thing.

thanks,
Peter
--000000000000f91999058138ecba-- From nobody Thu Feb 7 10:04:33 2019 Return-Path: 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 A01DF129C6A; Thu, 7 Feb 2019 10:04:10 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.099 X-Spam-Level: X-Spam-Status: No, score=-0.099 tagged_above=-999 required=5 tests=[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_PASS=-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 iJ8zcd-5-RYa; Thu, 7 Feb 2019 10:04:09 -0800 (PST) Received: from mail-ed1-x530.google.com (mail-ed1-x530.google.com [IPv6:2a00:1450:4864:20::530]) (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 D5BAD124C04; Thu, 7 Feb 2019 10:04:08 -0800 (PST) Received: by mail-ed1-x530.google.com with SMTP id h50so638149ede.5; Thu, 07 Feb 2019 10:04:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=H38RKqSHzr7s498fNgf17405H9aeYJGZJuSJ1JoHlxE=; b=KwlH7cqwAd1m743uQ3lzxd4uwy+ohaKXEXs4Nw3w1tMG5xMvxj6ibmOxY93fpPmK9h mpSV7Oab785yMkFjdMdpvluOpEYdNB3EkWuFlSpr8DmV939oUDDn/+MecTfYWHjvygzQ lMO9WSxg5MpPAvH7qTEtqQyzDtdGRCPBqu4FHA3ghb2htVqFEA3pykEjLIbQ+pUPcvrk M62IWAd8U7+YKYOn+GcErKDDY90Ic89dqjnWIPKWNctAzh6Dtr49Fj+N94J2I3IOKAxV 01mU5+Q42aNHT8wdCe+bYNzFuWWYZZdO9YxP075S/ZKINfc9WuwsSArC2lvmW8DSoAO5 s8sQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=H38RKqSHzr7s498fNgf17405H9aeYJGZJuSJ1JoHlxE=; b=Y6vu4W8vX2HMYYMbZT/CTIJFHv2UngaLs7DvKOhjZ6Zxu00ml3xoQzHt8la9DQiNa+ O2sbZYG45jEieKGeBsnJCnn8wQvg25OyGNzKhDhLJnQudLPU2M1M3tJYPmI4K8McsG1K joXat6DFPE8eo/CTgAVzfgHtsEeXMlux1w1QmjWURFt4TkXH3Bxk3S5idbCoIG0m1wNv S8r3LDBSf48RQpo4t/l9CLjU8kuNPwlCz/rwZ4JEbrjUrjiFGYk8/gNWdYWX+wkQuylS cw2vJzITB/KGYC86+iq30UTr9w0G7vxu7Q6ls2vsQ5GG8sgqlRQ8MDCgN6V6T0sVx0v0 rV/A== X-Gm-Message-State: AHQUAuag5zrMo4ELMsjsiPQ/blCVwPyNNHgLF61P198rJ2wBWRjaRIDn DX9YH3g6SrdOmXpUPndYOb7+obyG9ucMnF7Od3AToGwN X-Google-Smtp-Source: AHgI3IbPIGW38bc7XjKBTGi4cRJHRJs9aKBgqKaE1b8pZs+iqmPn5ZxgLLhYVE/apxkoJdzN1Q9PM368tmddBrowJH8= X-Received: by 2002:a50:b85d:: with SMTP id k29mr13561464ede.86.1549562646966; Thu, 07 Feb 2019 10:04:06 -0800 (PST) MIME-Version: 1.0 From: Tony Przygienda Date: Thu, 7 Feb 2019 10:03:30 -0800 Message-ID: To: lsr@ietf.org, BIER WG , pim@ietf.org Content-Type: multipart/alternative; boundary="000000000000213936058151abba" Archived-At: Subject: [Lsr] Cross post since it may interest fabric/multicast people to join next weeks' discussion X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Feb 2019 18:04:13 -0000 --000000000000213936058151abba Content-Type: text/plain; charset="UTF-8" Cross-post to other groups given today's RIFT discussion: Despite my long resistance to introduce native multicast into RIFT based on M-OSPF scar tissue ;-) it seems it falls out almost naturally along the lines of RPL after having pushed on it today with Pascal. We would end up with a single (*,*) tree in the top of fabric and the prunning happens naturally when packets go southbound. We could even mix multicast capable and non-capable nodes easily. *Well, I encourage e'one interested in multicast, especially on fabrics to join next week discussion to influence/double-check the upcoming solution.* Today's recording: https://www.dropbox.com/sh/03bxldg5xu6zkos/AABRjx-gNba0OagXOMDftAb-a?dl=0 Multicast discussion starts late, scroll forward to 00:52:09 basically thanks -- tony --000000000000213936058151abba Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Cross-post to other groups given today's RIFT dis= cussion:

Despite my long resistance to introdu= ce native multicast into RIFT based on M-OSPF scar tissue ;-) it=20 seems it falls out almost naturally along the lines of RPL after having pus= hed on it today with Pascal. We would end up with a single=20 (*,*) tree in the top of fabric and the prunning happens naturally when=20 packets go southbound. We could even mix multicast capable and non-capable nodes easily. Well, I encourage e'one interested in multicast, espe= cially on=20 fabrics to join next week discussion to influence/double-check the upcoming= solution.

Today's recording:
<= /div>


=
Multicast discussion starts late, scroll forward to 00:52:09 bas= ically

thanks

-= - tony

--000000000000213936058151abba-- From nobody Fri Feb 8 02:25:46 2019 Return-Path: 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 1A7B412D4E7; Fri, 8 Feb 2019 02:25:45 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 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_PASS=-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 SO6Oz-F7GHni; Fri, 8 Feb 2019 02:25:42 -0800 (PST) Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) (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 F34CA12867A; Fri, 8 Feb 2019 02:25:38 -0800 (PST) Received: by mail-wm1-x32b.google.com with SMTP id v26so2811743wmh.3; Fri, 08 Feb 2019 02:25:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=VI3vuOdN1cIkwaqYPkWBkcRu4zcjs9bj72TkWT1gjXg=; b=nA+58tXRIeSNDjKNW5e9wH86bOVmkSGFF00ihXCb7lg7jBXoJTWtTvaB1yJ2AgDrLP vJdYdxrebRhUOfL4ofq05gW9EajKr2W139LpMKmK7tlScBi8eQ5uC/XLMHjvK5cu6DC9 hC8fv+7drnMxxQyIjqzspC7GDpbzQqjERoVF0d4JGSr5jrMi39VNEXHW30got7dbDAuG lStK8sz7avn717Qc8NjIowWJDjAjf4TE6UvYNzobkeUW5KZUrmbUWM1KrgZDLmRJ6xR1 8QKe3Veym7skonfAffP249yu1M/VbbdqWMWjZmEiOgBDESiZD5NYqj3T0CAJh4CX2l6X Vlqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=VI3vuOdN1cIkwaqYPkWBkcRu4zcjs9bj72TkWT1gjXg=; b=UaAlJEp9dvkn5NkPsOcKq8rCAEzShhkVInJq72zNS60lNfdgzl9k4tgu9LPJz5VihC hEdNmt/MSRQQldVVyXS2XYXcx3Jk59qcC0N9gUMIQX7n6pr1Ud9kfBzJzJPYf84Ct81Y f8sZ1OmL/PIWKMcfAXaYMI0xjVXhwTTwLYphZ71NjsaPnD8y2F0U2hidmFo8k5B2hKOn AG033hvkd9CUqQuWoCk8a6dZOA0cUc5rwYd7/QUfa1DM0R0+waIQ+pTxeK5xvI24GbUh iCPsV598Isitlc00OBFO/EZ8awK5yTPvH3j5slEqAbccx1HdnY5a6y4cF/2TOF47Q2Ds flAQ== X-Gm-Message-State: AHQUAuaHw3TY/1xQksnNLTngX6L7PhH/meOMCSGNSQcvt1JLs3/3kG2J Eir32YbAGlfqkIW3NYKn79Y= X-Google-Smtp-Source: AHgI3IZgy5IdRJI7/E+IdvzWJ5DGXd0brlTXNxoqYE/uZbYM4bKGoY0UgnUIlXEDwKhaoXJ/2uRYlQ== X-Received: by 2002:a7b:c218:: with SMTP id x24mr11026732wmi.58.1549621537347; Fri, 08 Feb 2019 02:25:37 -0800 (PST) Received: from [10.161.106.179] ([212.65.85.100]) by smtp.gmail.com with ESMTPSA id c9sm1181611wrs.84.2019.02.08.02.25.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 08 Feb 2019 02:25:36 -0800 (PST) From: Alexander Okonnikov Message-Id: Content-Type: multipart/alternative; boundary="Apple-Mail=_7384FBBD-C0CE-4F7B-9E9B-FE66D96ADA80" Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) Date: Fri, 8 Feb 2019 13:25:34 +0300 In-Reply-To: <3FD1122C-C906-4ACA-A01C-3265F6F83D02@cisco.com> Cc: "lsr@ietf.org" , "draft-ietf-ospf-xaf-te@ietf.org" , Gunter Van de Velde , "Ketan Talaulikar (ketant)" To: "Acee Lindem (acee)" References: <3FD1122C-C906-4ACA-A01C-3265F6F83D02@cisco.com> X-Mailer: Apple Mail (2.3445.9.1) Archived-At: Subject: Re: [Lsr] "OSPF Routing with Cross-Address Family Traffic Engineering Tunnels" - draft-ietf-ospf-xaf-te-05 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Feb 2019 10:25:45 -0000 --Apple-Mail=_7384FBBD-C0CE-4F7B-9E9B-FE66D96ADA80 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Acee, For me current version doesn't change the solution. My comments are = follow: 1. Introduction "TE Extensions to OSPFv2 [RFC3630] and OSPFv3 [RFC5329] have been = described to support intra-area TE in IPv4 and IPv6 networks, = respectively. In both cases, the TE database provides a tight coupling = between the routed protocol and advertised TE signaling information. In = other words, any use of the TE link state database is limited to IPv4 = for OSPFv2 [RFC2328] and IPv6 for OSPFv3 [RFC5340]." What is meant for "routed protocol"? Is it passenger protocol of RSVP-TE = LSPs, protocol used as a transport for RSVP signaling, protocol for = which OSPFv2/OSPFv3 calculate routes? What does mean "TEDB is limited = to IPv4/IPv6"? Is it limited to choose IPv4/IPv6 as a transport for = RSVP-TE LSP signaling? "For example, an LSP created based on MPLS TE information propagated by = an OSPFv2 instance can be used to transport both IPv4 and IPv6 traffic, = as opposed to using both OSPFv2 and OSPFv3 to provision a separate LSP = for each address family." An LSP created based on TEDB from OSPFv2 can be used to transport IPv4 = and IPv6 without extensions, proposed in the draft. We are not obligated = to signal RSVP-TE LSPs from OSPFv2 TEDB for IPv4 traffic and other = RSVP-TE LSPs from OSPFv3 TEDB for IPv6 traffic. RSVP-TE LSPs signaled = based on TEDB from either - OSPFv2 or OSPFv3 - can be used for transport = either - IPv4 or IPv6 - traffic. I.e. payload of RSVP-TE LSP and = transport protocol for its signaling are not obligated to be the same. I = guess that authors meant that an LSP, based on MPLS TE from OSPFv2, can = be used for calculation of shortcuts by OSPFv2, and not by OSPFv3. Authors provide description of possible solution with common Router ID. = I propose similar solution with advertising both Router IDs (OSPFv2 and = OSPFv3) in both instances (OSPFv2 and OSPFv3). Latter overcomes issues = with correctness of configuration and out of sync. Also, I don't = understand how can possible solution with common Router ID have problem = with different placement of ABRs in OSPFv2 and OSPFv3. We are talking = about intra-area LSPs, hence tail-end router should be within area in = both instances. 3. Operation "A node that implements X-AF routing SHOULD advertise, in the = corresponding Node Local Address sub-TLV, all X-AF IPv4 and IPv6 = addresses local to the router that can be used by Constrained SPF (CSPF) = to calculate MPLS TE LSPs." =46rom section 1 we assume that X-AF is used for calculation of = shortcuts. Why does the draft say here about calculation of TE LSPs by = CSPF? "If the Node Attribute TLV carries both the Node IPv4 Local Address = sub-TLV and the Node IPv6 Local Address sub-TLV, then the X-AF component = MUST be considered for the consolidated calculation of MPLS TE LSPs." The same. Thanks. > 31 =D1=8F=D0=BD=D0=B2. 2019 =D0=B3., =D0=B2 2:03, Acee Lindem (acee) = =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB(=D0=B0): >=20 > Hi Gunter, Alex, Ketan,=20 > I hoping everyone who commenting on the previous version is happy with = the version. I=E2=80=99m extending the WG last call another week to see = if we have any objections to this version. > Thanks, > Acee > =20 > From: Lsr > on = behalf of Acee Lindem > > Date: Monday, January 7, 2019 at 11:47 AM > To: "lsr@ietf.org " > > Cc: "draft-ietf-ospf-xaf-te@ietf.org = " = > > Subject: [Lsr] "OSPF Routing with Cross-Address Family Traffic = Engineering Tunnels" - draft-ietf-ospf-xaf-te-05 > =20 > This begins an LSR WG last call for the subject draft. Please send = your > comments to this list prior to 12:00 AM GMT, January 22nd, 2019. > =20 > Note that the second IPR poll was completed in December. > =20 > Thanks, > Acee --Apple-Mail=_7384FBBD-C0CE-4F7B-9E9B-FE66D96ADA80 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi = Acee,

For me current = version doesn't change the solution. My comments are follow:

1. =  Introduction

"TE Extensions to OSPFv2 [RFC3630] and OSPFv3 [RFC5329] have = been described to support intra-area TE in IPv4 and IPv6 networks, = respectively.  In both cases, the TE database provides a tight = coupling between the routed protocol and advertised TE signaling = information.  In other words, any use of the TE link state database = is limited to IPv4 for OSPFv2 [RFC2328] and IPv6 for OSPFv3 = [RFC5340]."

What= is meant for "routed protocol"? Is it passenger protocol of RSVP-TE = LSPs, protocol used as a transport for RSVP signaling, protocol for = which OSPFv2/OSPFv3 calculate routes?  What does mean "TEDB is = limited to IPv4/IPv6"? Is it limited to choose IPv4/IPv6 as a transport = for RSVP-TE LSP signaling?

"For example, an LSP created based on MPLS TE information = propagated by an OSPFv2 instance can be used to transport both IPv4 and = IPv6 traffic, as opposed to using both OSPFv2 and OSPFv3 to provision a = separate LSP for each address family."

An LSP created based on TEDB from = OSPFv2 can be used to transport IPv4 and IPv6 without extensions, = proposed in the draft. We are not obligated to signal RSVP-TE LSPs from = OSPFv2 TEDB for IPv4 traffic and other RSVP-TE LSPs from OSPFv3 TEDB for = IPv6 traffic. RSVP-TE LSPs signaled based on TEDB from either - OSPFv2 = or OSPFv3 - can be used for transport either - IPv4 or IPv6 - traffic. = I.e. payload of RSVP-TE LSP and transport protocol for its signaling are = not obligated to be the same. I guess that authors meant that an LSP, = based on MPLS TE from OSPFv2, can be used for calculation of shortcuts = by OSPFv2, and not by OSPFv3.

Authors provide description of possible = solution with common Router ID. I propose similar solution with = advertising both Router IDs (OSPFv2 and OSPFv3) in both instances = (OSPFv2 and OSPFv3). Latter overcomes issues with correctness of = configuration and out of sync. Also, I don't understand how can possible = solution with common Router ID have problem with different placement of = ABRs in OSPFv2 and OSPFv3. We are talking about intra-area LSPs, hence = tail-end router should be within area in both instances.


3.  Operation

"A node that implements X-AF routing = SHOULD advertise, in the corresponding Node Local Address sub-TLV, all = X-AF IPv4 and IPv6 addresses local to the router that can be used by = Constrained SPF (CSPF) to calculate MPLS TE LSPs."

=46rom section 1 we = assume that X-AF is used for calculation of shortcuts. Why does the = draft say here about calculation of TE LSPs by CSPF?

"If the Node Attribute = TLV carries both the Node IPv4 Local Address sub-TLV and the Node IPv6 = Local Address sub-TLV, then the X-AF component MUST be considered for = the consolidated calculation of MPLS TE LSPs."

The same.


Thanks.


31 = =D1=8F=D0=BD=D0=B2. 2019 =D0=B3., =D0=B2 2:03, Acee Lindem (acee) <acee@cisco.com> = =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB(=D0=B0):

Hi Gunter, Alex, Ketan, 
I hoping everyone who commenting = on the previous version is happy with the version. I=E2=80=99m extending = the WG last call another week to see if we have any objections to this = version.
Thanks,
Acee
 
From: Lsr <lsr-bounces@ietf.org> on behalf of Acee Lindem <acee@cisco.com>
Date: Monday, January 7, 2019 = at 11:47 AM
To: "lsr@ietf.org" <lsr@ietf.org>
Cc: "draft-ietf-ospf-xaf-te@ietf.org" <draft-ietf-ospf-xaf-te@ietf.org>
Subject: [Lsr] "OSPF Routing = with Cross-Address Family Traffic Engineering Tunnels" - = draft-ietf-ospf-xaf-te-05
 
This begins an = LSR WG last call for the subject draft. Please send your
comments to this list prior to = 12:00 AM GMT, January 22nd, 2019.
 
Note that the second IPR poll was = completed in December.
 
Thanks,
Acee

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08 Feb 2019 17:00:58 +0000 Received: from XCH-RTP-011.cisco.com (xch-rtp-011.cisco.com [64.101.220.151]) by rcdn-core-10.cisco.com (8.15.2/8.15.2) with ESMTPS id x18H0wwx023596 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Fri, 8 Feb 2019 17:00:58 GMT Received: from xch-rtp-015.cisco.com (64.101.220.155) by XCH-RTP-011.cisco.com (64.101.220.151) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 8 Feb 2019 12:00:57 -0500 Received: from xch-rtp-015.cisco.com ([64.101.220.155]) by XCH-RTP-015.cisco.com ([64.101.220.155]) with mapi id 15.00.1395.000; Fri, 8 Feb 2019 12:00:57 -0500 From: "Acee Lindem (acee)" To: "draft-wang-lsr-ospf-prefix-originator-ext@ietf.org" CC: "lsr@ietf.org" Thread-Topic: IPR Poll on "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 Thread-Index: AQHUv8/c2W3nHd03h0O1/O0ZW1Uqug== Date: Fri, 8 Feb 2019 17:00:57 +0000 Message-ID: <0CFE25DF-585A-4DDF-95B0-FA9FBBD1F3F7@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.116.152.197] Content-Type: multipart/alternative; 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l=1050; q=dns/txt; s=iport; t=1549793221; x=1551002821; h=subject:to:references:cc:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=+Asq4wdCFhq6+CnDgKLg28Py1UgtQy5COHToXrdVKCU=; b=Huq6lVfu1WDoLIUdQQ1i9Q3t4YK3/DeIfSsxWI221uTx20/AYLnNaflG Qct8HxqzJpmEyqo6O4dzvRGnFrOZTn5ARTyiFIpzmGXrhvY15ot5wJVzo WnBhKvHXD2ARJ3tEimvVLrl09uPW+/iQdbY5I0Jf/6zeXAdh951M6ilna w=; X-IronPort-AV: E=Sophos;i="5.58,354,1544486400"; d="scan'208";a="9989812" Received: from aer-iport-nat.cisco.com (HELO aer-core-4.cisco.com) ([173.38.203.22]) by aer-iport-1.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Feb 2019 10:06:58 +0000 Received: from [10.60.140.54] (ams-ppsenak-nitro5.cisco.com [10.60.140.54]) by aer-core-4.cisco.com (8.15.2/8.15.2) with ESMTP id x1AA6wij017334; Sun, 10 Feb 2019 10:06:58 GMT To: "Acee Lindem (acee)" , "draft-wang-lsr-ospf-prefix-originator-ext@ietf.org" References: <0CFE25DF-585A-4DDF-95B0-FA9FBBD1F3F7@cisco.com> Cc: "lsr@ietf.org" From: Peter Psenak Message-ID: <28986f80-4f02-5b70-8445-3c2d2efdb880@cisco.com> Date: Sun, 10 Feb 2019 11:06:58 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <0CFE25DF-585A-4DDF-95B0-FA9FBBD1F3F7@cisco.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.60.140.54, ams-ppsenak-nitro5.cisco.com X-Outbound-Node: aer-core-4.cisco.com Archived-At: Subject: Re: [Lsr] IPR Poll on "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Feb 2019 10:07:04 -0000 Hi Acee, not aware of any IPR related to this draft. thanks, Peter On 08/02/2019 18:00 , Acee Lindem (acee) wrote: > Authors, > > > > In preparation for a WG adoption call: > > > > Are you aware of any IPR relating to > https://datatracker.ietf.org/doc/draft-wang-lsr-ospf-prefix-originator-ext? > If so, has this IPR been disclosed in compliance with IETF IPR rules > (see RFCs 3979, 4879, 3669 and 5378 for more details). If you are listed > as a document author or contributor please respond to this email > regardless of whether or not you are aware of any relevant IPR. *The > response needs to be sent to the LSR WG mailing list.* The document will > not advance to the next stage until a response has been received from > each author and contributor. If you are on the LSR WG email list but are > not listed as an author or contributor, then please explicitly respond > only if you are aware of any IPR that has not yet been disclosed in > conformance with IETF rules. > > > > Thanks, > Acee > > > > > From nobody Mon Feb 11 00:47:26 2019 Return-Path: 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 31AEC131053 for ; Mon, 11 Feb 2019 00:47:18 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 lR9u6HEEPxR6 for ; Mon, 11 Feb 2019 00:47:15 -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 27B3013104E for ; Mon, 11 Feb 2019 00:47:15 -0800 (PST) Received: from lhreml701-cah.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id 005BE7E5D6511101347D for ; Mon, 11 Feb 2019 08:47:12 +0000 (GMT) Received: from NKGEML413-HUB.china.huawei.com (10.98.56.74) by lhreml701-cah.china.huawei.com (10.201.108.42) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 11 Feb 2019 08:47:11 +0000 Received: from NKGEML515-MBX.china.huawei.com ([fe80::a54a:89d2:c471:ff]) by NKGEML413-HUB.china.huawei.com ([10.98.56.74]) with mapi id 14.03.0415.000; Mon, 11 Feb 2019 16:47:01 +0800 From: "Dongjie (Jimmy)" To: Lizhenbin , Christian Hopps , "lsr@ietf.org" Thread-Topic: =?gb2312?B?W0xzcl0gtPC4tDogIE1vdmluZyBGb3J3YXJkIFtSZTogRmxvb2RpbmcgUmVk?= =?gb2312?Q?uction_Draft_Redux]?= Thread-Index: AQHUvG1FqzT02pXjekimftY6q+obb6XaQXrQ Date: Mon, 11 Feb 2019 08:47:01 +0000 Message-ID: <76CD132C3ADEF848BD84D028D243C927C32F455A@NKGEML515-MBX.china.huawei.com> References: , <5A5B4DE12C0DAC44AF501CD9A2B01A8D8F53D937@DGGEMM532-MBX.china.huawei.com> In-Reply-To: <5A5B4DE12C0DAC44AF501CD9A2B01A8D8F53D937@DGGEMM532-MBX.china.huawei.com> Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.130.151.75] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] =?gb2312?b?tPC4tDogIE1vdmluZyBGb3J3YXJkIFtSZTogRmxvb2Rp?= =?gb2312?b?bmcgUmVkdWN0aW9uIERyYWZ0IFJlZHV4XQ==?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 08:47:25 -0000 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Lm9yZw0KPiBodHRwczovL3d3dy5pZXRmLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xzcg0KX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18NCkxzciBtYWlsaW5nIGxp c3QNCkxzckBpZXRmLm9yZw0KaHR0cHM6Ly93d3cuaWV0Zi5vcmcvbWFpbG1hbi9saXN0aW5mby9s c3INCg== From nobody Mon Feb 11 02:47:17 2019 Return-Path: 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 EF97F130E86; Mon, 11 Feb 2019 02:47:15 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001] 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 6D9qiQcgF94j; Mon, 11 Feb 2019 02:47:14 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id 6E635130E8C; Mon, 11 Feb 2019 02:47:14 -0800 (PST) Received: from tops.chopps.org (047-050-069-038.biz.spectrum.com [47.50.69.38]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPS id AD61F60450; Mon, 11 Feb 2019 05:47:13 -0500 (EST) User-agent: mu4e 1.1.0; emacs 26.1 From: Christian Hopps To: "lsr\@ietf.org" Cc: chopps@chopps.org, "lsr-ads\@ietf.org" , "lsr-chairs\@ietf.org" Date: Mon, 11 Feb 2019 05:44:59 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Archived-At: Subject: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 10:47:16 -0000 --=-=-= Content-Type: text/plain; format=flowed Hi Folks, We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. The aim of this document is to describe the problem space and standardize a way to signal dynamic flooding information. It does not standardize any specific algorithm for flooding topology creation. Authors please respond indicating if you are aware of any IPR related to this work. We also have another draft (draft-cc-lsr-flooding-reduction-01) that started as a distributed flooding topology algorithm and morphed into that plus competing ideas on signaling of flooding topology information. The intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG can discuss adding any signaling ideas from this work to the adopted signaling draft (with proper attribution given as appropriate), and two, for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new document without the signaling portion and instead focus on their flooding topology algorithm. This new focused document can be considered in parallel along with the other algorithm work that has been proposed. Flooding topology creation is seen as a hard problem for which we don't expect a one-size-fits-all solution. Taking the steps outlined above will help us move forward on the solutions. Thanks, Chris & Acee. LSR WG Chairs. --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxhUrAACgkQLh2DDte4 MCX9FQ//Yur+RIoHCen3qtA/S/qsCGlG6DyFMweEDxto6qkePJhDC/ych+1ONKtg EksqpPH8wkWXtYEM5WBrsDPm29/x8erA51z5fu9/2ripSoNdIasFczzPnhplkyNI FedKoc4TQJ9aQATUAA0ksuXbtPsIIfBiFQT5xJqY7Xjyd4AsemeC9RvcNAYbRNut L4mTWTq6nc1m+PWorfeUUA0fp0ZRs3nZYxms6ku1Unqc9sG+GTAnQtXui6SDnepe 3Fgz8pKWokRx2LA9X8vY52hpGDPLjuVFs4ohlwZ68rSRx6PQwJ/elOsP+6c1IbDz nRs8QhD6dfzFTQpF3shXhynCVAokBwMCG6cZES9FAEQzB/rfkyGWtjJIovyzMCEW VECl9g+ynx/0J0AjzpxewneQZqwO5HheuN4WCRsChRa11cjLoztQODZK7VPzQq4m j4IC4g8PIvljpqKjaXS72C7homWwYSUMx3u4BE1FeEuH4m7CT6W+uQWWas2/TG00 JHv5P7Re225kdNy3XqFcQbZks8KNOdeBD3EwuPTrgL9lBDnfcuftTmEXHTRHsrW5 ezOIAJILDHfX1kPyfAqTHLBXRW5dNg0IrT6grQdwN8biZch5e/brfeOg36HUChcU Z3xxHgnFT6IF+r4ZVxnR5Mez8WU2DiZc8eF9ZACZy15KOz+PKXg= =qLDq -----END PGP SIGNATURE----- --=-=-=-- From nobody Mon Feb 11 05:23:07 2019 Return-Path: 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 C2117130E8A; Mon, 11 Feb 2019 05:23:04 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 p23_wzmDg__9; Mon, 11 Feb 2019 05:23:03 -0800 (PST) Received: from rcdn-iport-5.cisco.com (rcdn-iport-5.cisco.com [173.37.86.76]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F3D6212D4EA; Mon, 11 Feb 2019 05:23:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2440; q=dns/txt; s=iport; t=1549891383; x=1551100983; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=x66L1ZfMOaLcExAQmGtkbEne6GlobwD0Olt3ryFdwbw=; b=FAdXbvifntqGy+Ncdm9uoOHNM2Q55a8ck44T8hLK/ndTzhOJVgLqy1mX AkpNbZ1Vho3iohJxspN8ioAkIIbS8Jcst4gQn1zoYhNJOZ5DqXr1q+mrg sVWr8Kr1hP6289sU5sdgipwPPsAW2iE41knEmRmuxBb5HcYWk5TtS8aQQ c=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AHAADDdmFc/5BdJa1jGgEBAQEBAgE?= =?us-ascii?q?BAQEHAgEBAQGBUgQBAQEBCwGCA4FqJwqDepQHgWiYOIF7CgEBAYRsAheDKCI?= =?us-ascii?q?1CA0BAwEBAgEBAm0ohUsGHQYRRRACAQgODAImAgICMBUQAgQBDQUbgwmCAqk?= =?us-ascii?q?wgS+FRIRkgQuLOBeBf4E4DBOCTIUBgwkxgiYCox8JApJOGYFthUuLKIlkCUa?= =?us-ascii?q?RYgIRFIEnIQMzgVZwFWUBgkGQXUExi0OBHwEB?= X-IronPort-AV: E=Sophos;i="5.58,358,1544486400"; d="scan'208";a="298086526" Received: from rcdn-core-8.cisco.com ([173.37.93.144]) by rcdn-iport-5.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Feb 2019 13:22:56 +0000 Received: from XCH-RTP-015.cisco.com (xch-rtp-015.cisco.com [64.101.220.155]) by rcdn-core-8.cisco.com (8.15.2/8.15.2) with ESMTPS id x1BDMuPN024685 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Mon, 11 Feb 2019 13:22:56 GMT Received: from xch-rtp-015.cisco.com (64.101.220.155) by XCH-RTP-015.cisco.com (64.101.220.155) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 11 Feb 2019 08:22:55 -0500 Received: from xch-rtp-015.cisco.com ([64.101.220.155]) by XCH-RTP-015.cisco.com ([64.101.220.155]) with mapi id 15.00.1395.000; Mon, 11 Feb 2019 08:22:55 -0500 From: "Acee Lindem (acee)" To: Christian Hopps , "lsr@ietf.org" CC: "lsr-ads@ietf.org" , "lsr-chairs@ietf.org" Thread-Topic: WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. Thread-Index: AQHUwfcqvpixdtvexEKB5NX4sukjbKXaldsA Date: Mon, 11 Feb 2019 13:22:55 +0000 Message-ID: <988989F9-525D-4ED5-9001-BE9B1B6E8901@cisco.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.24.70.188] Content-Type: text/plain; charset="utf-8" Content-ID: <6346CBDD8D71F149955506EB40326B11@emea.cisco.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Outbound-SMTP-Client: 64.101.220.155, xch-rtp-015.cisco.com X-Outbound-Node: rcdn-core-8.cisco.com Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 13:23:05 -0000 U3BlYWtpbmcgYXMgYSBXRyBtZW1iZXI6DQoNCkkgc3VwcG9ydCBhZG9wdGlvbiBvZiBkcmFmdC1s aS1sc3ItZHluYW1pYy1mbG9vZGluZy0wMiBhcyBpbmZyYXN0cnVjdHVyZSBmb3IgZmxvb2Rpbmcg cmVkdWN0aW9uIG1lY2hhbmlzbXMgYmFzZWQgb24gYSBzZXBhcmF0ZSBmbG9vZGluZyB0b3BvbG9n eS4gV29yayBvbiBpbmRpdmlkdWFsIGZsb29kaW5nIHJlZHVjdGlvbi90b3BvbG9neSBkZXRlcm1p bmF0aW9uIGFsZ29yaXRobXMgY2FuIHByb2NlZWQgaW4gc2VwYXJhdGUgZHJhZnRzLiANCg0KVGhh bmtzLA0KQWNlZQ0KDQrvu79PbiAyLzExLzE5LCA1OjQ3IEFNLCAiQ2hyaXN0aWFuIEhvcHBzIiA8 Y2hvcHBzQGNob3Bwcy5vcmc+IHdyb3RlOg0KDQogICAgDQogICAgSGkgRm9sa3MsDQogICAgDQog ICAgV2UgYXJlIHN0YXJ0aW5nIGEgMiB3ZWVrIGFkb3B0aW9uIGNhbGwgb24gZHJhZnQtbGktbHNy LWR5bmFtaWMtZmxvb2RpbmctMDIuDQogICAgDQogICAgVGhlIGFpbSBvZiB0aGlzIGRvY3VtZW50 IGlzIHRvIGRlc2NyaWJlIHRoZSBwcm9ibGVtIHNwYWNlIGFuZCBzdGFuZGFyZGl6ZSBhIHdheSB0 byBzaWduYWwgZHluYW1pYyBmbG9vZGluZyBpbmZvcm1hdGlvbi4gSXQgZG9lcyBub3Qgc3RhbmRh cmRpemUgYW55IHNwZWNpZmljIGFsZ29yaXRobSBmb3IgZmxvb2RpbmcgdG9wb2xvZ3kgY3JlYXRp b24uDQogICAgDQogICAgQXV0aG9ycyBwbGVhc2UgcmVzcG9uZCBpbmRpY2F0aW5nIGlmIHlvdSBh cmUgYXdhcmUgb2YgYW55IElQUiByZWxhdGVkIHRvIHRoaXMgd29yay4NCiAgICANCiAgICBXZSBh bHNvIGhhdmUgYW5vdGhlciBkcmFmdCAoZHJhZnQtY2MtbHNyLWZsb29kaW5nLXJlZHVjdGlvbi0w MSkgdGhhdCBzdGFydGVkIGFzIGEgZGlzdHJpYnV0ZWQgZmxvb2RpbmcgdG9wb2xvZ3kgYWxnb3Jp dGhtIGFuZCBtb3JwaGVkIGludG8gdGhhdCBwbHVzIGNvbXBldGluZyBpZGVhcyBvbiBzaWduYWxp bmcgb2YgZmxvb2RpbmcgdG9wb2xvZ3kgaW5mb3JtYXRpb24uIFRoZSBpbnRlbnQgYWZ0ZXIgYWRv cHRpb24gb2YgZHJhZnQtbGktbHNyLWR5bmFtaWMtZmxvb2RpbmctMDIgaXMgdHdvLWZvbGQuIE9u ZSwgdGhlIFdHIGNhbiBkaXNjdXNzIGFkZGluZyBhbnkgc2lnbmFsaW5nIGlkZWFzIGZyb20gdGhp cyB3b3JrIHRvIHRoZSBhZG9wdGVkIHNpZ25hbGluZyBkcmFmdCAod2l0aCBwcm9wZXIgYXR0cmli dXRpb24gZ2l2ZW4gYXMgYXBwcm9wcmlhdGUpLCBhbmQgdHdvLCBmb3IgdGhlIGF1dGhvcnMgb2Yg ZHJhZnQtY2MtbHNyLWZsb29kaW5nLXJlZHVjdGlvbi0wMSB0byBwdWJsaXNoIGEgbmV3IGRvY3Vt ZW50IHdpdGhvdXQgdGhlIHNpZ25hbGluZyBwb3J0aW9uIGFuZCBpbnN0ZWFkIGZvY3VzIG9uIHRo ZWlyIGZsb29kaW5nIHRvcG9sb2d5IGFsZ29yaXRobS4gVGhpcyBuZXcgZm9jdXNlZCBkb2N1bWVu dCBjYW4gYmUgY29uc2lkZXJlZCBpbiBwYXJhbGxlbCBhbG9uZyB3aXRoIHRoZSBvdGhlciBhbGdv cml0aG0gd29yayB0aGF0IGhhcyBiZWVuIHByb3Bvc2VkLg0KICAgIA0KICAgIEZsb29kaW5nIHRv cG9sb2d5IGNyZWF0aW9uIGlzIHNlZW4gYXMgYSBoYXJkIHByb2JsZW0gZm9yIHdoaWNoIHdlIGRv bid0IGV4cGVjdCBhIG9uZS1zaXplLWZpdHMtYWxsIHNvbHV0aW9uLiBUYWtpbmcgdGhlIHN0ZXBz IG91dGxpbmVkIGFib3ZlIHdpbGwgaGVscCB1cyBtb3ZlIGZvcndhcmQgb24gdGhlIHNvbHV0aW9u cy4NCiAgICANCiAgICBUaGFua3MsDQogICAgQ2hyaXMgJiBBY2VlLg0KICAgIExTUiBXRyBDaGFp cnMuDQogICAgDQoNCg== From nobody Mon Feb 11 07:09:01 2019 Return-Path: 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 D0C6C130E95; 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[73.158.115.137]) by smtp.gmail.com with ESMTPSA id k9sm13230563pgo.1.2019.02.11.07.08.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 11 Feb 2019 07:08:54 -0800 (PST) Sender: Tony Li From: tony.li@tony.li Message-Id: Content-Type: multipart/alternative; boundary="Apple-Mail=_76298708-0A17-4945-AADB-9DEAFD4EE4B2" Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Date: Mon, 11 Feb 2019 07:08:51 -0800 In-Reply-To: Cc: "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" To: Christian Hopps References: X-Mailer: Apple Mail (2.3445.102.3) Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 15:09:00 -0000 --Apple-Mail=_76298708-0A17-4945-AADB-9DEAFD4EE4B2 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 +1 as author. There is an IPR filing on this technology, specifying the =E2=80=9Cdon=E2=80= =99t sue us, we won=E2=80=99t sue you=E2=80=9D language. See = https://datatracker.ietf.org/ipr/3361/ = We are very interested in moving forward together on this work. Regards, Tony > On Feb 11, 2019, at 2:44 AM, Christian Hopps = wrote: >=20 >=20 > Hi Folks, >=20 > We are starting a 2 week adoption call on = draft-li-lsr-dynamic-flooding-02. >=20 > The aim of this document is to describe the problem space and = standardize a way to signal dynamic flooding information. It does not = standardize any specific algorithm for flooding topology creation. >=20 > Authors please respond indicating if you are aware of any IPR related = to this work. >=20 > We also have another draft (draft-cc-lsr-flooding-reduction-01) that = started as a distributed flooding topology algorithm and morphed into = that plus competing ideas on signaling of flooding topology information. = The intent after adoption of draft-li-lsr-dynamic-flooding-02 is = two-fold. One, the WG can discuss adding any signaling ideas from this = work to the adopted signaling draft (with proper attribution given as = appropriate), and two, for the authors of = draft-cc-lsr-flooding-reduction-01 to publish a new document without the = signaling portion and instead focus on their flooding topology = algorithm. This new focused document can be considered in parallel along = with the other algorithm work that has been proposed. >=20 > Flooding topology creation is seen as a hard problem for which we = don't expect a one-size-fits-all solution. Taking the steps outlined = above will help us move forward on the solutions. >=20 > Thanks, > Chris & Acee. > LSR WG Chairs. > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr --Apple-Mail=_76298708-0A17-4945-AADB-9DEAFD4EE4B2 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8

+1 as author.

There is an IPR filing on this = technology, specifying the =E2=80=9Cdon=E2=80=99t sue us, we won=E2=80=99t= sue you=E2=80=9D language.  See https://datatracker.ietf.org/ipr/3361/

We are very interested = in moving forward together on this work.

Regards,
Tony


On Feb = 11, 2019, at 2:44 AM, Christian Hopps <chopps@chopps.org> = wrote:


Hi Folks,

We are = starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02.

The aim of this document is to describe the = problem space and standardize a way to signal dynamic flooding = information. It does not standardize any specific algorithm for flooding = topology creation.

Authors please respond = indicating if you are aware of any IPR related to this work.

We also have another draft = (draft-cc-lsr-flooding-reduction-01) that started as a distributed = flooding topology algorithm and morphed into that plus competing ideas = on signaling of flooding topology information. The intent after adoption = of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG can discuss = adding any signaling ideas from this work to the adopted signaling draft = (with proper attribution given as appropriate), and two, for the authors = of draft-cc-lsr-flooding-reduction-01 to publish a new document without = the signaling portion and instead focus on their flooding topology = algorithm. This new focused document can be considered in parallel along = with the other algorithm work that has been proposed.

Flooding topology creation is seen as a hard problem for = which we don't expect a one-size-fits-all solution. Taking the steps = outlined above will help us move forward on the solutions.

Thanks,
Chris & Acee.
LSR WG Chairs.
_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/mailman/listinfo/lsr

= --Apple-Mail=_76298708-0A17-4945-AADB-9DEAFD4EE4B2-- From nobody Mon Feb 11 07:15:14 2019 Return-Path: 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 300BD131024 for ; Mon, 11 Feb 2019 07:15:14 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 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_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=unavailable autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=raszuk.net 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 HD4bVtuM1UGF for ; Mon, 11 Feb 2019 07:15:12 -0800 (PST) Received: from mail-qt1-x830.google.com (mail-qt1-x830.google.com [IPv6:2607:f8b0:4864:20::830]) (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 88497130EDE for ; Mon, 11 Feb 2019 07:15:10 -0800 (PST) Received: by mail-qt1-x830.google.com with SMTP id r9so12509132qtt.3 for ; Mon, 11 Feb 2019 07:15:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=raszuk.net; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=+Kz9pC+9pgoq3KAbFdzyLoVQ9oE6M3PycsV9nrSe3Zk=; b=A98weJ5wuM95wfE95aSHsYJoys4yVzFn3RxrQnnXdaWeGZngXMDjTYOqB1QWiOUu1S dLzlo+eBuSkwbffy/Wp4Q0PNw3EVzmFXfmnrLrITRUavTVB4pmtO3eooFdmictrtS3m/ anL77Mf/pU/ORN55tQhnMTFV/0kO47zdLhGYxTk8Hu0hUyKTXaqJxccPzvOn18H8YasH gzYVsSz20VCc3enw/vJQHggzI4y+pQsdCb2q3pgg/brOHVEMXq0rwUJhF+3aKHSxrWKZ kUiIItTPfrOoXSD21BELdDkmAmK3AkOi/JA6bczrKY6UncqkppBepqojG/q71wCfcF6z HJWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=+Kz9pC+9pgoq3KAbFdzyLoVQ9oE6M3PycsV9nrSe3Zk=; b=Xv2nqQUqsGlM+7mp7SbkwDln0Fk3Bk+JhfJckAKVpAa0n3E7yG/IQccFHwMPs58yHh B7pdfWgtazT0jwJ+JLMtO2hrdJM369jVe/iS1y6euItso19/Ik98KaI5Kib+txSK5cH0 /3PXQvezrIk5YLfSRBNnrps2CZ/gC2OVnC86nasoHJ1/c7og4hpMeSYqKEnCpD/jthAq zIrKGdlDD8A6qmqPAuH8USc7wn5+m6lpO9PH9d7WPxuSnaJ0kmZe0WyTtO2BsiAKUVgv dumxIFNHlSzYqaV1WCB/2FerV+u6hgL6MH+DJUy7kmpHskQh5uUdb/dkqH4h7zUd+p22 Uklw== X-Gm-Message-State: AHQUAubRaC/vRMbVqWWMdqLrnZy3BKkWsrhOO0LXgjIbtxg9ejjOxiLi O7kl8TS0e+0WFdIRDrhEGNNFndfZKud4HQwHIErNKw== X-Google-Smtp-Source: AHgI3IazIv2pzMmZ5fAU5jIFexfG0LKSic6eAYWLNPd6LoUy608kNKSTOzzYG8klxqpsXJWmAYWLkKIQ+gJiZ6WLkq8= X-Received: by 2002:ac8:4884:: with SMTP id i4mr26839458qtq.219.1549898109456; Mon, 11 Feb 2019 07:15:09 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Robert Raszuk Date: Mon, 11 Feb 2019 16:14:58 +0100 Message-ID: To: Christian Hopps Cc: "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Content-Type: multipart/alternative; boundary="00000000000040ac8b05819fc6c4" Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 15:15:14 -0000 --00000000000040ac8b05819fc6c4 Content-Type: text/plain; charset="UTF-8" Support. r. On Mon, Feb 11, 2019 at 11:47 AM Christian Hopps wrote: > > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > The aim of this document is to describe the problem space and standardize > a way to signal dynamic flooding information. It does not standardize any > specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to > this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that > started as a distributed flooding topology algorithm and morphed into that > plus competing ideas on signaling of flooding topology information. The > intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, > the WG can discuss adding any signaling ideas from this work to the adopted > signaling draft (with proper attribution given as appropriate), and two, > for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new > document without the signaling portion and instead focus on their flooding > topology algorithm. This new focused document can be considered in parallel > along with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above will > help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > --00000000000040ac8b05819fc6c4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Support.

r.

On Mon, Feb 11, 2019= at 11:47 AM Christian Hopps <chopp= s@chopps.org> wrote:

Hi Folks,

We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02.=

The aim of this document is to describe the problem space and standardize a= way to signal dynamic flooding information. It does not standardize any sp= ecific algorithm for flooding topology creation.

Authors please respond indicating if you are aware of any IPR related to th= is work.

We also have another draft (draft-cc-lsr-flooding-reduction-01) that starte= d as a distributed flooding topology algorithm and morphed into that plus c= ompeting ideas on signaling of flooding topology information. The intent af= ter adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG c= an discuss adding any signaling ideas from this work to the adopted signali= ng draft (with proper attribution given as appropriate), and two, for the a= uthors of draft-cc-lsr-flooding-reduction-01 to publish a new document with= out the signaling portion and instead focus on their flooding topology algo= rithm. This new focused document can be considered in parallel along with t= he other algorithm work that has been proposed.

Flooding topology creation is seen as a hard problem for which we don't= expect a one-size-fits-all solution. Taking the steps outlined above will = help us move forward on the solutions.

Thanks,
Chris & Acee.
LSR WG Chairs.
_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/mailman/listinfo/lsr
--00000000000040ac8b05819fc6c4-- From nobody Mon Feb 11 07:20:35 2019 Return-Path: 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 80EA51271FF; Mon, 11 Feb 2019 07:20:33 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 3yT2ame7LGcp; Mon, 11 Feb 2019 07:20:32 -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 E5C8A126F72; Mon, 11 Feb 2019 07:20:31 -0800 (PST) Received: from LHREML711-CAH.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id 1C79E82A8CD0416C62EF; Mon, 11 Feb 2019 15:20:30 +0000 (GMT) Received: from lhreml701-chm.china.huawei.com (10.201.108.50) by LHREML711-CAH.china.huawei.com (10.201.108.34) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 11 Feb 2019 15:20:29 +0000 Received: from lhreml701-chm.china.huawei.com (10.201.108.50) by lhreml701-chm.china.huawei.com (10.201.108.50) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Mon, 11 Feb 2019 15:20:29 +0000 Received: from DGGEMM401-HUB.china.huawei.com (10.3.20.209) by lhreml701-chm.china.huawei.com (10.201.108.50) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA_P256) id 15.1.1591.10 via Frontend Transport; Mon, 11 Feb 2019 15:20:29 +0000 Received: from DGGEMM532-MBX.china.huawei.com ([169.254.7.46]) by DGGEMM401-HUB.china.huawei.com ([10.3.20.209]) with mapi id 14.03.0415.000; Mon, 11 Feb 2019 23:19:55 +0800 From: Lizhenbin To: Christian Hopps , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. 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Mon, 11 Feb 2019 10:07:22 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Edward Date: Mon, 11 Feb 2019 10:07:20 -0800 Message-ID: To: Christian Hopps Cc: "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Content-Type: multipart/alternative; boundary="00000000000020fc990581a22ead" Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 18:07:25 -0000 --00000000000020fc990581a22ead Content-Type: text/plain; charset="UTF-8" Support. On Mon, Feb 11, 2019 at 2:47 AM Christian Hopps wrote: > > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > The aim of this document is to describe the problem space and standardize > a way to signal dynamic flooding information. It does not standardize any > specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to > this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that > started as a distributed flooding topology algorithm and morphed into that > plus competing ideas on signaling of flooding topology information. The > intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, > the WG can discuss adding any signaling ideas from this work to the adopted > signaling draft (with proper attribution given as appropriate), and two, > for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new > document without the signaling portion and instead focus on their flooding > topology algorithm. This new focused document can be considered in parallel > along with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above will > help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > --00000000000020fc990581a22ead Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Support.

On Mon, Feb 11, 2019 at 2:47 AM Christian Hopps &l= t;chopps@chopps.org> wrote:
=

Hi Folks,

We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02.=

The aim of this document is to describe the problem space and standardize a= way to signal dynamic flooding information. It does not standardize any sp= ecific algorithm for flooding topology creation.

Authors please respond indicating if you are aware of any IPR related to th= is work.

We also have another draft (draft-cc-lsr-flooding-reduction-01) that starte= d as a distributed flooding topology algorithm and morphed into that plus c= ompeting ideas on signaling of flooding topology information. The intent af= ter adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG c= an discuss adding any signaling ideas from this work to the adopted signali= ng draft (with proper attribution given as appropriate), and two, for the a= uthors of draft-cc-lsr-flooding-reduction-01 to publish a new document with= out the signaling portion and instead focus on their flooding topology algo= rithm. This new focused document can be considered in parallel along with t= he other algorithm work that has been proposed.

Flooding topology creation is seen as a hard problem for which we don't= expect a one-size-fits-all solution. Taking the steps outlined above will = help us move forward on the solutions.

Thanks,
Chris & Acee.
LSR WG Chairs.
_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/mailman/listinfo/lsr
--00000000000020fc990581a22ead-- From nobody Mon Feb 11 10:09:47 2019 Return-Path: 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 C6DA6130E9D for ; Mon, 11 Feb 2019 10:09:44 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.947 X-Spam-Level: X-Spam-Status: No, score=0.947 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DOS_OUTLOOK_TO_MX=2.845, HTML_MESSAGE=0.001, URIBL_BLOCKED=0.001] autolearn=no 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 NHvCWHmfH4bD for ; Mon, 11 Feb 2019 10:09:43 -0800 (PST) Received: from hickoryhill-consulting.com (50-245-122-100-static.hfc.comcastbusiness.net [50.245.122.100]) (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 102E01310E2 for ; Mon, 11 Feb 2019 10:09:42 -0800 (PST) X-Default-Received-SPF: pass (skip=loggedin (res=PASS)) x-ip-name=166.176.248.72; From: "Susan Hares" To: Cc: "'Tony Li'" , "'Zhenbin Li'" , "'Huaimo Chen'" Date: Mon, 11 Feb 2019 13:09:35 -0500 Message-ID: <019801d4c234$f3142a60$d93c7f20$@ndzh.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0199_01D4C20B.0A3EBEA0" X-Mailer: Microsoft Outlook 14.0 Thread-Index: AdTCMnixMRdd3byjQ1iUo+7ltqHGQQ== Content-Language: en-us X-Antivirus: AVG (VPS 190211-6, 02/11/2019), Outbound message X-Antivirus-Status: Not-Tested X-Authenticated-User: skh@ndzh.com Archived-At: Subject: [Lsr] Flooding Reduction Draft Discussion - a naive question X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 18:09:45 -0000 This is a multipart message in MIME format. ------=_NextPart_000_0199_01D4C20B.0A3EBEA0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit In working through the emails on the flooding reduction concepts, I have a few question: Is this work is simply for the spine-leaf topologies or for multiple topologies? . Does this work consider all of the following networks: spine-leaf data centers, 802.1 Provider Bridging, IPRAN topologies, banking networks, and IoT sensor networks? If this technology is for multiple topologies, it is useful to have a discussion of convergence problems within these diverse networks. I have observed in WG meetings and on-list the following problem scenarios: a) spine-leaf convergence problem descriptions and b) Dave Allan's description of the 802.1 Provider Bridging (PBB) convergence issues. Did I miss other problem convergence discussions? Sue PS - As part of some research for IPRAN topologies, I wrote-up a description of convergence problems for the IPRAN ring-grid topologies. I am looking for something like: https://www.ietf.org/internet-drafts/draft-hares-lsr-grid-ring-convergence-0 0.txt ------=_NextPart_000_0199_01D4C20B.0A3EBEA0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

In working = through the emails on the flooding reduction concepts,  I have a = few question:   Is this work is simply for the spine-leaf = topologies or for multiple topologies?   … Does this = work consider all of the following networks: spine-leaf data centers, = 802.1 Provider Bridging, IPRAN topologies, banking networks, and IoT = sensor networks? 

 

If this = technology is for multiple topologies, it is useful to have a discussion = of convergence problems within these diverse networks.   I = have observed in WG meetings and on-list the following problem = scenarios: a) spine-leaf convergence problem descriptions and b) Dave = Allan’s description of the 802.1 Provider Bridging (PBB) = convergence issues.   Did I miss other problem convergence = discussions?  

 

Sue

 

PS - =  As part of some research for IPRAN topologies, I wrote-up a = description of convergence problems for the IPRAN ring-grid = topologies.  I am looking for something like:

https://www.ietf.org/internet-drafts/draft-hares-lsr-gr= id-ring-convergence-00.txt

 

------=_NextPart_000_0199_01D4C20B.0A3EBEA0-- From nobody Mon Feb 11 10:15:32 2019 Return-Path: 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 DD18E130E9D; Mon, 11 Feb 2019 10:15:30 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, 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 PbXrZHa1jriX; Mon, 11 Feb 2019 10:15:29 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id DEA6F1271FF; Mon, 11 Feb 2019 10:15:28 -0800 (PST) Received: from stubbs.int.chopps.org (047-050-069-038.biz.spectrum.com [47.50.69.38]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPSA id 1EBEA60427; Mon, 11 Feb 2019 13:15:27 -0500 (EST) From: Christian Hopps Message-Id: <0FFC492B-14BC-464A-BEB3-D04FB74DAF03@chopps.org> Content-Type: multipart/signed; boundary="Apple-Mail=_4DE1D93A-181C-411D-84D2-5D61C90D3DE0"; protocol="application/pgp-signature"; micalg=pgp-sha512 Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Date: Mon, 11 Feb 2019 13:15:26 -0500 In-Reply-To: <5A5B4DE12C0DAC44AF501CD9A2B01A8D8F540587@DGGEMM532-MBX.china.huawei.com> Cc: Christian Hopps , "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" To: Lizhenbin References: <5A5B4DE12C0DAC44AF501CD9A2B01A8D8F540587@DGGEMM532-MBX.china.huawei.com> X-Mailer: Apple Mail (2.3445.102.3) Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 18:15:31 -0000 --Apple-Mail=_4DE1D93A-181C-411D-84D2-5D61C90D3DE0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Feb 11, 2019, at 10:19 AM, Lizhenbin wrote: >=20 > Hi Chris, > 1. I have doubt about "The aim of this document is to describe the = problem space and standardize a way to signal dynamic flooding = information.". Does the aim mean the draft describes the problem space = and standardize the way for the centralized solution or mean the draft = will standardize the way used for both the centralized solutions and the = distributed solutions? It does not standardize any algorithms. For a centralized algorithm = (unspecified) use one has to distribute the flooding topology it does = specify this. It also supplies the means to signal what distributed = algorithm is in use (a value). > 2. I explained in the previous mail the distributed solution includes = more than the algorithms defined in the = draft-cc-lsr-flooding-reduction-00 and the overlapped signallings = defined in the = draft-cc-lsr-flooding-reduction-00/draft-li-dynamic-flooding-03. For = example, it may define the standardized procedures for the distributed = solutions. If there is such part, is it defined by = draft-li-lsr-dynamic-flooding-02 or draft-cc-lsr-flooding-reduction? How a distributed algorithm decides to implement itself is up to that = algorithm. This is not part of the signaled information. Again, the only = thing that I am aware of in draft-li-dynamic-flooding in regards to = distributed algorithms is what's required for us to use them as they get = defined in the future, i.e., a way to signal which one is in use. Thanks, Chris. >=20 > I hope you could clarify the above issues firstly for the adoption. >=20 >=20 > Thanks & Regards, > Zhenbin (Robin) >=20 >=20 >=20 >=20 > ________________________________________ > =E5=8F=91=E4=BB=B6=E4=BA=BA: Lsr [lsr-bounces@ietf.org] =E4=BB=A3=E8=A1=A8= Christian Hopps [chopps@chopps.org] > =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2019=E5=B9=B42=E6=9C=8811=E6=97=A5= 18:44 > =E6=94=B6=E4=BB=B6=E4=BA=BA: lsr@ietf.org > =E6=8A=84=E9=80=81: lsr-chairs@ietf.org; lsr-ads@ietf.org; = chopps@chopps.org > =E4=B8=BB=E9=A2=98: [Lsr] WG Adoption Call for = draft-li-lsr-dynamic-flooding-02 + IPR poll. >=20 > Hi Folks, >=20 > We are starting a 2 week adoption call on = draft-li-lsr-dynamic-flooding-02. >=20 > The aim of this document is to describe the problem space and = standardize a way to signal dynamic flooding information. It does not = standardize any specific algorithm for flooding topology creation. >=20 > Authors please respond indicating if you are aware of any IPR related = to this work. >=20 > We also have another draft (draft-cc-lsr-flooding-reduction-01) that = started as a distributed flooding topology algorithm and morphed into = that plus competing ideas on signaling of flooding topology information. = The intent after adoption of draft-li-lsr-dynamic-flooding-02 is = two-fold. One, the WG can discuss adding any signaling ideas from this = work to the adopted signaling draft (with proper attribution given as = appropriate), and two, for the authors of = draft-cc-lsr-flooding-reduction-01 to publish a new document without the = signaling portion and instead focus on their flooding topology = algorithm. This new focused document can be considered in parallel along = with the other algorithm work that has been proposed. >=20 > Flooding topology creation is seen as a hard problem for which we = don't expect a one-size-fits-all solution. Taking the steps outlined = above will help us move forward on the solutions. >=20 > Thanks, > Chris & Acee. > LSR WG Chairs. --Apple-Mail=_4DE1D93A-181C-411D-84D2-5D61C90D3DE0 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxhu74ACgkQLh2DDte4 MCWzIA/+IP0Uxt56cmUL71Oni+MEpJWBeVJi/NN8sNhgMAqQ64MZtoDVRVqkzz6T +AznCk9uUjOyOPX/1gPd+Wd8z+PjUfNxm0lNCFHiTt/5dglawuaoHAtPCiXsZf+z p8DbSZi/jpnRB2ZUowc9D97PKyu3dLMGuEdD+2a8BkHJD2pj41uc/okqY2mAwzM/ VJehCbIr9eiKZX7Xic7xTzZMIFZ+cDp5lr5A/ay1uqw7ywQVKCem/PuMdh1Z9AUo /9vcwlMl3RBTQqHOyuBzwVSmTLQNquF1T2gQwcOfLtImSFWuX8KGbCiZ5cdY+Wma 1LSTd6BJ4vl0ZXx2y6Go+O07NydnTYVOvwgy2rx1DW08umUqTpcDw1ruhVvae/7V Ji+4lI8RMd5FaTUZ+z0FRd2msw27kPZ1rK1SvVSbCBFQVty0ij4cadgJhTy4aX/U K3T+ZXiKtObDqZqGDJlvb6cNSpKF8f9nLKJdbwfCep4vZEI1+JS9oWgKD4bTezhh TS1cuD+Z/2uVU3gVLh1saXDW4dQU5G3tzHsW1qZPNM87zZ0Eo2U1i1R4quFDtf8S dvHS7vVmqxkM9+gxKIMIlh8DYq+4wnepwlpBEw9crmH9rYOX8MDlv1jY38UGkIOq yO31GlVTr2pXn/93en8+WNQu4sUta9ikITWg3mMLdZ7yZfbTrqE= =XEF4 -----END PGP SIGNATURE----- --Apple-Mail=_4DE1D93A-181C-411D-84D2-5D61C90D3DE0-- From nobody Mon Feb 11 10:41:50 2019 Return-Path: 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 AF361131122 for ; 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Mon, 11 Feb 2019 18:41:39 +0000 From: David Allan I To: "acee@cisco.com" , "chopps@chopps.org" , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. 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Mon, 11 Feb 2019 10:46:49 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: steve ulrich Date: Mon, 11 Feb 2019 12:46:38 -0600 Message-ID: To: Christian Hopps Cc: "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Content-Type: multipart/alternative; boundary="0000000000003668000581a2bbc2" Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 18:46:54 -0000 --0000000000003668000581a2bbc2 Content-Type: text/plain; charset="UTF-8" support. On Mon, Feb 11, 2019 at 4:47 AM Christian Hopps wrote: > > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > The aim of this document is to describe the problem space and standardize > a way to signal dynamic flooding information. It does not standardize any > specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to > this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that > started as a distributed flooding topology algorithm and morphed into that > plus competing ideas on signaling of flooding topology information. The > intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, > the WG can discuss adding any signaling ideas from this work to the adopted > signaling draft (with proper attribution given as appropriate), and two, > for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new > document without the signaling portion and instead focus on their flooding > topology algorithm. This new focused document can be considered in parallel > along with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above will > help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > -- steve ulrich (sulrich@botwerks.*) --0000000000003668000581a2bbc2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
support.

On Mon, Feb 11, 2019 at 4:47 AM Christian Hopps &l= t;chopps@chopps.org> wrote:
=

Hi Folks,

We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02.=

The aim of this document is to describe the problem space and standardize a= way to signal dynamic flooding information. It does not standardize any sp= ecific algorithm for flooding topology creation.

Authors please respond indicating if you are aware of any IPR related to th= is work.

We also have another draft (draft-cc-lsr-flooding-reduction-01) that starte= d as a distributed flooding topology algorithm and morphed into that plus c= ompeting ideas on signaling of flooding topology information. The intent af= ter adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG c= an discuss adding any signaling ideas from this work to the adopted signali= ng draft (with proper attribution given as appropriate), and two, for the a= uthors of draft-cc-lsr-flooding-reduction-01 to publish a new document with= out the signaling portion and instead focus on their flooding topology algo= rithm. This new focused document can be considered in parallel along with t= he other algorithm work that has been proposed.

Flooding topology creation is seen as a hard problem for which we don't= expect a one-size-fits-all solution. Taking the steps outlined above will = help us move forward on the solutions.

Thanks,
Chris & Acee.
LSR WG Chairs.
_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/mailman/listinfo/lsr


--
steve ulrich (sulrich@botwerks.*)
--0000000000003668000581a2bbc2-- From nobody Mon Feb 11 12:21:18 2019 Return-Path: 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 D1B66131184; Mon, 11 Feb 2019 12:21:15 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 sBk3cKkunbBq; Mon, 11 Feb 2019 12:21:14 -0800 (PST) Received: from aer-iport-3.cisco.com (aer-iport-3.cisco.com [173.38.203.53]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 79FFF13118A; Mon, 11 Feb 2019 12:21:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1688; q=dns/txt; s=iport; t=1549916473; x=1551126073; h=subject:to:references:cc:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=W0Ukfca0hNJnale2fNBYTlUWcQCKQvGpkmpuC2lOyV8=; b=gb14fHSK/svqk3yTAbkNgQQDKPpMSzDXjEBSaPLMBnjczbsxkHgIpy1L Tk/6W/ficnJ/Vyc2ncyj17Ct9YimmWwEM21PCbK8oEGNIBJJhtfeozrsz 5EN676F62EJnzsbq6LtNO6GIggeD2WyknM6xN/BUUX8tJfFMrMEYrg9JW Y=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0B0AABW2GFc/xbLJq1jGgEBAQEBAgE?= =?us-ascii?q?BAQEHAgEBAQGBZYJrcRInjH2Mci2aDg0YC4RJAoNhOBIBAwEBAgEBAm0cDIV?= =?us-ascii?q?LAQEEAQEbGzYLEAsOCi4nMAYBDAYCAQEXgwkBggEPrA6FRIRnBYxagUA/gTi?= =?us-ascii?q?Ca4MeAQGHQQKRBIYri3AJkkoGGYFthUuDGIgQiWQJRpIJgV0hgVYzGggbFTu?= =?us-ascii?q?CbIsehUA+AzCOLgEB?= X-IronPort-AV: E=Sophos;i="5.58,360,1544486400"; d="scan'208";a="9961067" Received: from aer-iport-nat.cisco.com (HELO aer-core-1.cisco.com) ([173.38.203.22]) by aer-iport-3.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Feb 2019 20:21:10 +0000 Received: from [10.60.140.54] (ams-ppsenak-nitro5.cisco.com [10.60.140.54]) by aer-core-1.cisco.com (8.15.2/8.15.2) with ESMTP id x1BKL9gj011724; Mon, 11 Feb 2019 20:21:09 GMT To: Christian Hopps , "lsr@ietf.org" References: Cc: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" From: Peter Psenak Message-ID: <7ec2bad5-884a-3b12-161f-553126bdcc2a@cisco.com> Date: Mon, 11 Feb 2019 21:21:09 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.60.140.54, ams-ppsenak-nitro5.cisco.com X-Outbound-Node: aer-core-1.cisco.com Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 20:21:16 -0000 Hi Chris, support as coauthor. Not aware of any IPR at this point. thanks, Peter On 11/02/2019 11:44 , Christian Hopps wrote: > > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > The aim of this document is to describe the problem space and > standardize a way to signal dynamic flooding information. It does not > standardize any specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to > this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that > started as a distributed flooding topology algorithm and morphed into > that plus competing ideas on signaling of flooding topology information. > The intent after adoption of draft-li-lsr-dynamic-flooding-02 is > two-fold. One, the WG can discuss adding any signaling ideas from this > work to the adopted signaling draft (with proper attribution given as > appropriate), and two, for the authors of > draft-cc-lsr-flooding-reduction-01 to publish a new document without the > signaling portion and instead focus on their flooding topology > algorithm. This new focused document can be considered in parallel along > with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above > will help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > From nobody Mon Feb 11 12:23:08 2019 Return-Path: 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 472E013118C; Mon, 11 Feb 2019 12:23:06 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 hjjiKwTgd91e; Mon, 11 Feb 2019 12:23:04 -0800 (PST) Received: from rcdn-iport-9.cisco.com (rcdn-iport-9.cisco.com [173.37.86.80]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 93A11131184; Mon, 11 Feb 2019 12:23:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1704; q=dns/txt; s=iport; t=1549916584; x=1551126184; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=hsFlWGBUAqqLY+A9/+ja4emV3AVUOCRic1OEw4yZgrE=; b=FM2XKSJaGFEofRfaemdgYFSIp/4fAB09tIb7ElcPp6w8bXHk0KXavaGc PX1A06iP5AsBlcz9MM53Zo+zdBefxmJQphXU3ANV1eC0QMtUHuCae3D2T QWpd+d1VW1u5onxqS8aU4RJK3NSzkHwTHy6BWNr0GfTWvknbZDNa9YEph g=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AHAADS2GFc/5pdJa1jGQEBAQEBAQE?= =?us-ascii?q?BAQEBAQcBAQEBAQGBUwIBAQEBAQsBggNngQMnCpgFgWglmBOBewsBARgLhEk?= =?us-ascii?q?Cgz8iNgcNAQMBAQIBAQJtHAyFSgEBAQMBAQEbHTQLBQsCAQgOCh4QJwslAgQ?= =?us-ascii?q?OBRuDCQGBeQgPrBKKKwWMQxeBf4E4DBOCTIMeAQGBYYM6giYCox8JApJOGYF?= =?us-ascii?q?thUuLKIlkCZIoAhEUgScmCieBVnAVOyoBgkGLHoU/QTGND4EfAQE?= X-IronPort-AV: E=Sophos;i="5.58,360,1544486400"; d="scan'208";a="431749149" Received: from rcdn-core-3.cisco.com ([173.37.93.154]) by rcdn-iport-9.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Feb 2019 20:23:03 +0000 Received: from XCH-RCD-002.cisco.com (xch-rcd-002.cisco.com [173.37.102.12]) by rcdn-core-3.cisco.com (8.15.2/8.15.2) with ESMTPS id x1BKN3es027331 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Mon, 11 Feb 2019 20:23:03 GMT Received: from xch-rcd-004.cisco.com (173.37.102.14) by XCH-RCD-002.cisco.com (173.37.102.12) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 11 Feb 2019 14:23:02 -0600 Received: from xch-rcd-004.cisco.com ([173.37.102.14]) by XCH-RCD-004.cisco.com ([173.37.102.14]) with mapi id 15.00.1395.000; Mon, 11 Feb 2019 14:23:02 -0600 From: "Naiming Shen (naiming)" To: Christian Hopps CC: "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. Thread-Index: AQHUwfcyiR2W0PH3RUa1MIDVPFxagaXbb9KA Date: Mon, 11 Feb 2019 20:23:02 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.156.165.81] Content-Type: text/plain; charset="us-ascii" Content-ID: <09A47E9156B1A14DA33E9B795DAAA4E6@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Outbound-SMTP-Client: 173.37.102.12, xch-rcd-002.cisco.com X-Outbound-Node: rcdn-core-3.cisco.com Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 20:23:06 -0000 Support the adoption of the draft. Regards, - Naiming > On Feb 11, 2019, at 2:44 AM, Christian Hopps wrote: >=20 >=20 > Hi Folks, >=20 > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-0= 2. >=20 > The aim of this document is to describe the problem space and standardize= a way to signal dynamic flooding information. It does not standardize any = specific algorithm for flooding topology creation. >=20 > Authors please respond indicating if you are aware of any IPR related to = this work. >=20 > We also have another draft (draft-cc-lsr-flooding-reduction-01) that star= ted as a distributed flooding topology algorithm and morphed into that plus= competing ideas on signaling of flooding topology information. The intent = after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG= can discuss adding any signaling ideas from this work to the adopted signa= ling draft (with proper attribution given as appropriate), and two, for the= authors of draft-cc-lsr-flooding-reduction-01 to publish a new document wi= thout the signaling portion and instead focus on their flooding topology al= gorithm. This new focused document can be considered in parallel along with= the other algorithm work that has been proposed. >=20 > Flooding topology creation is seen as a hard problem for which we don't e= xpect a one-size-fits-all solution. Taking the steps outlined above will he= lp us move forward on the solutions. >=20 > Thanks, > Chris & Acee. > LSR WG Chairs. > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr From nobody Mon Feb 11 12:27:42 2019 Return-Path: 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 63285131184; Mon, 11 Feb 2019 12:27:40 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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=byARV+qJ; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=bhHaHkIH 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 GjrHLmKOLtCq; Mon, 11 Feb 2019 12:27:38 -0800 (PST) Received: from rcdn-iport-5.cisco.com (rcdn-iport-5.cisco.com [173.37.86.76]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id ACEB1124BF6; Mon, 11 Feb 2019 12:27:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1857; q=dns/txt; s=iport; t=1549916857; x=1551126457; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=aJ6MpONinooO+WZozKYnSQwI26PnPuuFW5ferB82jC8=; b=byARV+qJrOOLjhQlfVsV5HOfBLnOC4t54UTg7l9wCxwGdwzTbrMgJtL/ EBrfgPBoq8n3y5TBzj87fcXzXCyUkopwKviQo6Jf2nFWCjuoa2z1yuMO3 j75u6iPveWv+jkfXXEjp4Q3vQvJJMPrZZDRD1qz3jxsiRfIgrbt6h59AL k=; IronPort-PHdr: =?us-ascii?q?9a23=3AfKTsshMO156BuXTr950l6mtXPHoupqn0MwgJ65?= =?us-ascii?q?Eul7NJdOG58o//OFDEu6w/l0fHCIPc7f8My/HbtaztQyQh2d6AqzhDFf4ETB?= =?us-ascii?q?oZkYMTlg0kDtSCDBj0LfjxZSEgE+xJVURu+DewNk0GUMs=3D?= X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AWAACI2WFc/5BdJa1jGgEBAQEBAgE?= =?us-ascii?q?BAQEHAgEBAQGBVAIBAQEBCwGBMFADgVsECyeHSwOPd0qCDZk3A1QLAQEshEA?= =?us-ascii?q?Cgz8iNwYNAQMBAQIBAQJtHAyFSgEBAQQdHQYBATcBCwQCAQgOAwQBAR8QMh0?= =?us-ascii?q?IAgQBDQUIE4RzAxUBAp9oAooUgiCCeAEBBYUGGIILCIxDF4FAP4FXgkyFA4M?= =?us-ascii?q?4giajIQkCkmeBbYVLiyiJZAlGkWICBAIEBQINAQEFgVwigVZwFYMnghyDbop?= =?us-ascii?q?TcoEojQYBAQ?= X-IronPort-AV: E=Sophos;i="5.58,360,1544486400"; d="scan'208";a="298390674" Received: from rcdn-core-8.cisco.com ([173.37.93.144]) by rcdn-iport-5.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Feb 2019 20:27:36 +0000 Received: from XCH-ALN-010.cisco.com (xch-aln-010.cisco.com [173.36.7.20]) by rcdn-core-8.cisco.com (8.15.2/8.15.2) with ESMTPS id x1BKRZOg015294 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Mon, 11 Feb 2019 20:27:35 GMT Received: from xhs-aln-002.cisco.com (173.37.135.119) by XCH-ALN-010.cisco.com (173.36.7.20) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 11 Feb 2019 14:27:35 -0600 Received: from xhs-rcd-002.cisco.com (173.37.227.247) by xhs-aln-002.cisco.com (173.37.135.119) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 11 Feb 2019 14:27:34 -0600 Received: from NAM05-CO1-obe.outbound.protection.outlook.com (72.163.14.9) by xhs-rcd-002.cisco.com (173.37.227.247) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Mon, 11 Feb 2019 14:27:34 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cisco.onmicrosoft.com; s=selector1-cisco-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=/gxlzdtQYCm7CVGrcIJmq/bwWrJbTM0c+iSGD+AsWBM=; b=bhHaHkIHvw4X5uEBA/LH2+NyZYhVjRBMnLSL24XohAF8MspbQvO73pIhe0jC7Y5wLTzuQtkSPyfaTvTdnH/b1W6+VHR/+OF2A+LrPFOh0jzx+7vfTdAIFYeph4VRrk6qLViy3psj7zKbBZCApCIphaui/73FF2XfyRwCHvEWLME= Received: from SN6PR11MB2798.namprd11.prod.outlook.com (52.135.92.161) by SN6PR11MB2749.namprd11.prod.outlook.com (52.135.92.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1601.19; Mon, 11 Feb 2019 20:27:33 +0000 Received: from SN6PR11MB2798.namprd11.prod.outlook.com ([fe80::69e1:ad4a:7014:5896]) by SN6PR11MB2798.namprd11.prod.outlook.com ([fe80::69e1:ad4a:7014:5896%4]) with mapi id 15.20.1601.023; Mon, 11 Feb 2019 20:27:33 +0000 From: "Les Ginsberg (ginsberg)" To: Christian Hopps , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. 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X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 20:27:40 -0000 Support adoption (as co-author). I am not aware of any relevant IPR. Les > -----Original Message----- > From: Lsr On Behalf Of Christian Hopps > Sent: Monday, February 11, 2019 2:45 AM > To: lsr@ietf.org > Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.org > Subject: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IP= R poll. >=20 >=20 > Hi Folks, >=20 > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-0= 2. >=20 > The aim of this document is to describe the problem space and standardize= a > way to signal dynamic flooding information. It does not standardize any > specific algorithm for flooding topology creation. >=20 > Authors please respond indicating if you are aware of any IPR related to = this > work. >=20 > We also have another draft (draft-cc-lsr-flooding-reduction-01) that star= ted > as a distributed flooding topology algorithm and morphed into that plus > competing ideas on signaling of flooding topology information. The intent > after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the = WG > can discuss adding any signaling ideas from this work to the adopted sign= aling > draft (with proper attribution given as appropriate), and two, for the au= thors > of draft-cc-lsr-flooding-reduction-01 to publish a new document without t= he > signaling portion and instead focus on their flooding topology algorithm.= This > new focused document can be considered in parallel along with the other > algorithm work that has been proposed. >=20 > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above will= help > us move forward on the solutions. >=20 > Thanks, > Chris & Acee. > LSR WG Chairs. From nobody Mon Feb 11 13:24:37 2019 Return-Path: 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 CF5DB126C15; Mon, 11 Feb 2019 13:24:34 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 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_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 dVAkp8blfYa7; Mon, 11 Feb 2019 13:24:32 -0800 (PST) Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) (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 B18F7124B0C; Mon, 11 Feb 2019 13:24:32 -0800 (PST) Received: by mail-pf1-x42f.google.com with SMTP id z9so176847pfi.2; Mon, 11 Feb 2019 13:24:32 -0800 (PST) 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=VSzFTK1mbGC+drfJoR1qSkeASJVkYo0GKpNqRu/zr3s=; b=PrnpjpO85NZSe6Jai3iYXE3nHACZeXsVsBlbyzwkQSWEIYJJNjTGRrA1hvV8NB+4Ld In6kPXg8y7dUFAXNx30jMCPulJubsCZ0DGZKw0zS9szlqFNYU2KBNM3FMp1r6d414ukd JOL+hMdK9nTiGZdSp1E8pjVPGRFos3u/GNKGHGsEwODJ6ROmkzpDV7dnFmRNExq5hnVB utbJ0Fuiz79zDqHsFozpuc60Pbt+LfEVrlVGlA+W9ipjpOa9EM8ddwGH1GEg6Vj83Snc v6jrfGttiT3LVW6MlQ1mSjWFwpX/+oSdGrOiWUPvhyDpydxmfaYZX/g7bVi3EzB5ijpB i8jA== 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=VSzFTK1mbGC+drfJoR1qSkeASJVkYo0GKpNqRu/zr3s=; b=stt7Cot36bcxBCvN2ekj01aLeJJI6MVBjYBRrlENg3LHlKcG5e485tl8I4/G3ruC9b //PcK345/B7RsFseRBx44WuZfPuZvlypzUyP0BEZmCZ9q5KXGnjr57m8vujAzE2fb7ab U/k+S0SBVkmBcfdvYbjoG6dhYAozLxSdV0zbIUOxFFwe6bDhN6knUlh126CrvY/+x8U+ I7bU+48gGeYndt39sbGAFHuSpTavG8PwNcrHra8UaneVOhuwdxXDZavRsjMF+Psh9QjQ Oyv1qPg/Ko658liQDpvDPz3y8j1F/mhcdKE18W6qlI9XFnpL3py1mxxDDM7OMwRyvZk7 +QmA== X-Gm-Message-State: AHQUAubPD4xw4dgj1d2LzcyTvXbIY3gZZ9vsJwdxw3KqmesWVkAIzfCq h2MHIlr73DvxkSp990RgZg5FVpEx X-Google-Smtp-Source: AHgI3IaM2npDfdUJ+niSz0UAlpHdjeMYCe3BjRElUWjTqi4gFNmTByoclpV5n5vjT085p4ZUoILNeg== X-Received: by 2002:a63:4454:: with SMTP id t20mr305357pgk.42.1549920271722; Mon, 11 Feb 2019 13:24:31 -0800 (PST) Received: from [10.5.5.194] ([50.235.77.202]) by smtp.gmail.com with ESMTPSA id q127sm14899169pgq.39.2019.02.11.13.24.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 11 Feb 2019 13:24:30 -0800 (PST) Date: Mon, 11 Feb 2019 13:24:21 -0800 From: Jeff Tantsura To: "=?utf-8?Q?lsr=40ietf.org?=" , Christian Hopps Cc: "=?utf-8?Q?lsr-chairs=40ietf.org?=" , "=?utf-8?Q?lsr-ads=40ietf.org?=" , chopps@chopps.org Message-ID: <73a5a085-0190-43ca-8cb2-504e4f0be7cf@Spark> In-Reply-To: References: X-Readdle-Message-ID: 73a5a085-0190-43ca-8cb2-504e4f0be7cf@Spark MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="5c61e80d_6fde8af6_4ada" Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 21:24:35 -0000 --5c61e80d_6fde8af6_4ada Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Yes/support Cheers, Jeff On Feb 11, 2019, 2:47 AM -0800, Christian Hopps , wrote: > > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > The aim of this document is to describe the problem space and standardize a way to signal dynamic flooding information. It does not standardize any specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that started as a distributed flooding topology algorithm and morphed into that plus competing ideas on signaling of flooding topology information. The intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG can discuss adding any signaling ideas from this work to the adopted signaling draft (with proper attribution given as appropriate), and two, for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new document without the signaling portion and instead focus on their flooding topology algorithm. This new focused document can be considered in parallel along with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't expect a one-size-fits-all solution. Taking the steps outlined above will help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr --5c61e80d_6fde8af6_4ada Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Yes/support

Cheers,
Jeff
On =46eb 11, 20= 19, 2:47 AM -0800, Christian Hopps <chopps=40chopps.org>, wrote:

Hi =46olks,

We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-0= 2.

The aim of this document is to describe the problem space and standardize= a way to signal dynamic flooding information. It does not standardize an= y specific algorithm for flooding topology creation.

Authors please respond indicating if you are aware of any IPR related to = this work.

We also have another draft (draft-cc-lsr-flooding-reduction-01) that star= ted as a distributed flooding topology algorithm and morphed into that pl= us competing ideas on signaling of flooding topology information. The int= ent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, = the WG can discuss adding any signaling ideas from this work to the adopt= ed signaling draft (with proper attribution given as appropriate), and tw= o, for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new= document without the signaling portion and instead focus on their floodi= ng topology algorithm. This new focused document can be considered in par= allel along with the other algorithm work that has been proposed.

=46looding topology creation is seen as a hard problem for which we don't= expect a one-size-fits-all solution. Taking the steps outlined above wil= l help us move forward on the solutions.

Thanks,
Chris & Acee.
LSR WG Chairs.

=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F
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--5c61e80d_6fde8af6_4ada-- From nobody Tue Feb 12 09:26:25 2019 Return-Path: X-Original-To: lsr@ietf.org Delivered-To: lsr@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id BE378127287; Tue, 12 Feb 2019 09:26:23 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: IETF Meeting Session Request Tool To: Cc: lsr-chairs@ietf.org, aretana.ietf@gmail.com, lflynn@amsl.com, lsr@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <154999238373.8296.2292223369794696842.idtracker@ietfa.amsl.com> Date: Tue, 12 Feb 2019 09:26:23 -0800 Archived-At: Subject: [Lsr] lsr - Update to a Meeting Session Request for IETF 104 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Feb 2019 17:26:24 -0000 An update to a meeting session request has just been submitted by Liz Flynn, on behalf of the lsr working group. --------------------------------------------------------- Working Group Name: Link State Routing Area Name: Routing Area Session Requester: Liz Flynn Number of Sessions: 2 Length of Session(s): 2 Hours, 1.5 Hours Number of Attendees: 100 Conflicts to Avoid: First Priority: lsvr ipsecme idr rtgwg Second Priority: netmod rift Third Priority: bess bier People who must be present: Acee Lindem Christian Hopps Alvaro Retana Resources Requested: Special Requests: --------------------------------------------------------- From nobody Tue Feb 12 13:26:51 2019 Return-Path: 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 0513A124BF6; 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Tue, 12 Feb 2019 13:26:41 -0800 (PST) Received: from 1058052472880 named unknown by gmailapi.google.com with HTTPREST; Tue, 12 Feb 2019 13:26:41 -0800 From: Alvaro Retana In-Reply-To: References: <13762D55-FACF-42B0-8056-F12FBDE1F75D@huawei.com> MIME-Version: 1.0 Date: Tue, 12 Feb 2019 13:26:41 -0800 Message-ID: To: Padmadevi Pillay Esnault , "draft-ietf-ospf-ospfv2-hbit@ietf.org" Cc: Yingzhen Qu , "lsr@ietf.org" , "lsr-chairs@ietf.org" , "Acee Lindem (acee)" Content-Type: multipart/alternative; boundary="000000000000d149330581b91411" Archived-At: Subject: Re: [Lsr] AD Review of draft-ietf-ospf-ospfv2-hbit-06 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Feb 2019 21:26:49 -0000 --000000000000d149330581b91411 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Ping! Any progress on this document? Thanks! Alvaro. On December 17, 2018 at 8:22:25 AM, Acee Lindem (acee) (acee@cisco.com) wrote: Hi Padma, Is the updated draft coming soon? Thanks, Acee =EF=BB=BFOn 11/28/18, 2:31 PM, "Padmadevi Pillay Esnault" wrote: Dear Alvaro Thank you for your review. We will go through the comments and work on them. Thanks Padma on behalf of my co-authors On 11/28/18, 7:53 AM, "Alvaro Retana" wrote: Dear authors: I just finished reading this document. Even though it is relatively short, I have significant concerns and I think it needs more work. Please take a look at the detailed comments in-line below -- I'm highlighting some of the issues here. (1) What is the Update to rfc2328? Please be specific in both the Abstract and the Introduction to indicate how rfc2328 is Updated. Also, see my question about rfc6987 in =C2=A76. (2) Operational/Deployment Considerations. There are several places (specially in =C2=A73) where the specification offers a choice (e.g. by usi= ng MAY). Some of those choices would be better informed if there was a discussion of the considerations behind them. Please take a look at rfc5706 (specially =C2=A72). Either a discussion close to where the behavio= r is specified or a separate section is ok. Please also keep migration in mind (see comments in =C2=A75). (3) Both the IANA and Security Considerations sections need more details. I will wait for them to be addressed before starting the IETF Last Call. Thanks! Alvaro. [The line numbers come from idnits.] ... 11 H-bit Support for OSPFv2 12 draft-ietf-ospf-ospfv2-hbit-06 [nit] Please make the title more descriptive. "non-transit router", "host mode", etc. come to mind. 14 Abstract 16 OSPFv3 defines an option bit for router-LSAs known as the R-bit in 17 RFC5340. If the R-bit is clear, an OSPFv3 router can participate in 18 OSPF topology flooding, however it will not be used as a transit 19 router. In such cases, other routers in the OSPFv3 routing domain 20 only install routes to allow local traffic delivery. This document 21 defines the H-bit functionality to prevent other OSPFv2 routers from 22 using the router for transit traffic in OSPFv2 routing domains as 23 described in RFC 2328. This document updates RFC 2328. [minor] Describing the functionality in terms of OSPFv2 would have been nice. IOW, there's no need (in the Abstract) to force the reader to go figure out what OSPFv3 already did to decide if it's worth reading this document or not. [major] What is the Update to rfc2328? Please be specific, both here and in the Introduction: don't just mention the section updated, but (more important) what is the update about. "This document updates rfc2328 by assigning a bit...changing the SPF process...creating a registry..." All/none/something else? Note that the answer to "what is the update?" doesn't have to be all. I think that the registry creation is a must. But Updating because of the SPF changes means that you expect an rfc2328 implementation to consider the H-bit when running SPF. I think you really mean that implementations of this document (i.e. not all rfc2328 implementations) have to use the modified SPF. That is my guess...please consider the answer carefully. ... 42 Copyright Notice 44 Copyright (c) 2018 IETF Trust and the persons identified as the 45 document authors. All rights reserved. 47 This document is subject to BCP 78 and the IETF Trust's Legal 48 Provisions Relating to IETF Documents 49 (https://trustee.ietf.org/license-info) in effect on the date of 50 publication of this document. Please review these documents 51 carefully, as they describe your rights and restrictions with respect 52 to this document. Code Components extracted from this document must 53 include Simplified BSD License text as described in Section 4.e of 54 the Trust Legal Provisions and are provided without warranty as 55 described in the Simplified BSD License. 57 This document may contain material from IETF Documents or IETF 58 Contributions published or made publicly available before November 59 10, 2008. The person(s) controlling the copyright in some of this 60 material may not have granted the IETF Trust the right to allow 61 modifications of such material outside the IETF Standards Process. 62 Without obtaining an adequate license from the person(s) controlling 63 the copyright in such materials, this document may not be modified 64 outside the IETF Standards Process, and derivative works of it may 65 not be created outside the IETF Standards Process, except to format 66 it for publication as an RFC or to translate it into languages other 67 than English. [major] As far as I can tell, the first version of draft-keyupate-ospf-ospfv2-hbit (the predecessor of this document) was published in 2015. So the copyright text above doesn't apply. Are we missing other predecessors? If not, then this issue should be easy to fix. In at least the XML editor that I use, there's an option to indicate pre-RFC5378 work, or not. In this case it seems like it should be No. ... 85 1. Introduction [minor] Same comment as for the Abstract: describing the functionality in terms of OSPFv2 would have been nicer. You can still make the reference to the R-bit at the end, if you really want to. 87 OSPFv3 [RFC5340] defines an option bit for router-LSAs known as the 88 R-bit. If the R-bit is clear, an OSPFv3 router can participate in 89 OSPFv3 topology flooding without acting as a transit router. In such 90 cases, other routers in the OSPFv3 routing domain only install routes 91 used for local traffic. 93 This functionality is particularly useful for BGP Route Reflectors, 94 known as virtual Route Reflectors (vRRs), that are not in the 95 forwarding path but are in central locations such as data centers. 96 Such Route Reflectors typically are used for route distribution and 97 are not capable of forwarding transit traffic. However, they need to 98 learn the OSPF topology for: 100 1. SPF computation for Optimal Route Reflection functionality as 101 defined in [I-D.ietf-idr-bgp-optimal-route-reflection] 103 2. Reachability resolution for its Route Reflector Clients. [nit] Clearly route reflection is not the only motivation for this work. The justification only related to RRs seems gratuitous. Just a nit... 105 This document defines the R-bit functionality equivalent for OSPFv2 106 defined in [RFC2328] by introducing a new router-LSA bit known as the 107 "H-bit". This document updates appendix A.4.2 of RFC 2328. [nit] s/OSPFv2 defined in [RFC2328]/OSPFv2 [RFC2328] It sounds as if "the R-bit functionality equivalent for OSPFv2" is already in rfc2328. [major] Please be specific about what the Update is. ... 117 3. H-bit Support 119 This document defines a new router-LSA bit known as the Host Bit or 120 the H-bit. An OSPFv2 router advertising a router-LSA with the H-bit 121 set indicates to other OSPFv2 routers in the area supporting the 122 functionality that it MUST NOT be used as a transit router. The bit 123 value usage of the H-bit is reversed from the R-bit defined in OSPFv3 124 [RFC5340] to support backward compatibility. The modified OSPFv2 125 router-LSA format is: [minor] "...MUST NOT be used as a transit router" Put a forward reference to =C2=A74. [nit] The text keeps making reference to the R-bit. Even though there is a relationship, the H-bit is an independent feature. IOW, I don't think there's a need to explain the relationship to OSPFv3. [minor] On the same topic: The comparison to OSPFv3 is made and the "reverse" bit setting is justified "to support backward compatibility", but that is not explained anywhere. I was hoping that =C2=A75 (Auto Discovery a= nd Backward Compatibility) would say something, but it doesn't. 127 0 1 2 3 128 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 129 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 130 | LS age | Options | 1 | 131 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 132 | Link State ID | 133 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 134 | Advertising Router | 135 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 136 | LS sequence number | 137 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 138 | LS checksum | length | 139 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 140 |H|0|0|N|W|V|E|B| 0 | # links | 141 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 142 | Link ID | 143 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 144 | Link Data | 145 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 146 | Type | # TOS | metric | 147 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 148 | ... | 149 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 150 | TOS | 0 | TOS metric | 151 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 152 | Link ID | 153 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 154 | Link Data | 155 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 156 | ... | 158 bit H 159 When set, an OSPFv2 router is a non-transit router and is 160 incapable of forwarding transit traffic. [nit] Please label the figure: Figure 1... [minor] Even though it seems obvious from the figure, please be explicit in saying that the H-bit is the first bit (or however that bit is identified)... 162 When the H-bit is set, an OSPFv2 router is a non-transit router and 163 should not be used to forward transit traffic. In this mode, the 164 other OSPFv2 routers in the area SHOULD NOT use the originating 165 OSPFv2 router for transit traffic, but MAY use the OSPFv2 router for 166 local traffic destined to that OSPFv2 router. [minor] The first/second sentences seem redundant: "should not be used to forward transit traffic...SHOULD NOT use the originating OSPFv2 router for transit traffic". [major] When would the non-transit router be used for transit? IOW, why use "SHOULD NOT" and not "MUST NOT"? [major] "MAY use the OSPFv2 router for local traffic destined to that OSPFv2 router" I'm not sure what behavior is being specified here. The text sounds as if it was optional to even consider the router as a traffic destination. Is that the intent? Why? What would make a network operator decide one way or the other? 168 An OSPFv2 router originating a router-LSA with the H-bit set SHOULD 169 advertise all its non-local router links with a link cost of 170 MaxLinkMetric as defined in Section 3 of [RFC6987]. This is to 171 increase the applicability of the H-bit to partial deployments where 172 it is the responsibility of the operator to ensure that OSPFv2 173 routers not supporting the H-bit do not install routes causing 174 routing loops. [major] When would a router not advertise MaxLinkMetric? IOW, why use SHOULD and not MUST? [major] What are "non-local router links"? I always thought of links to be local to the router...what am I missing? [nit] s/advertise all its non-local router links with a link cost of MaxLinkMetric as defined in Section 3 of [RFC6987]/advertise all its non-local router links with a link cost of MaxLinkMetric [RFC6987] 176 When the H-bit is set, IPv4 prefixes associated with local interfaces 177 in other areas MAY be advertised in summary LSAs. Non-local IPv4 178 prefixes, e.g., those advertised by other routers and installed 179 during the SPF computation, MAY be advertised in summary-LSAs if 180 configured by policy. Likewise, when the H-bit is set, only IPv4 181 prefixes associated with local interfaces MAY be advertised in AS- 182 external LSAs. Non-local IPv4 prefixes, e.g., those exported from 183 other routing protocols, MUST NOT be advertised in AS-external-LSAs. 184 Finally, when the H-bit is set, an Area Border Router (ABR) MUST 185 advertise a consistent H-bit setting in its self-originated router- 186 LSAs for all attached areas. [minor] Some of the behavior specified in this paragraph may be non intuitive -- for example: "When the H-bit is set, IPv4 prefixes associated with local interfaces in other areas MAY be advertised in summary LSAs." During normal operation (aka rfc2328), these prefixes are always advertised (assuming normal areas, etc.)...and given that these are local to the router, it can be argued that one is not using the router as transit...on the other hand, going to a different area can be interpreted as transit. In either case, it would be nice if more was said about the optional nature of including these prefixes in the summary LSA. What are the operational considerations? [minor] The same comment for "prefixes associated with local interfaces MAY be advertised in AS-external LSAs". [major] "Non-local IPv4 prefixes...MAY be advertised in summary-LSAs if configured by policy." Doesn't advertising result in the router being transit? Doesn't it defeats the purpose of setting the H-bit? But there may be operational reasons to do so -- e.g. if the router is the only ABR.. --000000000000d149330581b91411 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =
Ping!

Any progress on this document?

Thanks!

Alvaro.

On December 17, 20= 18 at 8:22:25 AM, Acee Lindem (acee) (ace= e@cisco.com) wrote:

Hi Padma, =20
Is the updated draft coming soon? =20
Thanks,
Acee =20

=EF=BB=BFOn 11/28/18, 2:31 PM, "Padmadevi Pillay Esnault" <= ;padma@huawei.com> wrote:

Dear Alvaro
=20
Thank you for your review.
=20
We will go through the comments and work on them.
=20
Thanks
Padma on behalf of my co-authors
=20
On 11/28/18, 7:53 AM, "Alvaro Retana" <aretana.ietf@gmail.com> wrote:
=20
Dear authors:
=20
I just finished reading this document. Even though it is relat= ively short,
I have significant concerns and I think it needs more work. Pl= ease take a
look at the detailed comments in-line below -- I'm highligh= ting some of the
issues here.
=20
(1) What is the Update to rfc2328? Please be specific in both = the Abstract
and the Introduction to indicate how rfc2328 is Updated. Also,= see my
question about rfc6987 in =C2=A76.
=20
(2) Operational/Deployment Considerations. There are several p= laces
(specially in =C2=A73) where the specification offers a choice = (e.g. by using
MAY). Some of those choices would be better informed if there = was a
discussion of the considerations behind them. Please take a lo= ok at
rfc5706 (specially =C2=A72). Either a discussion close to wher= e the behavior is
specified or a separate section is ok. Please also keep migrat= ion in mind
(see comments in =C2=A75).
=20
(3) Both the IANA and Security Considerations sections need mor= e details.
=20
=20
I will wait for them to be addressed before starting the IETF L= ast Call.
=20
Thanks!
=20
Alvaro.
=20
=20
[The line numbers come from idnits.]
=20
...
11 H-bit Support for OSPFv2
12 draft-ietf-ospf-ospfv2-hbit-06
=20
[nit] Please make the title more descriptive. "non-transi= t router", "host
mode", etc. come to mind.
=20
=20
14 Abstract
=20
16 OSPFv3 defines an option bit for router-LSAs known as the = R-bit in
17 RFC5340. If the R-bit is clear, an OSPFv3 router can part= icipate in
18 OSPF topology flooding, however it will not be used as a t= ransit
19 router. In such cases, other routers in the OSPFv3 routin= g domain
20 only install routes to allow local traffic delivery. This= document
21 defines the H-bit functionality to prevent other OSPFv2 ro= uters from
22 using the router for transit traffic in OSPFv2 routing dom= ains as
23 described in RFC 2328. This document updates RFC 2328.
=20
[minor] Describing the functionality in terms of OSPFv2 would h= ave been
nice. IOW, there's no need (in the Abstract) to force the = reader to go
figure out what OSPFv3 already did to decide if it's worth = reading this
document or not.
=20
[major] What is the Update to rfc2328? Please be specific, bot= h here and
in the Introduction: don't just mention the section updated= , but (more
important) what is the update about. "This document updat= es rfc2328 by
assigning a bit...changing the SPF process...creating a registr= y..."
All/none/something else?
=20
Note that the answer to "what is the update?" doesn&#= 39;t have to be all. I
think that the registry creation is a must. But Updating becau= se of the
SPF changes means that you expect an rfc2328 implementation to = consider the
H-bit when running SPF. I think you really mean that implement= ations of
this document (i.e. not all rfc2328 implementations) have to us= e the
modified SPF. That is my guess...please consider the answer ca= refully.
=20
=20
...
42 Copyright Notice
=20
44 Copyright (c) 2018 IETF Trust and the persons identified a= s the
45 document authors. All rights reserved.
=20
47 This document is subject to BCP 78 and the IETF Trust'= s Legal
48 Provisions Relating to IETF Documents
49 (https:/= /trustee.ietf.org/license-info) in effect on the date of
50 publication of this document. Please review these documen= ts
51 carefully, as they describe your rights and restrictions w= ith respect
52 to this document. Code Components extracted from this doc= ument must
53 include Simplified BSD License text as described in Sectio= n 4.e of
54 the Trust Legal Provisions and are provided without warran= ty as
55 described in the Simplified BSD License.
=20
57 This document may contain material from IETF Documents or = IETF
58 Contributions published or made publicly available before = November
59 10, 2008. The person(s) controlling the copyright in some= of this
60 material may not have granted the IETF Trust the right to = allow
61 modifications of such material outside the IETF Standards = Process.
62 Without obtaining an adequate license from the person(s) c= ontrolling
63 the copyright in such materials, this document may not be = modified
64 outside the IETF Standards Process, and derivative works o= f it may
65 not be created outside the IETF Standards Process, except = to format
66 it for publication as an RFC or to translate it into langu= ages other
67 than English.
=20
[major] As far as I can tell, the first version of
draft-keyupate-ospf-ospfv2-hbit (the predecessor of this docume= nt) was
published in 2015. So the copyright text above doesn't app= ly. Are we
missing other predecessors?
=20
If not, then this issue should be easy to fix. In at least the= XML editor
that I use, there's an option to indicate pre-RFC5378 work,= or not. In
this case it seems like it should be No.
=20
=20
...
85 1. Introduction
=20
[minor] Same comment as for the Abstract: describing the functi= onality in
terms of OSPFv2 would have been nicer. You can still make the = reference to
the R-bit at the end, if you really want to.
=20
87 OSPFv3 [RFC5340] defines an option bit for router-LSAs kno= wn as the
88 R-bit. If the R-bit is clear, an OSPFv3 router can partic= ipate in
89 OSPFv3 topology flooding without acting as a transit route= r. In such
90 cases, other routers in the OSPFv3 routing domain only ins= tall routes
91 used for local traffic.
=20
93 This functionality is particularly useful for BGP Route Re= flectors,
94 known as virtual Route Reflectors (vRRs), that are not in = the
95 forwarding path but are in central locations such as data = centers.
96 Such Route Reflectors typically are used for route distrib= ution and
97 are not capable of forwarding transit traffic. However, t= hey need to
98 learn the OSPF topology for:
=20
100 1. SPF computation for Optimal Route Reflection function= ality as
101 defined in [I-D.ietf-idr-bgp-optimal-route-reflection= ]
=20
103 2. Reachability resolution for its Route Reflector Clien= ts.
=20
[nit] Clearly route reflection is not the only motivation for t= his work.
The justification only related to RRs seems gratuitous. Just a= nit...
=20
105 This document defines the R-bit functionality equivalent = for OSPFv2
106 defined in [RFC2328] by introducing a new router-LSA bit = known as the
107 "H-bit". This document updates appendix A.4.2 = of RFC 2328.
=20
[nit] s/OSPFv2 defined in [RFC2328]/OSPFv2 [RFC2328] It sounds= as if "the
R-bit functionality equivalent for OSPFv2" is already in r= fc2328.
=20
[major] Please be specific about what the Update is.
=20
=20
...
117 3. H-bit Support
=20
119 This document defines a new router-LSA bit known as the H= ost Bit or
120 the H-bit. An OSPFv2 router advertising a router-LSA wit= h the H-bit
121 set indicates to other OSPFv2 routers in the area support= ing the
122 functionality that it MUST NOT be used as a transit route= r. The bit
123 value usage of the H-bit is reversed from the R-bit defin= ed in OSPFv3
124 [RFC5340] to support backward compatibility. The modifie= d OSPFv2
125 router-LSA format is:
=20
[minor] "...MUST NOT be used as a transit router" Pu= t a forward reference
to =C2=A74.
=20
[nit] The text keeps making reference to the R-bit. Even thoug= h there is a
relationship, the H-bit is an independent feature. IOW, I don&= #39;t think
there's a need to explain the relationship to OSPFv3.
=20
[minor] On the same topic: The comparison to OSPFv3 is made an= d the
"reverse" bit setting is justified "to support b= ackward compatibility", but
that is not explained anywhere. I was hoping that =C2=A75 (Aut= o Discovery and
Backward Compatibility) would say something, but it doesn't= .
=20
127 0 1 2 = 3
128 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 = 6 7 8 9 0 1
129 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
130 | LS age | Options | = 1 |
131 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
132 | Link State ID = |
133 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
134 | Advertising Router = |
135 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
136 | LS sequence number = |
137 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
138 | LS checksum | length = |
139 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
140 |H|0|0|N|W|V|E|B| 0 | # links = |
141 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
142 | Link ID = |
143 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
144 | Link Data = |
145 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
146 | Type | # TOS | metric = |
147 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
148 | ... = |
149 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
150 | TOS | 0 | TOS metri= c |
151 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
152 | Link ID = |
153 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
154 | Link Data = |
155 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+-+
156 | ... = |
=20
158 bit H
159 When set, an OSPFv2 router is a non-transit router= and is
160 incapable of forwarding transit traffic.
=20
[nit] Please label the figure: Figure 1...
=20
[minor] Even though it seems obvious from the figure, please be= explicit in
saying that the H-bit is the first bit (or however that bit is
identified)...
=20
162 When the H-bit is set, an OSPFv2 router is a non-transit = router and
163 should not be used to forward transit traffic. In this m= ode, the
164 other OSPFv2 routers in the area SHOULD NOT use the origi= nating
165 OSPFv2 router for transit traffic, but MAY use the OSPFv2= router for
166 local traffic destined to that OSPFv2 router.
=20
[minor] The first/second sentences seem redundant: "should= not be used to
forward transit traffic...SHOULD NOT use the originating OSPFv2= router for
transit traffic".
=20
[major] When would the non-transit router be used for transit? = IOW, why
use "SHOULD NOT" and not "MUST NOT"?
=20
[major] "MAY use the OSPFv2 router for local traffic desti= ned to that
OSPFv2 router" I'm not sure what behavior is being s= pecified here. The
text sounds as if it was optional to even consider the router a= s a traffic
destination. Is that the intent? Why? What would make a netw= ork operator
decide one way or the other?
=20
168 An OSPFv2 router originating a router-LSA with the H-bit = set SHOULD
169 advertise all its non-local router links with a link cost= of
170 MaxLinkMetric as defined in Section 3 of [RFC6987]. This= is to
171 increase the applicability of the H-bit to partial deploy= ments where
172 it is the responsibility of the operator to ensure that O= SPFv2
173 routers not supporting the H-bit do not install routes ca= using
174 routing loops.
=20
[major] When would a router not advertise MaxLinkMetric? IOW, = why use
SHOULD and not MUST?
=20
[major] What are "non-local router links"? I always = thought of links to be
local to the router...what am I missing?
=20
[nit] s/advertise all its non-local router links with a link co= st of
MaxLinkMetric as defined in Section 3 of [RFC6987]/advertise al= l its
non-local router links with a link cost of MaxLinkMetric [RFC69= 87]
=20
176 When the H-bit is set, IPv4 prefixes associated with loca= l interfaces
177 in other areas MAY be advertised in summary LSAs. Non-lo= cal IPv4
178 prefixes, e.g., those advertised by other routers and ins= talled
179 during the SPF computation, MAY be advertised in summary-= LSAs if
180 configured by policy. Likewise, when the H-bit is set, o= nly IPv4
181 prefixes associated with local interfaces MAY be advertis= ed in AS-
182 external LSAs. Non-local IPv4 prefixes, e.g., those expo= rted from
183 other routing protocols, MUST NOT be advertised in AS-ext= ernal-LSAs.
184 Finally, when the H-bit is set, an Area Border Router (AB= R) MUST
185 advertise a consistent H-bit setting in its self-originat= ed router-
186 LSAs for all attached areas.
=20
[minor] Some of the behavior specified in this paragraph may be= non
intuitive -- for example: "When the H-bit is set, IPv4 pre= fixes associated
with local interfaces in other areas MAY be advertised in summa= ry LSAs."
During normal operation (aka rfc2328), these prefixes are alwa= ys
advertised (assuming normal areas, etc.)...and given that these= are local
to the router, it can be argued that one is not using the route= r as
transit...on the other hand, going to a different area can be i= nterpreted
as transit. In either case, it would be nice if more was said = about the
optional nature of including these prefixes in the summary LSA.= What are
the operational considerations?
=20
[minor] The same comment for "prefixes associated with loc= al interfaces MAY
be advertised in AS-external LSAs".
=20
[major] "Non-local IPv4 prefixes...MAY be advertised in su= mmary-LSAs if
configured by policy." Doesn't advertising result in = the router being
transit? Doesn't it defeats the purpose of setting the H-b= it? But there
may be operational reasons to do so -- e.g. if the router is th= e only ABR..
=20
=20

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c2F5IHNvbWV0aGluZywgYnV0IGl0IGRvZXNuJ3Q8bzpwPjwvbzpwPjwvcD4NCjwvZGl2Pg0KPC9k aXY+DQo8L2Jsb2NrcXVvdGU+DQo8L2Rpdj4NCjwvYm9keT4NCjwvaHRtbD4NCg== --_000_11E2FBA4AD8F4D838F4904640473C546arrcuscom_-- From nobody Tue Feb 12 17:48:52 2019 Return-Path: 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 19E06130EE1; Tue, 12 Feb 2019 17:48:46 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 XI_u6T79hQJ4; Tue, 12 Feb 2019 17:48:43 -0800 (PST) Received: from m21397.mail.qiye.163.com (m21397.mail.qiye.163.com [223.252.213.97]) by ietfa.amsl.com (Postfix) with ESMTP id D36A91295EC; Tue, 12 Feb 2019 17:48:41 -0800 (PST) Received: from WangajPC (unknown [219.142.69.77]) by m21397.mail.qiye.163.com (Hmail) with ESMTPA id D24E8142EC6; Wed, 13 Feb 2019 09:48:36 +0800 (CST) From: "Aijun Wang" To: "'Acee Lindem \(acee\)'" , Cc: References: <0CFE25DF-585A-4DDF-95B0-FA9FBBD1F3F7@cisco.com> In-Reply-To: <0CFE25DF-585A-4DDF-95B0-FA9FBBD1F3F7@cisco.com> Date: Wed, 13 Feb 2019 09:48:37 +0800 Message-ID: <00da01d4c33e$3d01bde0$b70539a0$@org.cn> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00DB_01D4C381.4B24FDE0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AQHUv8/c2W3nHd03h0O1/O0ZW1UquqXc+/7g Content-Language: zh-cn X-HM-Spam-Status: e1kIGBQJHllBS1VLV1koWUFKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZMjUtOj cyP0FLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6NAw6Ezo*FTlJTTY9DxVLOjk1 MUsKFAxVSlVKTk5LS0lJTklLSUpLVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlJSkJVSk9JVU1CVUxMWVdZCAFZQUpLQ01INwY+ X-HM-Tid: 0a68e48aa0de7f6bkuukd24e8142ec6 Archived-At: Subject: [Lsr] =?utf-8?b?562U5aSNOiAgSVBSIFBvbGwgb24gIk9TUEYgRXh0ZW5zaW9u?= =?utf-8?q?_for_Prefix_Originator=22_-_draft-wang-lsr-ospf-prefix-originat?= =?utf-8?q?or-ext-01?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Feb 2019 01:48:46 -0000 This is a multi-part message in MIME format. ------=_NextPart_000_00DB_01D4C381.4B24FDE0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi, Acee: =20 Apart from the IPR declared in https://datatracker.ietf.org/ipr/3420/ , = I am not aware of any other IPR. Thanks for your efforts. =20 =20 Best Regards. =20 Aijun Wang Network R&D and Operation Support Department China Telecom Corporation Limited Beijing Research Institute,Beijing, = China. =E5=8F=91=E4=BB=B6=E4=BA=BA: Acee Lindem (acee) [mailto:acee@cisco.com]=20 =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2019=E5=B9=B42=E6=9C=889=E6=97=A5 = 1:01 =E6=94=B6=E4=BB=B6=E4=BA=BA: = draft-wang-lsr-ospf-prefix-originator-ext@ietf.org =E6=8A=84=E9=80=81: lsr@ietf.org =E4=B8=BB=E9=A2=98: [Lsr] IPR Poll on "OSPF Extension for Prefix = Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 =20 Authors,=20 =20 In preparation for a WG adoption call: =20 Are you aware of any IPR relating to = https://datatracker.ietf.org/doc/draft-wang-lsr-ospf-prefix-originator-ex= t? If so, has this IPR been disclosed in compliance with IETF IPR rules = (see RFCs 3979, 4879, 3669 and 5378 for more details). If you are listed = as a document author or contributor please respond to this email = regardless of whether or not you are aware of any relevant IPR. *The = response needs to be sent to the LSR WG mailing list.* The document will = not advance to the next stage until a response has been received from = each author and contributor. If you are on the LSR WG email list but are = not listed as an author or contributor, then please explicitly respond = only if you are aware of any IPR that has not yet been disclosed in = conformance with IETF rules. =20 Thanks, Acee =20 =20 ------=_NextPart_000_00DB_01D4C381.4B24FDE0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi, = Acee:

 

Apart from the IPR declared in = https://datatracker.ietf.= org/ipr/3420/ , I am not aware of any other = IPR.

Thanks for your = efforts.

 

 

Best = Regards.

 

Aijun = Wang

Network R&D = and Operation Support Department

China Telecom = Corporation Limited Beijing Research Institute,Beijing, = China.

=E5=8F=91=E4=BB= =B6=E4=BA=BA: Acee Lindem = (acee) [mailto:acee@cisco.com]
=E5=8F=91=E9=80= =81=E6=97=B6=E9=97=B4: = 2019=E5=B9=B42=E6=9C=889=E6=97=A5 1:01
=E6=94=B6=E4=BB=B6=E4=BA=BA: = draft-wang-lsr-ospf-prefix-originator-ext@ietf.org
=E6=8A=84= =E9=80=81: = lsr@ietf.org
=E4=B8=BB=E9=A2=98: [Lsr] IPR Poll on = "OSPF Extension for Prefix Originator" - = draft-wang-lsr-ospf-prefix-originator-ext-01

=

 

Authors, =

 

In preparation for a = WG adoption call:

 

Are you aware of any = IPR relating to https://datatracker.ietf.org/doc/draft-wang-lsr-ospf-prefix-or= iginator-ext? If so, has this IPR been disclosed in compliance with = IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). If = you are listed as a document author or contributor please respond to = this email regardless of whether or not you are aware of any relevant = IPR. *The response needs to be sent to the LSR WG mailing list.* The = document will not advance to the next stage until a response has been = received from each author and contributor. If you are on the LSR WG = email list but are not listed as an author or contributor, then please = explicitly respond only if you are aware of any IPR that has not yet = been disclosed in conformance with IETF rules.

 

Thanks,
Acee

 

 

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([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tkMLR371U2kS; Tue, 12 Feb 2019 22:19:59 -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 CC77D12D4E9; Tue, 12 Feb 2019 22:19:58 -0800 (PST) Received: from LHREML711-CAH.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id AED19E3136C720D24FDD; Wed, 13 Feb 2019 06:19:56 +0000 (GMT) Received: from NKGEML411-HUB.china.huawei.com (10.98.56.70) by LHREML711-CAH.china.huawei.com (10.201.108.34) with Microsoft SMTP Server (TLS) id 14.3.408.0; Wed, 13 Feb 2019 06:19:55 +0000 Received: from NKGEML515-MBX.china.huawei.com ([fe80::a54a:89d2:c471:ff]) by nkgeml411-hub.china.huawei.com ([10.98.56.70]) with mapi id 14.03.0415.000; Wed, 13 Feb 2019 14:19:50 +0800 From: "Dongjie (Jimmy)" To: "Acee Lindem (acee)" , Aijun Wang , "draft-wang-lsr-ospf-prefix-originator-ext@ietf.org" CC: "lsr@ietf.org" Thread-Topic: [Lsr] IPR Poll on "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 Thread-Index: AQHUw2QgRekFuDaosU+THFAl0E5KOA== Date: Wed, 13 Feb 2019 06:19:50 +0000 Message-ID: 7E935CDE-28BD-4853-A3EA-0DE097831DF8 References: In-Reply-To: Accept-Language: en-US, zh-CN Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: multipart/alternative; boundary="_000_7E935CDE28BD4853A3EA0DE097831DF8_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] IPR Poll on "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Feb 2019 06:20:01 -0000 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(acee)" , "draft-wang-lsr-ospf-prefix-originator-ext@ietf.org" CC: "lsr@ietf.org" Thread-Topic: [Lsr] IPR Poll on "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 Thread-Index: AQHUv8/c2W3nHd03h0O1/O0ZW1UquqXc+/7ggAB5g9A= Date: Wed, 13 Feb 2019 09:01:14 +0000 Message-ID: <05026402089740fdbb852b4f867e7ea4@XCH-ALN-008.cisco.com> References: <0CFE25DF-585A-4DDF-95B0-FA9FBBD1F3F7@cisco.com> <00da01d4c33e$3d01bde0$b70539a0$@org.cn> In-Reply-To: <00da01d4c33e$3d01bde0$b70539a0$@org.cn> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.65.74.113] Content-Type: multipart/alternative; boundary="_000_05026402089740fdbb852b4f867e7ea4XCHALN008ciscocom_" MIME-Version: 1.0 X-Outbound-SMTP-Client: 173.36.7.16, xch-aln-006.cisco.com X-Outbound-Node: rcdn-core-5.cisco.com Archived-At: Subject: Re: [Lsr] IPR Poll on "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Feb 2019 09:01:40 -0000 --_000_05026402089740fdbb852b4f867e7ea4XCHALN008ciscocom_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 SGkgQWNlZSwNCg0KSSBhbSBub3QgYXdhcmUgb2YgYW55IElQUiBvdGhlciB0aGFuIHRoZSBvbmUg ZGlzY2xvc2VkIGJlbG93Lg0KDQpUaGFua3MsDQpLZXRhbg0KDQpGcm9tOiBBaWp1biBXYW5nIDx3 YW5nYWlqdW5AdHNpbmdodWEub3JnLmNuPg0KU2VudDogMTMgRmVicnVhcnkgMjAxOSAwNzoxOQ0K VG86IEFjZWUgTGluZGVtIChhY2VlKSA8YWNlZUBjaXNjby5jb20+OyBkcmFmdC13YW5nLWxzci1v c3BmLXByZWZpeC1vcmlnaW5hdG9yLWV4dEBpZXRmLm9yZw0KQ2M6IGxzckBpZXRmLm9yZw0KU3Vi amVjdDog562U5aSNOiBbTHNyXSBJUFIgUG9sbCBvbiAiT1NQRiBFeHRlbnNpb24gZm9yIFByZWZp eCBPcmlnaW5hdG9yIiAtIGRyYWZ0LXdhbmctbHNyLW9zcGYtcHJlZml4LW9yaWdpbmF0b3ItZXh0 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c3Bhbj48L3A+DQo8cCBjbGFzcz0iTXNvTm9ybWFsIj48c3BhbiBzdHlsZT0iZm9udC1zaXplOjEx LjBwdCI+VGhhbmtzLDxvOnA+PC9vOnA+PC9zcGFuPjwvcD4NCjxwIGNsYXNzPSJNc29Ob3JtYWwi PjxzcGFuIHN0eWxlPSJmb250LXNpemU6MTEuMHB0Ij5BY2VlPG86cD48L286cD48L3NwYW4+PC9w Pg0KPHAgY2xhc3M9Ik1zb05vcm1hbCI+PHNwYW4gc3R5bGU9ImZvbnQtc2l6ZToxMS4wcHQiPjxv OnA+Jm5ic3A7PC9vOnA+PC9zcGFuPjwvcD4NCjwvZGl2Pg0KPC9ib2R5Pg0KPC9odG1sPg0K --_000_A4351C7F183D4490BD3C5ADC5C087F84ciscocom_-- From nobody Wed Feb 13 13:51:10 2019 Return-Path: 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 25BEF12F1A5 for ; Wed, 13 Feb 2019 13:51:07 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 x5oA70nQwVvg for ; Wed, 13 Feb 2019 13:51:02 -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 7E4D112785F for ; Wed, 13 Feb 2019 13:51:02 -0800 (PST) Received: from LHREML713-CAH.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id B9A509933FAF075852F4 for ; Wed, 13 Feb 2019 21:51:00 +0000 (GMT) Received: from lhreml708-chm.china.huawei.com (10.201.108.57) by LHREML713-CAH.china.huawei.com (10.201.108.36) with Microsoft SMTP Server (TLS) id 14.3.408.0; Wed, 13 Feb 2019 21:50:59 +0000 Received: from lhreml708-chm.china.huawei.com (10.201.108.57) by lhreml708-chm.china.huawei.com (10.201.108.57) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Wed, 13 Feb 2019 21:50:59 +0000 Received: from SJCEML701-CHM.china.huawei.com (10.208.112.40) by lhreml708-chm.china.huawei.com (10.201.108.57) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA_P256) id 15.1.1591.10 via Frontend Transport; Wed, 13 Feb 2019 21:50:59 +0000 Received: from SJCEML521-MBX.china.huawei.com ([169.254.1.95]) by SJCEML701-CHM.china.huawei.com ([169.254.3.144]) with mapi id 14.03.0415.000; Wed, 13 Feb 2019 13:50:57 -0800 From: Huaimo Chen To: Peter Psenak , "Acee Lindem (acee)" , Christian Hopps , "lsr@ietf.org" Thread-Topic: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Thread-Index: AQHUuilbECC1DxP5/E+8dX31Ej0g66XL9lOggALa/AD//3qaEIAEyqeAgAs0jTA= Date: Wed, 13 Feb 2019 21:50:56 +0000 Message-ID: <5316A0AB3C851246A7CA5758973207D463B4A6AB@sjceml521-mbx.china.huawei.com> References: <5316A0AB3C851246A7CA5758973207D463B3B9D8@sjceml521-mbx.china.huawei.com> <8378287F-27B9-4663-A22B-F8A2EC6C9FC3@cisco.com> <5316A0AB3C851246A7CA5758973207D463B46315@sjceml521-mbx.china.huawei.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.212.247.203] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Feb 2019 21:51:07 -0000 Hi Peter, My explanations/answers are in line below with prefix [HC]. -----Original Message----- From: Peter Psenak [mailto:ppsenak@cisco.com]=20 Sent: Wednesday, February 6, 2019 4:58 AM To: Huaimo Chen ; Acee Lindem (acee) ; Christian Hopps ; lsr@ietf.org Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Hi Huaimo, On 03/02/2019 17:58 , Huaimo Chen wrote: > Hi Acee, > > > > I agree with you on keeping the signaling for two modes. The other=20 > parts for the distributed solution need to be removed. There are no "other" parts specific for the distributed solution. [HC] Some behaviors for the distributed solution/mode are described in draf= t-li-dynamic-flooding. For example, there are a few of places from page 27 = to 30, which define the behaviors specific for the distributed solution/mod= e. draft-li-dyanmic-flooding defines: 1. the signalling that is common and used by both modes 2. distribution of = the flooding-topology, which is specific to centralized mode 3. common beha= vior of the nodes that support the extension, which is independent of the m= ode of operation. [HC] In addition to these, draft-cc-lsr-flooding-reduction defines more, in= cluding concrete protections, operations, and algorithms for computing a fl= ooding topology. Best Regards, Huaimo thanks, Peter > > > > Best Regards, > > Huaimo > > *From:* Acee Lindem (acee) [mailto:acee@cisco.com] > *Sent:* Sunday, February 3, 2019 11:45 AM > *To:* Huaimo Chen ; Christian Hopps=20 > ; lsr@ietf.org > *Subject:* Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft=20 > Redux] > > > > Hi Huaimo, > > > > See inline. > > > > *From: *Lsr > on=20 > behalf of Huaimo Chen > > *Date: *Saturday, February 2, 2019 at 12:27 AM > *To: *Christian Hopps >,=20 > "lsr@ietf.org " > > *Subject: *Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft=20 > Redux] > > > > Hi Everyone, > > > > We proposed the distributed solution first, and Tony proposed the=20 > centralized solution first. Tony added the distributed solution=20 > (except for the algorithms to compute flooding topology) into his=20 > draft. And then we added the centralized solution into our draft. The=20 > latest versions of the two drafts have largely converged at least at=20 > the high level to a solution for solving the same problem. > > > > Our draft has multiple key technical advantages over Tony's draft as=20 > we described in our email to the LSR list, which are summarized below: > > 1. It uses a fraction of flooding resource (i.e., it is multiple > times more efficient in flooding topology encoding); > > 2. It provides fault tolerance to multiple failures, minimizing > impact on network convergence, thus minimizing traffic lose; and > > 3. It is simpler and needs less processing time (i.e., faster and > more efficient) in multiple scenarios. > > Based on the technical merits, our draft should be moved forward. > However, Chair proposed to move Tony's draft forward and have us work=20 > on a distributed algorithm as we started with. > > > > I think that the distributed solution in Tony's draft needs to be=20 > removed and they work on the centralized solution. We remove the=20 > centralized solution from our draft and work on the distributed solution. > > > > I'm against "cutting the baby in half" given that the signaling for=20 > the distributed solution is a proper subset of what is required for=20 > the centralized solution. It is undesirable to have different=20 > signaling for the two modes. For the distributed algorithm you are=20 > proposing, do see problems with the signaling? > > > > Thanks, > > Acee > > > > Best Regards, > > Huaimo > > > > -----Original Message----- > > From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of Christian Hopps > > Sent: Friday, February 1, 2019 7:26 AM > > To: lsr@ietf.org > > Cc: chopps@chopps.org > > Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] > > > > > > Summary of where we are at with dynamic flooding reduction: > > > > - We have a well written original work that came first and described=20 > the problems as well as a TLVs to allow for a centralized solution=20 > (draft-li-dyanmic-flooding). We do not need to standardize the=20 > centralized algorithm. > > > > - A small change to this work allowed for distributed algorithms and=20 > for outside work on distributed algorithms to continue in parallel. > > > > - We have another original work that started primarily as a=20 > distributed algorithm > > (draft-cc-ospf-flooding-reduction) > > > > - Finally we also have: > > - Cross-pollination of ideas. > > - Failed attempts at merging. > > - An authors list "Arms-Race". > > > > Moving forward: > > > > - During IETF 103 I proposed we have no conflict if we: > > > > 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > > 2) have authors of draft-cc-lsr-flooding-reduction work on a=20 > distributed algorithm as they started with. > > > > - Acee agreed during the meeting (as chair) that this was the best way=20 > forward. We had some agreement form the floor as well.. > > > > - Any good ideas regarding the distribution of a centralized topology=20 > can be debated and added (with appropriate attribution) to the base=20 > document after we adopt one. > > > > - This is what happens when we adopt a document as WG work, we work on it= . > > > > - The original authors of the distributed solution can continue to=20 > work on their distributed algorithm in a separate document which would=20 > also need standardization. > > > > Does anyone see a serious problem with this path forward? > > > > Thanks, > > Chris & Acee. > > LSR Chairs. > > > > Christian Hopps > writes: > > > >> We've had the authors of the individual conflicting drafts take a=20 >> shot > at merging their work. > >> > >> This has failed. > >> > >> Here is the full history (which I also summarized during IETF103 as > well). I will send a second email discussing this. > >> > >> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and > drfat-li-dynamic-flooding-isis > >> published centralized solution. > >> > >> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and > draft-cc-ospf-flooding-reduction > >> published distributed solution. > >> - mention of centralized solution asserting it is not good choice. > >> > >> - IETF 101 (Mar 2018) > >> - Video: > https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6ZTP5j_HaBNdf= P > bgxGIp22cnaWS > >> - Minutes: > https://datatracker.ietf.org/meeting/101/materials/minutes-101-lsr-00 > >> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > >> - Generally well received. > >> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > >> - Serious problems immediately found during presentation -- not > fully baked. > >> > >> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) > >> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) > >> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised > >> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) > >> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. > >> - Does not specify distributed algorithm only how to indicate one=20 >> in > use, small change. > >> > >> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published > >> > >> - IETF 102 (Jul 14, 2018) > >> - draft-li-dynamic-flooding-05 presented. > >> - draft-cc-ospf-flooding-reduction-02 presented. > >> > >> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) > >> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. > >> > >> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) > >> > >> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) > >> > >> - IETF 103 (Nov 3, 2018) > >> > >> - Chairs give direction > >> > >> - draft-li-lsr-dynamic-flooding-05 having come first, being well > written and not > >> specifying a distributed algorithm (merely allowing for one) is > the correct vehicle > >> to adopt as a base document. > >> > >> - Distributed algorithm work (the original basis for > draft-cc-ospf-flooding-reduction) > >> should continue as a separate document form the base which=20 >> would > thus we have no > >> conflicts. > >> > >> - In the meantime the authors try and merge work, this fails. > >> > >> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) > >> > >> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) > >> > >> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) > > > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > From nobody Wed Feb 13 18:37:45 2019 Return-Path: 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 5219F130EBB; Wed, 13 Feb 2019 18:37:44 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, 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 HvlmW_DQy31Q; Wed, 13 Feb 2019 18:37:40 -0800 (PST) Received: from m88102.mail.qiye.163.com (m88102.mail.qiye.163.com [106.2.88.102]) by ietfa.amsl.com (Postfix) with ESMTP id 41AAF130DE4; Wed, 13 Feb 2019 18:37:39 -0800 (PST) Received: from WangajPC (unknown [219.142.69.77]) by m88102.mail.qiye.163.com (Hmail) with ESMTPA id 26D94425DE; Thu, 14 Feb 2019 10:37:34 +0800 (CST) From: "Aijun Wang" To: "'Christian Hopps'" , Cc: , References: In-Reply-To: Date: Thu, 14 Feb 2019 10:37:34 +0800 Message-ID: <008d01d4c40e$3e66d5a0$bb3480e0$@org.cn> MIME-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AdTB9zWLF0OqcR9IQE6Ejn1LBw6EbQCENWQA Content-Language: zh-cn X-HM-Spam-Status: e1kIGBQJHllBS1VLV1koWUFKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZMjUtOj cyP0FLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6OBw6Gjo6HzlIFDUfITU5Ax4y EhdPCilVSlVKTk5LSkpKQ05MT0pLVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlJSkJVSk9JVU1CVUxMWVdZCAFZQU9KSkw3Bg++ X-HM-Tid: 0a68e9ddcecd9865kuuu26d94425de Archived-At: Subject: [Lsr] =?gb2312?b?tPC4tDogIFdHIEFkb3B0aW9uIENhbGwgZm9yIGRyYWZ0?= =?gb2312?b?LWxpLWxzci1keW5hbWljLWZsb29kaW5nLTAyICsgSVBSIHBvbGwu?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 02:37:44 -0000 Hi, Christian: Supports for the adoption of two drafts at the same time, in which one(draft-li-lsr-dynamic-flooding-02) focuses on the centralized mode = and the other(draft-cc-lsr-flooding-reduction-01) focuses on the distributed mode. The centralized mode for is one straightforward way to realize the = flooding reduction, and I admire Tony Li give his solution first. But from the consideration of solution robustness, the distributed mode may be more promising. My consideration for distributed mode is that it should not cover only = the algorithm, more contents need to be standardized in future. Huaimo has = one good start point for distributed mode, and he also gives abundant = thoughts for the centralized mode that the current version of draft-li-lsr-dynamic-flooding-02 has not covered yet. Proposal for the name of two drafts may be draft-ietf-lsr-flooding-reduction-centralized-mode and draft-ietf-lsr-flooding-reduction-distributed-mode. Best Regards. Aijun Wang Network R&D and Operation Support Department China Telecom Corporation Limited Beijing Research Institute,Beijing, = China. -----=D3=CA=BC=FE=D4=AD=BC=FE----- =B7=A2=BC=FE=C8=CB: Christian Hopps [mailto:chopps@chopps.org]=20 =B7=A2=CB=CD=CA=B1=BC=E4: 2019=C4=EA2=D4=C211=C8=D5 18:45 =CA=D5=BC=FE=C8=CB: lsr@ietf.org =B3=AD=CB=CD: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.org =D6=F7=CC=E2: [Lsr] WG Adoption Call for = draft-li-lsr-dynamic-flooding-02 + IPR poll. Hi Folks, We are starting a 2 week adoption call on = draft-li-lsr-dynamic-flooding-02. The aim of this document is to describe the problem space and = standardize a way to signal dynamic flooding information. It does not standardize any specific algorithm for flooding topology creation. Authors please respond indicating if you are aware of any IPR related to this work. We also have another draft (draft-cc-lsr-flooding-reduction-01) that = started as a distributed flooding topology algorithm and morphed into that plus competing ideas on signaling of flooding topology information. The = intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the = WG can discuss adding any signaling ideas from this work to the adopted signaling draft (with proper attribution given as appropriate), and two, = for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new = document without the signaling portion and instead focus on their flooding = topology algorithm. This new focused document can be considered in parallel along with the other algorithm work that has been proposed. Flooding topology creation is seen as a hard problem for which we don't expect a one-size-fits-all solution. Taking the steps outlined above = will help us move forward on the solutions. Thanks, Chris & Acee. LSR WG Chairs. 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Support

Zhenqiang Li
li_zhenqiang@hotmail.com
 
=B7=A2=BC=FE=C8=CB=A3=BA Dongjie (Jimmy)
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2019-02-11 16:47
=CA=D5=BC=FE=C8=CB=A3=BA Lizhenbin; Christian Hopps; lsr@ietf.org
=D6=F7=CC=E2=A3=BA Re: [Lsr]=B4=F0=B8=B4: Moving Forward [= Re: Flooding Reduction Draft Redux]
Support moving forward with the centralized and distributed solutions = specified in separated drafts. As discussed in previous mails, the procedur= e and protocol extensions needed for the two modes could be different, and = a particular network may only want to use one mode.
 
As for the centralized solution, maybe it could be refined with the ad= vantage of the centralized part in both existing drafts.
 
Best regards,
Jie
 
> -----Original Message-----
> From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of Lizhenbin
> Sent: Monday, February 04, 2019 5:36 PM
> To: Christian Hopps <chopps@chopps.org>; lsr@ietf.org
> Subject: [Lsr] =B4=F0=B8=B4: Moving Forward [Re: Flooding Reducti= on Draft Redux]
>
> Hi Chris & Acee,
>
> > - Jan 2, 2018 Publication: draft-li-dynamic-flooding and
> drfat-li-dynamic-flooding-isis
> >   published centralized solution.
> >
> > - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction = and
> draft-cc-ospf-flooding-reduction
> >   published distributed solution
>
> Thanks for your summary we know the fact that at beginning there = was not any
> confliction between the two drafts.
>
>
> > - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 aut= hors)
> >   - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM= *.
> >   - Does not specify distributed algorithm only ho= w to indicate one in use,
> small change.
>
> I do not think it is a small change. It is to introduced the tota= lly new solution which
> was already defined in the other existing draft. It is not an app= ropariate behavior
> and the root cause of the potential confliction.
>
>
> I also think the distributed solution includes more than the algo= rithms defined in
> the draft-cc-lsr-flooding-reduction-00  and the overlapped s= ignallings  defined
> in the draft-cc-lsr-flooding-reduction-00/draft-li-dynamic-floodi= ng-03. Since the
> co-authors could not merge the draft, though the existing suggest= ion proposed is
> try to separate the two drafts, there is still overlap on the dis= tributed solution
> between the two drafts which may be the source of continuous conf= liction in the
> future. In order to avoid the situation I would like to propose f= ollowing
> suggestions:
> - move both the two drafts forward in parallel keeping draft-li-d= ynamic-flooding
> focus on the centralized solution and draft-cc-lsr-flooding-reduc= tion on the
> distributed solution.
> - draft-li-dynamic-flooding can keep on refining the centralized = solution without
> mentioning distibuted solutions.
> - draft-cc-lsr-flooding-reduction can keep on refining the distri= buted solutions.
> For the sigalling which can be shared by the two modes, the draft= can indicate the
> distributed solutions reuse the signalling defined in draft-li-dy= namic-flooding
> without defining new signalling.
> - both drafts change the draft names to reflect different solutio= ns without
> causing confusion.
>
>
> Thanks & Regards,
> Zhenbin (Robin)
>
>
>
>
>
> ________________________________________
> =B7=A2=BC=FE=C8=CB: Lsr [lsr-bounces@ietf.org] =B4=FA=B1=ED Chris= tian Hopps [chopps@chopps.org]
> =B7=A2=CB=CD=CA=B1=BC=E4: 2019=C4=EA2=D4=C21=C8=D5 20:25
> =CA=D5=BC=FE=C8=CB: lsr@ietf.org
> =B3=AD=CB=CD: chopps@chopps.org
> =D6=F7=CC=E2: [Lsr] Moving Forward [Re: Flooding Reduction Draft = Redux]
>
> Summary of where we are at with dynamic flooding reduction:
>
>  - We have a well written original work that came first and = described the
> problems as well as a TLVs to allow for a centralized solution
> (draft-li-dyanmic-flooding). We do not need to standardize the ce= ntralized
> algorithm.
>
>  - A small change to this work allowed for distributed algor= ithms and for outside
> work on distributed algorithms to continue in parallel.
>
>  - We have another original work that started primarily as a= distributed algorithm
>    (draft-cc-ospf-flooding-reduction)
>
>  - Finally we also have:
>    - Cross-pollination of ideas.
>    - Failed attempts at merging.
>    - An authors list "Arms-Race".
>
> Moving forward:
>
> - During IETF 103 I proposed we have no conflict if we:
>
>    1) adopt draft-li-lsr-dyanmic-flooding as the b= ase WG document.
>    2) have authors of draft-cc-lsr-flooding-reduct= ion work on a distributed
> algorithm as they started with.
>
> - Acee agreed during the meeting (as chair) that this was the bes= t way forward.
> We had some agreement form the floor as well.
>
> - Any good ideas regarding the distribution of a centralized topo= logy can be
> debated and added (with appropriate attribution) to the base docu= ment after
> we adopt one.
>
> - This is what happens when we adopt a document as WG work, we wo= rk on it.
>
> - The original authors of the distributed solution can continue t= o work on their
> distributed algorithm in a separate document which would also nee= d
> standardization.
>
> Does anyone see a serious problem with this path forward?
>
> Thanks,
> Chris & Acee.
> LSR Chairs.
>
> Christian Hopps <chopps@chopps.org> writes:
>
> > We've had the authors of the individual conflicting drafts t= ake a shot at merging
> their work.
> >
> >    This has failed.
> >
> > Here is the full history (which I also summarized during IET= F103 as well). I will
> send a second email discussing this.
> >
> > - Jan 2, 2018 Publication: draft-li-dynamic-flooding and
> drfat-li-dynamic-flooding-isis
> >   published centralized solution.
> >
> > - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction = and
> draft-cc-ospf-flooding-reduction
> >   published distributed solution.
> >   - mention of centralized solution asserting it i= s not good choice.
> >
> > - IETF 101 (Mar 2018)
> >   - Video:
> https://www.youtube.com/watch?v=3DqHmT4ytMn4w&list=3DPLC86T-6= ZTP5j_HaBN
> dfPbgxGIp22cnaWS
> >   - Minutes:
> https://datatracker.ietf.org/meeting/101/materials/minutes-101-ls= r-00
> >   - draft-li-dynamic-flooding-02 presented (1 auth= or). at IETF 101
> >     - Generally well received.
> >   - draft-cc-ospf-flooding-reduction-00 (4 authors= ) presented.
> >     - Serious problems immediately found= during presentation -- not fully
> baked.
> >
> > - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 aut= hor)
> > - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 aut= hor)
> > - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised
> > - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 aut= hors)
> >   - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM= *.
> >   - Does not specify distributed algorithm only ho= w to indicate one in use,
> small change.
> >
> > - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published<= /div>
> >
> > - IETF 102 (Jul 14, 2018)
> >   - draft-li-dynamic-flooding-05 presented.
> >   - draft-cc-ospf-flooding-reduction-02 presented.=
> >
> > - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 author= s)
> >   - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*.<= /div>
> >
> > - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 author= s)
> >
> > - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 a= uthors)
> >
> > - IETF 103 (Nov 3, 2018)
> >
> >   - Chairs give direction
> >
> >     - draft-li-lsr-dynamic-flooding-05 h= aving come first, being well written and
> not
> >       specifying a distributed= algorithm (merely allowing for one) is the
> correct vehicle
> >       to adopt as a base docum= ent.
> >
> >     - Distributed algorithm work (the or= iginal basis for
> draft-cc-ospf-flooding-reduction)
> >       should continue as a sep= arate document form the base which would
> thus we have no
> >       conflicts.
> >
> > - In the meantime the authors try and merge work, this fails= .
> >
> > - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors)
> >
> > - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors= )
> >
> > - Jan 7, 2019  draft-cc-lsr-flooding-reduction-01 (8 au= thors)
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr
_______________________________________________
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--_000_TYAPR06MB2319A1D386E92A0E97456F1CFC670TYAPR06MB2319apcp_-- From nobody Wed Feb 13 22:20:56 2019 Return-Path: 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 2C320130FEC; Wed, 13 Feb 2019 22:20:54 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 vHf-L3wXUBoK; Wed, 13 Feb 2019 22:20:52 -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 65DDC130FDC; Wed, 13 Feb 2019 22:20:52 -0800 (PST) Received: from lhreml702-cah.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id 824BABF3DDBCC4758AA6; 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DGGEMM403-HUB.china.huawei.com ([10.3.20.211]) with mapi id 14.03.0415.000; Thu, 14 Feb 2019 14:56:21 +0800 From: Huzhibo To: Aijun Wang , 'Christian Hopps' , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: =?gb2312?B?W0xzcl0gtPC4tDogIFdHIEFkb3B0aW9uIENhbGwgZm9yIGRyYWZ0LWxpLWxz?= =?gb2312?Q?r-dynamic-flooding-02_+_IPR_poll.?= Thread-Index: AQHUxA5VdReDUZ5M7kGWjOVPvPp076Xe1snw Date: Thu, 14 Feb 2019 06:56:20 +0000 Message-ID: <06CF729DA0D6854E8C1E5121AC3330DFADDD320C@dggemm509-mbx.china.huawei.com> References: <008d01d4c40e$3e66d5a0$bb3480e0$@org.cn> In-Reply-To: <008d01d4c40e$3e66d5a0$bb3480e0$@org.cn> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.219.232] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] =?gb2312?b?tPC4tDogIFdHIEFkb3B0aW9uIENhbGwgZm9yIGRyYWZ0?= 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IEFjZWUuDQpMU1IgV0cgQ2hhaXJzLg0KDQpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXw0KTHNyIG1haWxpbmcgbGlzdA0KTHNyQGlldGYub3JnDQpodHRwczov L3d3dy5pZXRmLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xzcg0K From nobody Wed Feb 13 23:10:29 2019 Return-Path: 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 4102F131021; Wed, 13 Feb 2019 23:10:27 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 q4p7bjrOUU4F; Wed, 13 Feb 2019 23:10:25 -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 EDD5612D7F8; Wed, 13 Feb 2019 23:10:24 -0800 (PST) Received: from lhreml702-cah.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id 1F7359E172C3E7113E6D; Thu, 14 Feb 2019 07:10:22 +0000 (GMT) Received: from NKGEML411-HUB.china.huawei.com (10.98.56.70) by lhreml702-cah.china.huawei.com (10.201.108.43) with Microsoft SMTP Server (TLS) id 14.3.408.0; Thu, 14 Feb 2019 07:10:21 +0000 Received: from NKGEML515-MBX.china.huawei.com ([fe80::a54a:89d2:c471:ff]) by nkgeml411-hub.china.huawei.com ([10.98.56.70]) with mapi id 14.03.0415.000; Thu, 14 Feb 2019 15:10:16 +0800 From: "Dongjie (Jimmy)" To: Aijun Wang , 'Christian Hopps' , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: =?gb2312?B?W0xzcl0gtPC4tDogIFdHIEFkb3B0aW9uIENhbGwgZm9yIGRyYWZ0LWxpLWxz?= =?gb2312?Q?r-dynamic-flooding-02_+_IPR_poll.?= Thread-Index: AQHUxA5WfU1he8O0kUSfefaEU/6dGaXe1giA Date: Thu, 14 Feb 2019 07:10:15 +0000 Message-ID: <76CD132C3ADEF848BD84D028D243C927C33B21D3@NKGEML515-MBX.china.huawei.com> References: <008d01d4c40e$3e66d5a0$bb3480e0$@org.cn> In-Reply-To: <008d01d4c40e$3e66d5a0$bb3480e0$@org.cn> Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.34.228.214] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: [Lsr] =?gb2312?b?tPC4tDogILTwuLQ6ICBXRyBBZG9wdGlvbiBDYWxsIGZv?= =?gb2312?b?ciBkcmFmdC1saS1sc3ItZHluYW1pYy1mbG9vZGluZy0wMiArIElQUiBwb2xs?= =?gb2312?b?Lg==?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 07:10:28 -0000 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required=5 tests=[BAYES_00=-1.9, 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 xKQRE2eDm6b4; Wed, 13 Feb 2019 23:23:37 -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 44803129A87; Wed, 13 Feb 2019 23:23:37 -0800 (PST) Received: from lhreml707-cah.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id DFCAEDF284EDCC21D5D0; Thu, 14 Feb 2019 07:23:34 +0000 (GMT) Received: from lhreml709-chm.china.huawei.com (10.201.108.58) by lhreml707-cah.china.huawei.com (10.201.108.48) with Microsoft SMTP Server (TLS) id 14.3.408.0; Thu, 14 Feb 2019 07:23:34 +0000 Received: from lhreml709-chm.china.huawei.com (10.201.108.58) by lhreml709-chm.china.huawei.com (10.201.108.58) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Thu, 14 Feb 2019 07:23:34 +0000 Received: from NKGEML413-HUB.china.huawei.com (10.98.56.74) by lhreml709-chm.china.huawei.com (10.201.108.58) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA_P256) id 15.1.1591.10 via Frontend Transport; Thu, 14 Feb 2019 07:23:33 +0000 Received: from NKGEML514-MBX.china.huawei.com ([fe80::40a8:f0d:c0f3:2ca5]) by NKGEML413-HUB.china.huawei.com ([10.98.56.74]) with mapi id 14.03.0415.000; Thu, 14 Feb 2019 15:23:22 +0800 From: Yangang To: Lizhenbin , 'Christian Hopps' , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: =?gb2312?B?W0xzcl0gtPC4tDogIFdHIEFkb3B0aW9uIENhbGwgZm9yIGRyYWZ0LWxpLWxz?= =?gb2312?Q?r-dynamic-flooding-02_+_IPR_poll.?= Thread-Index: AQHUxA5S4AQNGBKaak6ggB9U9fZeYKXeTJaAgACXNQA= Date: Thu, 14 Feb 2019 07:23:22 +0000 Message-ID: References: <008d01d4c40e$3e66d5a0$bb3480e0$@org.cn> <5A5B4DE12C0DAC44AF501CD9A2B01A8D8F54350E@DGGEMM532-MBX.china.huawei.com> In-Reply-To: <5A5B4DE12C0DAC44AF501CD9A2B01A8D8F54350E@DGGEMM532-MBX.china.huawei.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.219.25] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] =?gb2312?b?tPC4tDogIFdHIEFkb3B0aW9uIENhbGwgZm9yIGRyYWZ0?= =?gb2312?b?LWxpLWxzci1keW5hbWljLWZsb29kaW5nLTAyICsgSVBSIHBvbGwu?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 07:23:40 -0000 U3VwcG9ydCB0aGUgYWRvcHRpb24gb24gdGhlc2UgdHdvIGRyYWZ0cy4NCg0KWWFuZ2FuZw0KDQot 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X19fX19fX19fX19fX19fX18NCkxzciBtYWlsaW5nIGxpc3QNCkxzckBpZXRmLm9yZw0KaHR0cHM6 Ly93d3cuaWV0Zi5vcmcvbWFpbG1hbi9saXN0aW5mby9sc3INCg== From nobody Wed Feb 13 23:30:01 2019 Return-Path: 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 E29DE13102B for ; Wed, 13 Feb 2019 23:29:59 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 ssMr1LZAFIdu for ; Wed, 13 Feb 2019 23:29:56 -0800 (PST) Received: from aer-iport-2.cisco.com (aer-iport-2.cisco.com [173.38.203.52]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0C256131021 for ; Wed, 13 Feb 2019 23:29:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=10371; q=dns/txt; s=iport; t=1550129397; x=1551338997; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=8EGLCIs6xlzzA5hGbuaHIx49hUr3IqCZdNbobyPTdxM=; b=kBVrX2cael8hS7XvkJ4oPcNiRDrhYkfqk3I+19yN4Pdipq3lSbEsOPXL 3wDZ6qwHI+c3iSjuA52KoEvgXAxpfQZ+qN/0ksi4M4c5uR/k/eZBiR3nS m2JuPwMBsysEfMM0ApRlHqLR+iRrPCe7VrPgt5cQVABTYBm0cY9+7uw00 Y=; X-IronPort-AV: E=Sophos;i="5.58,367,1544486400"; d="scan'208";a="10081693" Received: from aer-iport-nat.cisco.com (HELO aer-core-3.cisco.com) ([173.38.203.22]) by aer-iport-2.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Feb 2019 07:29:55 +0000 Received: from [10.61.175.23] ([10.61.175.23]) by aer-core-3.cisco.com (8.15.2/8.15.2) with ESMTP id x1E7Tr5n002650; Thu, 14 Feb 2019 07:29:53 GMT To: Huaimo Chen , "Acee Lindem (acee)" , Christian Hopps , "lsr@ietf.org" References: <5316A0AB3C851246A7CA5758973207D463B3B9D8@sjceml521-mbx.china.huawei.com> <8378287F-27B9-4663-A22B-F8A2EC6C9FC3@cisco.com> <5316A0AB3C851246A7CA5758973207D463B46315@sjceml521-mbx.china.huawei.com> <5316A0AB3C851246A7CA5758973207D463B4A6AB@sjceml521-mbx.china.huawei.com> From: Peter Psenak Message-ID: <25021deb-2032-9fcc-4bf4-fcaaa21598b9@cisco.com> Date: Thu, 14 Feb 2019 08:29:53 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <5316A0AB3C851246A7CA5758973207D463B4A6AB@sjceml521-mbx.china.huawei.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.61.175.23, [10.61.175.23] X-Outbound-Node: aer-core-3.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 07:30:00 -0000 Hi Huaimo, On 13/02/2019 22:50 , Huaimo Chen wrote: > Hi Peter, > > My explanations/answers are in line below with prefix [HC]. > > -----Original Message----- > From: Peter Psenak [mailto:ppsenak@cisco.com] > Sent: Wednesday, February 6, 2019 4:58 AM > To: Huaimo Chen ; Acee Lindem (acee) ; Christian Hopps ; lsr@ietf.org > Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] > > Hi Huaimo, > > On 03/02/2019 17:58 , Huaimo Chen wrote: >> Hi Acee, >> >> >> >> I agree with you on keeping the signaling for two modes. The other >> parts for the distributed solution need to be removed. optimized flooding is not only about algorithm to calculate the flooding topology and the way it is distributed/computed. It is also about local rules to make sure the flooding remains consistent. These are _independent_ of centralized/distributed modes. And it make no sense to specify these rules in two drafts. > > There are no "other" parts specific for the distributed solution. > > [HC] Some behaviors for the distributed solution/mode are described in draft-li-dynamic-flooding. For example, there are a few of places from page 27 to 30, which define the behaviors specific for the distributed solution/mode. I strongly disagree. The fact that we say in centralized mode area leader recomputes and in distributed mode all nodes recompute make no difference in behavior. thanks, Peter > > draft-li-dyanmic-flooding defines: > > 1. the signalling that is common and used by both modes 2. distribution of the flooding-topology, which is specific to centralized mode 3. common behavior of the nodes that support the extension, which is independent of the mode of operation. > > [HC] In addition to these, draft-cc-lsr-flooding-reduction defines more, including concrete protections, operations, and algorithms for computing a flooding topology. > > Best Regards, > Huaimo > > thanks, > Peter > > >> >> >> >> Best Regards, >> >> Huaimo >> >> *From:* Acee Lindem (acee) [mailto:acee@cisco.com] >> *Sent:* Sunday, February 3, 2019 11:45 AM >> *To:* Huaimo Chen ; Christian Hopps >> ; lsr@ietf.org >> *Subject:* Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft >> Redux] >> >> >> >> Hi Huaimo, >> >> >> >> See inline. >> >> >> >> *From: *Lsr > on >> behalf of Huaimo Chen > > >> *Date: *Saturday, February 2, 2019 at 12:27 AM >> *To: *Christian Hopps >, >> "lsr@ietf.org " > > >> *Subject: *Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft >> Redux] >> >> >> >> Hi Everyone, >> >> >> >> We proposed the distributed solution first, and Tony proposed the >> centralized solution first. Tony added the distributed solution >> (except for the algorithms to compute flooding topology) into his >> draft. And then we added the centralized solution into our draft. The >> latest versions of the two drafts have largely converged at least at >> the high level to a solution for solving the same problem. >> >> >> >> Our draft has multiple key technical advantages over Tony's draft as >> we described in our email to the LSR list, which are summarized below: >> >> 1. It uses a fraction of flooding resource (i.e., it is multiple >> times more efficient in flooding topology encoding); >> >> 2. It provides fault tolerance to multiple failures, minimizing >> impact on network convergence, thus minimizing traffic lose; and >> >> 3. It is simpler and needs less processing time (i.e., faster and >> more efficient) in multiple scenarios. >> >> Based on the technical merits, our draft should be moved forward. >> However, Chair proposed to move Tony's draft forward and have us work >> on a distributed algorithm as we started with. >> >> >> >> I think that the distributed solution in Tony's draft needs to be >> removed and they work on the centralized solution. We remove the >> centralized solution from our draft and work on the distributed solution. >> >> >> >> I'm against "cutting the baby in half" given that the signaling for >> the distributed solution is a proper subset of what is required for >> the centralized solution. It is undesirable to have different >> signaling for the two modes. For the distributed algorithm you are >> proposing, do see problems with the signaling? >> >> >> >> Thanks, >> >> Acee >> >> >> >> Best Regards, >> >> Huaimo >> >> >> >> -----Original Message----- >> >> From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of Christian Hopps >> >> Sent: Friday, February 1, 2019 7:26 AM >> >> To: lsr@ietf.org >> >> Cc: chopps@chopps.org >> >> Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] >> >> >> >> >> >> Summary of where we are at with dynamic flooding reduction: >> >> >> >> - We have a well written original work that came first and described >> the problems as well as a TLVs to allow for a centralized solution >> (draft-li-dyanmic-flooding). We do not need to standardize the >> centralized algorithm. >> >> >> >> - A small change to this work allowed for distributed algorithms and >> for outside work on distributed algorithms to continue in parallel. >> >> >> >> - We have another original work that started primarily as a >> distributed algorithm >> >> (draft-cc-ospf-flooding-reduction) >> >> >> >> - Finally we also have: >> >> - Cross-pollination of ideas. >> >> - Failed attempts at merging. >> >> - An authors list "Arms-Race". >> >> >> >> Moving forward: >> >> >> >> - During IETF 103 I proposed we have no conflict if we: >> >> >> >> 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. >> >> 2) have authors of draft-cc-lsr-flooding-reduction work on a >> distributed algorithm as they started with. >> >> >> >> - Acee agreed during the meeting (as chair) that this was the best way >> forward. We had some agreement form the floor as well.. >> >> >> >> - Any good ideas regarding the distribution of a centralized topology >> can be debated and added (with appropriate attribution) to the base >> document after we adopt one. >> >> >> >> - This is what happens when we adopt a document as WG work, we work on it. >> >> >> >> - The original authors of the distributed solution can continue to >> work on their distributed algorithm in a separate document which would >> also need standardization. >> >> >> >> Does anyone see a serious problem with this path forward? >> >> >> >> Thanks, >> >> Chris & Acee. >> >> LSR Chairs. >> >> >> >> Christian Hopps > writes: >> >> >> >>> We've had the authors of the individual conflicting drafts take a >>> shot >> at merging their work. >> >>> >> >>> This has failed. >> >>> >> >>> Here is the full history (which I also summarized during IETF103 as >> well). I will send a second email discussing this. >> >>> >> >>> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and >> drfat-li-dynamic-flooding-isis >> >>> published centralized solution. >> >>> >> >>> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and >> draft-cc-ospf-flooding-reduction >> >>> published distributed solution. >> >>> - mention of centralized solution asserting it is not good choice. >> >>> >> >>> - IETF 101 (Mar 2018) >> >>> - Video: >> https://www.youtube.com/watch?v=qHmT4ytMn4w&list=PLC86T-6ZTP5j_HaBNdfP >> bgxGIp22cnaWS >> >>> - Minutes: >> https://datatracker.ietf.org/meeting/101/materials/minutes-101-lsr-00 >> >>> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 >> >>> - Generally well received. >> >>> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. >> >>> - Serious problems immediately found during presentation -- not >> fully baked. >> >>> >> >>> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) >> >>> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) >> >>> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised >> >>> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) >> >>> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. >> >>> - Does not specify distributed algorithm only how to indicate one >>> in >> use, small change. >> >>> >> >>> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published >> >>> >> >>> - IETF 102 (Jul 14, 2018) >> >>> - draft-li-dynamic-flooding-05 presented. >> >>> - draft-cc-ospf-flooding-reduction-02 presented. >> >>> >> >>> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) >> >>> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. >> >>> >> >>> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) >> >>> >> >>> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) >> >>> >> >>> - IETF 103 (Nov 3, 2018) >> >>> >> >>> - Chairs give direction >> >>> >> >>> - draft-li-lsr-dynamic-flooding-05 having come first, being well >> written and not >> >>> specifying a distributed algorithm (merely allowing for one) is >> the correct vehicle >> >>> to adopt as a base document. >> >>> >> >>> - Distributed algorithm work (the original basis for >> draft-cc-ospf-flooding-reduction) >> >>> should continue as a separate document form the base which >>> would >> thus we have no >> >>> conflicts. >> >>> >> >>> - In the meantime the authors try and merge work, this fails. >> >>> >> >>> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) >> >>> >> >>> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) >> >>> >> >>> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) >> >> >> >> >> >> _______________________________________________ >> Lsr mailing list >> Lsr@ietf.org >> https://www.ietf.org/mailman/listinfo/lsr >> > > . > From nobody Thu Feb 14 05:57:52 2019 Return-Path: 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 AF265130E6C for ; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: juniper.net X-MS-Exchange-CrossTenant-Network-Message-Id: 11849046-3a50-4db8-1094-08d6928460f6 X-MS-Exchange-CrossTenant-originalarrivaltime: 14 Feb 2019 13:57:37.7869 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: bea78b3c-4cdb-4130-854a-1d193232e5f4 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR05MB4870 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-02-14_07:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902140098 Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 13:57:51 -0000 Hi, I completely agree with Peter. Yours Irrespectively, John > -----Original Message----- > From: Lsr On Behalf Of Peter Psenak > Sent: Thursday, February 14, 2019 2:30 AM > To: Huaimo Chen ; Acee Lindem (acee) > ; Christian Hopps ; lsr@ietf.org > Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] >=20 > Hi Huaimo, >=20 > On 13/02/2019 22:50 , Huaimo Chen wrote: > > Hi Peter, > > > > My explanations/answers are in line below with prefix [HC]. > > > > -----Original Message----- > > From: Peter Psenak [mailto:ppsenak@cisco.com] > > Sent: Wednesday, February 6, 2019 4:58 AM > > To: Huaimo Chen ; Acee Lindem (acee) > > ; Christian Hopps ; lsr@ietf.org > > Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] > > > > Hi Huaimo, > > > > On 03/02/2019 17:58 , Huaimo Chen wrote: > >> Hi Acee, > >> > >> > >> > >> I agree with you on keeping the signaling for two modes. The > >> other parts for the distributed solution need to be removed. >=20 > optimized flooding is not only about algorithm to calculate the flooding > topology and the way it is distributed/computed. It is also about local r= ules to > make sure the flooding remains consistent. These are _independent_ of > centralized/distributed modes. And it make no sense to specify these rule= s in > two drafts. > > > > There are no "other" parts specific for the distributed solution. > > > > [HC] Some behaviors for the distributed solution/mode are described in = draft- > li-dynamic-flooding. For example, there are a few of places from page 27 = to 30, > which define the behaviors specific for the distributed solution/mode. >=20 > I strongly disagree. The fact that we say in centralized mode area leader > recomputes and in distributed mode all nodes recompute make no difference= in > behavior. >=20 > thanks, > Peter >=20 > > > > draft-li-dyanmic-flooding defines: > > > > 1. the signalling that is common and used by both modes 2. distribution= of the > flooding-topology, which is specific to centralized mode 3. common behavi= or of > the nodes that support the extension, which is independent of the mode of > operation. > > > > [HC] In addition to these, draft-cc-lsr-flooding-reduction defines more= , > including concrete protections, operations, and algorithms for computing = a > flooding topology. > > > > Best Regards, > > Huaimo > > > > thanks, > > Peter > > > > > >> > >> > >> > >> Best Regards, > >> > >> Huaimo > >> > >> *From:* Acee Lindem (acee) [mailto:acee@cisco.com] > >> *Sent:* Sunday, February 3, 2019 11:45 AM > >> *To:* Huaimo Chen ; Christian Hopps > >> ; lsr@ietf.org > >> *Subject:* Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft > >> Redux] > >> > >> > >> > >> Hi Huaimo, > >> > >> > >> > >> See inline. > >> > >> > >> > >> *From: *Lsr > on > >> behalf of Huaimo Chen >> > > >> *Date: *Saturday, February 2, 2019 at 12:27 AM > >> *To: *Christian Hopps >, > >> "lsr@ietf.org " >> > > >> *Subject: *Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft > >> Redux] > >> > >> > >> > >> Hi Everyone, > >> > >> > >> > >> We proposed the distributed solution first, and Tony proposed the > >> centralized solution first. Tony added the distributed solution > >> (except for the algorithms to compute flooding topology) into his > >> draft. And then we added the centralized solution into our draft. The > >> latest versions of the two drafts have largely converged at least at > >> the high level to a solution for solving the same problem. > >> > >> > >> > >> Our draft has multiple key technical advantages over Tony's draft as > >> we described in our email to the LSR list, which are summarized below: > >> > >> 1. It uses a fraction of flooding resource (i.e., it is multiple > >> times more efficient in flooding topology encoding); > >> > >> 2. It provides fault tolerance to multiple failures, minimizing > >> impact on network convergence, thus minimizing traffic lose; and > >> > >> 3. It is simpler and needs less processing time (i.e., faster an= d > >> more efficient) in multiple scenarios. > >> > >> Based on the technical merits, our draft should be moved forward. > >> However, Chair proposed to move Tony's draft forward and have us work > >> on a distributed algorithm as we started with. > >> > >> > >> > >> I think that the distributed solution in Tony's draft needs to be > >> removed and they work on the centralized solution. We remove the > >> centralized solution from our draft and work on the distributed soluti= on. > >> > >> > >> > >> I'm against "cutting the baby in half" given that the signaling for > >> the distributed solution is a proper subset of what is required for > >> the centralized solution. It is undesirable to have different > >> signaling for the two modes. For the distributed algorithm you are > >> proposing, do see problems with the signaling? > >> > >> > >> > >> Thanks, > >> > >> Acee > >> > >> > >> > >> Best Regards, > >> > >> Huaimo > >> > >> > >> > >> -----Original Message----- > >> > >> From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of Christian Hopps > >> > >> Sent: Friday, February 1, 2019 7:26 AM > >> > >> To: lsr@ietf.org > >> > >> Cc: chopps@chopps.org > >> > >> Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] > >> > >> > >> > >> > >> > >> Summary of where we are at with dynamic flooding reduction: > >> > >> > >> > >> - We have a well written original work that came first and described > >> the problems as well as a TLVs to allow for a centralized solution > >> (draft-li-dyanmic-flooding). We do not need to standardize the > >> centralized algorithm. > >> > >> > >> > >> - A small change to this work allowed for distributed algorithms and > >> for outside work on distributed algorithms to continue in parallel. > >> > >> > >> > >> - We have another original work that started primarily as a > >> distributed algorithm > >> > >> (draft-cc-ospf-flooding-reduction) > >> > >> > >> > >> - Finally we also have: > >> > >> - Cross-pollination of ideas. > >> > >> - Failed attempts at merging. > >> > >> - An authors list "Arms-Race". > >> > >> > >> > >> Moving forward: > >> > >> > >> > >> - During IETF 103 I proposed we have no conflict if we: > >> > >> > >> > >> 1) adopt draft-li-lsr-dyanmic-flooding as the base WG document. > >> > >> 2) have authors of draft-cc-lsr-flooding-reduction work on a > >> distributed algorithm as they started with. > >> > >> > >> > >> - Acee agreed during the meeting (as chair) that this was the best > >> way forward. We had some agreement form the floor as well.. > >> > >> > >> > >> - Any good ideas regarding the distribution of a centralized topology > >> can be debated and added (with appropriate attribution) to the base > >> document after we adopt one. > >> > >> > >> > >> - This is what happens when we adopt a document as WG work, we work on > it. > >> > >> > >> > >> - The original authors of the distributed solution can continue to > >> work on their distributed algorithm in a separate document which > >> would also need standardization. > >> > >> > >> > >> Does anyone see a serious problem with this path forward? > >> > >> > >> > >> Thanks, > >> > >> Chris & Acee. > >> > >> LSR Chairs. > >> > >> > >> > >> Christian Hopps > writes: > >> > >> > >> > >>> We've had the authors of the individual conflicting drafts take a > >>> shot > >> at merging their work. > >> > >>> > >> > >>> This has failed. > >> > >>> > >> > >>> Here is the full history (which I also summarized during IETF103 as > >> well). I will send a second email discussing this. > >> > >>> > >> > >>> - Jan 2, 2018 Publication: draft-li-dynamic-flooding and > >> drfat-li-dynamic-flooding-isis > >> > >>> published centralized solution. > >> > >>> > >> > >>> - Mar 5, 2018 Publication: draft-cc-isis-flooding-reduction and > >> draft-cc-ospf-flooding-reduction > >> > >>> published distributed solution. > >> > >>> - mention of centralized solution asserting it is not good choice. > >> > >>> > >> > >>> - IETF 101 (Mar 2018) > >> > >>> - Video: > >> https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.youtube.com= _ > >> watch-3Fv-3DqHmT4ytMn4w-26list-3DPLC86T-2D6ZTP5j- > 5FHaBNdfP&d=3DDwICAg&c > >> =3DHAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=3DCRB2tJiQePk0cT- > h5LGhEW > >> H- > s_xXXup3HzvBSMRj5VE&m=3DkykK2jUejhafPHOrWXu0yvNk7XsXUoDYsWjFoFGHeT > g&s > >> =3DcBWxI4Hu1GZNWxuUZRREnZNg-cZZYbdrLHRXKsUama4&e=3D > >> bgxGIp22cnaWS > >> > >>> - Minutes: > >> https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__datatracker.iet= f > >> .org_meeting_101_materials_minutes-2D101-2Dlsr- > 2D00&d=3DDwICAg&c=3DHAkYuh > >> 63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=3DCRB2tJiQePk0cT-h5LGhEWH- > s_xXX > >> > up3HzvBSMRj5VE&m=3DkykK2jUejhafPHOrWXu0yvNk7XsXUoDYsWjFoFGHeTg&s=3D > 1UTDcj > >> zO1b-Ful7k87ItzHcvqzRveIK_m_FI9eIDLFs&e=3D > >> > >>> - draft-li-dynamic-flooding-02 presented (1 author). at IETF 101 > >> > >>> - Generally well received. > >> > >>> - draft-cc-ospf-flooding-reduction-00 (4 authors) presented. > >> > >>> - Serious problems immediately found during presentation -- not > >> fully baked. > >> > >>> > >> > >>> - Mar 18, 2018 draft-li-dynamic-flooding-03 published (1 author) > >> > >>> - Mar 27, 2018 draft-li-dynamic-flooding-04 published (1 author) > >> > >>> - Apr 20, 2018 draft-cc-ospf-flooding-reduction-01 revised > >> > >>> - Jun 28, 2018 draft-li-dynamic-flooding-05 published (2 authors) > >> > >>> - *SMALL CHANGE TO SUPPORT DISTRIBUTED ALGORITHM*. > >> > >>> - Does not specify distributed algorithm only how to indicate one > >>> in > >> use, small change. > >> > >>> > >> > >>> - Jul 2, 2018 draft-cc-ospf-flooding-reduction-02 published > >> > >>> > >> > >>> - IETF 102 (Jul 14, 2018) > >> > >>> - draft-li-dynamic-flooding-05 presented. > >> > >>> - draft-cc-ospf-flooding-reduction-02 presented. > >> > >>> > >> > >>> - Sep 12, 2018 draft-cc-ospf-flooding-reduction-03 (4 authors) > >> > >>> - *LARGE CHANGE ADDS NEW CENTRALIZED SOLUTION*. > >> > >>> > >> > >>> - Sep 20, 2018 draft-cc-ospf-flooding-reduction-04 (4 authors) > >> > >>> > >> > >>> - Oct 21, 2018 draft-li-lsr-dynamic-flooding-00 and -01 (5 authors) > >> > >>> > >> > >>> - IETF 103 (Nov 3, 2018) > >> > >>> > >> > >>> - Chairs give direction > >> > >>> > >> > >>> - draft-li-lsr-dynamic-flooding-05 having come first, being well > >> written and not > >> > >>> specifying a distributed algorithm (merely allowing for one) > >>> is > >> the correct vehicle > >> > >>> to adopt as a base document. > >> > >>> > >> > >>> - Distributed algorithm work (the original basis for > >> draft-cc-ospf-flooding-reduction) > >> > >>> should continue as a separate document form the base which > >>> would > >> thus we have no > >> > >>> conflicts. > >> > >>> > >> > >>> - In the meantime the authors try and merge work, this fails. > >> > >>> > >> > >>> - Dec 3, 2018 draft-li-lsr-dynamic-flooding-02 (7 authors) > >> > >>> > >> > >>> - Dec 10, 2018 draft-cc-lsr-flooding-reduction-00 (4 authors) > >> > >>> > >> > >>> - Jan 7, 2019 draft-cc-lsr-flooding-reduction-01 (8 authors) > >> > >> > >> > >> > >> > >> _______________________________________________ > >> Lsr mailing list > >> Lsr@ietf.org > >> https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.org_ma= i > >> lman_listinfo_lsr&d=3DDwICAg&c=3DHAkYuh63rsuhr6Scbfh0UjBXeMK- > ndb3voDTXcWz > >> oCI&r=3DCRB2tJiQePk0cT-h5LGhEWH- > s_xXXup3HzvBSMRj5VE&m=3DkykK2jUejhafPHOrW > >> > Xu0yvNk7XsXUoDYsWjFoFGHeTg&s=3DBTZ1l1KpTxr_U3n0pZnknvuPBGxRM9ul08q > CKpaE > >> eXk&e=3D > >> > > > > . > > >=20 > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://urldefense.proofpoint.com/v2/url?u=3Dhttps- > 3A__www.ietf.org_mailman_listinfo_lsr&d=3DDwICAg&c=3DHAkYuh63rsuhr6Scbfh0 > UjBXeMK-ndb3voDTXcWzoCI&r=3DCRB2tJiQePk0cT-h5LGhEWH- > s_xXXup3HzvBSMRj5VE&m=3DkykK2jUejhafPHOrWXu0yvNk7XsXUoDYsWjFoFGHeT > g&s=3DBTZ1l1KpTxr_U3n0pZnknvuPBGxRM9ul08qCKpaEeXk&e=3D From nobody Thu Feb 14 07:56:40 2019 Return-Path: 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 8179F131096; Thu, 14 Feb 2019 07:56:38 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, 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 hPK-dIKSpuBS; Thu, 14 Feb 2019 07:56:36 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id 7D74A131069; Thu, 14 Feb 2019 07:56:36 -0800 (PST) Received: from tops.chopps.org (047-050-069-038.biz.spectrum.com [47.50.69.38]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPS id A360A604D2; Thu, 14 Feb 2019 10:56:35 -0500 (EST) References: <008d01d4c40e$3e66d5a0$bb3480e0$@org.cn> User-agent: mu4e 1.1.0; emacs 26.1 From: Christian Hopps To: lsr@ietf.org Cc: 'Christian Hopps' , lsr-chairs@ietf.org, lsr-ads@ietf.org, Aijun Wang Date: Thu, 14 Feb 2019 10:56:03 -0500 Message-ID: In-reply-to: <008d01d4c40e$3e66d5a0$bb3480e0$@org.cn> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Archived-At: Subject: Re: [Lsr] =?utf-8?b?562U5aSNOiAgV0cgQWRvcHRpb24gQ2FsbCBmb3IgZHJhZnQt?= =?utf-8?q?li-lsr-dynamic-flooding-02_+_IPR_poll=2E?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 15:56:39 -0000 --=-=-= Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Hi folks, It's not useful for people to be adding a bunch of extra qualifications and= caveats to the adoption poll. This is not a dual adoption poll. We are not calling for adoption of an unw= ritten, unfinished algorithm document. That makes no sense; we adopt review= ed acceptable work, not the promise of it. We're also not going to hold up = standardizing the signaling work waiting on unfinished algorithm work, that= 's literally the opposite of the goal here which is to un-tie these two thi= ngs so we can make progress on both in parallel. Thanks, Chris. Aijun Wang writes: > Hi, Christian: > > Supports for the adoption of two drafts at the same time, in which > one(draft-li-lsr-dynamic-flooding-02) focuses on the centralized mode and > the other(draft-cc-lsr-flooding-reduction-01) focuses on the distributed > mode. > > The centralized mode for is one straightforward way to realize the floodi= ng > reduction, and I admire Tony Li give his solution first. But from the > consideration of solution robustness, the distributed mode may be more > promising. > My consideration for distributed mode is that it should not cover only the > algorithm, more contents need to be standardized in future. Huaimo has one > good start point for distributed mode, and he also gives abundant thoughts > for the centralized mode that the current version of > draft-li-lsr-dynamic-flooding-02 has not covered yet. > > Proposal for the name of two drafts may be > draft-ietf-lsr-flooding-reduction-centralized-mode and > draft-ietf-lsr-flooding-reduction-distributed-mode. > > > Best Regards. > > Aijun Wang > Network R&D and Operation Support Department > China Telecom Corporation Limited Beijing Research Institute,Beijing, Chi= na. > > -----=E9=82=AE=E4=BB=B6=E5=8E=9F=E4=BB=B6----- > =E5=8F=91=E4=BB=B6=E4=BA=BA: Christian Hopps [mailto:chopps@chopps.org] > =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2019=E5=B9=B42=E6=9C=8811=E6=97=A5 = 18:45 > =E6=94=B6=E4=BB=B6=E4=BA=BA: lsr@ietf.org > =E6=8A=84=E9=80=81: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.= org > =E4=B8=BB=E9=A2=98: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flood= ing-02 + IPR > poll. > > > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-0= 2. > > The aim of this document is to describe the problem space and standardize= a > way to signal dynamic flooding information. It does not standardize any > specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to > this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that star= ted > as a distributed flooding topology algorithm and morphed into that plus > competing ideas on signaling of flooding topology information. The intent > after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the = WG > can discuss adding any signaling ideas from this work to the adopted > signaling draft (with proper attribution given as appropriate), and two, = for > the authors of draft-cc-lsr-flooding-reduction-01 to publish a new docume= nt > without the signaling portion and instead focus on their flooding topology > algorithm. This new focused document can be considered in parallel along > with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above will > help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxlj7IACgkQLh2DDte4 MCUP8RAAniXnwdpRcBcwEnvD9HgVaRFWJHeE+ja/d7RoElDm36JfbjEHvGXxI6Qu m4mY+eYuDutgkdEpM4DrZHCH02Z2nya6UIuwYyP6AucRCRtdAvIfvFbzkirgGMxW IKZSAw7jL7aUOsD3chzRhfxaBFc1xoFoKziJZE+RowoIm/4sNZwKtJrDe5hmercq iaAtAa5q5D1PdEMvE+9SYO2wOPGhP9nfOFgqXtZB4xt7FPbaSrHro2mFXmpT6o70 sRXO6BrW7FD1RAACUw/yIinOUdDcGyD1C2vASwVS9W3GwHsZupn++CeSot4ouNa3 e9k1+bdlQ00j7UGAYMXzCbe6IqdcL/opU9KI2P+iN91xKscmDZSJaY+lDX5AM7/e RHWtI3h1QWyUhaPdg5flXOVyRZOBbs0m9kwtlynZ3TS7vwToS/Uk43M0rbQA6LCN zeHS8TpBYyv3SjeHf8E9EhZ7AfHsNyByUapEkjheWUBRA9QTGX7EtZOS/zcWb5GM FIirVuF8ZVZzsmLsTtRStgxoRFOW6auNdWz5qpLvktvUursbIGVMIEF6a6We02R9 n1WPM9MMybppmrukSgj6Q4UzVR/Oxx2TTSlMBDso/oVolYVERIWToedt96hEd6H9 460cg4sYLNU9PfHkF5b1BH2OtmBs7RSts1jP0PliFS/Giu33AZo= =ebRS -----END PGP SIGNATURE----- --=-=-=-- From nobody Thu Feb 14 08:00:42 2019 Return-Path: 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 108BA131096; Thu, 14 Feb 2019 08:00:40 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.701 X-Spam-Level: X-Spam-Status: No, score=-2.701 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_LOW=-0.7, 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=juniper.net 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 Hs7zyjsAkLzf; Thu, 14 Feb 2019 08:00:37 -0800 (PST) Received: from mx0b-00273201.pphosted.com (mx0a-00273201.pphosted.com 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ow== Received: from nam01-by2-obe.outbound.protection.outlook.com (mail-by2nam01lp2051.outbound.protection.outlook.com [104.47.34.51]) by mx0a-00273201.pphosted.com with ESMTP id 2qmw7g97p7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 14 Feb 2019 08:00:32 -0800 Received: from BYAPR05MB5029.namprd05.prod.outlook.com (20.177.230.211) by BYAPR05MB6677.namprd05.prod.outlook.com (20.178.235.147) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1643.9; Thu, 14 Feb 2019 16:00:24 +0000 Received: from BYAPR05MB5029.namprd05.prod.outlook.com ([fe80::b58f:10f1:a40b:abf7]) by BYAPR05MB5029.namprd05.prod.outlook.com ([fe80::b58f:10f1:a40b:abf7%4]) with mapi id 15.20.1622.016; Thu, 14 Feb 2019 16:00:24 +0000 From: John E Drake To: Christian Hopps , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" , Aijun Wang Thread-Topic: =?utf-8?B?W0xzcl0gIOetlOWkjTogIFdHIEFkb3B0aW9uIENhbGwgZm9yIGRyYWZ0LWxp?= 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(localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 46A59128B36; Thu, 14 Feb 2019 15:38:49 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 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_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 HnJeA7G3tWcH; Thu, 14 Feb 2019 15:38:47 -0800 (PST) Received: from mail-lf1-x131.google.com (mail-lf1-x131.google.com [IPv6:2a00:1450:4864:20::131]) (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 B22A01289FA; Thu, 14 Feb 2019 15:38:46 -0800 (PST) Received: by mail-lf1-x131.google.com with SMTP id e27so5844616lfj.8; Thu, 14 Feb 2019 15:38:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=m/L9NgnJPEb5Hv8v9SVI5YNH1qu2RXRRtn4V6QubFqs=; b=F7FXPDHAl37JCRV8IeoWmB+LG02vkqq9g9wXHQA4IXOgok3tEKmlW4q0dXkLkeqRbm yVJLe0iuG0jnPXwr7yyXjr/Q00KFvlb+PygO1ZE+7Lz2cf2UqsnvHTwjx/zzAahFH+XZ uH1E8dtESTd9Z4wjYbpOJEazJUTo6OGV4tYBK/PCEnLJE+wMib1F522Ik9S0cr5tjTtd qjj87X9c4Xx1HOFDM3kQQ5yCsXLd8+GSdSI+/0nIf58U9CVdXxQN8W46bOf4amaQErPV XM4KIYm2x0kVVs3hTD1nmvbhjlOrtdewX1NlqXEDTsG6zY0spnnl/chBpjWayNUoP60q eKHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=m/L9NgnJPEb5Hv8v9SVI5YNH1qu2RXRRtn4V6QubFqs=; b=tPEyAqd/ALyjkkB7nMJ0vAIjiI+Wl/e5w19g1ED2vOmdyHSke288M/CGRDCaNw87JP jQa/H3x0XrphyjLNpX0al0EhXDUoIS8UQCxsFNZTVDaj3Tyq9Oxq6vEyswegTWv6Pid2 TszhS341P/el3zqCmR8s2O5/v0ns3HnNlYdiKQgqmbkWqk75HzlcCykVdOM0IsG7OM++ wUb/242aeQTtO6OerUtQtmdVI3SYvzm/61ICaXawNkTS6bkF0XDpqDoZOG5gazuJf8ne fM2IYjgyxurpO5lSxBlU6X1sJRb/PDG+25pujHjpnHZAr0kaAE75WLXC2IZ3EvmXwmRc 51Hw== X-Gm-Message-State: AHQUAubD0tHOvlGjiB1Rln5lSmiM/Phqzzrwwe3Ib41nPNc/5m+dWMPz Fyvyc22lUHwzEal5l8OZyEeWNakfPDMGmk++dNywjRJ/ X-Google-Smtp-Source: AHgI3IYjtb/d3+4Te07vwljXheYgm27K12ZtJl1g4i0XETRuxn8NzTH/YC+XzQoYvRsdnkdkLPyFXJiy8QRkKHbDEXU= X-Received: by 2002:a19:6f0a:: with SMTP id k10mr3791872lfc.119.1550187524525; Thu, 14 Feb 2019 15:38:44 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: LEI LIU Date: Thu, 14 Feb 2019 15:38:33 -0800 Message-ID: To: Christian Hopps Cc: "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Content-Type: multipart/alternative; boundary="000000000000bc11b70581e328ec" Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 23:38:49 -0000 --000000000000bc11b70581e328ec Content-Type: text/plain; charset="UTF-8" Hi All, In favor of adopting both drafts in parallel, and then one draft focuses on the centralized solution and the other on the distributed solution. Best regards, Lei On Mon, Feb 11, 2019 at 2:47 AM Christian Hopps wrote: > > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > The aim of this document is to describe the problem space and standardize > a way to signal dynamic flooding information. It does not standardize any > specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to > this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that > started as a distributed flooding topology algorithm and morphed into that > plus competing ideas on signaling of flooding topology information. The > intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, > the WG can discuss adding any signaling ideas from this work to the adopted > signaling draft (with proper attribution given as appropriate), and two, > for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new > document without the signaling portion and instead focus on their flooding > topology algorithm. This new focused document can be considered in parallel > along with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above will > help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > --000000000000bc11b70581e328ec Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi All,=C2=A0

In favor of adopting bot= h drafts in parallel, and then one draft focuses on the centralized solutio= n and the other on the distributed solution.

Best re= gards,=C2=A0
Lei

On Mon, Feb 11, 2019 at 2:47 AM Christian Hopps <= ;chopps@chopps.org> wrote:
<= /div>

Hi Folks,

We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02.=

The aim of this document is to describe the problem space and standardize a= way to signal dynamic flooding information. It does not standardize any sp= ecific algorithm for flooding topology creation.

Authors please respond indicating if you are aware of any IPR related to th= is work.

We also have another draft (draft-cc-lsr-flooding-reduction-01) that starte= d as a distributed flooding topology algorithm and morphed into that plus c= ompeting ideas on signaling of flooding topology information. The intent af= ter adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG c= an discuss adding any signaling ideas from this work to the adopted signali= ng draft (with proper attribution given as appropriate), and two, for the a= uthors of draft-cc-lsr-flooding-reduction-01 to publish a new document with= out the signaling portion and instead focus on their flooding topology algo= rithm. This new focused document can be considered in parallel along with t= he other algorithm work that has been proposed.

Flooding topology creation is seen as a hard problem for which we don't= expect a one-size-fits-all solution. Taking the steps outlined above will = help us move forward on the solutions.

Thanks,
Chris & Acee.
LSR WG Chairs.
_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/mailman/listinfo/lsr



--000000000000bc11b70581e328ec-- From nobody Thu Feb 14 15:43:42 2019 Return-Path: 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 05AAD1289FA; Thu, 14 Feb 2019 15:43:40 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 w_O3jHDjzKhU; Thu, 14 Feb 2019 15:43:38 -0800 (PST) Received: from rcdn-iport-8.cisco.com (rcdn-iport-8.cisco.com [173.37.86.79]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D4813124C04; Thu, 14 Feb 2019 15:43:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2538; q=dns/txt; s=iport; t=1550187817; x=1551397417; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=5e5sq7aUJAT+oxH1ObMsuH3TJD0mOANnerUNa3fvaKQ=; b=mUMb7ztTTy7j74jIAXwqGPoFVv9XMUnKxXdx/UfDFH5MzcuWLaein3/1 cUkFz0yp9QcmkCmeWlM2xwALcgU3k7brIyeZ+S2zrKB4Qss00PZKM7yxR 0CF/EGw66EYu9Kd8qCdzE6F7+EBW6BdpiYw/nmdhuJt4aajPI3s6ErXhp E=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0BdAABs/GVc/5pdJa1kGgEBAQEBAgE?= =?us-ascii?q?BAQEHAgEBAQGBZYIDgWonCoN8lAqCDZoOCwEBhGwCF4NMIjgSAQMBAQIBAQJ?= =?us-ascii?q?tKIVKAQEBBB0GEUUMBAIBCA4DAwECAwImAgICMBUICAIEAQ0FG4MFgXOrLIE?= =?us-ascii?q?vhUSEcYELizkXgUA/gTgfgkyICjGCJgKjLgkCklIZgW6FVIsxiWsJRpFxAhE?= =?us-ascii?q?UgSc2IYFWcBVlAYJBkF1BMY9HgR8BAQ?= X-IronPort-AV: E=Sophos;i="5.58,370,1544486400"; d="scan'208";a="516971666" Received: from rcdn-core-3.cisco.com ([173.37.93.154]) by rcdn-iport-8.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Feb 2019 23:43:36 +0000 Received: from XCH-RCD-007.cisco.com (xch-rcd-007.cisco.com [173.37.102.17]) by rcdn-core-3.cisco.com (8.15.2/8.15.2) with ESMTPS id x1ENha1l021314 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Thu, 14 Feb 2019 23:43:36 GMT Received: from xch-rcd-008.cisco.com (173.37.102.18) by XCH-RCD-007.cisco.com (173.37.102.17) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 14 Feb 2019 17:43:35 -0600 Received: from xch-rcd-008.cisco.com ([173.37.102.18]) by XCH-RCD-008.cisco.com ([173.37.102.18]) with mapi id 15.00.1395.000; Thu, 14 Feb 2019 17:43:35 -0600 From: "Mankamana Mishra (mankamis)" To: Christian Hopps , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. Thread-Index: AQHUwfcyZQNJFRTMu0ukLKJH0mg+fKXf2L2A Date: Thu, 14 Feb 2019 23:43:35 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.154.204.190] Content-Type: text/plain; charset="utf-8" Content-ID: <0CF0E9BFD8A58445A060795DE8145214@emea.cisco.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Outbound-SMTP-Client: 173.37.102.17, xch-rcd-007.cisco.com X-Outbound-Node: rcdn-core-3.cisco.com Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. 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MUtwVHhyX1UzbjBwWm5rbnZ1UEJHeFJNOXVsMDhxQ0twYUVlWGsmZT0NCiAgICAgICAgDQogICAg DQogICAgDQoNCg== From nobody Mon Feb 18 00:31:50 2019 Return-Path: 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 C163A130EE0 for ; Mon, 18 Feb 2019 00:31:48 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=nokia.onmicrosoft.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 bdOyNNFYkhM6 for ; Mon, 18 Feb 2019 00:31:46 -0800 (PST) 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[Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 08:42:25 -0000 --_000_AM0PR07MB51375BB0DD4AE3CD300893C3E0630AM0PR07MB5137eurp_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 KzEgZm9yIHN1cHBvcnQuDQpTZWVtcyBhcyBhIHVzZWZ1bCBleHRlbnNpb24gdG8gaGF2ZSBhdmFp bGFibGUgaW4gT1NQRiB0b29sYm94Lg0KDQpHLw0KDQpGcm9tOiBMc3IgPGxzci1ib3VuY2VzQGll dGYub3JnPiBPbiBCZWhhbGYgT2YgQWNlZSBMaW5kZW0gKGFjZWUpDQpTZW50OiBXZWRuZXNkYXks IEZlYnJ1YXJ5IDEzLCAyMDE5IDIwOjI2DQpUbzogbHNyQGlldGYub3JnDQpTdWJqZWN0OiBbTHNy XSBXb3JraW5nIEdyb3VwIEFkb3B0aW9uIFBvbGwgZm9yICJPU1BGIEV4dGVuc2lvbiBmb3IgUHJl Zml4IE9yaWdpbmF0b3IiIC0gZHJhZnQtd2FuZy1sc3Itb3NwZi1wcmVmaXgtb3JpZ2luYXRvci1l 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(PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=962; q=dns/txt; s=iport; t=1550495706; x=1551705306; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=jaTWu6KRHkBmElAB6JdGXkrNXHQm7mC/CIzuBcnSmYc=; b=XPTpylYOXFDVibeZLF44MGfq4xVrjKCxRm9wbdvBiJSo5bPAvaz5g5yD nqPyt+pR3bsVX2u44o2de070fxV/ZinIaEhcslql3GhxVU4RsHVUHJ/uD xKP+u2NXBITPAf3y6WoNGz0r2vQ3jI1XJJ0o9RtMWOv03cZ7RHUXZE9cl 4=; X-IronPort-AV: E=Sophos;i="5.58,384,1544486400"; d="scan'208";a="10204030" Received: from aer-iport-nat.cisco.com (HELO aer-core-4.cisco.com) ([173.38.203.22]) by aer-iport-1.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Feb 2019 13:15:04 +0000 Received: from [10.147.24.16] ([10.147.24.16]) by aer-core-4.cisco.com (8.15.2/8.15.2) with ESMTP id x1IDF4l1025754; Mon, 18 Feb 2019 13:15:04 GMT To: "Acee Lindem (acee)" , "lsr@ietf.org" References: From: Peter Psenak Message-ID: Date: Mon, 18 Feb 2019 14:15:04 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.147.24.16, [10.147.24.16] X-Outbound-Node: aer-core-4.cisco.com Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 13:15:09 -0000 Support as coauthor, although I never really agreed with the usage of the prefix originator for topology construction as described in section 3 and 5. I would prefer that part to be removed. thanks, Peter On 13/02/2019 14:25 , Acee Lindem (acee) wrote: > This begins a two week adoption poll for the subject draft. Please send > your comments to this list before 12:00 AM UTC on Thursday, February > 28^th , 2019. > > > > All authors have responded to the IPR poll and there is one > https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-wang-lsr-ospf-prefix-originator-ext > > It is listed multiple times but references the same CN201810650141. > > > > Thanks, > > Acee > > > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > From nobody Mon Feb 18 05:19:07 2019 Return-Path: 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 F120D130EFC for ; Mon, 18 Feb 2019 05:19:04 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 mEY5ugMN1NUb for ; Mon, 18 Feb 2019 05:19:02 -0800 (PST) Received: from aer-iport-1.cisco.com (aer-iport-1.cisco.com [173.38.203.51]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 143E1130EF2 for ; Mon, 18 Feb 2019 05:19:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1905; q=dns/txt; s=iport; t=1550495942; x=1551705542; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=csnpYg35zVZgVhbXDU2ZUCZ9kDA92JktytWpejX/2DA=; b=kcRqTYUelC3m2W5MSHLUJt9TMG8jyV6n0ybWzQ/FcyB5FhUQ7lp4YlDU cOfu9wvqbQUz4sMi8fyA3miiFdDKzjjI6tszeUYVyLXgBfAiO1V+HWVtO t0hqM+zXyBk6lTjx3+sHDqjrQ7Q9B0JwLMBqjdCXEHFHHwsRnQ9mZJ9nr I=; X-IronPort-AV: E=Sophos;i="5.58,384,1544486400"; d="scan'208";a="10204110" Received: from aer-iport-nat.cisco.com (HELO aer-core-4.cisco.com) ([173.38.203.22]) by aer-iport-1.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Feb 2019 13:19:00 +0000 Received: from [10.147.24.16] ([10.147.24.16]) by aer-core-4.cisco.com (8.15.2/8.15.2) with ESMTP id x1IDIx3a026334; Mon, 18 Feb 2019 13:18:59 GMT To: "Goethals, Dirk (Nokia - BE/Antwerp)" , "Acee Lindem (acee)" , "lsr@ietf.org" References: From: Peter Psenak Message-ID: <5b1be003-eaf2-768f-bb0e-ac949df40665@cisco.com> Date: Mon, 18 Feb 2019 14:18:59 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.147.24.16, [10.147.24.16] X-Outbound-Node: aer-core-4.cisco.com Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 13:19:05 -0000 Hi Dirk, On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: > support +1 > > 1 question: > >> When S1 in another area receives such LSA, it then can learn that >> prefix Lt1 is associated with node T1, check the ELC, ERLD, or MSD >> value according to its necessity, and construct the right label stack >> at the ingress node S1 for the traffic destined to Lt1. > > How is S1 going to know the "ELC, ERLD, or MSD" of node T1? > I guess, T1 will need to send an AS-scoped router info LSA? yes, that is a possibility. > > If so, should T1 be ASBR as to be able to send this AS-scoped LSA? I would not think so. > I guess it was needed before as to enforce the ABR to create the T4 LSAs, > so that others can learn which ABR to use to reach T4, but I guess > it's not needed anymore when this draft is implemented. not sure how you reached the above conclusion. Can you please clarify? thanks, Peter > > Regards, > Dirk > > > On 2/13/2019 14:25, Acee Lindem (acee) wrote: >> >> This begins a two week adoption poll for the subject draft. Please >> send your comments to this list before 12:00 AM UTC on Thursday, >> February 28^th , 2019. >> >> >> >> All authors have responded to the IPR poll and there is one >> https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-wang-lsr-ospf-prefix-originator-ext >> >> It is listed multiple times but references the same CN201810650141. >> >> >> >> Thanks, >> >> Acee >> >> >> >> >> _______________________________________________ >> Lsr mailing list >> Lsr@ietf.org >> https://www.ietf.org/mailman/listinfo/lsr > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > From nobody Mon Feb 18 05:22:06 2019 Return-Path: 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 283F2130EFC for ; Mon, 18 Feb 2019 05:22:05 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.5 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lLkdD/hgTD4WGcFVT82Ol64HuG7uVIV7NFN3bJm7KLFTRL38mSrokpAwW6gabD58UCjVwRvSMwsS1Ima1RkxISSGjsJXWQE1DWGzXn1BtmKi8ar+Ytnr30D//4tVycyxohHuk6UrHBEfrlAOdp5ALbpm869aU5LY45+3hZLa56MhLuBlYXckLN26FcDb315JtZ9+egnYPVmSzRe1qEMRJwWOUPSnZsb7bg3U/EAVGn7bporg1+je6cU4+jitN/Z2sriBOP6EX/SO6DKDti7P6ZXjmIg75/uOIc9Vvoty4xdZewc2oJtYVTA2RnWTUjt1riE/nUvdZzy/D/5hpCm2lmgnw7EYM5KCL8uhzaNf2tPJJQdjZstb9I12Nt57HgvKGjnRelFVSV4FiyvuRh9D3E+AfP4zghZcub+EqO3vjh4= Content-Type: multipart/alternative; boundary="_000_bb94eb2a70071b356071d71e1fd438afnokiacom_" MIME-Version: 1.0 X-OriginatorOrg: nokia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0ef25772-735c-4388-81a9-08d695a4cb43 X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Feb 2019 13:27:12.9893 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: 5d471751-9675-428d-917b-70f44f9630b0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR07MB5497 Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 13:27:20 -0000 --_000_bb94eb2a70071b356071d71e1fd438afnokiacom_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hi Peter, See inline DG>. Dirk On 2/18/2019 14:18, Peter Psenak wrote: Hi Dirk, On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: support +1 1 question: When S1 in another area receives such LSA, it then can learn that prefix Lt1 is associated with node T1, check the ELC, ERLD, or MSD value according to its necessity, and construct the right label stack at the ingress node S1 for the traffic destined to Lt1. How is S1 going to know the "ELC, ERLD, or MSD" of node T1? I guess, T1 will need to send an AS-scoped router info LSA? yes, that is a possibility. If so, should T1 be ASBR as to be able to send this AS-scoped LSA? I would not think so. DG> What's the use of an AS-scoped LSA, if the receiver has no way to identify/locate the advertising router? Making T1 an ASBR will enforce the ABR to create a T4 LSA. I guess it was needed before as to enforce the ABR to create the T4 LSAs, so that others can learn which ABR to use to reach T4, but I guess it's not needed anymore when this draft is implemented. not sure how you reached the above conclusion. Can you please clarify? DG> Since the ABR is adding the originator, one can indirectly learn that the originator is also reachable via this ABR. thanks, Peter Regards, Dirk On 2/13/2019 14:25, Acee Lindem (acee) wrote: This begins a two week adoption poll for the subject draft. Please send your comments to this list before 12:00 AM UTC on Thursday, February 28^th , 2019. All authors have responded to the IPR poll and there is one https://datatrac= ker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-lsr-ospf-prefix-ori= ginator-ext It is listed multiple times but references the same CN201810650141. Thanks, Acee _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr --_000_bb94eb2a70071b356071d71e1fd438afnokiacom_ Content-Type: text/html; charset="Windows-1252" Content-ID: <8507F07C0DEE8347A352342115128ABF@eurprd07.prod.outlook.com> Content-Transfer-Encoding: quoted-printable Hi Peter,
See inline DG>.
Dirk


On 2/18/2019 14:18, Peter Psenak wrote:
Hi Dirk,

On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote:
support +1

1 question:

When S1 in another area receives such LSA, it the= n can learn that
   prefix Lt1 is associated with node T1, check the ELC, ERLD, or= MSD
   value according to its necessity, and construct the right labe= l stack
   at the ingress node S1 for the traffic destined to Lt1.

How is S1 going to know the "ELC, ERLD, or MSD" of  node T1?=
I guess, T1 will need to send an AS-scoped router info LSA?

yes, that is a possibility.


If so, should T1 be ASBR as to be able to send this AS-scoped LSA?

I would not think so.
DG> What's the use of an AS-scoped LSA, if the receiver has no way
to identify/locate the advertising router? Making T1 an ASBR will
enforce the ABR to create a T4 LSA.


I guess it was needed before as to enforce  = the ABR to create the T4 LSAs,
so that others can learn which ABR to use to reach T4, but I guess
it's not needed anymore when this draft is implemented.

not sure how you reached the above conclusion. Can you please clarify?
DG> Since the ABR is adding the originator, one can indirectly learn tha= t
the originator is also reachable via this ABR.

thanks,
Peter




Regards,
Dirk


On 2/13/2019 14:25, Acee Lindem (acee) wrote:

This begins a two week adoption poll for the subject draft. Please
send your comments to this list before 12:00 AM UTC on Thursday,
February 28^th , 2019.



All authors have responded to the IPR poll and there is one
<https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft= -wang-lsr-ospf-prefix-originator-ext> https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang= -lsr-ospf-prefix-originator-ext

It is listed multiple times but references the same CN201810650141.



Thanks,

Acee




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--_000_bb94eb2a70071b356071d71e1fd438afnokiacom_-- From nobody Mon Feb 18 05:34:11 2019 Return-Path: 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 57D1D130EFC for ; Mon, 18 Feb 2019 05:34:08 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 31RcMPW5dtfs for ; Mon, 18 Feb 2019 05:34:06 -0800 (PST) Received: from aer-iport-1.cisco.com (aer-iport-1.cisco.com [173.38.203.51]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CC25E128B14 for ; Mon, 18 Feb 2019 05:34:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2933; q=dns/txt; s=iport; t=1550496845; x=1551706445; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=3A93dyA8apsEnm8G+nMXafeq7sjC8a1SkPcze+JK2zU=; b=Ejone9wBjNC6SwNKxAt+vOeHXxfkZ3rqyG1LeOe2V6pNkuoz/tkQDu+r GsWyjT26/sEb/Km8tA+pszmQqfG89fei9TbNrIjMuOoT/ll7WrViVhR2b Bu9zPZnpiL+QpUEfS6DQWBMVrQ5cu/Ojev/yf56RCDk+bqbJu31Tz6b76 s=; X-IronPort-AV: E=Sophos;i="5.58,384,1544486400"; d="scan'208";a="10204577" Received: from aer-iport-nat.cisco.com (HELO aer-core-3.cisco.com) ([173.38.203.22]) by aer-iport-1.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Feb 2019 13:34:03 +0000 Received: from [10.147.24.16] ([10.147.24.16]) by aer-core-3.cisco.com (8.15.2/8.15.2) with ESMTP id x1IDY3r9030774; Mon, 18 Feb 2019 13:34:04 GMT To: "Goethals, Dirk (Nokia - BE/Antwerp)" , "Acee Lindem (acee)" , "lsr@ietf.org" References: <5b1be003-eaf2-768f-bb0e-ac949df40665@cisco.com> From: Peter Psenak Message-ID: <02775482-a62d-7fde-0284-f3156ea5703f@cisco.com> Date: Mon, 18 Feb 2019 14:34:03 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.147.24.16, [10.147.24.16] X-Outbound-Node: aer-core-3.cisco.com Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 13:34:08 -0000 Hi Dirk, On 18/02/2019 14:27 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: > Hi Peter, > See inline DG>. > Dirk > > > On 2/18/2019 14:18, Peter Psenak wrote: >> Hi Dirk, >> >> On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: >>> support +1 >>> >>> 1 question: >>> >>>> When S1 in another area receives such LSA, it then can learn that >>>> prefix Lt1 is associated with node T1, check the ELC, ERLD, or MSD >>>> value according to its necessity, and construct the right label >>>> stack >>>> at the ingress node S1 for the traffic destined to Lt1. >>> >>> How is S1 going to know the "ELC, ERLD, or MSD" of node T1? >>> I guess, T1 will need to send an AS-scoped router info LSA? >> >> yes, that is a possibility. >> >>> >>> If so, should T1 be ASBR as to be able to send this AS-scoped LSA? >> >> I would not think so. > DG> What's the use of an AS-scoped LSA, if the receiver has no way > to identify/locate the advertising router? Making T1 an ASBR will > enforce the ABR to create a T4 LSA. if the T1 advertises some properties in it's AS-scoped LSA and you use these when you send a traffic to some of the prefixes that T1 originates, then you don't really need to know where it is located, you only care about its properties. >> >> >>> I guess it was needed before as to enforce the ABR to create the T4 >>> LSAs, >>> so that others can learn which ABR to use to reach T4, but I guess >>> it's not needed anymore when this draft is implemented. >> >> not sure how you reached the above conclusion. Can you please clarify? > DG> Since the ABR is adding the originator, one can indirectly learn that > the originator is also reachable via this ABR. well, I don't think we want to replace the Type-4 LSA functionality with the Prefix-Originator. thanks, Peter >> >> thanks, >> Peter >> >> >> >>> >>> Regards, >>> Dirk >>> >>> >>> On 2/13/2019 14:25, Acee Lindem (acee) wrote: >>>> >>>> This begins a two week adoption poll for the subject draft. Please >>>> send your comments to this list before 12:00 AM UTC on Thursday, >>>> February 28^th , 2019. >>>> >>>> >>>> >>>> All authors have responded to the IPR poll and there is one >>>> >>>> https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-wang-lsr-ospf-prefix-originator-ext >>>> >>>> >>>> It is listed multiple times but references the same CN201810650141. >>>> >>>> >>>> >>>> Thanks, >>>> >>>> Acee >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> Lsr mailing list >>>> Lsr@ietf.org >>>> https://www.ietf.org/mailman/listinfo/lsr >>> >>> >>> >>> _______________________________________________ >>> Lsr mailing list >>> Lsr@ietf.org >>> https://www.ietf.org/mailman/listinfo/lsr >>> >> > From nobody Mon Feb 18 05:37:26 2019 Return-Path: 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 ED612128B14 for ; Mon, 18 Feb 2019 05:37:24 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); 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boundary="_000_4b3b24db0a9ca1257ac6cf5c8c9b6cd9nokiacom_" MIME-Version: 1.0 X-OriginatorOrg: nokia.com X-MS-Exchange-CrossTenant-Network-Message-Id: fdc3a279-ea54-48de-40b5-08d695a7a275 X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Feb 2019 13:47:33.4602 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: 5d471751-9675-428d-917b-70f44f9630b0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR07MB4745 Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 13:47:40 -0000 --_000_4b3b24db0a9ca1257ac6cf5c8c9b6cd9nokiacom_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hi Peter, and you use these when you send a traffic to some of the prefixes that T1 o= riginates If T1 is not ASBR, and this draft is not implemented, how are the nodes in= the other area's going to know that the prefixes belong to T1? Dirk On 2/18/2019 14:34, Peter Psenak wrote: Hi Dirk, On 18/02/2019 14:27 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: Hi Peter, See inline DG>. Dirk On 2/18/2019 14:18, Peter Psenak wrote: Hi Dirk, On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: support +1 1 question: When S1 in another area receives such LSA, it then can learn that prefix Lt1 is associated with node T1, check the ELC, ERLD, or MSD value according to its necessity, and construct the right label stack at the ingress node S1 for the traffic destined to Lt1. How is S1 going to know the "ELC, ERLD, or MSD" of node T1? I guess, T1 will need to send an AS-scoped router info LSA? yes, that is a possibility. If so, should T1 be ASBR as to be able to send this AS-scoped LSA? I would not think so. DG> What's the use of an AS-scoped LSA, if the receiver has no way to identify/locate the advertising router? Making T1 an ASBR will enforce the ABR to create a T4 LSA. if the T1 advertises some properties in it's AS-scoped LSA and you use thes= e when you send a traffic to some of the prefixes that T1 originates, then = you don't really need to know where it is located, you only care about its = properties. I guess it was needed before as to enforce the ABR to create the T4 LSAs, so that others can learn which ABR to use to reach T4, but I guess it's not needed anymore when this draft is implemented. not sure how you reached the above conclusion. Can you please clarify? DG> Since the ABR is adding the originator, one can indirectly learn that the originator is also reachable via this ABR. well, I don't think we want to replace the Type-4 LSA functionality with th= e Prefix-Originator. thanks, Peter thanks, Peter Regards, Dirk On 2/13/2019 14:25, Acee Lindem (acee) wrote: This begins a two week adoption poll for the subject draft. Please send your comments to this list before 12:00 AM UTC on Thursday, February 28^th , 2019. All authors have responded to the IPR poll and there is one https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-lsr= -ospf-prefix-originator-ext It is listed multiple times but references the same CN201810650141. Thanks, Acee _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr --_000_4b3b24db0a9ca1257ac6cf5c8c9b6cd9nokiacom_ Content-Type: text/html; charset="Windows-1252" Content-ID: <3CE8D3C168748141B9ED82E0D6E64D5E@eurprd07.prod.outlook.com> Content-Transfer-Encoding: quoted-printable Hi Peter,
and you use these when you send a traffic to some= of the prefixes that T1 originates

If T1 is not ASBR,  and this draft is not implemented, how are the nod= es in the
other area's going to know that the prefixes belong to T1?
Dirk


On 2/18/2019 14:34, Peter Psenak wrote:
Hi Dirk,

On 18/02/2019 14:27 , Goethals, Dirk (Nokia - BE/Antwerp) wrote:
Hi Peter,
See inline DG>.
Dirk


On 2/18/2019 14:18, Peter Psenak wrote:
Hi Dirk,

On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote:
support +1

1 question:

When S1 in another area receives such LSA, it the= n can learn that
   prefix Lt1 is associated with node T1, check the ELC, ERLD, or= MSD
   value according to its necessity, and construct the right labe= l
stack
   at the ingress node S1 for the traffic destined to Lt1.

How is S1 going to know the "ELC, ERLD, or MSD" of  node T1?=
I guess, T1 will need to send an AS-scoped router info LSA?

yes, that is a possibility.


If so, should T1 be ASBR as to be able to send this AS-scoped LSA?

I would not think so.
DG> What's the use of an AS-scoped LSA, if the receiver has no way
to identify/locate the advertising router? Making T1 an ASBR will
enforce the ABR to create a T4 LSA.

if the T1 advertises some properties in it's AS-scoped LSA and you use thes= e when you send a traffic to some of the prefixes that T1 originates, then = you don't really need to know where it is located, you only care about its = properties.





I guess it was needed before as to enforce  = the ABR to create the T4
LSAs,
so that others can learn which ABR to use to reach T4, but I guess
it's not needed anymore when this draft is implemented.

not sure how you reached the above conclusion. Can you please clarify?
DG> Since the ABR is adding the originator, one can indirectly learn tha= t
the originator is also reachable via this ABR.

well, I don't think we want to replace the Type-4 LSA functionality with th= e Prefix-Originator.

thanks,
Peter


thanks,
Peter




Regards,
Dirk


On 2/13/2019 14:25, Acee Lindem (acee) wrote:

This begins a two week adoption poll for the subject draft. Please
send your comments to this list before 12:00 AM UTC on Thursday,
February 28^th , 2019.



All authors have responded to the IPR poll and there is one
<https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft= -wang-lsr-ospf-prefix-originator-ext>
https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wan= g-lsr-ospf-prefix-originator-ext


It is listed multiple times but references the same CN201810650141.



Thanks,

Acee




_______________________________________________
Lsr mailing list
Lsr@ietf= .org
https://www.ietf.org/mailman/listinfo/lsr



_______________________________________________
Lsr mailing list
Lsr@ietf= .org
https://www.ietf.org/mailman/listinfo/lsr





--_000_4b3b24db0a9ca1257ac6cf5c8c9b6cd9nokiacom_-- From nobody Mon Feb 18 06:01:48 2019 Return-Path: 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 8FF85130F0F for ; Mon, 18 Feb 2019 06:01:46 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 XwH0Uw_5lf-v for ; Mon, 18 Feb 2019 06:01:39 -0800 (PST) Received: from aer-iport-1.cisco.com (aer-iport-1.cisco.com [173.38.203.51]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 35361130FAB for ; Mon, 18 Feb 2019 06:01:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3788; q=dns/txt; s=iport; t=1550498498; x=1551708098; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=+XzgvAUVE8ICJgHwYRa1j8zHnxj8dCNVosxgD2yDUKM=; b=EwQlMKRADXyzVvxPIFXBsnb1aauPZeq5DRT/E98YLBLQuz1PYe+bBAMF Rb0eAIlOS2vOLcyM3dy4fwNiKHpxaKYfXYwk3MdK5Kp3dRzLGXBecLhgF y35PI1AxapDtgRgrSsD5gk0J8B4a8kJt7ZYjfWkPe1qLX2nqvzJHafrLV Q=; X-IronPort-AV: E=Sophos;i="5.58,384,1544486400"; d="scan'208";a="10205276" Received: from aer-iport-nat.cisco.com (HELO aer-core-4.cisco.com) ([173.38.203.22]) by aer-iport-1.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Feb 2019 14:01:36 +0000 Received: from [10.147.24.16] ([10.147.24.16]) by aer-core-4.cisco.com (8.15.2/8.15.2) with ESMTP id x1IE1ZuM001688; Mon, 18 Feb 2019 14:01:36 GMT To: "Goethals, Dirk (Nokia - BE/Antwerp)" , "Acee Lindem (acee)" , "lsr@ietf.org" References: <5b1be003-eaf2-768f-bb0e-ac949df40665@cisco.com> <02775482-a62d-7fde-0284-f3156ea5703f@cisco.com> <4b3b24db-0a9c-a125-7ac6-cf5c8c9b6cd9@nokia.com> From: Peter Psenak Message-ID: <192c9ded-3a9f-bb2c-de00-e222bcd2ec10@cisco.com> Date: Mon, 18 Feb 2019 15:01:35 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <4b3b24db-0a9c-a125-7ac6-cf5c8c9b6cd9@nokia.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.147.24.16, [10.147.24.16] X-Outbound-Node: aer-core-4.cisco.com Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 14:01:47 -0000 Hi Dirk, On 18/02/2019 14:47 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: > Hi Peter, >> and you use these when you send a traffic to some of the prefixes that >> T1 originates > > If T1 is not ASBR, and this draft is not implemented, how are the nodes > in the > other area's going to know that the prefixes belong to T1? that is exactly what this draft is trying to address. Today there is no way to determine the originator of the prefix in the remote area. We are adding that functionality in this draft. thanks, Peter > Dirk > > > On 2/18/2019 14:34, Peter Psenak wrote: >> Hi Dirk, >> >> On 18/02/2019 14:27 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: >>> Hi Peter, >>> See inline DG>. >>> Dirk >>> >>> >>> On 2/18/2019 14:18, Peter Psenak wrote: >>>> Hi Dirk, >>>> >>>> On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: >>>>> support +1 >>>>> >>>>> 1 question: >>>>> >>>>>> When S1 in another area receives such LSA, it then can learn that >>>>>> prefix Lt1 is associated with node T1, check the ELC, ERLD, or MSD >>>>>> value according to its necessity, and construct the right label >>>>>> stack >>>>>> at the ingress node S1 for the traffic destined to Lt1. >>>>> >>>>> How is S1 going to know the "ELC, ERLD, or MSD" of node T1? >>>>> I guess, T1 will need to send an AS-scoped router info LSA? >>>> >>>> yes, that is a possibility. >>>> >>>>> >>>>> If so, should T1 be ASBR as to be able to send this AS-scoped LSA? >>>> >>>> I would not think so. >>> DG> What's the use of an AS-scoped LSA, if the receiver has no way >>> to identify/locate the advertising router? Making T1 an ASBR will >>> enforce the ABR to create a T4 LSA. >> >> if the T1 advertises some properties in it's AS-scoped LSA and you use >> these when you send a traffic to some of the prefixes that T1 >> originates, then you don't really need to know where it is located, >> you only care about its properties. >> >> >> >>>> >>>> >>>>> I guess it was needed before as to enforce the ABR to create the T4 >>>>> LSAs, >>>>> so that others can learn which ABR to use to reach T4, but I guess >>>>> it's not needed anymore when this draft is implemented. >>>> >>>> not sure how you reached the above conclusion. Can you please clarify? >>> DG> Since the ABR is adding the originator, one can indirectly learn >>> that >>> the originator is also reachable via this ABR. >> >> well, I don't think we want to replace the Type-4 LSA functionality >> with the Prefix-Originator. >> >> thanks, >> Peter >> >>>> >>>> thanks, >>>> Peter >>>> >>>> >>>> >>>>> >>>>> Regards, >>>>> Dirk >>>>> >>>>> >>>>> On 2/13/2019 14:25, Acee Lindem (acee) wrote: >>>>>> >>>>>> This begins a two week adoption poll for the subject draft. Please >>>>>> send your comments to this list before 12:00 AM UTC on Thursday, >>>>>> February 28^th , 2019. >>>>>> >>>>>> >>>>>> >>>>>> All authors have responded to the IPR poll and there is one >>>>>> >>>>>> >>>>>> https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-wang-lsr-ospf-prefix-originator-ext >>>>>> >>>>>> >>>>>> >>>>>> It is listed multiple times but references the same CN201810650141. >>>>>> >>>>>> >>>>>> >>>>>> Thanks, >>>>>> >>>>>> Acee >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Lsr mailing list >>>>>> Lsr@ietf.org >>>>>> https://www.ietf.org/mailman/listinfo/lsr >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Lsr mailing list >>>>> Lsr@ietf.org >>>>> https://www.ietf.org/mailman/listinfo/lsr >>>>> >>>> >>> >> > From nobody Mon Feb 18 06:02:28 2019 Return-Path: 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 D81C7130F13 for ; Mon, 18 Feb 2019 06:02:26 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 VcUKDyoAXINh for ; Mon, 18 Feb 2019 06:02:24 -0800 (PST) Received: from aer-iport-4.cisco.com (aer-iport-4.cisco.com [173.38.203.54]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 078F912941A for ; Mon, 18 Feb 2019 06:02:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1632; q=dns/txt; s=iport; t=1550498544; x=1551708144; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=WiVWBJ4y7ujKfd9m9Q0+3L2oyiFiNb4PkJlSQgxHJGs=; b=Gvvfc5XwY0rPm4NnpBqUMXh0ziAmwTp5z7YwOhqP5qe81GjRCKsyIfEl LQGDb9DlCLU7hjfYvODhGEfXGLc2ZjDnxqOWj2eIr2arylBtltgxyB+kg 4ZO1N3R5B2vsmdNSCF4AwICPCH6V30xujmpaD/Ezjqs0NOHGxfrcC9kZd w=; X-IronPort-AV: E=Sophos;i="5.58,384,1544486400"; d="scan'208";a="10145000" Received: from aer-iport-nat.cisco.com (HELO aer-core-1.cisco.com) ([173.38.203.22]) by aer-iport-4.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Feb 2019 14:02:22 +0000 Received: from [10.147.24.16] ([10.147.24.16]) by aer-core-1.cisco.com (8.15.2/8.15.2) with ESMTP id x1IE2K1O032608; Mon, 18 Feb 2019 14:02:21 GMT To: "Goethals, Dirk (Nokia - BE/Antwerp)" , "Acee Lindem (acee)" , "lsr@ietf.org" References: From: Peter Psenak Message-ID: <6d8caf2b-cb62-e862-67d5-a64d75653dfb@cisco.com> Date: Mon, 18 Feb 2019 15:02:20 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.147.24.16, [10.147.24.16] X-Outbound-Node: aer-core-1.cisco.com Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 14:02:27 -0000 On 18/02/2019 14:37 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: > I agree with Peter. > For this to work, the ABR would need to add ALL originators, while I > had the impression that we only had 1 originator per prefix, > i.e. the originator which was found to be the closed to the ABR and > for which the ABR installed a route. above is exactly right. thanks, Peter > > Dirk > > > On 2/18/2019 14:15, Peter Psenak wrote: >> Support as coauthor, although I never really agreed with the usage of >> the prefix originator for topology construction as described in >> section 3 and 5. I would prefer that part to be removed. >> >> thanks, >> Peter >> >> >> On 13/02/2019 14:25 , Acee Lindem (acee) wrote: >>> This begins a two week adoption poll for the subject draft. Please send >>> your comments to this list before 12:00 AM UTC on Thursday, February >>> 28^th , 2019. >>> >>> >>> >>> All authors have responded to the IPR poll and there is one >>> >>> https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-wang-lsr-ospf-prefix-originator-ext >>> >>> >>> It is listed multiple times but references the same CN201810650141. >>> >>> >>> >>> Thanks, >>> >>> Acee >>> >>> >>> >>> >>> >>> _______________________________________________ >>> Lsr mailing list >>> Lsr@ietf.org >>> https://www.ietf.org/mailman/listinfo/lsr >>> >> >> _______________________________________________ >> Lsr mailing list >> Lsr@ietf.org >> https://www.ietf.org/mailman/listinfo/lsr > From nobody Mon Feb 18 06:07:56 2019 Return-Path: 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 D56D8130F1A for ; Mon, 18 Feb 2019 06:07:54 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); 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boundary="_000_2399f28bfe1cdd8c4ab3c007a28a69eenokiacom_" MIME-Version: 1.0 X-OriginatorOrg: nokia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 658b9240-2b6f-4b59-eb67-08d695aa773b X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Feb 2019 14:07:49.4376 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: 5d471751-9675-428d-917b-70f44f9630b0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR07MB4074 Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 14:07:55 -0000 --_000_2399f28bfe1cdd8c4ab3c007a28a69eenokiacom_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable I think we are in sync, i.e. without this draft there is no use-case for node T1 to send an AS-scoped router info LSA without being ASBR. Please correct if you know of an existing use-case. Thx, Dirk On 2/18/2019 15:01, Peter Psenak wrote: Hi Dirk, On 18/02/2019 14:47 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: Hi Peter, and you use these when you send a traffic to some of the prefixes that T1 originates If T1 is not ASBR, and this draft is not implemented, how are the nodes in the other area's going to know that the prefixes belong to T1? that is exactly what this draft is trying to address. Today there is no way= to determine the originator of the prefix in the remote area. We are addin= g that functionality in this draft. thanks, Peter Dirk On 2/18/2019 14:34, Peter Psenak wrote: Hi Dirk, On 18/02/2019 14:27 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: Hi Peter, See inline DG>. Dirk On 2/18/2019 14:18, Peter Psenak wrote: Hi Dirk, On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: support +1 1 question: When S1 in another area receives such LSA, it then can learn that prefix Lt1 is associated with node T1, check the ELC, ERLD, or MSD value according to its necessity, and construct the right label stack at the ingress node S1 for the traffic destined to Lt1. How is S1 going to know the "ELC, ERLD, or MSD" of node T1? I guess, T1 will need to send an AS-scoped router info LSA? yes, that is a possibility. If so, should T1 be ASBR as to be able to send this AS-scoped LSA? I would not think so. DG> What's the use of an AS-scoped LSA, if the receiver has no way to identify/locate the advertising router? Making T1 an ASBR will enforce the ABR to create a T4 LSA. if the T1 advertises some properties in it's AS-scoped LSA and you use these when you send a traffic to some of the prefixes that T1 originates, then you don't really need to know where it is located, you only care about its properties. I guess it was needed before as to enforce the ABR to create the T4 LSAs, so that others can learn which ABR to use to reach T4, but I guess it's not needed anymore when this draft is implemented. not sure how you reached the above conclusion. Can you please clarify? DG> Since the ABR is adding the originator, one can indirectly learn that the originator is also reachable via this ABR. well, I don't think we want to replace the Type-4 LSA functionality with the Prefix-Originator. thanks, Peter thanks, Peter Regards, Dirk On 2/13/2019 14:25, Acee Lindem (acee) wrote: This begins a two week adoption poll for the subject draft. Please send your comments to this list before 12:00 AM UTC on Thursday, February 28^th , 2019. All authors have responded to the IPR poll and there is one https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-lsr= -ospf-prefix-originator-ext It is listed multiple times but references the same CN201810650141. Thanks, Acee _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr --_000_2399f28bfe1cdd8c4ab3c007a28a69eenokiacom_ Content-Type: text/html; charset="Windows-1252" Content-ID: <957EC73B844617438D7557F5A93E432F@eurprd07.prod.outlook.com> Content-Transfer-Encoding: quoted-printable I think we are in sync, i.e.
without this draft there is no use-case for node T1 to send an
AS-scoped router info LSA without being ASBR.
Please correct if you know of an existing use-case.
Thx,
Dirk

On 2/18/2019 15:01, Peter Psenak wrote:
Hi Dirk,

On 18/02/2019 14:47 , Goethals, Dirk (Nokia - BE/Antwerp) wrote:
Hi Peter,
and you use these when you send a traffic to some= of the prefixes that
T1 originates

If T1 is not ASBR,  and this draft is not implemented, how are the nod= es
in the
other area's going to know that the prefixes belong to T1?

that is exactly what this draft is trying to address. Today there is no way= to determine the originator of the prefix in the remote area. We are addin= g that functionality in this draft.

thanks,
Peter

Dirk


On 2/18/2019 14:34, Peter Psenak wrote:
Hi Dirk,

On 18/02/2019 14:27 , Goethals, Dirk (Nokia - BE/Antwerp) wrote:
Hi Peter,
See inline DG>.
Dirk


On 2/18/2019 14:18, Peter Psenak wrote:
Hi Dirk,

On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote:
support +1

1 question:

When S1 in another area receives such LSA, it the= n can learn that
   prefix Lt1 is associated with node T1, check the ELC, ERLD, or= MSD
   value according to its necessity, and construct the right labe= l
stack
   at the ingress node S1 for the traffic destined to Lt1.

How is S1 going to know the "ELC, ERLD, or MSD" of  node T1?=
I guess, T1 will need to send an AS-scoped router info LSA?

yes, that is a possibility.


If so, should T1 be ASBR as to be able to send this AS-scoped LSA?

I would not think so.
DG> What's the use of an AS-scoped LSA, if the receiver has no way
to identify/locate the advertising router? Making T1 an ASBR will
enforce the ABR to create a T4 LSA.

if the T1 advertises some properties in it's AS-scoped LSA and you use
these when you send a traffic to some of the prefixes that T1
originates, then you don't really need to know where it is located,
you only care about its properties.





I guess it was needed before as to enforce  = the ABR to create the T4
LSAs,
so that others can learn which ABR to use to reach T4, but I guess
it's not needed anymore when this draft is implemented.

not sure how you reached the above conclusion. Can you please clarify?
DG> Since the ABR is adding the originator, one can indirectly learn that
the originator is also reachable via this ABR.

well, I don't think we want to replace the Type-4 LSA functionality
with the Prefix-Originator.

thanks,
Peter


thanks,
Peter




Regards,
Dirk


On 2/13/2019 14:25, Acee Lindem (acee) wrote:

This begins a two week adoption poll for the subject draft. Please
send your comments to this list before 12:00 AM UTC on Thursday,
February 28^th , 2019.



All authors have responded to the IPR poll and there is one
<https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft= -wang-lsr-ospf-prefix-originator-ext>

https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wan= g-lsr-ospf-prefix-originator-ext



It is listed multiple times but references the same CN201810650141.



Thanks,

Acee




_______________________________________________
Lsr mailing list
Lsr@ietf= .org
https://www.ietf.org/mailman/listinfo/lsr



_______________________________________________
Lsr mailing list
Lsr@ietf= .org
https://www.ietf.org/mailman/listinfo/lsr







--_000_2399f28bfe1cdd8c4ab3c007a28a69eenokiacom_-- From nobody Mon Feb 18 07:28:48 2019 Return-Path: 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 955DA130F18 for ; Mon, 18 Feb 2019 07:28:47 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 ChfQlfH0PNWX for ; Mon, 18 Feb 2019 07:28:46 -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 E130B130F03 for ; Mon, 18 Feb 2019 07:28:45 -0800 (PST) Received: from lhreml704-cah.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id A194F10312AC566DE8AD for ; Mon, 18 Feb 2019 15:28:43 +0000 (GMT) Received: from SJCEML702-CHM.china.huawei.com (10.208.112.38) by lhreml704-cah.china.huawei.com (10.201.108.45) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 18 Feb 2019 15:28:43 +0000 Received: from SJCEML521-MBX.china.huawei.com ([169.254.1.111]) by SJCEML702-CHM.china.huawei.com ([169.254.4.38]) with mapi id 14.03.0415.000; Mon, 18 Feb 2019 07:28:37 -0800 From: Huaimo Chen To: Peter Psenak , "Acee Lindem (acee)" , Christian Hopps , "lsr@ietf.org" Thread-Topic: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Thread-Index: AQHUuilbECC1DxP5/E+8dX31Ej0g66XL9lOggALa/AD//3qaEIAEyqeAgAs0jTCAATTTgIAGRA1A Date: Mon, 18 Feb 2019 15:28:36 +0000 Message-ID: <5316A0AB3C851246A7CA5758973207D463B56620@sjceml521-mbx.china.huawei.com> References: <5316A0AB3C851246A7CA5758973207D463B3B9D8@sjceml521-mbx.china.huawei.com> <8378287F-27B9-4663-A22B-F8A2EC6C9FC3@cisco.com> <5316A0AB3C851246A7CA5758973207D463B46315@sjceml521-mbx.china.huawei.com> <5316A0AB3C851246A7CA5758973207D463B4A6AB@sjceml521-mbx.china.huawei.com> <25021deb-2032-9fcc-4bf4-fcaaa21598b9@cisco.com> In-Reply-To: <25021deb-2032-9fcc-4bf4-fcaaa21598b9@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.212.245.64] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 15:28:47 -0000 Hi Peter, >-----Original Message----- >From: Peter Psenak [mailto:ppsenak@cisco.com]=20 >Sent: Thursday, February 14, 2019 2:30 AM >To: Huaimo Chen ; Acee Lindem (acee) ; Christian Hopps ; lsr@ietf.org >Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] > >Hi Huaimo, > >On 13/02/2019 22:50 , Huaimo Chen wrote: >> Hi Peter, >> >> My explanations/answers are in line below with prefix [HC]. >> >> -----Original Message----- >> From: Peter Psenak [mailto:ppsenak@cisco.com] >> Sent: Wednesday, February 6, 2019 4:58 AM >> To: Huaimo Chen ; Acee Lindem (acee)=20 >> ; Christian Hopps ; lsr@ietf.org >> Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] >> >> Hi Huaimo, >> >> On 03/02/2019 17:58 , Huaimo Chen wrote: >>> Hi Acee, >>> >>> >>> >>> I agree with you on keeping the signaling for two modes. The=20 >>> other parts for the distributed solution need to be removed. > >optimized flooding is not only about algorithm to calculate the flooding t= opology and the way=20 >it is distributed/computed. It is also about local rules to make sure the = flooding remains consistent.=20 >These are _independent_ of centralized/distributed modes. And it make no s= ense to specify=20 >these rules in two drafts. [HC] The rules/procedures/behaviors that are common to both the centralized= and distributed=20 solution/mode should be in one document. These common parts will be used by= both solutions/modes.=20 They are described in the two drafts and should be merged based on technica= l merits. =20 In addition to the common parts, there are still some rules/procedures/beha= viors that are=20 different from one mode to another mode. For example, the rule/procedure fo= r fault tolerance=20 to failures used in the centralized solution/mode will be different from th= at used in the distributed=20 solution/mode. In the distributed solution/mode, there will be a set of ru= les/procedures/behaviors=20 that are common to the algorithms for computing flooding topology and speci= fic to the=20 distributed solution/mode. For example, a specific procedure for scheduling= an algorithm=20 to compute a flooding topology will be used on every node for the distribut= ed solution/mode. >> >> There are no "other" parts specific for the distributed solution. >> >> [HC] Some behaviors for the distributed solution/mode are described in d= raft-li-dynamic-flooding.=20 >>For example, there are a few of places from page 27 to 30, which define t= he behaviors specific=20 >>for the distributed solution/mode. > >I strongly disagree. The fact that we say in centralized mode area leader = recomputes and in distributed=20 >mode all nodes recompute make no difference in behavior. [HC] It seems better for some of them to be more general.=20 Best Regards, Huaimo >thanks, >Peter From nobody Mon Feb 18 07:38:56 2019 Return-Path: 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 D21D7130F18 for ; Mon, 18 Feb 2019 07:38:54 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 LoWuBuUYgVyV for ; Mon, 18 Feb 2019 07:38:53 -0800 (PST) Received: from aer-iport-2.cisco.com (aer-iport-2.cisco.com [173.38.203.52]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B272F130F2C for ; Mon, 18 Feb 2019 07:38:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3551; q=dns/txt; s=iport; t=1550504333; x=1551713933; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=0BJi6e653PmiUXNd53mIFbpKvQbJSeZsUpaXPv13pK0=; b=DI0v9GSlfjno0wEUhkNsvMT5zV2uu7XYKqm7tthvRQZd2ohUDVU/5MXW h8gQJ4dVhveZDtcPCkFmrPTWHfEsiGSBU25JT4lO/uvKuGck7nhTug0Db PahT91a1V7RxofWmQaIBQN97v1xz2zOVfVo0WPs3f4eRlNsS3gvmCu5Rt o=; X-IronPort-AV: E=Sophos;i="5.58,385,1544486400"; d="scan'208";a="10204592" Received: from aer-iport-nat.cisco.com (HELO aer-core-1.cisco.com) ([173.38.203.22]) by aer-iport-2.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Feb 2019 15:38:50 +0000 Received: from [10.147.24.16] ([10.147.24.16]) by aer-core-1.cisco.com (8.15.2/8.15.2) with ESMTP id x1IFcoND021704; Mon, 18 Feb 2019 15:38:50 GMT To: Huaimo Chen , "Acee Lindem (acee)" , Christian Hopps , "lsr@ietf.org" References: <5316A0AB3C851246A7CA5758973207D463B3B9D8@sjceml521-mbx.china.huawei.com> <8378287F-27B9-4663-A22B-F8A2EC6C9FC3@cisco.com> <5316A0AB3C851246A7CA5758973207D463B46315@sjceml521-mbx.china.huawei.com> <5316A0AB3C851246A7CA5758973207D463B4A6AB@sjceml521-mbx.china.huawei.com> <25021deb-2032-9fcc-4bf4-fcaaa21598b9@cisco.com> <5316A0AB3C851246A7CA5758973207D463B56620@sjceml521-mbx.china.huawei.com> From: Peter Psenak Message-ID: <59b45885-3e06-e3d0-5c09-2cbee4cef341@cisco.com> Date: Mon, 18 Feb 2019 16:38:48 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <5316A0AB3C851246A7CA5758973207D463B56620@sjceml521-mbx.china.huawei.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.147.24.16, [10.147.24.16] X-Outbound-Node: aer-core-1.cisco.com Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 15:38:55 -0000 Hi Huaimo, On 18/02/2019 16:28 , Huaimo Chen wrote: > Hi Peter, > >> -----Original Message----- >> From: Peter Psenak [mailto:ppsenak@cisco.com] >> Sent: Thursday, February 14, 2019 2:30 AM >> To: Huaimo Chen ; Acee Lindem (acee) ; Christian Hopps ; lsr@ietf.org >> Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] >> >> Hi Huaimo, >> >> On 13/02/2019 22:50 , Huaimo Chen wrote: >>> Hi Peter, >>> >>> My explanations/answers are in line below with prefix [HC]. >>> >>> -----Original Message----- >>> From: Peter Psenak [mailto:ppsenak@cisco.com] >>> Sent: Wednesday, February 6, 2019 4:58 AM >>> To: Huaimo Chen ; Acee Lindem (acee) >>> ; Christian Hopps ; lsr@ietf.org >>> Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] >>> >>> Hi Huaimo, >>> >>> On 03/02/2019 17:58 , Huaimo Chen wrote: >>>> Hi Acee, >>>> >>>> >>>> >>>> I agree with you on keeping the signaling for two modes. The >>>> other parts for the distributed solution need to be removed. >> >> optimized flooding is not only about algorithm to calculate the flooding topology and the way >> it is distributed/computed. It is also about local rules to make sure the flooding remains consistent. >> These are _independent_ of centralized/distributed modes. And it make no sense to specify >> these rules in two drafts. > > [HC] The rules/procedures/behaviors that are common to both the centralized and distributed > solution/mode should be in one document. These common parts will be used by both solutions/modes. > They are described in the two drafts and should be merged based on technical merits. > > In addition to the common parts, there are still some rules/procedures/behaviors that are > different from one mode to another mode. For example, the rule/procedure for fault tolerance > to failures used in the centralized solution/mode will be different from that used in the distributed > solution/mode. I don't think there is any significant difference needed. And I believe these local rules for both modes should reside in a single document as most of them are applicable to both modes. > In the distributed solution/mode, there will be a set of rules/procedures/behaviors > that are common to the algorithms for computing flooding topology and specific to the > distributed solution/mode. For example, a specific procedure for scheduling an algorithm > to compute a flooding topology will be used on every node for the distributed solution/mode. scheduling a distributed versus centralized computation is not something that makes the behavior different. Sure, you can put a scheduling details for a particular algorithm in the document that describes the distributed algorithm itself. thanks, Peter > >>> >>> There are no "other" parts specific for the distributed solution. >>> >>> [HC] Some behaviors for the distributed solution/mode are described in draft-li-dynamic-flooding. >>> For example, there are a few of places from page 27 to 30, which define the behaviors specific >>> for the distributed solution/mode. >> >> I strongly disagree. The fact that we say in centralized mode area leader recomputes and in distributed >> mode all nodes recompute make no difference in behavior. > > [HC] It seems better for some of them to be more general. > > Best Regards, > Huaimo > >> thanks, >> Peter > . > From nobody Mon Feb 18 12:19:32 2019 Return-Path: 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 3486112D4EA for ; Mon, 18 Feb 2019 12:19:30 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.5 X-Spam-Level: X-Spam-Status: No, score=-14.5 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_HI=-5, 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 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 UfSDuG7IUYFx for ; Mon, 18 Feb 2019 12:19:28 -0800 (PST) Received: from rcdn-iport-9.cisco.com (rcdn-iport-9.cisco.com [173.37.86.80]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 510D412426E for ; Mon, 18 Feb 2019 12:19:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=9460; q=dns/txt; s=iport; t=1550521168; x=1551730768; h=from:to:cc:subject:date:message-id:references: in-reply-to:mime-version; bh=ccCTn+HbxpP8yU56NKN4bpa8pCI9t/1+/JHOHxr+DI8=; b=ijc9dXP350Iidg0cUXBSNts6AIZzc+sBz4S+S+esMyeUPeU/Xh+Ne4oW ROJWD2g3xfzBgk/rRgDhzAhS/Xz8Y3x+kjSWSXjQbqGuzWdC1x0Lqpmgr ns48aMD9t/MU/gSZbHYeUXD0tQKq5Otex2T/YCDNN7hcEJEKFRqyAt7ND w=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0ADAACQEmtc/4kNJK1jGQEBAQEBAQE?= =?us-ascii?q?BAQEBAQcBAQEBAQGBUQQBAQEBAQsBgQ12Z4EDJwqMFo1QJZInhXCBewsBARg?= =?us-ascii?q?BDIRHAoNwIjQJDQEDAQECAQECbRwBC4VKAQEBAQMBAWwLEAIBCBEEAQEkBAc?= =?us-ascii?q?nCxQJCAIEDgWDIAGBDmQPrTeKJwWMRBeBf4E4DBOCHi6DHgEBAgEXgX2DBII?= =?us-ascii?q?mApAmhxeLfQkChzqLGhIHgW+FVIs3gyeHGoVHjDACERSBJx84gVZwFTsqAYJ?= =?us-ascii?q?BglKITIU/QTEOjwuBHwEB?= X-IronPort-AV: E=Sophos;i="5.58,385,1544486400"; d="scan'208,217";a="435865154" Received: from alln-core-4.cisco.com ([173.36.13.137]) by rcdn-iport-9.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Feb 2019 20:19:26 +0000 Received: from XCH-ALN-005.cisco.com (xch-aln-005.cisco.com [173.36.7.15]) by alln-core-4.cisco.com (8.15.2/8.15.2) with ESMTPS id x1IKJQHL021276 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL) for ; Mon, 18 Feb 2019 20:19:26 GMT Received: from xch-rcd-004.cisco.com (173.37.102.14) by XCH-ALN-005.cisco.com (173.36.7.15) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 18 Feb 2019 14:19:26 -0600 Received: from xch-rcd-004.cisco.com ([173.37.102.14]) by XCH-RCD-004.cisco.com ([173.37.102.14]) with mapi id 15.00.1395.000; Mon, 18 Feb 2019 14:19:26 -0600 From: "Naiming Shen (naiming)" To: "lsr@ietf.org" CC: "Acee Lindem (acee)" Thread-Topic: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 Thread-Index: AQHUw5+cNf+RMjgnmUmGQ2p0NVfSb6XlQ4wAgAEoRYA= Date: Mon, 18 Feb 2019 20:19:26 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.32.173.102] Content-Type: multipart/alternative; boundary="_000_ED03B55485694EC49EA41623AF7826E2ciscocom_" MIME-Version: 1.0 X-Outbound-SMTP-Client: 173.36.7.15, xch-aln-005.cisco.com X-Outbound-Node: alln-core-4.cisco.com Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 20:19:30 -0000 --_000_ED03B55485694EC49EA41623AF7826E2ciscocom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I support. - Naiming From: Lsr > On Behalf Of = Acee Lindem (acee) Sent: Wednesday, February 13, 2019 20:26 To: lsr@ietf.org Subject: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix O= riginator" - draft-wang-lsr-ospf-prefix-originator-ext-01 This begins a two week adoption poll for the subject draft. Please send you= r comments to this list before 12:00 AM UTC on Thursday, February 28th, 201= 9. All authors have responded to the IPR poll and there is one https://datatr= acker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-lsr-ospf-prefix-o= riginator-ext It is listed multiple times but references the same CN201810650141. Thanks, Acee _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr --_000_ED03B55485694EC49EA41623AF7826E2ciscocom_ Content-Type: text/html; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable

I support.

- Naiming
 
From:<= span style=3D"font-size: 11pt;" class=3D""> Lsr <lsr-boun= ces@ietf.org> On Behalf Of Acee Linde= m (acee)
Sent: W= ednesday, February 13, 2019 20:26
To: lsr@ietf.org
Subject: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Ori= ginator" - draft-wang-lsr-ospf-prefix-originator-ext-01
 
This begins a two week adoption= poll for the subject draft. Please send your comments to this list before = 12:00 AM UTC on Thursday, February 28th, 2019.
 
All authors have responded to t= he IPR poll and there is one  https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraf= t-wang-lsr-ospf-prefix-originator-ext
It is listed multiple times but= references the same CN201810650141.
 
Thanks,
Acee
 
_______________________________________________
Lsr mailing list
Lsr@ietf.= org
https://www.ietf.org/mailman/listinfo/lsr

--_000_ED03B55485694EC49EA41623AF7826E2ciscocom_-- From nobody Mon Feb 18 17:33:58 2019 Return-Path: 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 7375C129619 for ; Mon, 18 Feb 2019 17:33:56 -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 LwMVlkHV1hQn for ; Mon, 18 Feb 2019 17:33:54 -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 1C61B1200ED for ; Mon, 18 Feb 2019 17:33:54 -0800 (PST) Received: from lhreml701-cah.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id C5D87979E1C6F7ACF7E for ; Tue, 19 Feb 2019 01:33:51 +0000 (GMT) Received: from NKGEML411-HUB.china.huawei.com (10.98.56.70) by lhreml701-cah.china.huawei.com (10.201.108.42) with Microsoft SMTP Server (TLS) id 14.3.408.0; Tue, 19 Feb 2019 01:33:51 +0000 Received: from NKGEML515-MBX.china.huawei.com ([fe80::a54a:89d2:c471:ff]) by nkgeml411-hub.china.huawei.com ([10.98.56.70]) with mapi id 14.03.0415.000; Tue, 19 Feb 2019 09:33:41 +0800 From: Zhuangshunwan To: "Acee Lindem (acee)" , "lsr@ietf.org" Thread-Topic: Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 Thread-Index: AQHUw5+cNf+RMjgnmUmGQ2p0NVfSb6Xljk8ggADP2QA= Date: Tue, 19 Feb 2019 01:33:41 +0000 Message-ID: <19AB2A007F56DB4E8257F949A2FB9858DC56BCF4@NKGEML515-MBX.china.huawei.com> References: 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18:01:58 -0800 (PST) Received: from WangajPC (unknown [89.31.125.75]) by m176115.mail.qiye.163.com (Hmail) with ESMTPA id 2D247661021; Tue, 19 Feb 2019 10:01:50 +0800 (CST) From: "Aijun Wang" To: "'Peter Psenak'" , "'Goethals, Dirk \(Nokia - BE/Antwerp\)'" , "'Acee Lindem \(acee\)'" , References: <6d8caf2b-cb62-e862-67d5-a64d75653dfb@cisco.com> In-Reply-To: <6d8caf2b-cb62-e862-67d5-a64d75653dfb@cisco.com> Date: Tue, 19 Feb 2019 10:01:48 +0800 Message-ID: <011801d4c7f7$1442f910$3cc8eb30$@org.cn> MIME-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AdTHkp8oyUhS/rhhTTq4f7/5zy8wOgAYRpUw Content-Language: zh-cn X-HM-Spam-Status: e1kIGBQJHllBS1VLV1koWUFKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZMjUtOj cyP0FLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Pj46Axw*NzkBSSoqDwsJMkMx PRUwCUhVSlVKTk5LTk9KTEpMSE5PVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlDQlVISlVKSU5VTE5ZV1kIAVlBTklKTDcG X-HM-Tid: 0a69037ce5829373kuws2d247661021 Archived-At: Subject: [Lsr] =?gb2312?b?tPC4tDogIFdvcmtpbmcgR3JvdXAgQWRvcHRpb24gUG9s?= =?gb2312?b?bCBmb3IgIk9TUEYgRXh0ZW5zaW9uIGZvciBQcmVmaXggT3JpZ2luYXRvciIg?= =?gb2312?b?LSBkcmFmdC13YW5nLWxzci1vc3BmLXByZWZpeC1vcmlnaW5hdG9yLWV4dC0w?= =?gb2312?b?MQ==?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Feb 2019 02:02:27 -0000 Hi, Peter and Dirk: Thanks for your comments and the previous explanation. For the use case related to the topology retrieval, I have the following consideration, please point out if I have some misunderstandings for the OSPF LSA procedure: 1) For prefix that is rooted at only one router, such as the loopback address, only one originator for the prefix will be added by the ABR. 2) For prefix that is connected two nodes, such as the prefix that identifies the link between them, the originator information will be = added twice for this prefix. Doing so does not the contradict with actual = physical deployment. The originator information will be added by the ABR when it receives the Router LSA, as described in section 5 of the draft.=20 When the ABR receives such information, it may not begin the SPF = calculation and can't decide which side is closer to the ABR. Best Regards. Aijun Wang Network R&D and Operation Support Department China Telecom Corporation Limited Beijing Research Institute,Beijing, = China. -----=D3=CA=BC=FE=D4=AD=BC=FE----- =B7=A2=BC=FE=C8=CB: Peter Psenak [mailto:ppsenak@cisco.com]=20 =B7=A2=CB=CD=CA=B1=BC=E4: 2019=C4=EA2=D4=C218=C8=D5 22:02 =CA=D5=BC=FE=C8=CB: Goethals, Dirk (Nokia - BE/Antwerp); Acee Lindem = (acee); lsr@ietf.org =D6=F7=CC=E2: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension = for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 On 18/02/2019 14:37 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: > I agree with Peter. > For this to work, the ABR would need to add ALL originators, while I=20 > had the impression that we only had 1 originator per prefix, i.e. the=20 > originator which was found to be the closed to the ABR and for which=20 > the ABR installed a route. above is exactly right. thanks, Peter > > Dirk > > > On 2/18/2019 14:15, Peter Psenak wrote: >> Support as coauthor, although I never really agreed with the usage of = >> the prefix originator for topology construction as described in=20 >> section 3 and 5. I would prefer that part to be removed. >> >> thanks, >> Peter >> >> >> On 13/02/2019 14:25 , Acee Lindem (acee) wrote: >>> This begins a two week adoption poll for the subject draft. Please=20 >>> send your comments to this list before 12:00 AM UTC on Thursday,=20 >>> February 28^th , 2019. >>> >>> >>> >>> All authors have responded to the IPR poll and there is one=20 >>> = >> -lsr-ospf-prefix-originator-ext>=20 >>> = https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang- >>> lsr-ospf-prefix-originator-ext >>> >>> >>> It is listed multiple times but references the same CN201810650141. >>> >>> >>> >>> Thanks, >>> >>> Acee >>> >>> >>> >>> >>> >>> _______________________________________________ >>> Lsr mailing list >>> Lsr@ietf.org >>> https://www.ietf.org/mailman/listinfo/lsr >>> >> >> _______________________________________________ >> Lsr mailing list >> Lsr@ietf.org >> https://www.ietf.org/mailman/listinfo/lsr > _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr From nobody Mon Feb 18 18:40:22 2019 Return-Path: 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 6813C130DC9 for ; Mon, 18 Feb 2019 18:40:21 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 XHVmjvSUfgjC for ; Mon, 18 Feb 2019 18:40:18 -0800 (PST) Received: from m88102.mail.qiye.163.com (m88102.mail.qiye.163.com [106.2.88.102]) by ietfa.amsl.com (Postfix) with ESMTP id 442AF12785F for ; Mon, 18 Feb 2019 18:40:17 -0800 (PST) Received: from WangajPC (unknown [89.31.125.75]) by m88102.mail.qiye.163.com (Hmail) with ESMTPA id 2F9A041001; Tue, 19 Feb 2019 10:40:10 +0800 (CST) From: "Aijun Wang" To: "'Les Ginsberg \(ginsberg\)'" , "'Acee Lindem \(acee\)'" , References: In-Reply-To: Date: Tue, 19 Feb 2019 10:40:07 +0800 Message-ID: <011901d4c7fc$6f226c80$4d674580$@org.cn> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_011A_01D4C83F.7D45AC80" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AQHUw5+cNf+RMjgnmUmGQ2p0NVfSb6Xljk8ggADZUGA= Content-Language: zh-cn X-HM-Spam-Status: e1kIGBQJHllBS1VLV1koWUFKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZMjUtOj cyP0FLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6PTI6ESo5GjlLECo*HiwjViwz Ai0KCylVSlVKTk5LTk9PS0pNS01IVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlDQlVISlVKSU5VTE5ZV1kIAVlBSkxOS0g3Bg++ X-HM-Tid: 0a69039ffd8f9865kuuu2f9a041001 Archived-At: Subject: [Lsr] =?utf-8?b?562U5aSNOiAgV29ya2luZyBHcm91cCBBZG9wdGlvbiBQb2xs?= =?utf-8?q?_for_=22OSPF_Extension_for_Prefix_Originator=22_-_draft-wang-ls?= =?utf-8?q?r-ospf-prefix-originator-ext-01?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Feb 2019 02:40:22 -0000 This is a multi-part message in MIME format. ------=_NextPart_000_011A_01D4C83F.7D45AC80 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi, Les: =20 Thanks for your comments. After the previous discussion within WG list, I had changed the = description about the inter-area topology retrieval scenario, which is = the original source of this draft that is different from RFC7794. We point out such use case can be applied where each link between = routers is assigned a unique prefix, which is very common within the = operator network(in Appendix B. =E2=80=9CSpecial consideration on = Inter-Area Topology Retrieval =E2=80=9D). =20 =20 Would you like to point out the situation that such process = can=E2=80=99t be applied and the current draft has not mentioned yet? = Or we can discuss it after its adoption. We can remove such part before its publication if the situation you = referred is common to the operator or enterprise network. =20 =20 Best Regards. =20 Aijun Wang Network R&D and Operation Support Department China Telecom Corporation Limited Beijing Research Institute,Beijing, = China. =20 =E5=8F=91=E4=BB=B6=E4=BA=BA: Les Ginsberg (ginsberg) = [mailto:ginsberg@cisco.com]=20 =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2019=E5=B9=B42=E6=9C=8818=E6=97=A5 = 21:22 =E6=94=B6=E4=BB=B6=E4=BA=BA: Acee Lindem (acee); lsr@ietf.org =E4=B8=BB=E9=A2=98: Re: [Lsr] Working Group Adoption Poll for "OSPF = Extension for Prefix Originator" - = draft-wang-lsr-ospf-prefix-originator-ext-01 =20 To the extent that the draft defines functionality equivalent to that = defined in IS-IS RFC 7794 =E2=80=93 specifically a means to advertise = the source router-id of a given advertisement =E2=80=93 it defines a = necessary and useful extension to the OSPF protocol =E2=80=93 and I = support that work. =20 However, in its current form the draft discusses use of this mechanism = for inter-area topology discovery. This idea is seriously flawed = =E2=80=93 as has been discussed extensively on the WG list. The draft also discusses uses cases related to ERLD, the direction for = which is very much uncertain at this time. =20 I therefore feel that the current content of the draft is not what I = would expect to see approved by the WG as an RFC and therefore have = significant reservations about moving forward with the existing content. =20 I do want to see a draft addressing the source router-id advertisement = gap move forward =E2=80=93 and if this draft is reduced to focus on that = then I can enthusiastically support adoption =E2=80=93 but in its = current form I cannot indicate support. =20 Les =20 =20 From: Lsr On Behalf Of Acee Lindem (acee) Sent: Wednesday, February 13, 2019 5:26 AM To: lsr@ietf.org Subject: [Lsr] Working Group Adoption Poll for "OSPF Extension for = Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 =20 This begins a two week adoption poll for the subject draft. Please send = your comments to this list before 12:00 AM UTC on Thursday, February = 28th, 2019.=20 =20 All authors have responded to the IPR poll and there is one = https://datatracker.ietf.org/ipr/search/?submit=3Ddraft = = &id=3Ddraft-wang-lsr-ospf-prefix-originator-ext It is listed multiple times but references the same CN201810650141. =20 Thanks, Acee =20 ------=_NextPart_000_011A_01D4C83F.7D45AC80 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi, = Les:

 

Thanks for your = comments.

After the previous discussion = within WG list, I had changed the description about the inter-area = topology retrieval scenario, which is the original source of this draft = that is different from RFC7794.

We point out such use case can = be applied where each link between routers is assigned a unique prefix, = which is very common within the operator network(in Appendix B. = =E2=80=9CSpecial consideration on Inter-Area Topology Retrieval = =E2=80=9D). =C2=A0=C2=A0

 

Would you like to point out the = situation that such process can=E2=80=99t be applied and the current = draft has not mentioned yet?=C2=A0 Or we can discuss it after its = adoption.

We can remove such part before = its publication if the situation you referred is common to the operator = or enterprise network.

 

 

Best = Regards.

 

Aijun = Wang

Network R&D = and Operation Support Department

China Telecom = Corporation Limited Beijing Research Institute,Beijing, = China.

 

=E5=8F=91=E4=BB= =B6=E4=BA=BA: Les Ginsberg = (ginsberg) [mailto:ginsberg@cisco.com]
=E5=8F=91=E9=80= =81=E6=97=B6=E9=97=B4: = 2019=E5=B9=B42=E6=9C=8818=E6=97=A5 21:22
=E6=94=B6=E4=BB=B6=E4=BA=BA: Acee Lindem (acee); = lsr@ietf.org
=E4=B8=BB=E9=A2=98: Re: [Lsr] Working Group = Adoption Poll for "OSPF Extension for Prefix Originator" - = draft-wang-lsr-ospf-prefix-originator-ext-01

=

 

To the extent that = the draft defines functionality equivalent to that defined in IS-IS RFC = 7794 =E2=80=93 specifically a means to advertise the source router-id of = a given advertisement =E2=80=93 it defines a necessary and useful = extension to the OSPF protocol =E2=80=93 and I support that = work.

 

However, in its current form = the draft discusses use of this mechanism for inter-area topology = discovery. This idea is seriously flawed =E2=80=93 as has been discussed = extensively on the WG list.

The draft also discusses uses = cases related to ERLD, the direction for which is very much uncertain at = this time.

 

I therefore feel that the = current content of the draft is not what I would expect to see approved = by the WG as an RFC and therefore have significant reservations about = moving forward with the existing content.

 

I do want to see a draft = addressing the source router-id advertisement gap move forward =E2=80=93 = and if this draft is reduced to focus on that then I can = enthusiastically support adoption =E2=80=93 but in its current form I = cannot indicate support.

 

   = Les

 

 

From: Lsr <lsr-bounces@ietf.org> On = Behalf Of Acee Lindem (acee)
Sent: Wednesday, February 13, = 2019 5:26 AM
To: lsr@ietf.org
Subject: [Lsr] = Working Group Adoption Poll for "OSPF Extension for Prefix = Originator" - = draft-wang-lsr-ospf-prefix-originator-ext-01

<= /div>

 

This begins a two week adoption = poll for the subject draft. Please send your comments to this list = before 12:00 AM UTC on Thursday, February 28th, 2019. =

 

All = authors have responded to the IPR poll and there is one  https://datatracker.ietf.org/i= pr/search/?submit=3Ddraft&id=3Ddraft-wang-lsr-ospf-prefix-originator-= ext

It is listed multiple times but references = the same CN201810650141.

 

Thanks,

Acee

 

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"'Acee Lindem (acee)'" , lsr@ietf.org References: <6d8caf2b-cb62-e862-67d5-a64d75653dfb@cisco.com> <011801d4c7f7$1442f910$3cc8eb30$@org.cn> From: Peter Psenak Message-ID: <7de8bc13-3cd4-847f-e994-af46dd10c949@cisco.com> Date: Tue, 19 Feb 2019 08:25:41 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <011801d4c7f7$1442f910$3cc8eb30$@org.cn> Content-Type: text/plain; charset=gbk; format=flowed Content-Transfer-Encoding: 8bit X-Outbound-SMTP-Client: 10.60.140.54, ams-ppsenak-nitro5.cisco.com X-Outbound-Node: aer-core-2.cisco.com Archived-At: Subject: Re: [Lsr] =?utf-8?b?562U5aSNOiAgV29ya2luZyBHcm91cCBBZG9wdGlvbiBQb2xs?= =?utf-8?q?_for_=22OSPF_Extension_for_Prefix_Originator=22_-_draft-wang-ls?= =?utf-8?q?r-ospf-prefix-originator-ext-01?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Feb 2019 07:25:47 -0000 Aijun, On 19/02/2019 03:01 , Aijun Wang wrote: > Hi, Peter and Dirk: > > Thanks for your comments and the previous explanation. > > For the use case related to the topology retrieval, I have the following > consideration, please point out if I have some misunderstandings for the > OSPF LSA procedure: > 1) For prefix that is rooted at only one router, such as the loopback > address, only one originator for the prefix will be added by the ABR. > 2) For prefix that is connected two nodes, such as the prefix that > identifies the link between them, the originator information will be added > twice for this prefix. Doing so does not the contradict with actual physical > deployment. what you are proposing is to list all prefix originators, regardless of which one is contributing to best path to the prefix on the ABR. I personally do not like that idea. > > The originator information will be added by the ABR when it receives the > Router LSA, as described in section 5 of the draft. > When the ABR receives such information, it may not begin the SPF calculation > and can't decide which side is closer to the ABR. ABR MUST run SPF and determine whether the prefix is reachable and what is the best path metric to reach it in the original area. Such information is used when generating Type-3 LSA to other connected areas. thanks, Peter > > > Best Regards. > > Aijun Wang > Network R&D and Operation Support Department > China Telecom Corporation Limited Beijing Research Institute,Beijing, China. > > -----ÓʼþÔ­¼þ----- > ·¢¼þÈË: Peter Psenak [mailto:ppsenak@cisco.com] > ·¢ËÍʱ¼ä: 2019Äê2ÔÂ18ÈÕ 22:02 > ÊÕ¼þÈË: Goethals, Dirk (Nokia - BE/Antwerp); Acee Lindem (acee); > lsr@ietf.org > Ö÷Ìâ: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix > Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > > On 18/02/2019 14:37 , Goethals, Dirk (Nokia - BE/Antwerp) wrote: >> I agree with Peter. >> For this to work, the ABR would need to add ALL originators, while I >> had the impression that we only had 1 originator per prefix, i.e. the >> originator which was found to be the closed to the ABR and for which >> the ABR installed a route. > > above is exactly right. > > thanks, > Peter > >> >> Dirk >> >> >> On 2/18/2019 14:15, Peter Psenak wrote: >>> Support as coauthor, although I never really agreed with the usage of >>> the prefix originator for topology construction as described in >>> section 3 and 5. I would prefer that part to be removed. >>> >>> thanks, >>> Peter >>> >>> >>> On 13/02/2019 14:25 , Acee Lindem (acee) wrote: >>>> This begins a two week adoption poll for the subject draft. Please >>>> send your comments to this list before 12:00 AM UTC on Thursday, >>>> February 28^th , 2019. >>>> >>>> >>>> >>>> All authors have responded to the IPR poll and there is one >>>> >>> -lsr-ospf-prefix-originator-ext> >>>> https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-wang- >>>> lsr-ospf-prefix-originator-ext >>>> >>>> >>>> It is listed multiple times but references the same CN201810650141. >>>> >>>> >>>> >>>> Thanks, >>>> >>>> Acee >>>> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> Lsr mailing list >>>> Lsr@ietf.org >>>> https://www.ietf.org/mailman/listinfo/lsr >>>> >>> >>> _______________________________________________ >>> Lsr mailing list >>> Lsr@ietf.org >>> https://www.ietf.org/mailman/listinfo/lsr >> > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > > . > From nobody Tue Feb 19 07:18:03 2019 Return-Path: X-Original-To: lsr@ietfa.amsl.com 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PC9vOnA+PC9zcGFuPjwvcD4NCjxwIGNsYXNzPSJNc29Ob3JtYWwiPjxzcGFuIGxhbmc9IkVOLVVT IiBzdHlsZT0iZm9udC1zaXplOjExLjBwdCI+QWNlZTxvOnA+PC9vOnA+PC9zcGFuPjwvcD4NCjxw IGNsYXNzPSJNc29Ob3JtYWwiPjxzcGFuIGxhbmc9IkVOLVVTIiBzdHlsZT0iZm9udC1zaXplOjEx LjBwdCI+PG86cD4mbmJzcDs8L286cD48L3NwYW4+PC9wPg0KPC9kaXY+DQo8L2Rpdj4NCjwvYm9k eT4NCjwvaHRtbD4NCg== --_000_76CD132C3ADEF848BD84D028D243C927C3414781NKGEML515MBXchi_-- From nobody Wed Feb 20 17:29:25 2019 Return-Path: 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 0AF5C12F295 for ; Wed, 20 Feb 2019 17:29:24 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 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Received: from SJCEML702-CHM.china.huawei.com (10.208.112.38) by lhreml706-chm.china.huawei.com (10.201.108.55) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA_P256) id 15.1.1591.10 via Frontend Transport; Thu, 21 Feb 2019 01:28:07 +0000 Received: from SJCEML521-MBX.china.huawei.com ([169.254.1.111]) by SJCEML702-CHM.china.huawei.com ([169.254.4.38]) with mapi id 14.03.0415.000; Wed, 20 Feb 2019 17:28:02 -0800 From: Huaimo Chen To: Peter Psenak , "Acee Lindem (acee)" , Christian Hopps , "lsr@ietf.org" Thread-Topic: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Thread-Index: AQHUuilbECC1DxP5/E+8dX31Ej0g66XL9lOggALa/AD//3qaEIAEyqeAgAs0jTCAATTTgIAGRA1AgACN4ACAA0GHUA== Date: Thu, 21 Feb 2019 01:28:02 +0000 Message-ID: <5316A0AB3C851246A7CA5758973207D463B57ED6@sjceml521-mbx.china.huawei.com> References: <5316A0AB3C851246A7CA5758973207D463B3B9D8@sjceml521-mbx.china.huawei.com> <8378287F-27B9-4663-A22B-F8A2EC6C9FC3@cisco.com> <5316A0AB3C851246A7CA5758973207D463B46315@sjceml521-mbx.china.huawei.com> <5316A0AB3C851246A7CA5758973207D463B4A6AB@sjceml521-mbx.china.huawei.com> <25021deb-2032-9fcc-4bf4-fcaaa21598b9@cisco.com> <5316A0AB3C851246A7CA5758973207D463B56620@sjceml521-mbx.china.huawei.com> <59b45885-3e06-e3d0-5c09-2cbee4cef341@cisco.com> In-Reply-To: <59b45885-3e06-e3d0-5c09-2cbee4cef341@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.212.245.49] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Feb 2019 01:29:24 -0000 Hi Peter, >-----Original Message----- >From: Peter Psenak [mailto:ppsenak@cisco.com]=20 >Sent: Monday, February 18, 2019 10:39 AM >To: Huaimo Chen ; Acee Lindem (acee) ; Christian=20 >Hopps ; lsr@ietf.org >Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] > >Hi Huaimo, > >On 18/02/2019 16:28 , Huaimo Chen wrote: >> Hi Peter, >> >>> -----Original Message----- >>> From: Peter Psenak [mailto:ppsenak@cisco.com] >>> Sent: Thursday, February 14, 2019 2:30 AM >>> To: Huaimo Chen ; Acee Lindem (acee)=20 >>> ; Christian Hopps ; lsr@ietf.org >>> Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft=20 >>> Redux] >>> >>> Hi Huaimo, >>> >>> On 13/02/2019 22:50 , Huaimo Chen wrote: >>>> Hi Peter, >>>> >>>> My explanations/answers are in line below with prefix [HC]. >>>> >>>> -----Original Message----- >>>> From: Peter Psenak [mailto:ppsenak@cisco.com] >>>> Sent: Wednesday, February 6, 2019 4:58 AM >>>> To: Huaimo Chen ; Acee Lindem (acee)=20 >>>> ; Christian Hopps ; lsr@ietf.org >>>> Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft=20 >>>> Redux] >>>> >>>> Hi Huaimo, >>>> >>>> On 03/02/2019 17:58 , Huaimo Chen wrote: >>>>> Hi Acee, >>>>> >>>>> >>>>> >>>>> I agree with you on keeping the signaling for two modes. The=20 >>>>> other parts for the distributed solution need to be removed. >>> >>> optimized flooding is not only about algorithm to calculate the=20 >>> flooding topology and the way it is distributed/computed. It is also ab= out local rules to make sure the flooding remains consistent. >>> These are _independent_ of centralized/distributed modes. And it make=20 >>> no sense to specify these rules in two drafts. >> >> [HC] The rules/procedures/behaviors that are common to both the=20 >> centralized and distributed solution/mode should be in one document. The= se common parts will be used by both solutions/modes. >> They are described in the two drafts and should be merged based on techn= ical merits. >> >> In addition to the common parts, there are still some=20 >> rules/procedures/behaviors that are different from one mode to another=20 >> mode. For example, the rule/procedure for fault tolerance to failures=20 >> used in the centralized solution/mode will be different from that used i= n the distributed solution/mode. >I don't think there is any significant difference needed. And I believe th= ese local rules for both=20 >modes should reside in a single document as most of them are applicable to= both modes. The way in which the flooding topology converges in the centralized mode/so= lution is different from=20 that in the distributed mode/solution. In the former, after receiving the l= ink states for the failures, the leader computes a new flooding topology and floods it to every other no= de, which receives and installs the new flooding topology. The working load on every non leade= r node is light. It has more=20 processing power for a procedure/method for fault tolerance to failures. However, in the latter, every node computes and installs a new flooding top= ology after receiving=20 the link states for the failures. It has less processing power for a proced= ure/method for fault tolerance. It is better to let each of the two modes use its own procedure/method for = fault tolerance to failures, which is more appropriate to it. >> In the distributed solution/mode, there will be a set of=20 >> rules/procedures/behaviors that are common to the algorithms for=20 >> computing flooding topology and specific to the distributed=20 >> solution/mode. For example, a specific procedure for scheduling an algor= ithm to compute a flooding topology will be used on every node for the dist= ributed solution/mode. >scheduling a distributed versus centralized computation is not something t= hat makes the=20 >behavior different. Sure, you can put a scheduling details for a particula= r algorithm in the=20 >document that describes the distributed algorithm itself. In the centralized solution/mode, scheduling an algorithm to compute floodi= ng topology happens=20 only on the leader, and then on the backup leader after the leader fails. T= he parameters for=20 scheduling on the leader may be different from those for scheduling on the = backup leader.=20 However, in the distributed solution/mode, scheduling an algorithm to compu= te flooding topology occurs on every node. The parameters for scheduling on all the nodes need t= o be the same.=20 The procedure for achieving this is specific to the distributed mode/soluti= on. If every particular algorithm for computing flooding topology in the distri= buted solution/mode describes a procedure for scheduling in details itself, there will be dupli= cated descriptions of=20 the same procedure in multiple algorithms, one of which is selected to comp= ute flooding topology on every node. It is better for the same scheduling procedure for = multiple algorithms=20 to be described in one document. =20 Best Regards, Huaimo >thanks, >Peter From nobody Wed Feb 20 21:32:05 2019 Return-Path: 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 0560812D4E6 for ; Wed, 20 Feb 2019 21:32:03 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 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_PASS=-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 vBDODUw969aC for ; Wed, 20 Feb 2019 21:32:00 -0800 (PST) Received: from mail-pf1-x42b.google.com (mail-pf1-x42b.google.com [IPv6:2607:f8b0:4864:20::42b]) (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 6315D12D4F2 for ; Wed, 20 Feb 2019 21:32:00 -0800 (PST) Received: by mail-pf1-x42b.google.com with SMTP id n22so13180546pfa.3 for ; Wed, 20 Feb 2019 21:32:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=gKBOkgtWxL8TSwUuPKq3nM96Vvg7+AopezHxjXkKmCI=; b=dQlCNJuuYP+8W9WiSyZe+wYRn+PJF8jbDkkoVCNorzdBNoJwImrV7DhqNVR0dLdQit Z5pdk70nttgxECIKf1XNdcoOGFd/EcYr2ZCg3092q0hZjFjX1YftNHZf8QoiapK2WArk mwo/kbPjqImoDkXdFSoO50J+Fukiyg4ZXmMJiFLtcWLef7PZUTmyE9Hzt51vWg8xI1za 04QTtiljCO+FMK/DTVj9BrAm4UYPwwwcmjhYkR2mG/ZyaaSqANb9rBGmVCbNDw8Q9wCb V1nVO4UOw+yMnywbI3l5hp+TYZPcouVJkJI2UQ4LkxX3iY+LQe2s1RNetdI8l393TesM qKFg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=gKBOkgtWxL8TSwUuPKq3nM96Vvg7+AopezHxjXkKmCI=; b=AXX6FRkaC/2dHjL7Lv2aQqiXCYBGmcXkBh9IipOYHQAN8JRaGcpLzfPkeqYeSHX4VY 4S9kYvEkumg2z9bCjcZftI3pgmhu7iynR//7/jkrbtEThs1GutWuN49A/mYRKmth8trk aJRCjKtOBBghUA3D8YTauxaSOH53V2dPIEWfI7i2h+lrulDOoGo5san+En8xiiLiNyyH /hL0o+pTNwl+PjrmSMcfQ2MApfBMh5JAJu+g58lJSwlfC8iZOQ1NO7hyBsdYjNFLOpLf x3lMX3tGJypg1YVEWUGPqUvcq769Uqe3B1oYRzR4dyIoXXefm+vohXZzJtUj866iA4vv YI+w== X-Gm-Message-State: AHQUAuZdEcL6ck/1DrZ2hF5fnqWC+J7KK+fba/U0/eGj++2nl1dugbOG hNx4yk6+lkbjf9Jt+MFn7Oo= X-Google-Smtp-Source: AHgI3IbGE+jQSjPm0F/y5Vm4aEos7JuM6Dh4MJfYyIHmYiomtsYoqtUQI8hH5o//TWiCdjU7a3/bhA== X-Received: by 2002:a63:d449:: with SMTP id i9mr16321365pgj.449.1550727119733; Wed, 20 Feb 2019 21:31:59 -0800 (PST) Received: from [10.95.90.107] ([162.210.129.5]) by smtp.gmail.com with ESMTPSA id l2sm7675902pgj.64.2019.02.20.21.31.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 20 Feb 2019 21:31:58 -0800 (PST) From: Tony Li Message-Id: Content-Type: multipart/alternative; boundary="Apple-Mail=_DE68F54B-BA76-44D8-B830-62942531B97F" Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Date: Wed, 20 Feb 2019 21:31:56 -0800 In-Reply-To: <5316A0AB3C851246A7CA5758973207D463B57ED6@sjceml521-mbx.china.huawei.com> Cc: Peter Psenak , "Acee Lindem (acee)" , Christian Hopps , "lsr@ietf.org" To: Huaimo Chen References: <5316A0AB3C851246A7CA5758973207D463B3B9D8@sjceml521-mbx.china.huawei.com> <8378287F-27B9-4663-A22B-F8A2EC6C9FC3@cisco.com> <5316A0AB3C851246A7CA5758973207D463B46315@sjceml521-mbx.china.huawei.com> <5316A0AB3C851246A7CA5758973207D463B4A6AB@sjceml521-mbx.china.huawei.com> <25021deb-2032-9fcc-4bf4-fcaaa21598b9@cisco.com> <5316A0AB3C851246A7CA5758973207D463B56620@sjceml521-mbx.china.huawei.com> <59b45885-3e06-e3d0-5c09-2cbee4cef341@cisco.com> <5316A0AB3C851246A7CA5758973207D463B57ED6@sjceml521-mbx.china.huawei.com> X-Mailer: Apple Mail (2.3445.102.3) Archived-At: Subject: Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Feb 2019 05:32:03 -0000 --Apple-Mail=_DE68F54B-BA76-44D8-B830-62942531B97F Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Huaimo, > The way in which the flooding topology converges in the centralized = mode/solution is different from=20 > that in the distributed mode/solution. In the former, after receiving = the link states for the failures, > the leader computes a new flooding topology and floods it to every = other node, which receives > and installs the new flooding topology. The working load on every non = leader node is light. It has more=20 > processing power for a procedure/method for fault tolerance to = failures. > However, in the latter, every node computes and installs a new = flooding topology after receiving=20 > the link states for the failures. It has less processing power for a = procedure/method for fault tolerance. > It is better to let each of the two modes use its own procedure/method = for fault tolerance to failures, > which is more appropriate to it. It=E2=80=99s true that a distributed solution will call more on an = average node than a centralized solution will. However, that is not the = steady state for either. In the=20 steady state, the flooding topology has been computed and has been put = in place already. Thus, the impact of the topology computation at the = time of the=20 topology change is nil.=20 In addition, the amount of work to temporarily amend the flooding = topology should also be minimal, and by that, I mean O(log n). The = decision should only be whether or not to temporarily add a link to flooding, and the only = information that a node needs to do that is to determine if the node is = already on the flooding topology. That should be a lookup in a tree that represents the = nodes on the topology, and that lookup should be O(log n). In other = words, it=E2=80=99s fast and efficient and not a significant drain on resources. > In the centralized solution/mode, scheduling an algorithm to compute = flooding topology happens=20 > only on the leader, and then on the backup leader after the leader = fails. The parameters for=20 > scheduling on the leader may be different from those for scheduling on = the backup leader.=20 > However, in the distributed solution/mode, scheduling an algorithm to = compute flooding topology > occurs on every node. The parameters for scheduling on all the nodes = need to be the same.=20 Actually, that=E2=80=99s not true. An implementation is free to do its = own internal scheduling however it chooses, regardless of whether it = implements a distributed or centralized implementation. > The procedure for achieving this is specific to the distributed = mode/solution. More accurately, it is specific to a given implementation. > If every particular algorithm for computing flooding topology in the = distributed solution/mode > describes a procedure for scheduling in details itself, there will be = duplicated descriptions of=20 > the same procedure in multiple algorithms, one of which is selected to = compute flooding > topology on every node. It is better for the same scheduling procedure = for multiple algorithms=20 > to be described in one document. =20 Actually, since the IETF should not be specifying the details of = scheduling as it is an implementation detail, as they do not affect the = behavior of the protocol, it should not be discussed in any documents. Regards, Tony --Apple-Mail=_DE68F54B-BA76-44D8-B830-62942531B97F Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8

Hi Huaimo,


The way in = which the flooding topology converges in the centralized mode/solution = is different from 
that in the distributed = mode/solution. In the former, after receiving the link states for the = failures,
the leader = computes a new flooding topology and floods it to every other node, = which receives
and installs the new flooding topology. The working load on = every non leader node is light. It has more 
processing power for a = procedure/method for fault tolerance to failures.
However, in the latter, every = node computes and installs a new flooding topology after receiving 
the link states for the = failures. It has less processing power for a procedure/method for fault = tolerance.
It is better = to let each of the two modes use its own procedure/method for fault = tolerance to failures,
which is more appropriate to it.


It=E2=80=99s true that a distributed solution will call = more on an average node than a centralized solution will. However, that = is not the steady state for either. In the 
steady state, = the flooding topology has been computed and has been put in place = already. Thus, the impact of the topology computation at the time of = the 
topology change is nil. 

In addition, the amount of work to temporarily = amend the flooding topology should also be minimal, and by that, I mean = O(log n).  The decision should only
be whether or not to = temporarily add a link to flooding, and the only information that a node = needs to do that is to determine if the node is already on = the
flooding topology. That should be a lookup in a tree that = represents the nodes on the topology, and that lookup should be O(log = n). In other words, it=E2=80=99s fast
and efficient and not a = significant drain on resources.


In the = centralized solution/mode, scheduling an algorithm to compute flooding = topology happens 
only on the leader, and then on = the backup leader after the leader fails. The parameters for 
scheduling on the leader may be = different from those for scheduling on the backup leader. 
However, in the distributed = solution/mode, scheduling an algorithm to compute flooding = topology
occurs on = every node. The parameters for scheduling on all the nodes need to be = the same. 


Actually, that=E2=80=99s not true.  An = implementation is free to do its own internal scheduling however it = chooses, regardless of whether it implements a
distributed or = centralized implementation.


The procedure for achieving this = is specific to the distributed mode/solution.


More accurately, it is specific to a given = implementation.


If every particular algorithm = for computing flooding topology in the distributed = solution/mode
describes a = procedure for scheduling in details itself, there will be duplicated = descriptions of 
the same procedure in multiple = algorithms, one of which is selected to compute flooding
topology on every node. It is = better for the same scheduling procedure for multiple algorithms 
to be described in one document. =  


Actually, since the IETF = should not be specifying the details of scheduling as it is an = implementation detail, as they do not affect the behavior of the = protocol, it should not be
discussed in any = documents.

Regards,
Tony

= --Apple-Mail=_DE68F54B-BA76-44D8-B830-62942531B97F-- From nobody Thu Feb 21 07:41:51 2019 Return-Path: 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 8053F129284 for ; Thu, 21 Feb 2019 07:41:49 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.711 X-Spam-Level: X-Spam-Status: No, score=-0.711 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, HTTPS_HTTP_MISMATCH=1.989, RCVD_IN_DNSWL_LOW=-0.7, 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=juniper.net 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 E1hNRlM5IvxP for ; Thu, 21 Feb 2019 07:41:45 -0800 (PST) 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15:29:02 -0800 (PST) Received: from m176115.mail.qiye.163.com (m176115.mail.qiye.163.com [59.111.176.115]) by ietfa.amsl.com (Postfix) with ESMTP id 80D38131294 for ; Thu, 21 Feb 2019 15:29:00 -0800 (PST) Received: from [192.168.124.12] (unknown [111.194.48.247]) by m176115.mail.qiye.163.com (Hmail) with ESMTPA id 4625B661111; Fri, 22 Feb 2019 07:28:53 +0800 (CST) Content-Type: multipart/alternative; boundary=Apple-Mail-163A6673-F0E5-4846-9853-95E7BCF1555D Mime-Version: 1.0 (1.0) From: Aijun Wang X-Mailer: iPhone Mail (16D57) In-Reply-To: Date: Fri, 22 Feb 2019 07:26:54 +0800 Cc: "Les Ginsberg (ginsberg)" , "Acee Lindem (acee)" , "lsr@ietf.org" Content-Transfer-Encoding: 7bit Message-Id: <3B426740-F8DF-4E2B-8322-98E2EF2ACD31@tsinghua.org.cn> References: To: John E Drake X-HM-Spam-Status: e1kIGBQJHllBS1VLV1koWUFKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZMjUtOj cyP0FLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Nz46Mjo6CjlMEC82Szo4ORM1 HDEaFDFVSlVKTk5LTEJKTEhCTkNKVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlKSkpVSkJPVU9DVUlPTFlXWQgBWUFKTkhITDcG X-HM-Tid: 0a691263f0299373kuws4625b661111 Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Feb 2019 23:29:06 -0000 --Apple-Mail-163A6673-F0E5-4846-9853-95E7BCF1555D Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, John: Thanks for your review and comments. The use cases and original thought in this draft are different from that de= scribed in RFC7794. We have pointed out that RFC7794 has the similar extensi= on for ISIS and indicated that the extension for ISIS can also be used in th= e use cases described in our draft. What=E2=80=99 other content do you think= it is needed further? RFC 7770 solves mainly the advertising of router=E2=80=99s capabilities, it= shouldn=E2=80=99t be used for transmitting the information about the prefix= es. Best Regards. Aijun Wang China Telecom > On Feb 21, 2019, at 23:41, John E Drake wrote: >=20 > Hi, > =20 > I agree with Les. I think the draft should be recast to indicate that it i= s providing OSPF parity with RFC 7794. > Can=E2=80=99t topology discovery be done using RFC 7770? > =20 > Yours Irrespectively, > =20 > John > =20 > From: Lsr On Behalf Of Les Ginsberg (ginsberg) > Sent: Monday, February 18, 2019 8:22 AM > To: Acee Lindem (acee) ; lsr@ietf.org > Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Pre= fix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > =20 > To the extent that the draft defines functionality equivalent to that defi= ned in IS-IS RFC 7794 =E2=80=93 specifically a means to advertise the source= router-id of a given advertisement =E2=80=93 it defines a necessary and use= ful extension to the OSPF protocol =E2=80=93 and I support that work. > =20 > However, in its current form the draft discusses use of this mechanism for= inter-area topology discovery. This idea is seriously flawed =E2=80=93 as h= as been discussed extensively on the WG list. > The draft also discusses uses cases related to ERLD, the direction for whi= ch is very much uncertain at this time. > =20 > I therefore feel that the current content of the draft is not what I would= expect to see approved by the WG as an RFC and therefore have significant r= eservations about moving forward with the existing content. > =20 > I do want to see a draft addressing the source router-id advertisement gap= move forward =E2=80=93 and if this draft is reduced to focus on that then I= can enthusiastically support adoption =E2=80=93 but in its current form I c= annot indicate support. > =20 > Les > =20 > =20 > From: Lsr On Behalf Of Acee Lindem (acee) > Sent: Wednesday, February 13, 2019 5:26 AM > To: lsr@ietf.org > Subject: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix O= riginator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > =20 > This begins a two week adoption poll for the subject draft. Please send yo= ur comments to this list before 12:00 AM UTC on Thursday, February 28th, 201= 9. > =20 > All authors have responded to the IPR poll and there is one https://datat= racker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-lsr-ospf-prefix-o= riginator-ext > It is listed multiple times but references the same CN201810650141. > =20 > Thanks, > Acee > =20 > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr --Apple-Mail-163A6673-F0E5-4846-9853-95E7BCF1555D Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, John:

Thanks for you= r review and comments.
The use cases and original thought in this d= raft are different from that  described in RFC7794. We have pointed out= that RFC7794 has the similar extension for ISIS and indicated that the exte= nsion for ISIS can also be used in the use cases described in our draft. Wha= t=E2=80=99 other content do you think it is needed further?
RFC 77= 70  solves mainly the advertising of router=E2=80=99s capabilities, it s= houldn=E2=80=99t be used for transmitting the information about the prefixes= .

Best Regards.


Aijun Wang
China Telecom

On Feb 21, 2019, at 23:41, John E Drake <jdrake=3D40juniper.net@dmarc.ietf.org= > wrote:

Hi,

 

I agree with Les.&nb= sp; I think the draft should be recast to indicate that it is providing OSPF= parity with RFC 7794.

Can=E2=80=99t topolo= gy discovery be done using RFC 7770?

 

Yours Irrespectively= ,

 

John

 

From:<= span style=3D"font-size:11.0pt"> Lsr <lsr-bounces@ietf.org> On Behalf Of Les Ginsberg (ginsberg)
Sent: Monday, February 18, 2019 8:22 AM
To: Acee Lindem (acee) <acee@cis= co.com>; lsr@ietf.org
Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension fo= r Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01

 

To the= extent that the draft defines functionality equivalent to that defined in I= S-IS RFC 7794 =E2=80=93 specifically a means to advertise the source router-= id of a given advertisement =E2=80=93 it defines a necessary and useful extension to the OSPF protocol =E2=80=93 and I suppo= rt that work.

&= nbsp;

Howeve= r, in its current form the draft discusses use of this mechanism for inter-a= rea topology discovery. This idea is seriously flawed =E2=80=93 as has been d= iscussed extensively on the WG list.

The dr= aft also discusses uses cases related to ERLD, the direction for which is ve= ry much uncertain at this time.

&= nbsp;

I ther= efore feel that the current content of the draft is not what I would expect t= o see approved by the WG as an RFC and therefore have significant reservatio= ns about moving forward with the existing content.

&= nbsp;

I do w= ant to see a draft addressing the source router-id advertisement gap move fo= rward =E2=80=93 and if this draft is reduced to focus on that then I can ent= husiastically support adoption =E2=80=93 but in its current form I cannot indicate support.

&= nbsp;

 =   Les

&= nbsp;

&= nbsp;

From:<= span style=3D"font-size:11.0pt"> Lsr <lsr-bounces@ietf.org> On Behalf Of Acee Lindem (acee)
Sent: Wednesday, February 13, 2019 5:26 AM
To: lsr@ietf.org
Subject: [Lsr] Working Group Adoption Poll for "OSPF Extension for Pr= efix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01

 

This begins a two we= ek adoption poll for the subject draft. Please send your comments to this li= st before 12:00 AM UTC on Thursday, February 28th, 2019.

 

All authors have res= ponded to the IPR poll and there is one  = https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-= lsr-ospf-prefix-originator-ext

It is listed multipl= e times but references the same CN201810650141.

 

Thanks,

Acee

 

________= _______________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org= /mailman/listinfo/lsr
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AHQUAualgbvMNBK5RywKqTVPOFIT269bHVdpAQdrqMOoN9Rj0dxDLhK/ gFPda51APCy2tlzGGtF2kawbC619NJcJg9wKYPo= X-Google-Smtp-Source: AHgI3IauEUQhiu+JthzrxGKFbObhKYRtotc2p3x3/ToIoCsRTOZ5Ti2O2fuY3o36CeB0kU97eq6787U10ipo7keT+Zc= X-Received: by 2002:a50:d8ce:: with SMTP id y14mr1892767edj.101.1550817817105; Thu, 21 Feb 2019 22:43:37 -0800 (PST) MIME-Version: 1.0 References: <3B426740-F8DF-4E2B-8322-98E2EF2ACD31@tsinghua.org.cn> In-Reply-To: From: Tony Przygienda Date: Thu, 21 Feb 2019 22:42:59 -0800 Message-ID: To: "Les Ginsberg (ginsberg)" Cc: Aijun Wang , John E Drake , "lsr@ietf.org" , "Acee Lindem (acee)" Content-Type: multipart/alternative; boundary="0000000000001998ba058275e919" Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 06:43:42 -0000 --0000000000001998ba058275e919 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I read it during some mildly boring phone conference here ;-) I do (unsuprisingly) tend to agree with Mr. Ginsberg here. Putting originator on prefix, well, ok, I understand how people got there instead of having a clean router LSA with its loopback hanging of it (which would be IMO the right abstraction but alas, IP decided originally that interfaces have addresses and routers, well, don't. Overall not the best architecture remedied by loopback hacks since forever then. I digress ...). So putting router-id on type-3 loopback serves its purpose of "how do I get to this node across topology abstractions [areas]". Allows central entities (controllers and such) to get to every node in the topology without violating abstractions (too much ;-). Cleaner solutions would be thinkable but more complex obviously. But coming back to this draft, alas, trying to build the whole topology distribution tails-up, i.e. redistribute topology view behind prefixes which are really leafs-of-topology strikes me just another confused slippery slope just like re-encoding one protocol's native formats into another protocol :-P ... And if the authors suffer from mild bout of over-creativity I suggest to split that part into an informational draft ... --- tony On Thu, Feb 21, 2019 at 9:56 PM Les Ginsberg (ginsberg) wrote: > Aijun =E2=80=93 > > > > Controllers already have a reliable way to learn topology information for > all areas. > > There is therefore no need for the topology discovery solution you propos= e > =E2=80=93 and all the more so because your proposal does not work in all = cases and > you have no definition of how a controller could tell when the informatio= n > can be trusted and when it can=E2=80=99t. > > > > The only thing which is needed is to define a way to identify the source > router-id of prefixes which are leaked between areas =E2=80=93 which is w= hat I have > asked you to limit the draft to do. > > > > The mention of ELC/ERLD/MSD in your draft is spurious since you actually > haven=E2=80=99t defined any way to advertise that information between are= as (nor do > I want you to do so). It should be removed. > > > > I say again, this draft in its current form is not ready to be adopted. > > > > Les > > > > > > *From:* Aijun Wang > *Sent:* Thursday, February 21, 2019 3:27 PM > *To:* John E Drake > *Cc:* Les Ginsberg (ginsberg) ; Acee Lindem (acee) < > acee@cisco.com>; lsr@ietf.org > *Subject:* Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for > Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > > > > Hi, John: > > > > Thanks for your review and comments. > > The use cases and original thought in this draft are different from that > described in RFC7794. We have pointed out that RFC7794 has the similar > extension for ISIS and indicated that the extension for ISIS can also be > used in the use cases described in our draft. What=E2=80=99 other content= do you > think it is needed further? > > RFC 7770 solves mainly the advertising of router=E2=80=99s capabilities,= it > shouldn=E2=80=99t be used for transmitting the information about the pref= ixes. > > > > Best Regards. > > > > Aijun Wang > > China Telecom > > > On Feb 21, 2019, at 23:41, John E Drake < > jdrake=3D40juniper.net@dmarc.ietf.org> wrote: > > Hi, > > > > I agree with Les. I think the draft should be recast to indicate that it > is providing OSPF parity with RFC 7794. > > Can=E2=80=99t topology discovery be done using RFC 7770? > > > > Yours Irrespectively, > > > > John > > > > *From:* Lsr *On Behalf Of *Les Ginsberg (ginsberg) > *Sent:* Monday, February 18, 2019 8:22 AM > *To:* Acee Lindem (acee) ; lsr@ietf.org > *Subject:* Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for > Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > > > > To the extent that the draft defines functionality equivalent to that > defined in IS-IS RFC 7794 =E2=80=93 specifically a means to advertise the= source > router-id of a given advertisement =E2=80=93 it defines a necessary and u= seful > extension to the OSPF protocol =E2=80=93 and I support that work. > > > > However, in its current form the draft discusses use of this mechanism fo= r > inter-area topology discovery. This idea is seriously flawed =E2=80=93 as= has been > discussed extensively on the WG list. > > The draft also discusses uses cases related to ERLD, the direction for > which is very much uncertain at this time. > > > > I therefore feel that the current content of the draft is not what I woul= d > expect to see approved by the WG as an RFC and therefore have significant > reservations about moving forward with the existing content. > > > > I do want to see a draft addressing the source router-id advertisement ga= p > move forward =E2=80=93 and if this draft is reduced to focus on that then= I can > enthusiastically support adoption =E2=80=93 but in its current form I can= not > indicate support. > > > > Les > > > > > > *From:* Lsr *On Behalf Of *Acee Lindem (acee) > *Sent:* Wednesday, February 13, 2019 5:26 AM > *To:* lsr@ietf.org > *Subject:* [Lsr] Working Group Adoption Poll for "OSPF Extension for > Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > > > > This begins a two week adoption poll for the subject draft. Please send > your comments to this list before 12:00 AM UTC on Thursday, February 28th= , > 2019. > > > > All authors have responded to the IPR poll and there is one > https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-l= sr-ospf-prefix-originator-ext > > > It is listed multiple times but references the same CN201810650141. > > > > Thanks, > > Acee > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > --0000000000001998ba058275e919 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I read it during some mildly boring phone conference = here ;-) I do (unsuprisingly) tend to agree with Mr. Ginsberg here. Putting= originator on prefix, well, ok, I understand how people got there instead = of having a clean router LSA with its loopback hanging of it (which would b= e IMO the right abstraction but alas, IP decided originally that interfaces= have addresses and routers, well, don't. Overall not the best architec= ture remedied by loopback hacks since forever then. I digress ...). So putt= ing router-id on type-3 loopback serves its purpose of "how do I get t= o this node across topology abstractions [areas]". Allows central enti= ties (controllers and such) to get to every node in the topology without vi= olating abstractions (too much ;-). Cleaner solutions would be thinkable bu= t more complex obviously. But coming back to this draft, alas, trying to bu= ild the whole topology distribution tails-up, i.e. redistribute topology vi= ew behind prefixes which are really leafs-of-topology strikes me just anoth= er confused slippery slope just like re-encoding one protocol's native = formats into another protocol :-P ... And if the authors suffer from mild b= out of over-creativity I suggest to split that part into an informational d= raft ...

--- tony

On Thu, Feb 21, 2= 019 at 9:56 PM Les Ginsberg (ginsberg) <ginsberg@cisco.com> wrote:

= Aijun =E2=80=93

= =C2=A0

= Controllers already have a reliable way to learn topology information for a= ll areas.

= There is therefore no need for the topology discovery solution you propose = =E2=80=93 and all the more so because your proposal does not work in all ca= ses and you have no definition of how a controller could tell when the information can be trusted and when it can=E2=80=99t.<= u>

= =C2=A0

= The only thing which is needed is to define a way to identify the source ro= uter-id of prefixes which are leaked between areas =E2=80=93 which is what = I have asked you to limit the draft to do.

= =C2=A0

= The mention of ELC/ERLD/MSD in your draft is spurious since you actually ha= ven=E2=80=99t defined any way to advertise that information between areas (= nor do I want you to do so).=C2=A0 It should be removed.

= =C2=A0

= I say again, this draft in its current form is not ready to be adopted.<= /u>

= =C2=A0

= =C2=A0=C2=A0 Les

= =C2=A0

= =C2=A0

From: Aijun Wang <wangaijun@tsinghua.org.cn>
Sent: Thursday, February 21, 2019 3:27 PM
To: John E Drake <jdrake=3D40juniper.net@dmarc.ietf.org>
Cc: Les Ginsberg (ginsberg) <ginsberg@cisco.com>; Acee Lindem (acee) <acee@cisco.com>; lsr@ietf.org
Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extens= ion for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext= -01

=C2=A0

Hi, John:

=C2=A0

Thanks for your review and comments.

The use cases and original thought in this draft are= different from that =C2=A0described in RFC7794. We have pointed out that R= FC7794 has the similar extension for ISIS and indicated that the extension = for ISIS can also be used in the use cases described in our draft. What=E2=80=99 other content do you think it is nee= ded further?

RFC 7770 =C2=A0solves mainly the advertising of rout= er=E2=80=99s capabilities, it shouldn=E2=80=99t be used for transmitting th= e information about the prefixes.

=C2=A0

Best Regards.

=C2=A0

Aijun Wang

China Telecom


On Feb 21, 2019, at 23:41, John E Drake <jdrake=3D40juniper.net@dmarc.ie= tf.org> wrote:

Hi,<= /u>

=C2=A0<= u>

I agree with Les.=C2= =A0 I think the draft should be recast to indicate that it is providing OSP= F parity with RFC 7794.

Can=E2=80=99t topolog= y discovery be done using RFC 7770?

=C2=A0<= u>

Yours Irrespectively,=

=C2=A0<= u>

John=

=C2=A0<= u>

From: Lsr <lsr-bounces@ietf.org> On Behalf Of Les Ginsberg (ginsberg)
Sent: Monday, February 18, 2019 8:22 AM
To: Acee Lindem (acee) <acee@cisco.com>; lsr@ietf.org
Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extens= ion for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext= -01

=C2=A0

= To the extent that the draft defines functionality equivalent to that defin= ed in IS-IS RFC 7794 =E2=80=93 specifically a means to advertise the source= router-id of a given advertisement =E2=80=93 it defines a necessary and useful extension to the OSPF protocol =E2=80=93 and I supp= ort that work.

= =C2=A0

= However, in its current form the draft discusses use of this mechanism for = inter-area topology discovery. This idea is seriously flawed =E2=80=93 as h= as been discussed extensively on the WG list.

= The draft also discusses uses cases related to ERLD, the direction for whic= h is very much uncertain at this time.

= =C2=A0

= I therefore feel that the current content of the draft is not what I would = expect to see approved by the WG as an RFC and therefore have significant r= eservations about moving forward with the existing content.

= =C2=A0

= I do want to see a draft addressing the source router-id advertisement gap = move forward =E2=80=93 and if this draft is reduced to focus on that then I= can enthusiastically support adoption =E2=80=93 but in its current form I cannot indicate support.

= =C2=A0

= =C2=A0=C2=A0 Les

= =C2=A0

= =C2=A0

_______________________________________________
Lsr mailing list
Lsr@ietf.org
htt= ps://www.ietf.org/mailman/listinfo/lsr

_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/mailman/listinfo/lsr
--0000000000001998ba058275e919-- From nobody Thu Feb 21 22:48:15 2019 Return-Path: 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 C06A7130DC9 for ; Thu, 21 Feb 2019 22:48:13 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.09 X-Spam-Level: X-Spam-Status: No, score=0.09 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, HTTPS_HTTP_MISMATCH=1.989, MIME_QP_LONG_LINE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=unavailable 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 rHXpSRDT7a44 for ; Thu, 21 Feb 2019 22:48:09 -0800 (PST) Received: from m21397.mail.qiye.163.com (m21397.mail.qiye.163.com [223.252.213.97]) by ietfa.amsl.com (Postfix) with ESMTP id 834DE130EEC for ; Thu, 21 Feb 2019 22:48:08 -0800 (PST) Received: from [192.168.124.12] (unknown [111.194.49.242]) by m21397.mail.qiye.163.com (Hmail) with ESMTPA id 9C2E3143E2E; Fri, 22 Feb 2019 14:48:00 +0800 (CST) Content-Type: multipart/alternative; boundary=Apple-Mail-B23DA91C-51A1-4C07-AA3B-FA25B9A68A0E Mime-Version: 1.0 (1.0) From: Aijun Wang X-Mailer: iPhone Mail (16D57) In-Reply-To: Date: Fri, 22 Feb 2019 14:47:59 +0800 Cc: John E Drake , "lsr@ietf.org" , "Acee Lindem (acee)" Content-Transfer-Encoding: 7bit Message-Id: <740943DD-5427-4CE8-A939-1A349C67C644@tsinghua.org.cn> References: <3B426740-F8DF-4E2B-8322-98E2EF2ACD31@tsinghua.org.cn> To: "Les Ginsberg (ginsberg)" X-HM-Spam-Status: e1kIGBQJHllBS1VLV1koWUFKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZMjUtOj cyP0FLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6OCI6GQw5LzlKPi8KCBgPTxFC PBAaCR9VSlVKTk5LQ0pDS0NNT09NVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlKSkpVSkJPVU9CVUlPSVlXWQgBWUFJSEJISTcG X-HM-Tid: 0a6913f5f7837f6bkuuk9c2e3143e2e Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 06:48:14 -0000 --Apple-Mail-B23DA91C-51A1-4C07-AA3B-FA25B9A68A0E Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, Les: The method to retrieve the topology information for inter-area scenario that= described in the current draft is more easily deployment and less requireme= nts for the connections between the controller and underlying routers. The ELC, ERLD and MSD are capabilities of the routers and can be flooded via= the mechanisms described in RFC7770. If there is no draft described the det= ails process, we can cooperate to write one. Acee has pointed out that these OSPF areas are often under one administrativ= e scope, and they know the address allocation philosophy of their underlying= networks, then can assure the reliability of the retrieved topology. Anyway, the aim of this draft is to let reader know how to use the introduce= d extension, not merely the extension itself.=20 Best Regards=20 Aijun Wang China Telecom > On Feb 22, 2019, at 13:56, Les Ginsberg (ginsberg) wr= ote: >=20 > Aijun =E2=80=93 > =20 > Controllers already have a reliable way to learn topology information for a= ll areas. > There is therefore no need for the topology discovery solution you propose= =E2=80=93 and all the more so because your proposal does not work in all ca= ses and you have no definition of how a controller could tell when the infor= mation can be trusted and when it can=E2=80=99t. > =20 > The only thing which is needed is to define a way to identify the source r= outer-id of prefixes which are leaked between areas =E2=80=93 which is what I= have asked you to limit the draft to do. > =20 > The mention of ELC/ERLD/MSD in your draft is spurious since you actually h= aven=E2=80=99t defined any way to advertise that information between areas (= nor do I want you to do so). It should be removed. > =20 > I say again, this draft in its current form is not ready to be adopted. > =20 > Les > =20 > =20 > From: Aijun Wang =20 > Sent: Thursday, February 21, 2019 3:27 PM > To: John E Drake > Cc: Les Ginsberg (ginsberg) ; Acee Lindem (acee) ; lsr@ietf.org > Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Pre= fix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > =20 > Hi, John: > =20 > Thanks for your review and comments. > The use cases and original thought in this draft are different from that d= escribed in RFC7794. We have pointed out that RFC7794 has the similar extens= ion for ISIS and indicated that the extension for ISIS can also be used in t= he use cases described in our draft. What=E2=80=99 other content do you thin= k it is needed further? > RFC 7770 solves mainly the advertising of router=E2=80=99s capabilities, i= t shouldn=E2=80=99t be used for transmitting the information about the prefi= xes. > =20 > Best Regards. > =20 >=20 > Aijun Wang > China Telecom >=20 > On Feb 21, 2019, at 23:41, John E Drake wrote: >=20 > Hi, > =20 > I agree with Les. I think the draft should be recast to indicate that it i= s providing OSPF parity with RFC 7794. > Can=E2=80=99t topology discovery be done using RFC 7770? > =20 > Yours Irrespectively, > =20 > John > =20 > From: Lsr On Behalf Of Les Ginsberg (ginsberg) > Sent: Monday, February 18, 2019 8:22 AM > To: Acee Lindem (acee) ; lsr@ietf.org > Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Pre= fix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > =20 > To the extent that the draft defines functionality equivalent to that defi= ned in IS-IS RFC 7794 =E2=80=93 specifically a means to advertise the source= router-id of a given advertisement =E2=80=93 it defines a necessary and use= ful extension to the OSPF protocol =E2=80=93 and I support that work. > =20 > However, in its current form the draft discusses use of this mechanism for= inter-area topology discovery. This idea is seriously flawed =E2=80=93 as h= as been discussed extensively on the WG list. > The draft also discusses uses cases related to ERLD, the direction for whi= ch is very much uncertain at this time. > =20 > I therefore feel that the current content of the draft is not what I would= expect to see approved by the WG as an RFC and therefore have significant r= eservations about moving forward with the existing content. > =20 > I do want to see a draft addressing the source router-id advertisement gap= move forward =E2=80=93 and if this draft is reduced to focus on that then I= can enthusiastically support adoption =E2=80=93 but in its current form I c= annot indicate support. > =20 > Les > =20 > =20 > From: Lsr On Behalf Of Acee Lindem (acee) > Sent: Wednesday, February 13, 2019 5:26 AM > To: lsr@ietf.org > Subject: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix O= riginator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > =20 > This begins a two week adoption poll for the subject draft. Please send yo= ur comments to this list before 12:00 AM UTC on Thursday, February 28th, 201= 9. > =20 > All authors have responded to the IPR poll and there is one https://datat= racker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-lsr-ospf-prefix-o= riginator-ext > It is listed multiple times but references the same CN201810650141. > =20 > Thanks, > Acee > =20 > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr --Apple-Mail-B23DA91C-51A1-4C07-AA3B-FA25B9A68A0E Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, Les:

The method to r= etrieve the topology information for inter-area scenario that described in t= he current draft is more easily deployment and less requirements for the con= nections between the controller and underlying routers.
The ELC, E= RLD and MSD are capabilities of the routers and can be flooded via the mecha= nisms described in RFC7770. If there is no draft described the details proce= ss, we can cooperate to write one.

Acee has pointed= out that these OSPF areas are often under one administrative scope, and the= y know the address allocation philosophy of their underlying networks, then c= an assure the reliability of the retrieved topology.

Anyway, the aim o= f this draft is to let reader know how to use the introduced extension, not m= erely the extension itself. 

Best Regards 

Aijun Wang
China T= elecom

On Feb 22, 2019, at 13:56, Les Ginsbe= rg (ginsberg) <ginsberg@cisco.com> wrote:

Aijun =E2= =80=93

&= nbsp;

Contro= llers already have a reliable way to learn topology information for all area= s.

There i= s therefore no need for the topology discovery solution you propose =E2=80=93= and all the more so because your proposal does not work in all cases and yo= u have no definition of how a controller could tell when the information can be trusted and when it can=E2=80=99t.

&= nbsp;

The on= ly thing which is needed is to define a way to identify the source router-id= of prefixes which are leaked between areas =E2=80=93 which is what I have a= sked you to limit the draft to do.

&= nbsp;

The me= ntion of ELC/ERLD/MSD in your draft is spurious since you actually haven=E2=80= =99t defined any way to advertise that information between areas (nor do I w= ant you to do so).  It should be removed.

&= nbsp;

I say a= gain, this draft in its current form is not ready to be adopted.<= /span>

&= nbsp;

 =   Les

&= nbsp;

&= nbsp;

From:<= span style=3D"font-size:11.0pt"> Aijun Wang <wangaijun@tsinghua.org.cn>
Sent: Thursday, February 21, 2019 3:27 PM
To: John E Drake <jdrake=3D40juniper.net@dmarc.ietf.org>
Cc: Les Ginsberg (ginsberg) <ginsberg@cisco.com>; Acee Lindem (acee) <acee@cisco.com>; lsr@ietf.o= rg
Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension fo= r Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01

 

Hi, John:

 

Thanks for your review and comments.

The use cases and original thought in this draft are d= ifferent from that  described in RFC7794. We have pointed out that RFC7= 794 has the similar extension for ISIS and indicated that the extension for I= SIS can also be used in the use cases described in our draft. What=E2=80=99 other content do you think it is need= ed further?

RFC 7770  solves mainly the advertising of route= r=E2=80=99s capabilities, it shouldn=E2=80=99t be used for transmitting the i= nformation about the prefixes.

 

Best Regards.

 

Aijun Wang

China Telecom


On Feb 21, 2019, at 23:41, John E Drake <jdrake=3D40juniper.net@dmarc.ietf.org> wrote= :

Hi,

 

I agree with Les.&nb= sp; I think the draft should be recast to indicate that it is providing OSPF= parity with RFC 7794.

Can=E2=80=99t topolo= gy discovery be done using RFC 7770?

 

Yours Irrespectively= ,

 

John

 

From:<= span style=3D"font-size:11.0pt"> Lsr <lsr-bounces@ietf.org> On Behalf Of Les Ginsberg (ginsberg)
Sent: Monday, February 18, 2019 8:22 AM
To: Acee Lindem (acee) <acee@cis= co.com>; lsr@ietf.org
Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension fo= r Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01

 

To the= extent that the draft defines functionality equivalent to that defined in I= S-IS RFC 7794 =E2=80=93 specifically a means to advertise the source router-= id of a given advertisement =E2=80=93 it defines a necessary and useful extension to the OSPF protocol =E2=80=93 and I suppo= rt that work.

 =

Howeve= r, in its current form the draft discusses use of this mechanism for inter-a= rea topology discovery. This idea is seriously flawed =E2=80=93 as has been d= iscussed extensively on the WG list.

The dr= aft also discusses uses cases related to ERLD, the direction for which is ve= ry much uncertain at this time.

 =

I ther= efore feel that the current content of the draft is not what I would expect t= o see approved by the WG as an RFC and therefore have significant reservatio= ns about moving forward with the existing content.

 =

I do w= ant to see a draft addressing the source router-id advertisement gap move fo= rward =E2=80=93 and if this draft is reduced to focus on that then I can ent= husiastically support adoption =E2=80=93 but in its current form I cannot indicate support.

 =

 =   Les

 =

 =

From:<= span style=3D"font-size:11.0pt"> Lsr <lsr-bounces@ietf.org> On Behalf Of Acee Lindem (acee)
Sent: Wednesday, February 13, 2019 5:26 AM
To: lsr@ietf.org
Subject: [Lsr] Working Group Adoption Poll for "OSPF Extension for Pr= efix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01<= /o:p>

 

This begins a two we= ek adoption poll for the subject draft. Please send your comments to this li= st before 12:00 AM UTC on Thursday, February 28th, 2019.

 

All authors have res= ponded to the IPR poll and there is one  = https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-= lsr-ospf-prefix-originator-ext

It is listed multipl= e times but references the same CN201810650141.

 

Thanks,<= /o:p>

Acee

 

_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/m= ailman/listinfo/lsr

________= _______________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org= /mailman/listinfo/lsr
= --Apple-Mail-B23DA91C-51A1-4C07-AA3B-FA25B9A68A0E-- From nobody Thu Feb 21 23:22:07 2019 Return-Path: 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 C799D12F1A5 for ; Thu, 21 Feb 2019 23:22:04 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.09 X-Spam-Level: X-Spam-Status: No, score=0.09 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, HTTPS_HTTP_MISMATCH=1.989, MIME_QP_LONG_LINE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-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 pc0Mxe07bS-t for ; Thu, 21 Feb 2019 23:22:01 -0800 (PST) Received: from m21397.mail.qiye.163.com (m21397.mail.qiye.163.com [223.252.213.97]) by ietfa.amsl.com (Postfix) with ESMTP id 1E4B1130E5D for ; Thu, 21 Feb 2019 23:22:00 -0800 (PST) Received: from [100.1.133.149] (unknown [106.121.151.136]) by m21397.mail.qiye.163.com (Hmail) with ESMTPA id DEDC0143AC6; Fri, 22 Feb 2019 15:21:51 +0800 (CST) Content-Type: multipart/alternative; boundary=Apple-Mail-6F2A172B-6D17-4BC4-B8FA-037C8EAB6575 Mime-Version: 1.0 (1.0) From: Aijun Wang X-Mailer: iPhone Mail (16D57) In-Reply-To: Date: Fri, 22 Feb 2019 15:20:34 +0800 Cc: "Les Ginsberg (ginsberg)" , "Acee Lindem (acee)" , "lsr@ietf.org" , John E Drake Content-Transfer-Encoding: 7bit Message-Id: References: <3B426740-F8DF-4E2B-8322-98E2EF2ACD31@tsinghua.org.cn> To: Tony Przygienda X-HM-Spam-Status: e1kIGBQJHllBS1VLV1koWUFKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZMjUtOj cyP0FLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Pio6Ezo*FDkCGC9RTDw2SC8I SRgwCRxVSlVKTk5LQ0lLSkpDSE5OVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlKS01VSklKVUpOSlVKSE1ZV1kIAVlBSU5CSkw3Bg++ X-HM-Tid: 0a691414f6307f6bkuukdedc0143ac6 Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 07:22:05 -0000 --Apple-Mail-6F2A172B-6D17-4BC4-B8FA-037C8EAB6575 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, Tony: Not got well all your comments :( Wish the explanation in previous mail to Les can change your impression to t= his draft a bit. Best Regards. Aijun Wang China Telecom > On Feb 22, 2019, at 14:42, Tony Przygienda wrote: >=20 > I read it during some mildly boring phone conference here ;-) I do (unsupr= isingly) tend to agree with Mr. Ginsberg here. Putting originator on prefix,= well, ok, I understand how people got there instead of having a clean route= r LSA with its loopback hanging of it (which would be IMO the right abstract= ion but alas, IP decided originally that interfaces have addresses and route= rs, well, don't. Overall not the best architecture remedied by loopback hack= s since forever then. I digress ...). So putting router-id on type-3 loopbac= k serves its purpose of "how do I get to this node across topology abstracti= ons [areas]". Allows central entities (controllers and such) to get to every= node in the topology without violating abstractions (too much ;-). Cleaner s= olutions would be thinkable but more complex obviously. But coming back to t= his draft, alas, trying to build the whole topology distribution tails-up, i= .e. redistribute topology view behind prefixes which are really leafs-of-top= ology strikes me just another confused slippery slope just like re-encoding o= ne protocol's native formats into another protocol :-P ... And if the author= s suffer from mild bout of over-creativity I suggest to split that part into= an informational draft ...=20 >=20 > --- tony=20 >=20 >> On Thu, Feb 21, 2019 at 9:56 PM Les Ginsberg (ginsberg) wrote: >> Aijun =E2=80=93 >>=20 >> =20 >>=20 >> Controllers already have a reliable way to learn topology information for= all areas. >>=20 >> There is therefore no need for the topology discovery solution you propos= e =E2=80=93 and all the more so because your proposal does not work in all c= ases and you have no definition of how a controller could tell when the info= rmation can be trusted and when it can=E2=80=99t. >>=20 >> =20 >>=20 >> The only thing which is needed is to define a way to identify the source r= outer-id of prefixes which are leaked between areas =E2=80=93 which is what I= have asked you to limit the draft to do. >>=20 >> =20 >>=20 >> The mention of ELC/ERLD/MSD in your draft is spurious since you actually h= aven=E2=80=99t defined any way to advertise that information between areas (= nor do I want you to do so). It should be removed. >>=20 >> =20 >>=20 >> I say again, this draft in its current form is not ready to be adopted. >>=20 >> =20 >>=20 >> Les >>=20 >> =20 >>=20 >> =20 >>=20 >> From: Aijun Wang =20 >> Sent: Thursday, February 21, 2019 3:27 PM >> To: John E Drake >> Cc: Les Ginsberg (ginsberg) ; Acee Lindem (acee) ; lsr@ietf.org >> Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Pr= efix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 >>=20 >> =20 >>=20 >> Hi, John: >>=20 >> =20 >>=20 >> Thanks for your review and comments. >>=20 >> The use cases and original thought in this draft are different from that = described in RFC7794. We have pointed out that RFC7794 has the similar exte= nsion for ISIS and indicated that the extension for ISIS can also be used in= the use cases described in our draft. What=E2=80=99 other content do you th= ink it is needed further? >>=20 >> RFC 7770 solves mainly the advertising of router=E2=80=99s capabilities,= it shouldn=E2=80=99t be used for transmitting the information about the pre= fixes. >>=20 >> =20 >>=20 >> Best Regards. >>=20 >> =20 >>=20 >> Aijun Wang >>=20 >> China Telecom >>=20 >>=20 >> On Feb 21, 2019, at 23:41, John E Drake wrote: >>=20 >> Hi, >>=20 >> =20 >>=20 >> I agree with Les. I think the draft should be recast to indicate that it= is providing OSPF parity with RFC 7794. >>=20 >> Can=E2=80=99t topology discovery be done using RFC 7770? >>=20 >> =20 >>=20 >> Yours Irrespectively, >>=20 >> =20 >>=20 >> John >>=20 >> =20 >>=20 >> From: Lsr On Behalf Of Les Ginsberg (ginsberg) >> Sent: Monday, February 18, 2019 8:22 AM >> To: Acee Lindem (acee) ; lsr@ietf.org >> Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Pr= efix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 >>=20 >> =20 >>=20 >> To the extent that the draft defines functionality equivalent to that def= ined in IS-IS RFC 7794 =E2=80=93 specifically a means to advertise the sourc= e router-id of a given advertisement =E2=80=93 it defines a necessary and us= eful extension to the OSPF protocol =E2=80=93 and I support that work. >>=20 >> =20 >>=20 >> However, in its current form the draft discusses use of this mechanism fo= r inter-area topology discovery. This idea is seriously flawed =E2=80=93 as h= as been discussed extensively on the WG list. >>=20 >> The draft also discusses uses cases related to ERLD, the direction for wh= ich is very much uncertain at this time. >>=20 >> =20 >>=20 >> I therefore feel that the current content of the draft is not what I woul= d expect to see approved by the WG as an RFC and therefore have significant r= eservations about moving forward with the existing content. >>=20 >> =20 >>=20 >> I do want to see a draft addressing the source router-id advertisement ga= p move forward =E2=80=93 and if this draft is reduced to focus on that then I= can enthusiastically support adoption =E2=80=93 but in its current form I c= annot indicate support. >>=20 >> =20 >>=20 >> Les >>=20 >> =20 >>=20 >> =20 >>=20 >> From: Lsr On Behalf Of Acee Lindem (acee) >> Sent: Wednesday, February 13, 2019 5:26 AM >> To: lsr@ietf.org >> Subject: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix= Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01 >>=20 >> =20 >>=20 >> This begins a two week adoption poll for the subject draft. Please send y= our comments to this list before 12:00 AM UTC on Thursday, February 28th, 20= 19. >>=20 >> =20 >>=20 >> All authors have responded to the IPR poll and there is one https://data= tracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-lsr-ospf-prefix-= originator-ext >>=20 >> It is listed multiple times but references the same CN201810650141. >>=20 >> =20 >>=20 >> Thanks, >>=20 >> Acee >>=20 >> =20 >>=20 >> _______________________________________________ >> Lsr mailing list >> Lsr@ietf.org >> https://www.ietf.org/mailman/listinfo/lsr >>=20 >> _______________________________________________ >> Lsr mailing list >> Lsr@ietf.org >> https://www.ietf.org/mailman/listinfo/lsr > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr --Apple-Mail-6F2A172B-6D17-4BC4-B8FA-037C8EAB6575 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, Tony:
Not got well all your comment= s :(
Wish the explanation in previous mail to Les can change your i= mpression to this draft a bit.

Best Regards.
Aijun Wang
China Telecom

On Feb 22, 2019, at 14:42, Tony Przygienda <= tonysietf@gmail.com> wrote:
= I read it during some mildly boring phone conference here ;-) I do (unsupris= ingly) tend to agree with Mr. Ginsberg here. Putting originator on prefix, w= ell, ok, I understand how people got there instead of having a clean router L= SA with its loopback hanging of it (which would be IMO the right abstraction= but alas, IP decided originally that interfaces have addresses and routers,= well, don't. Overall not the best architecture remedied by loopback hacks s= ince forever then. I digress ...). So putting router-id on type-3 loopback s= erves its purpose of "how do I get to this node across topology abstractions= [areas]". Allows central entities (controllers and such) to get to every no= de in the topology without violating abstractions (too much ;-). Cleaner sol= utions would be thinkable but more complex obviously. But coming back to thi= s draft, alas, trying to build the whole topology distribution tails-up, i.e= . redistribute topology view behind prefixes which are really leafs-of-topol= ogy strikes me just another confused slippery slope just like re-encoding on= e protocol's native formats into another protocol :-P ... And if the authors= suffer from mild bout of over-creativity I suggest to split that part into a= n informational draft ...

--- tony
<= /div>
On= Thu, Feb 21, 2019 at 9:56 PM Les Ginsberg (ginsberg) <ginsberg@cisco.com> wrote:

A= ijun =E2=80=93

<= u> 

C= ontrollers already have a reliable way to learn topology information for all= areas.

T= here is therefore no need for the topology discovery solution you propose =E2= =80=93 and all the more so because your proposal does not work in all cases a= nd you have no definition of how a controller could tell when the information can be trusted and when it can=E2=80=99t.

<= u> 

T= he only thing which is needed is to define a way to identify the source rout= er-id of prefixes which are leaked between areas =E2=80=93 which is what I h= ave asked you to limit the draft to do.

<= u> 

T= he mention of ELC/ERLD/MSD in your draft is spurious since you actually have= n=E2=80=99t defined any way to advertise that information between areas (nor= do I want you to do so).  It should be removed.

<= u> 

I= say again, this draft in its current form is not ready to be adopted.

<= u> 

&= nbsp;  Les

<= u> 

<= u> 

From: Aijun Wang <wangaijun@tsinghua.org.cn>
Sent: Thursday, February 21, 2019 3:27 PM
To: John E Drake <jdrake=3D40juniper.net@dmarc.ietf.org>
Cc: Les Ginsberg (ginsberg) <ginsberg@cisco.com>; Acee Lindem (acee) <acee@cisco.com>; lsr@ietf.org
Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension fo= r Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01

 

Hi, John:

 

Thanks for your review and comments.

The use cases and original thought in this draft are d= ifferent from that  described in RFC7794. We have pointed out that RFC7= 794 has the similar extension for ISIS and indicated that the extension for I= SIS can also be used in the use cases described in our draft. What=E2=80=99 other content do you think it is need= ed further?

RFC 7770  solves mainly the advertising of route= r=E2=80=99s capabilities, it shouldn=E2=80=99t be used for transmitting the i= nformation about the prefixes.

 

Best Regards.

 

=

Aijun Wang

China Telecom


On Feb 21, 2019, at 23:41, John E Drake <jdrake=3D40juniper.net@dmarc.ietf= .org> wrote:

Hi,

 

I agree with Les. = ; I think the draft should be recast to indicate that it is providing OSPF p= arity with RFC 7794.

Can=E2=80=99t topology= discovery be done using RFC 7770?

 

Yours Irrespectively,<= /span>

 

John<= /u>

 

From: Lsr <lsr-bounces@ietf.org> On Behalf Of Les Ginsberg (ginsberg)
Sent: Monday, February 18, 2019 8:22 AM
To: Acee Lindem (acee) <acee@cisco.com>; lsr@ietf.org
Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension fo= r Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01

 

T= o the extent that the draft defines functionality equivalent to that defined= in IS-IS RFC 7794 =E2=80=93 specifically a means to advertise the source ro= uter-id of a given advertisement =E2=80=93 it defines a necessary and useful extension to the OSPF protocol =E2=80=93 and I suppo= rt that work.

&= nbsp;

H= owever, in its current form the draft discusses use of this mechanism for in= ter-area topology discovery. This idea is seriously flawed =E2=80=93 as has b= een discussed extensively on the WG list.

T= he draft also discusses uses cases related to ERLD, the direction for which i= s very much uncertain at this time.

&= nbsp;

I= therefore feel that the current content of the draft is not what I would ex= pect to see approved by the WG as an RFC and therefore have significant rese= rvations about moving forward with the existing content.

&= nbsp;

I= do want to see a draft addressing the source router-id advertisement gap mo= ve forward =E2=80=93 and if this draft is reduced to focus on that then I ca= n enthusiastically support adoption =E2=80=93 but in its current form I cannot indicate support.

&= nbsp;

&= nbsp;  Les

&= nbsp;

&= nbsp;

_______________________________________________
Lsr mailing list
Lsr@ietf.org
http= s://www.ietf.org/mailman/listinfo/lsr

_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/mailman/listinfo/lsr
________= _______________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org= /mailman/listinfo/lsr
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173.37.102.11, xch-rcd-001.cisco.com X-Outbound-Node: alln-core-1.cisco.com Archived-At: Subject: Re: [Lsr] "OSPF Routing with Cross-Address Family Traffic Engineering Tunnels" - draft-ietf-ospf-xaf-te-05 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 10:18:03 -0000 --_000_SN6PR11MB2845CC63F9ED9ADA932638BBC17F0SN6PR11MB2845namp_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 SGkgQWxsLA0KDQpUaGUgdXBkYXRlcyB0byB0aGUgdmVyc2lvbiAwNSBvZiB0aGUgZHJhZnQgbGFy Z2VseSBhZGRyZXNzIG15IGNvbW1lbnRzLg0KDQpQbGVhc2UgY2hlY2sgaW5saW5lIGJlbG93IGZv ciBzb21lIGZ1cnRoZXIgY29tbWVudHMuDQoNCg0KRnJvbTogQWxleGFuZGVyIE9rb25uaWtvdiA8 YWxleGFuZGVyLm9rb25uaWtvdkBnbWFpbC5jb20+DQpTZW50OiAwOCBGZWJydWFyeSAyMDE5IDE1 OjU2DQpUbzogQWNlZSBMaW5kZW0gKGFjZWUpIDxhY2VlQGNpc2NvLmNvbT4NCkNjOiBsc3JAaWV0 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cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1643.16; Fri, 22 Feb 2019 10:41:09 +0000 Received: from SN6PR11MB2845.namprd11.prod.outlook.com ([fe80::117:6d33:4c0a:a1b3]) by SN6PR11MB2845.namprd11.prod.outlook.com ([fe80::117:6d33:4c0a:a1b3%3]) with mapi id 15.20.1643.018; Fri, 22 Feb 2019 10:41:09 +0000 From: "Ketan Talaulikar (ketant)" To: Christian Hopps , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. 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X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 10:41:15 -0000 I support the adoption of this draft by the WG. Thanks, Ketan -----Original Message----- From: Lsr On Behalf Of Christian Hopps Sent: 11 February 2019 16:15 To: lsr@ietf.org Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.org Subject: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR = poll. Hi Folks, We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. The aim of this document is to describe the problem space and standardize a= way to signal dynamic flooding information. It does not standardize any sp= ecific algorithm for flooding topology creation. Authors please respond indicating if you are aware of any IPR related to th= is work. We also have another draft (draft-cc-lsr-flooding-reduction-01) that starte= d as a distributed flooding topology algorithm and morphed into that plus c= ompeting ideas on signaling of flooding topology information. The intent af= ter adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG c= an discuss adding any signaling ideas from this work to the adopted signali= ng draft (with proper attribution given as appropriate), and two, for the a= uthors of draft-cc-lsr-flooding-reduction-01 to publish a new document with= out the signaling portion and instead focus on their flooding topology algo= rithm. This new focused document can be considered in parallel along with t= he other algorithm work that has been proposed. Flooding topology creation is seen as a hard problem for which we don't exp= ect a one-size-fits-all solution. Taking the steps outlined above will help= us move forward on the solutions. Thanks, Chris & Acee. LSR WG Chairs. From nobody Fri Feb 22 13:00:35 2019 Return-Path: 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 01624130F96; Fri, 22 Feb 2019 13:00:30 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.749 X-Spam-Level: X-Spam-Status: No, score=-1.749 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=no 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 xZzPmccYJYC7; Fri, 22 Feb 2019 13:00:27 -0800 (PST) Received: from mail-ed1-x544.google.com (mail-ed1-x544.google.com [IPv6:2a00:1450:4864:20::544]) (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 48780130E5E; Fri, 22 Feb 2019 13:00:27 -0800 (PST) Received: by mail-ed1-x544.google.com with SMTP id p27so2924900edc.6; Fri, 22 Feb 2019 13:00:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=othpr9BIyOGQ/WFc6H6Fnu0uOR/OHnlOaQW8EVVZL78=; b=T0vJqKZQQBTiXoqCfBQSQvSeHqasfPMgfzgu2d/iX/QfWempg1fzmgVi1SiFTxH4qA J0KSHPln0Ul0l5p7mX6e2bji4HEgM75Qe2QO6jgu4XXeQftwhkD5QEunZoUqpjrntZKv tGKP5WpUCXEzOClJHSZzUTVlj4TdpKN4BpttaDw/62q2jczexyUf8XI+orjxtE2IRqf3 b6vIhHw72jJMkdGNADjOdRqOK6fhHvCQlmZMx9tNITiiwQKD+b7I1RjTTuHhzYBIu2Ww 3VNpsMH9dN3SRBmRg3QMoX/Jwd8qC/Tg72i7HopppP+BSSAuxf7E3FBdZC60zI9+fa0V VLhg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=othpr9BIyOGQ/WFc6H6Fnu0uOR/OHnlOaQW8EVVZL78=; b=MBnInjoj5xWR1SGvSx3iwtW/QBqWxAHGUHGRk7FfCsJNP/bTxCsimFbvb0JXRTJ1uI MW2RL1MCxxcFqjxcEMIa8hNOrbo4iLDhUnSvkgUk7qC95EECIIPc52YyxCeCa+lrQvNA rb0XKjyR/GdhLd3XIb+Yj2N9zcGVyakh6/pHlsSTFHDZorIJO8KX0kj74+kuGOrFGKzF cGMLD6Q9Z+mnU9c1BAE2lGi8CVwzQOvflzXfB0MyyMCWow9u41+UAPooKY0wULHV5BqD FfmVivyHQT+3WgSGaBy2mO3JsXZUV57b8PRccuUTs/1kI8HWezZ/SxtLYwFE0zNCUglI MLrg== X-Gm-Message-State: AHQUAubJJqrjSZzcjAK1YSaS+HmMOjELvJ9hvVQKVdBIdDwANW5Odxr8 fbxEyOqW2mqFj8faR49jhjKmJ74Rl0L0PSonhDioM9/qwGc= X-Google-Smtp-Source: AHgI3IZZXcYTRc0oLMHZxqiZT8YKtxfvjiW5+0AggNhYag7QkUmHNYbqkIis0lQ0B3eWpnnB+QzSd5l22QNKMEGR/x4= X-Received: by 2002:a50:b6e6:: with SMTP id f35mr4810466ede.94.1550869225691; Fri, 22 Feb 2019 13:00:25 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: sridhar santhanam Date: Fri, 22 Feb 2019 13:00:14 -0800 Message-ID: To: Christian Hopps , "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Content-Type: multipart/alternative; boundary="0000000000004a608e058281e164" Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 21:00:34 -0000 --0000000000004a608e058281e164 Content-Type: text/plain; charset="UTF-8" Hi All, I support the adoption of this draft. Thanks, Sridhar.S > > -----Original Message----- > From: Lsr On Behalf Of Christian Hopps > Sent: 11 February 2019 16:15 > To: lsr@ietf.org > Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.org > Subject: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR > poll. > > > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > The aim of this document is to describe the problem space and standardize > a way to signal dynamic flooding information. It does not standardize any > specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to > this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that > started as a distributed flooding topology algorithm and morphed into that > plus competing ideas on signaling of flooding topology information. The > intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, > the WG can discuss adding any signaling ideas from this work to the adopted > signaling draft (with proper attribution given as appropriate), and two, > for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new > document without the signaling portion and instead focus on their flooding > topology algorithm. This new focused document can be considered in parallel > along with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above will > help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > --0000000000004a608e058281e164 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi All,
=C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 I support the adoption of this draft.

Thanks,
Sridhar.S



-----Original Message-----
From: Lsr <lsr= -bounces@ietf.org> On Behalf Of Christian Hopps
Sent: 11 February 2019 16:15
To: lsr@ietf.org
Cc: lsr-chairs@iet= f.org; lsr-ads@ie= tf.org; chopps@c= hopps.org
Subject: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR = poll.


Hi Folks,

We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02.=

The aim of this document is to describe the problem space and standardize a= way to signal dynamic flooding information. It does not standardize any sp= ecific algorithm for flooding topology creation.

Authors please respond indicating if you are aware of any IPR related to th= is work.

We also have another draft (draft-cc-lsr-flooding-reduction-01) that starte= d as a distributed flooding topology algorithm and morphed into that plus c= ompeting ideas on signaling of flooding topology information. The intent af= ter adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG c= an discuss adding any signaling ideas from this work to the adopted signali= ng draft (with proper attribution given as appropriate), and two, for the a= uthors of draft-cc-lsr-flooding-reduction-01 to publish a new document with= out the signaling portion and instead focus on their flooding topology algo= rithm. This new focused document can be considered in parallel along with t= he other algorithm work that has been proposed.

Flooding topology creation is seen as a hard problem for which we don't= expect a one-size-fits-all solution. Taking the steps outlined above will = help us move forward on the solutions.

Thanks,
Chris & Acee.
LSR WG Chairs.

_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/mailman/listinfo/lsr
--0000000000004a608e058281e164-- From nobody Sat Feb 23 21:35:39 2019 Return-Path: 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 AE826130E2F; Sat, 23 Feb 2019 21:35:37 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-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 4WP83CGPhbzD; Sat, 23 Feb 2019 21:35:34 -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 1594A1228B7; Sat, 23 Feb 2019 21:35:34 -0800 (PST) Received: from lhreml704-cah.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id 8F979F1BF40AEC22DC02; Sun, 24 Feb 2019 05:35:31 +0000 (GMT) Received: from SJCEML702-CHM.china.huawei.com (10.208.112.38) by lhreml704-cah.china.huawei.com (10.201.108.45) with Microsoft SMTP Server (TLS) id 14.3.408.0; Sun, 24 Feb 2019 05:35:30 +0000 Received: from SJCEML521-MBX.china.huawei.com ([169.254.1.111]) by SJCEML702-CHM.china.huawei.com ([169.254.4.38]) with mapi id 14.03.0415.000; Sat, 23 Feb 2019 21:34:34 -0800 From: Huaimo Chen To: Christian Hopps , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. Thread-Index: AQHUwfc3rlPy0Ul4REi1Ut4/82BOw6XsOGoAgAJCW3A= Date: Sun, 24 Feb 2019 05:34:34 +0000 Message-ID: <5316A0AB3C851246A7CA5758973207D463B5858A@sjceml521-mbx.china.huawei.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.212.244.110] Content-Type: multipart/alternative; boundary="_000_5316A0AB3C851246A7CA5758973207D463B5858Asjceml521mbxchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Feb 2019 05:35:38 -0000 --_000_5316A0AB3C851246A7CA5758973207D463B5858Asjceml521mbxchi_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Some issues with draft-li-lsr-dynamic-flooding-02 not fully addressed are b= riefed below. 1) There is no concrete procedure/method for fault tolerance to m= ultiple failures. When multiple failures happen and split the flooding topo= logy, the convergence time will be increased significantly without fault to= lerance. The longer the convergence time, the more the traffic lose. 2) The extensions to Hello protocols for enabling "temporary floo= ding" over a new link is not needed. 3) The extensions to Hello protocols for requesting/signaling "te= mporary flooding" for a connection does not work. In addition, for signaling the distributed solution/mode or the centralized= solution/mode, a user/operator needs to configure or select a solution/mod= e on a node via CLI or other approach first. Which node should the user/ope= rator use to configure/select a mode? If the user/operator can only use th= e leader node in the area to configure, then it is neither convenient nor r= easonable. The leader node in the area is dynamically generated. But in the= distributed mode/solution, there is no leader selection (i.e., no leader s= hould be generated). draft-cc-lsr-flooding-reduction-01 contains solutions for some of the above= issues, which should be merged based on technical merits. Best Regards, Huaimo -----Original Message----- From: Lsr On Behalf Of Christian Hopps Sent: 11 February 2019 16:15 To: lsr@ietf.org Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.org Subject: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR = poll. Hi Folks, We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. The aim of this document is to describe the problem space and standardize a= way to signal dynamic flooding information. It does not standardize any sp= ecific algorithm for flooding topology creation. Authors please respond indicating if you are aware of any IPR related to th= is work. We also have another draft (draft-cc-lsr-flooding-reduction-01) that starte= d as a distributed flooding topology algorithm and morphed into that plus c= ompeting ideas on signaling of flooding topology information. The intent af= ter adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG c= an discuss adding any signaling ideas from this work to the adopted signali= ng draft (with proper attribution given as appropriate), and two, for the a= uthors of draft-cc-lsr-flooding-reduction-01 to publish a new document with= out the signaling portion and instead focus on their flooding topology algo= rithm. This new focused document can be considered in parallel along with t= he other algorithm work that has been proposed. Flooding topology creation is seen as a hard problem for which we don't exp= ect a one-size-fits-all solution. Taking the steps outlined above will help= us move forward on the solutions. Thanks, Chris & Acee. LSR WG Chairs. _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr --_000_5316A0AB3C851246A7CA5758973207D463B5858Asjceml521mbxchi_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Some issues with draft-li-lsr-dynamic-flooding-02= not fully addressed are briefed below.

 

1)        = ;   There is no concrete procedure/method for fault tolerance to = multiple failures. When multiple failures happen and split the flooding top= ology, the convergence time will be increased significantly without fault t= olerance. The longer the convergence time, the more the traffic lose.

 

2)        = ;   The extensions to Hello protocols for enabling “tempora= ry flooding” over a new link is not needed.

 

3)        = ;   The extensions to Hello protocols for requesting/signaling &#= 8220;temporary flooding” for a connection does not work.

 

In addition, for signaling the distributed soluti= on/mode or the centralized solution/mode, a user/operator needs to configur= e or select a solution/mode on a node via CLI or other approach first. Whic= h node should the user/operator use to configure/select a mode?  If the user/operator can only use the le= ader node in the area to configure, then it is neither convenient nor reaso= nable. The leader node in the area is dynamically generated. But in the dis= tributed mode/solution, there is no leader selection (i.e., no leader should be generated).

 

draft-cc-lsr-flooding-reduction-01 contains solut= ions for some of the above issues, which should be merged based on technica= l merits.

 

Best Regards,

Huaimo

 

-----Original Message-----

From: Lsr <lsr-bounces@ietf.org> On Behalf = Of Christian Hopps

Sent: 11 February 2019 16:15

To: lsr@ietf.org

Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps= @chopps.org

Subject: [Lsr] WG Adoption Call for draft-li-lsr-= dynamic-flooding-02 + IPR poll.

 

 

Hi Folks,

 

We are starting a 2 week adoption call on draft-l= i-lsr-dynamic-flooding-02.

 

The aim of this document is to describe the probl= em space and standardize a way to signal dynamic flooding information. It d= oes not standardize any specific algorithm for flooding topology creation.<= o:p>

 

Authors please respond indicating if you are awar= e of any IPR related to this work.

 

We also have another draft (draft-cc-lsr-flooding= -reduction-01) that started as a distributed flooding topology algorithm an= d morphed into that plus competing ideas on signaling of flooding topology = information. The intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG can discuss a= dding any signaling ideas from this work to the adopted signaling draft (wi= th proper attribution given as appropriate), and two, for the authors of dr= aft-cc-lsr-flooding-reduction-01 to publish a new document without the signaling portion and instead focus = on their flooding topology algorithm. This new focused document can be cons= idered in parallel along with the other algorithm work that has been propos= ed.

 

Flooding topology creation is seen as a hard prob= lem for which we don't expect a one-size-fits-all solution. Taking the step= s outlined above will help us move forward on the solutions.

 

Thanks,

Chris & Acee.

LSR WG Chairs.

 

_______________________________________________

Lsr mailing list

Lsr@ietf.org

https://www.ietf.org/mailman/listinfo/lsr

--_000_5316A0AB3C851246A7CA5758973207D463B5858Asjceml521mbxchi_-- From nobody Sun Feb 24 10:47:28 2019 Return-Path: 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 CCC8B129A85; Sun, 24 Feb 2019 10:47:26 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-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 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 rX6DU9q2_peO; Sun, 24 Feb 2019 10:47:24 -0800 (PST) Received: from aer-iport-2.cisco.com (aer-iport-2.cisco.com [173.38.203.52]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 970C012426E; Sun, 24 Feb 2019 10:47:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=4177; q=dns/txt; s=iport; t=1551034044; x=1552243644; h=subject:to:references:cc:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=KzxebHSqr2XEVDvkiR3MLUIZWjPdBIZ2t0GgAU/cgso=; b=NdD3vJc/DUDGY67zyreXLPzTWrsB5JrvWXe9yZegF4fWyAyNVY6jkpK6 Q9YWSvaP8Jt2ORgu5NYF44Z6aaX2Ek9xpqSPvv/flqPi1Ss0fCHl+IDuZ QxA0NpbJ+LMtYaSTlX9N30C7TZSQ8UQSM8YX6J3XZ0LERo3n8gCaOwde5 s=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AGAAAf5nJc/xbLJq1lGgEBAQEBAgE?= =?us-ascii?q?BAQEHAgEBAQGBUgQBAQEBCwGCalABIBInjQCNBJgegXsNGAuESQKEIDUIDQE?= =?us-ascii?q?DAQECAQECbRwMhUoBAQEBAwEBGxUBBTYLDAQLEQQBAQEuJygIBgEMBgIBARe?= =?us-ascii?q?DBQGBcg+re4VEhFkFhXuGZIFAP4E4gmuDHgEBh0ICiXiZYQmSWgYZgXGFW4M?= =?us-ascii?q?biCiJfwlGkjWBSAE2gVYzGggbFTuCbIsehUA+AzCNPiqCIwEB?= X-IronPort-AV: E=Sophos;i="5.58,408,1544486400"; d="scan'208";a="10366930" Received: from aer-iport-nat.cisco.com (HELO aer-core-2.cisco.com) ([173.38.203.22]) by aer-iport-2.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Feb 2019 18:47:21 +0000 Received: from [10.60.140.53] (ams-ppsenak-nitro4.cisco.com [10.60.140.53]) by aer-core-2.cisco.com (8.15.2/8.15.2) with ESMTP id x1OIlJMw018746; Sun, 24 Feb 2019 18:47:20 GMT To: Huaimo Chen , Christian Hopps , "lsr@ietf.org" References: <5316A0AB3C851246A7CA5758973207D463B5858A@sjceml521-mbx.china.huawei.com> Cc: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" From: Peter Psenak Message-ID: <420ed1b5-d849-99cc-bcb0-d159783e4de2@cisco.com> Date: Sun, 24 Feb 2019 19:47:19 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <5316A0AB3C851246A7CA5758973207D463B5858A@sjceml521-mbx.china.huawei.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-Outbound-SMTP-Client: 10.60.140.53, ams-ppsenak-nitro4.cisco.com X-Outbound-Node: aer-core-2.cisco.com Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Feb 2019 18:47:27 -0000 Huaimo, On 24/02/2019 06:34 , Huaimo Chen wrote: > Some issues with draft-li-lsr-dynamic-flooding-02 not fully addressed > are briefed below. > > > > 1) There is no concrete procedure/method for fault tolerance > to multiple failures. When multiple failures happen and split the > flooding topology, the convergence time will be increased significantly > without fault tolerance. The longer the convergence time, the more the > traffic lose. there is a solution for multiple failures - see section 6.7.11. > > > > 2) The extensions to Hello protocols for enabling “temporary > flooding” over a new link is not needed. not if you do flooding on every link that comes up. If you want to be smarter, then you need to selectively enable flooding only under specific conditions and that must be done from both sides of the new link. > > > > 3) The extensions to Hello protocols for requesting/signaling > “temporary flooding” for a connection does not work. sorry, but if you see a problem, please provide details, saying above is simply unproductive. > > > > In addition, for signaling the distributed solution/mode or the > centralized solution/mode, a user/operator needs to configure or select > a solution/mode on a node via CLI or other approach first. Which node > should the user/operator use to configure/select a mode? If the > user/operator can only use the leader node in the area to configure, > then it is neither convenient nor reasonable. The leader node in the > area is dynamically generated. But in the distributed mode/solution, > there is no leader selection (i.e., no leader should be generated). there is an area leader in both modes. In distributed mode the area leader is the one that advertises the algorithm that is used by all nodes that participates in dynamic flooding. regards, Peter > > > > draft-cc-lsr-flooding-reduction-01 contains solutions for some of the > above issues, which should be merged based on technical merits. > > > > Best Regards, > > Huaimo > > > > -----Original Message----- > > From: Lsr On Behalf Of Christian Hopps > > Sent: 11 February 2019 16:15 > > To: lsr@ietf.org > > Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.org > > Subject: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + > IPR poll. > > > > > > Hi Folks, > > > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > > > The aim of this document is to describe the problem space and > standardize a way to signal dynamic flooding information. It does not > standardize any specific algorithm for flooding topology creation. > > > > Authors please respond indicating if you are aware of any IPR related to > this work. > > > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that > started as a distributed flooding topology algorithm and morphed into > that plus competing ideas on signaling of flooding topology information. > The intent after adoption of draft-li-lsr-dynamic-flooding-02 is > two-fold. One, the WG can discuss adding any signaling ideas from this > work to the adopted signaling draft (with proper attribution given as > appropriate), and two, for the authors of > draft-cc-lsr-flooding-reduction-01 to publish a new document without the > signaling portion and instead focus on their flooding topology > algorithm. This new focused document can be considered in parallel along > with the other algorithm work that has been proposed. > > > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above > will help us move forward on the solutions. > > > > Thanks, > > Chris & Acee. > > LSR WG Chairs. > > > > _______________________________________________ > > Lsr mailing list > > Lsr@ietf.org > > https://www.ietf.org/mailman/listinfo/lsr > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > From nobody Sun Feb 24 15:14:18 2019 Return-Path: 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 BDA0212D84D; Sun, 24 Feb 2019 15:14:16 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001] 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 CPir3LGv0xm8; Sun, 24 Feb 2019 15:14:14 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id AB30D12D84C; Sun, 24 Feb 2019 15:14:14 -0800 (PST) Received: from tops.chopps.org (047-050-069-038.biz.spectrum.com [47.50.69.38]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPS id C120E604D2; Sun, 24 Feb 2019 18:14:13 -0500 (EST) References: <5316A0AB3C851246A7CA5758973207D463B5858A@sjceml521-mbx.china.huawei.com> <420ed1b5-d849-99cc-bcb0-d159783e4de2@cisco.com> User-agent: mu4e 1.1.0; emacs 26.1 From: Christian Hopps To: Peter Psenak Cc: Huaimo Chen , Christian Hopps , "lsr\@ietf.org" , "lsr-chairs\@ietf.org" , "lsr-ads\@ietf.org" In-reply-to: <420ed1b5-d849-99cc-bcb0-d159783e4de2@cisco.com> Date: Sun, 24 Feb 2019 18:14:12 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Feb 2019 23:14:17 -0000 --=-=-= Content-Type: text/plain; format=flowed Peter Psenak writes: > Huaimo, > > On 24/02/2019 06:34 , Huaimo Chen wrote: >> >> In addition, for signaling the distributed solution/mode or the >> centralized solution/mode, a user/operator needs to configure or select >> a solution/mode on a node via CLI or other approach first. Which node >> should the user/operator use to configure/select a mode? If the >> user/operator can only use the leader node in the area to configure, >> then it is neither convenient nor reasonable. The leader node in the >> area is dynamically generated. But in the distributed mode/solution, >> there is no leader selection (i.e., no leader should be generated). > > there is an area leader in both modes. In distributed mode the area leader is > the one that advertises the algorithm that is used by all nodes that > participates in dynamic flooding. I'd like to suggest that as this point is discussed we are careful to not try and replace the standard configuration mechanisms. Thanks, Chris. > regards, > Peter > >> >> >> >> draft-cc-lsr-flooding-reduction-01 contains solutions for some of the >> above issues, which should be merged based on technical merits. >> >> >> >> Best Regards, >> >> Huaimo >> >> >> >> -----Original Message----- >> >> From: Lsr On Behalf Of Christian Hopps >> >> Sent: 11 February 2019 16:15 >> >> To: lsr@ietf.org >> >> Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.org >> >> Subject: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + >> IPR poll. >> >> >> >> >> >> Hi Folks, >> >> >> >> We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. >> >> >> >> The aim of this document is to describe the problem space and >> standardize a way to signal dynamic flooding information. It does not >> standardize any specific algorithm for flooding topology creation. >> >> >> >> Authors please respond indicating if you are aware of any IPR related to >> this work. >> >> >> >> We also have another draft (draft-cc-lsr-flooding-reduction-01) that >> started as a distributed flooding topology algorithm and morphed into >> that plus competing ideas on signaling of flooding topology information. >> The intent after adoption of draft-li-lsr-dynamic-flooding-02 is >> two-fold. One, the WG can discuss adding any signaling ideas from this >> work to the adopted signaling draft (with proper attribution given as >> appropriate), and two, for the authors of >> draft-cc-lsr-flooding-reduction-01 to publish a new document without the >> signaling portion and instead focus on their flooding topology >> algorithm. This new focused document can be considered in parallel along >> with the other algorithm work that has been proposed. >> >> >> >> Flooding topology creation is seen as a hard problem for which we don't >> expect a one-size-fits-all solution. Taking the steps outlined above >> will help us move forward on the solutions. >> >> >> >> Thanks, >> >> Chris & Acee. >> >> LSR WG Chairs. >> >> >> >> _______________________________________________ >> >> Lsr mailing list >> >> Lsr@ietf.org >> >> https://www.ietf.org/mailman/listinfo/lsr >> >> >> >> _______________________________________________ >> Lsr mailing list >> Lsr@ietf.org >> https://www.ietf.org/mailman/listinfo/lsr >> --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxzJUQACgkQLh2DDte4 MCWPbw//ZiStMxirrtfSUenNAXfAadQChK5I7CDlsLBaVnntvHLDghe1z3nZ9hr8 kvSFNbrYvlOf7zzKO2xvctGmWSfPs4cT6x/SMb6BaHjrP5+fM6uHLyU9GIr7z0R5 zByE04x7oDu7WibGnoBCYmERlu5SaMelon9GL6te85SfbAFAOa7ySziG3CBG+oWB pQxZaCXogi11Fa/VWVnhq/rWKc+SRurE+2fZAYFTtSUFC/ZNd4oTRNDNlWwJWern rzoDVkifFUFID4aeQH+SD9G72AFSoyQNkCRgRkj6Xw3sN/OFsQZ2CtQFcdXpvaRL 9KU7cf5pFiunnn+swXd34maDOKq3mWC09fANeSEtk4Ay1ztybvc8UBWnbhk80sfd 6ZfU/AMHTqrejv6in6qJsorwzCGSde6H/b5v1gfs0If7d8SsUNjB4oFzIw7B01gK xQkpVOr4RoUvAWySvaIUnhwbw89fJx8X7LiUGlQEPXBruLEtg3IAjiMVeY1jBj8d hZjkDMGILau3LkX87BMU6Jg034Ho0ZZGLeRCPTz16OWhmZRWtSuqxiDAAczIfrOH 8YYkZCcyEUXJet7uG6w/Kg2Nt+JZfyUzcqL6ZmMuXrLKEchSspipj3N7ULgR7BOJ tdaNnSlcXyWxOuEm3QsY1vf1BWRTI6iCD30CmnT5CBJqW4DBkmU= =qHMi -----END PGP SIGNATURE----- --=-=-=-- From nobody Sun Feb 24 18:19:20 2019 Return-Path: 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 893A0128701; Sun, 24 Feb 2019 18:19:18 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 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_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 33aGJpHSUjhL; Sun, 24 Feb 2019 18:19:16 -0800 (PST) Received: from mail-lj1-x22c.google.com (mail-lj1-x22c.google.com [IPv6:2a00:1450:4864:20::22c]) (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 F27DF1200D8; Sun, 24 Feb 2019 18:19:15 -0800 (PST) Received: by mail-lj1-x22c.google.com with SMTP id z7so5826160lji.0; Sun, 24 Feb 2019 18:19:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=vl99PPen+43PbtoZNG6m317V1BrmLfCjKvlG+4qQ4Q0=; b=NyoeFqPVlSXimHRJANjxIS/FnpGd1YpaJcHf9sHNTeKpqvMhQK+uMhPZctNQiSLBHL IemxUP72A6OPL4O1wkAUO7sUtZYvFfdmhvWhbtYwHppmkAa0gf8+OBtJjehZV0fYVCNQ OqiHVEuKM7CIhDIoB2VTlwWQ60tD/7e/x1qJOOWmo7RKNX1Brx7QNiUdZhbkl35fl3L6 lqaiXy3kc3Ejqu+dRnUdH+U0Q1HTVMMaI+8CEgIimAGCPin5TwwkYBhmrtyEermucmIK KcWZH0GH1UJkUip7thA1qW6LAmXGLwtHYOEk2Eik974QaGnSmE725c5dme+jenXhw4uM fFfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=vl99PPen+43PbtoZNG6m317V1BrmLfCjKvlG+4qQ4Q0=; b=NFgnN4eGmZlHna0ii0MFgf7417T4lOXhavmAGkLQ1zh4x+FgkJcXhnwa9Zp4Avw5TS F6isiqrNxj5F+C4tCMworAt7NfBFY4WY7+Sj81UVKledV+ZELcsgK/2Vu0/BcsVgISFs RMhCBhiTsn5SUkVLAA7VZOZyUvFjXtYV7Tuqb5h1otNblbJgvo3galEF3hLQHTwQLRHM 2GNfq8S05YKHYk185CJPhO8sgs4EJhcufsa0ZTgXEM9Fn7AEAtp+SNlVh5P6EwxH7zcv 6XwRLTO9nY5My9T9BR2fuhZjl9CJYisnChUolAGdmhciBwCP5uO1CQGj9LJm+m95ebfA Jr5g== X-Gm-Message-State: AHQUAuZOtqrfQ9Brmkgj73uZjqj+BNZNOzYB6xyVwYhoGUb7OyRSc+WF mNnme9hUK4mB04Zqz4inN0UEvF+3GxTrV+nZaBIwWA== X-Google-Smtp-Source: AHgI3IYXkLaIu4FKAGUxnCpNolBRmY2odH6gm9x/gnZEBMB6tI7RRmol3K7osaZZVwayZx6feEVkvYbjYx6BjezSLGs= X-Received: by 2002:a2e:a28f:: with SMTP id k15mr8658252lja.160.1551061153789; Sun, 24 Feb 2019 18:19:13 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Sri Date: Sun, 24 Feb 2019 18:18:47 -0800 Message-ID: To: Christian Hopps Cc: "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Content-Type: multipart/alternative; boundary="00000000000018baa80582ae9146" Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2019 02:19:19 -0000 --00000000000018baa80582ae9146 Content-Type: text/plain; charset="UTF-8" Support. - Sri On Mon, Feb 11, 2019 at 2:47 AM Christian Hopps wrote: > > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > The aim of this document is to describe the problem space and standardize > a way to signal dynamic flooding information. It does not standardize any > specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to > this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that > started as a distributed flooding topology algorithm and morphed into that > plus competing ideas on signaling of flooding topology information. The > intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, > the WG can discuss adding any signaling ideas from this work to the adopted > signaling draft (with proper attribution given as appropriate), and two, > for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new > document without the signaling portion and instead focus on their flooding > topology algorithm. This new focused document can be considered in parallel > along with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above will > help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > --00000000000018baa80582ae9146 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Support.

-
Sri
On Mon, F= eb 11, 2019 at 2:47 AM Christian Hopps <chopps@chopps.org> wrote:

Hi Folks,

We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02.=

The aim of this document is to describe the problem space and standardize a= way to signal dynamic flooding information. It does not standardize any sp= ecific algorithm for flooding topology creation.

Authors please respond indicating if you are aware of any IPR related to th= is work.

We also have another draft (draft-cc-lsr-flooding-reduction-01) that starte= d as a distributed flooding topology algorithm and morphed into that plus c= ompeting ideas on signaling of flooding topology information. The intent af= ter adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG c= an discuss adding any signaling ideas from this work to the adopted signali= ng draft (with proper attribution given as appropriate), and two, for the a= uthors of draft-cc-lsr-flooding-reduction-01 to publish a new document with= out the signaling portion and instead focus on their flooding topology algo= rithm. This new focused document can be considered in parallel along with t= he other algorithm work that has been proposed.

Flooding topology creation is seen as a hard problem for which we don't= expect a one-size-fits-all solution. Taking the steps outlined above will = help us move forward on the solutions.

Thanks,
Chris & Acee.
LSR WG Chairs.
_______________________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/mailman/listinfo/lsr
--00000000000018baa80582ae9146-- From nobody Sun Feb 24 19:40:23 2019 Return-Path: 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 93EDF12D4F0; Sun, 24 Feb 2019 19:40:21 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 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_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 wjTbQEkMRnTk; Sun, 24 Feb 2019 19:40:19 -0800 (PST) Received: from mail-pf1-x434.google.com (mail-pf1-x434.google.com [IPv6:2607:f8b0:4864:20::434]) (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 E449E130EC6; Sun, 24 Feb 2019 19:40:18 -0800 (PST) Received: by mail-pf1-x434.google.com with SMTP id g6so3784808pfh.13; Sun, 24 Feb 2019 19:40:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=qMDfJ9tvTCU+yPUwaS9g4f+poHj5TaamHiaBJptm3hY=; b=XXeeOz/wBci71SxmJc3RTrVCaT46btP8IfmkRtafm7sOb5ma9sY1OOEeAEpq7a1+sZ 8UYY6uvTQKFHiuza9BcvG6MZxhVNv2bGhyxGzzxkJ87piilpOanof8Ag3dCaIjlrDWBZ e/c3EubHYGd1MbAAQTAElWqNQaqU03NXm4D1bYS1wa6qt1YumCU/qosyjl2wk+x9xEH0 phHiKa7Z+ZtTvYIgLVNxRQy+yxm2vjUjkJMfirDrred5WWHVi0wcvlFoNg8T4qIXhBYL 6P+247VUpm1JiRwGBDfRn13o0F+U3tmT+6kODwc8Qbi4GZcablXJw1MVJCivmtPA9sF/ J5/g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=qMDfJ9tvTCU+yPUwaS9g4f+poHj5TaamHiaBJptm3hY=; b=eFFv4Lrd+sy+TYBICUhj3fbg43r0IZRc3OU32Zi0j6qrbcS9h+rR6CQqflPBZuTk/W ZQojaTQpfGNdObQ8jtKb8DZySC6e8wBMJuTBg+3N4PnOxEf6aof/PAB7L+ENwkOGnqjj ujJe682D00YIwxJ8aDwvPePvKM5vh7sJadm+T4qyWTT0FPJkXxjNv3rWbivzdqLyIb3l vdadzAhMu/zaCDag1lzNfeyddkxgtA9+ELVml+CsCI1FApdjvqdzXuIXsay+eu4En2sI VtHLhcNPiJ/XzCTvne0Isgf9M44IjX8PDTKBp/uhV89t59taOv7oqjP3Lm6f9Rrr/g/J ZYOg== X-Gm-Message-State: AHQUAuatEhQNrJA0KA2Nrl2FqJIcmpGX+TY2FlR1+93NQWDu6EXhCMlE 8yQoxRfSCS91c9Y7FqNVgxk= X-Google-Smtp-Source: AHgI3IYE6KUQnafxhFwvqjGw1p7TT/dtcpbH7Jh6mgP2MG7Yiuq0GfJ7CT92HZuRnNfc1NkEU3R4Cg== X-Received: by 2002:a63:6e02:: with SMTP id j2mr16340320pgc.229.1551066018147; Sun, 24 Feb 2019 19:40:18 -0800 (PST) Received: from [192.168.1.5] (c-73-158-115-137.hsd1.ca.comcast.net. [73.158.115.137]) by smtp.gmail.com with ESMTPSA id y6sm4202220pfy.87.2019.02.24.19.40.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 24 Feb 2019 19:40:17 -0800 (PST) From: Tony Li Message-Id: <3EB15670-A8B1-41AA-8545-0EB7E82ED02D@gmail.com> Content-Type: multipart/alternative; boundary="Apple-Mail=_D0F4D203-9811-4DBF-9708-F1C74D9F6380" Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Date: Sun, 24 Feb 2019 19:40:16 -0800 In-Reply-To: Cc: Peter Psenak , Huaimo Chen , "lsr-ads@ietf.org" , "lsr-chairs@ietf.org" , "lsr@ietf.org" To: Christian Hopps References: <5316A0AB3C851246A7CA5758973207D463B5858A@sjceml521-mbx.china.huawei.com> <420ed1b5-d849-99cc-bcb0-d159783e4de2@cisco.com> X-Mailer: Apple Mail (2.3445.102.3) Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2019 03:40:21 -0000 --Apple-Mail=_D0F4D203-9811-4DBF-9708-F1C74D9F6380 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii > On Feb 24, 2019, at 3:14 PM, Christian Hopps = wrote: >=20 >> In distributed mode the area leader is >> the one that advertises the algorithm that is used by all nodes that >> participates in dynamic flooding. >=20 > I'd like to suggest that as this point is discussed we are careful to = not try and replace the standard configuration mechanisms. I appreciate the suggestion. The concern is that configuration of the = algorithm selection is extremely challenging. Suppose that an administrator wishes to change algorithms. If manual, individual = configuration is the only possible way, then the network is at risk while the configuration is in progress. At scale, this seemed = inadvisable. A clear, signaled change seemed like a clean and simple synchronization point. Tony --Apple-Mail=_D0F4D203-9811-4DBF-9708-F1C74D9F6380 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii

On Feb 24, 2019, at 3:14 PM, Christian Hopps <chopps@chopps.org> = wrote:

 In distributed mode the = area leader is
the one that advertises the algorithm that = is used by all nodes that
participates in dynamic = flooding.

I'd like to suggest that as this point is discussed we are = careful to not try and replace the standard configuration = mechanisms.


I appreciate the = suggestion. The concern is that configuration of the algorithm selection = is extremely challenging.  Suppose that
an = administrator wishes to change algorithms.  If manual, individual = configuration is the only possible way, then the network is
at risk while the configuration is in progress. At scale, = this seemed inadvisable.  A clear, signaled change seemed like a = clean and
simple synchronization point.

Tony

= --Apple-Mail=_D0F4D203-9811-4DBF-9708-F1C74D9F6380-- From nobody Mon Feb 25 04:35:14 2019 Return-Path: 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 0762E130EEC; Mon, 25 Feb 2019 04:35:12 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, 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 72jrsh3OdEMt; Mon, 25 Feb 2019 04:35:09 -0800 (PST) Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by ietfa.amsl.com (Postfix) with ESMTP id 948AB1271FF; Mon, 25 Feb 2019 04:35:09 -0800 (PST) Received: from tops.chopps.org (047-050-069-038.biz.spectrum.com [47.50.69.38]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPS id ECBF0604D1; Mon, 25 Feb 2019 07:35:08 -0500 (EST) References: User-agent: mu4e 1.1.0; emacs 26.1 From: Christian Hopps To: "lsr\@ietf.org" Cc: chopps@chopps.org, "lsr-ads\@ietf.org" , "lsr-chairs\@ietf.org" In-reply-to: Date: Mon, 25 Feb 2019 07:35:08 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2019 12:35:12 -0000 --=-=-= Content-Type: text/plain; format=flowed The support was strong for adoption -- the draft-li-lsr-dynamic-flooding is adopted as a WG document. Authors please re-issue this document using the new name 'draft-ietf-lsr-dynamic-flooding'. We will probably need to reduce the front-page author list. Normally this needs to be 5 or less authors, or justification is required prior to publication. Thanks, Chris & Acee LSR WG Chairs. Christian Hopps writes: > Hi Folks, > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02. > > The aim of this document is to describe the problem space and standardize a way to signal dynamic flooding information. It does not standardize any specific algorithm for flooding topology creation. > > Authors please respond indicating if you are aware of any IPR related to this work. > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that started as a distributed flooding topology algorithm and morphed into that plus competing ideas on signaling of flooding topology information. The intent after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG can discuss adding any signaling ideas from this work to the adopted signaling draft (with proper attribution given as appropriate), and two, for the authors of draft-cc-lsr-flooding-reduction-01 to publish a new document without the signaling portion and instead focus on their flooding topology algorithm. This new focused document can be considered in parallel along with the other algorithm work that has been proposed. > > Flooding topology creation is seen as a hard problem for which we don't expect a one-size-fits-all solution. Taking the steps outlined above will help us move forward on the solutions. > > Thanks, > Chris & Acee. > LSR WG Chairs. --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEm56yH/NF+m1FHa6lLh2DDte4MCUFAlxz4PwACgkQLh2DDte4 MCWGlA/+MPgfPuqWf6YFEbQjeTnAinwejQna/Jl/UF4vKlz8q0A3UaFBJXeQefGW 2P89fRT/nSuzyHBRJSHvx6P7BK25L4FOZP7dmX18Rczq2qJeuaQwl8gg2VMrAXT7 keBQTvVlZp2kchQSGArf6xqFdGsPTTIY8XUF8ThRHHi+thuJHYnoMOucZ06o97wA 21aYVK/Zuxip43KPzuNVCaLnlNv4YDX7o38K5rPt5d0w4+o8nwv70aY1nKgNKPia gZ05+KtWLgRdKVvkLWgj0Cx+alGmqYM4Kd7st+5ZHNrfPPJlJMkpJZg7Ea2tOkv7 LGOaLCPHM03jSzb4BYKgcC5zVL9VSvUn9jZelI5ttvJfbtbWL9qfZqlOFVx0Kfn0 l/Ys2Z93rzJC8EyWtf1n6IZn/iABE+JyUpUF2g6nQyGLVRfbJcRKRtQfWX7IEM00 XJDB9ZLjuCg6G9oAP/lueYqtpYlJMWMfTEDibjjrRF9i5tDpHVxk10NEDXRoh9M8 Vu3nOHT3FK5h/TFh6xwTi7auhjtpVOH/xUpPRCaBnHrygNd/AjbQZZaYidlb1W6S lWU46JTEtu1M0CpprSxnzHD0nvYaUTr0cvbNqDHKe5zqxhTxpgNmy2Thwy+SyLch tyF3XAzUMo0IGpYBkgXYgSU02PGgY1PjllQoDcl7ZXIbu2NCKY8= =6FaW -----END PGP SIGNATURE----- --=-=-=-- From nobody Mon Feb 25 06:52:06 2019 Return-Path: X-Original-To: lsr@ietf.org Delivered-To: lsr@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 44D22130F05; Mon, 25 Feb 2019 06:52:05 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: IETF Secretariat To: , , X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <155110632527.3497.3762384507642400356.idtracker@ietfa.amsl.com> Date: Mon, 25 Feb 2019 06:52:05 -0800 Archived-At: Subject: [Lsr] The LSR WG has placed draft-li-lsr-dynamic-flooding in state "Adopted by a WG" X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2019 14:52:05 -0000 The LSR WG has placed draft-li-lsr-dynamic-flooding in state Adopted by a WG (entered by Christian Hopps) The document is available at https://datatracker.ietf.org/doc/draft-li-lsr-dynamic-flooding/ From nobody Mon Feb 25 07:57:43 2019 Return-Path: X-Original-To: lsr@ietf.org Delivered-To: lsr@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 5D840130EF9; Mon, 25 Feb 2019 07:57:33 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: lsr@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.92.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: lsr@ietf.org Message-ID: <155111025325.10625.7884032458006576628@ietfa.amsl.com> Date: Mon, 25 Feb 2019 07:57:33 -0800 Archived-At: Subject: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-00.txt X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2019 15:57:34 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Link State Routing WG of the IETF. Title : Dynamic Flooding on Dense Graphs Authors : Tony Li Peter Psenak Les Ginsberg Tony Przygienda Dave Cooper Luay Jalil Srinath Dontula Filename : draft-ietf-lsr-dynamic-flooding-00.txt Pages : 37 Date : 2019-02-25 Abstract: Routing with link state protocols in dense network topologies can result in sub-optimal convergence times due to the overhead associated with flooding. This can be addressed by decreasing the flooding topology so that it is less dense. This document discusses the problem in some depth and an architectural solution. Specific protocol changes for IS-IS, OSPFv2, and OSPFv3 are described in this document. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-lsr-dynamic-flooding/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-lsr-dynamic-flooding-00 https://datatracker.ietf.org/doc/html/draft-ietf-lsr-dynamic-flooding-00 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Tue Feb 26 12:01:57 2019 Return-Path: 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 C261F12F1A2 for ; Tue, 26 Feb 2019 12:01:56 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 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_PASS=-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 aV2iO5orTshh for ; Tue, 26 Feb 2019 12:01:55 -0800 (PST) Received: from mail-it1-x12e.google.com (mail-it1-x12e.google.com [IPv6:2607:f8b0:4864:20::12e]) (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 4180B12958B for ; Tue, 26 Feb 2019 12:01:55 -0800 (PST) Received: by mail-it1-x12e.google.com with SMTP id v83so6174923itf.1 for ; Tue, 26 Feb 2019 12:01:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=DjcxlV4q2vE2/26qbYG3l+4JRS/RWtFtiwlFzCazYaY=; b=qy+ZjCFxhcTwhlxYwED4WordCjt0JvmRAf55ig4i/38+asYTRYpVunl70U25hkUNVA EbrIJm+UW7K+IKYl+Sm+lowrjArOqv04ZBHIWdH0k7BjQMmnufHkXFVzqDaH8/jeeivC c4rgPT3kYty/W1FzmCE8IGxkkCWw9pgaToQ0R2V9+JGM5pzoKI70vNu0sPIVaiQh2gTV 50JZmDlV353SJ8s7tODOOMURleDWeNTp0Kdc9gVW8BnRdqrGzfAvIuemzLMvv73Mk8ch fIYvxxfNI+7ncuw3i/Y8aopOMBQvwaooe/jXMw0q4UPdkz/gQg3JL7VMur4pBXH33V0t 4HPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=DjcxlV4q2vE2/26qbYG3l+4JRS/RWtFtiwlFzCazYaY=; b=SAP6PebjZi2f8jsHj2cxEsSETJHGaeVVqH1T5hFGnZoUckhuxbAtPpu3gpJf1NT/QX n34e9G43nHCGvcvOwktVhxOlGecKlb8O0J8mV0clAh1aEI6VlF1fk/wNfIZjRCFu+sWV EGQLPr2mR1m4Mt5DewXw92NZM5AgYEPDvkb++uBh30wlWxhphELKhgCC6ebs+NXkMzOF HUT84dZ//ANnnjMIsx8CsupZCjrFHivFbf2L8IvviRf3GbXgPMmwHKzAjNWk5yY+outn Wyr/I0lY/u+bGM2aDoxNeo3XA+wvpbDogQSfKb6CIRVUg2jMjoxrj/0GOYRb2MReFM3k /OIg== X-Gm-Message-State: AHQUAuaxQmw7lxDZPEl3yij00kx0vKM4Yw0mdIrUhiSac70hFsY5JNDN 1pwWmL0pNXsPwfWMakaXIF702ovttN87DldH29qxEzs= X-Google-Smtp-Source: AHgI3IY6WvhK9fM6pazv0lS0MA4SUqLauqxuTfOyxvPanj5sgAbg13NXQjpUiSdKNAMPe9OIicaH1R9JvoNLQT/Di04= X-Received: by 2002:a24:97d7:: with SMTP id k206mr3733446ite.167.1551211314147; Tue, 26 Feb 2019 12:01:54 -0800 (PST) MIME-Version: 1.0 From: Yingzhen Qu Date: Tue, 26 Feb 2019 12:01:42 -0800 Message-ID: To: lsr@ietf.org Content-Type: multipart/alternative; boundary="00000000000059f5680582d1877c" Archived-At: Subject: [Lsr] IETF 104 LSR Meeting Call fro Agenda Items X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Feb 2019 20:01:57 -0000 --00000000000059f5680582d1877c Content-Type: text/plain; charset="UTF-8" Hi all, According to the preliminary agenda, the LSR (Link State Routing) WG will be meeting on Wednesday, March 27th from 11:20 to 13:20, and Thursday March 28th from 16:10 to 18:10. Please send us (lsr-chairs@ietf.org) any requests for presentation slots. Thanks, Acee, Chris and Yingzhen --00000000000059f5680582d1877c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi all,

=C2=A0

According to the preliminary agenda, the LSR = (Link State Routing) WG will be meeting on Wednesday, March 27th from 11:20 to 13:20, and Thursday March 28= th from 16:10 to 18:10.

=C2=A0

Please send us (lsr-chairs@ietf.org<= /font>) any requests for presentation slots.

=C2=A0

Thanks,

Acee, Chris and Yingzhen

--00000000000059f5680582d1877c-- From nobody Tue Feb 26 21:15:59 2019 Return-Path: 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 255F512D84C; Tue, 26 Feb 2019 21:15:57 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.189 X-Spam-Level: X-Spam-Status: No, score=-4.189 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, T_KAM_HTML_FONT_INVALID=0.01, 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 s1ZDrjis5xaK; Tue, 26 Feb 2019 21:15:54 -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 0579812870E; Tue, 26 Feb 2019 21:15:54 -0800 (PST) Received: from LHREML712-CAH.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id D41377A1F98795EBD6D7; Wed, 27 Feb 2019 05:15:51 +0000 (GMT) Received: from SJCEML701-CHM.china.huawei.com (10.208.112.40) by LHREML712-CAH.china.huawei.com (10.201.108.35) with Microsoft SMTP Server (TLS) id 14.3.408.0; Wed, 27 Feb 2019 05:15:51 +0000 Received: from SJCEML521-MBX.china.huawei.com ([169.254.1.111]) by SJCEML701-CHM.china.huawei.com ([169.254.3.242]) with mapi id 14.03.0415.000; Tue, 26 Feb 2019 21:15:46 -0800 From: Huaimo Chen To: Peter Psenak , Christian Hopps , "lsr@ietf.org" CC: "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" Thread-Topic: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. Thread-Index: AQHUwfc3rlPy0Ul4REi1Ut4/82BOw6XsOGoAgAJCW3CAAWolgIADTJLA Date: Wed, 27 Feb 2019 05:15:46 +0000 Message-ID: <5316A0AB3C851246A7CA5758973207D463B59041@sjceml521-mbx.china.huawei.com> References: <5316A0AB3C851246A7CA5758973207D463B5858A@sjceml521-mbx.china.huawei.com> <420ed1b5-d849-99cc-bcb0-d159783e4de2@cisco.com> In-Reply-To: <420ed1b5-d849-99cc-bcb0-d159783e4de2@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.212.245.174] Content-Type: multipart/alternative; boundary="_000_5316A0AB3C851246A7CA5758973207D463B59041sjceml521mbxchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Feb 2019 05:15:57 -0000 --_000_5316A0AB3C851246A7CA5758973207D463B59041sjceml521mbxchi_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Peter, > -----Original Message----- > From: Peter Psenak [mailto:ppsenak@cisco.com] > Sent: Sunday, February 24, 2019 1:47 PM > To: Huaimo Chen ; Christian Hopps ; lsr@ietf.org > Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org > Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 = + IPR poll. > > Huaimo, > > On 24/02/2019 06:34 , Huaimo Chen wrote: > > Some issues with draft-li-lsr-dynamic-flooding-02 not fully addressed > > are briefed below. > > > > > > > > 1) There is no concrete procedure/method for fault tolerance > > to multiple failures. When multiple failures happen and split the > > flooding topology, the convergence time will be increased > > significantly without fault tolerance. The longer the convergence > > time, the more the traffic lose. > > there is a solution for multiple failures - see section 6.7.11. > Section 6.7.11 just briefly mentions that the edges of split parts will det= ermine and repair the split after the split of the flooding topology happen= s. However, there is not any details or description on how to determine or = repair the split. This is not useful for implementers. > > > > > > > > 2) The extensions to Hello protocols for enabling "temporary > flooding" over a new link is not needed. > > not if you do flooding on every link that comes up. If you want to be sma= rter, then you need to > selectively enable flooding only under specific conditions and that must = be done from both sides of > the new link. There are only a limited number of conditions (or cases). In each conditio= n/case, it is deterministic whether we need to enable "temporary flooding" = for a new link when it is up. Thus there is no need for any extensions to = Hello protocols for enabling "temporary flooding" on a new link. For example, suppose that we have a current flooding topology containing al= l live nodes in an area, when a new link comes up, we may just have two con= ditions/cases. One condition/case is that the new link is attached to a new= node not on the current flooding topology. In this condition/case, the new= link needs to be enabled for "temporary flooding" after it is up. The othe= r condition/case is that the new link is attached to nodes on the current f= looding topology. In this condition/case, there is no need to enable "tempo= rary flooding" on the link. > > > > > > 3) The extensions to Hello protocols for requesting/signaling > > "temporary flooding" for a connection does not work. > > sorry, but if you see a problem, please provide details, saying above is > simply unproductive. "The nodes ... will try to repair the flooding topology locally by enabling= temporary flooding towards the nodes that they consider disconnected from = the flooding topology ..." The above quoted text is from draft-li-lsr-dynamic-flooding-02, where "enab= ling temporary flooding towards the nodes" is to request/signal "temporary = flooding" for a connection to connect partitioned/disconnected flooding top= ology into one through the extensions to Hello protocols described in draft= -li-lsr-dynamic-flooding-02. Right? The extensions to Hello protocols for requesting/signaling "temporary flood= ing" for a connection to connect partitioned/disconnected flooding topology= into one does not work since the connection may have two or more hops and = a Hello packet may get lost. > > > > > > > > In addition, for signaling the distributed solution/mode or the > > centralized solution/mode, a user/operator needs to configure or select > > a solution/mode on a node via CLI or other approach first. Which node > > should the user/operator use to configure/select a mode? If the > > user/operator can only use the leader node in the area to configure, > > then it is neither convenient nor reasonable. The leader node in the > > area is dynamically generated. But in the distributed mode/solution, > > there is no leader selection (i.e., no leader should be generated). > > there is an area leader in both modes. In distributed mode the area > leader is the one that advertises the algorithm that is used by all > nodes that participates in dynamic flooding. > It is not convenient for a user/operator to configure on an area leader sin= ce the leader is dynamically selected. How do you address this? After the user/operator does some configurations on the (designated) leader= , will the backup leader takes over the configurations after the designated= leader is down? Best Regards, Huaimo > regards, > Peter > > > > draft-cc-lsr-flooding-reduction-01 contains solutions for some of the > above issues, which should be merged based on technical merits. > > > > Best Regards, > > Huaimo > > > > -----Original Message----- > > From: Lsr > On Behalf O= f Christian Hopps > > Sent: 11 February 2019 16:15 > > To: lsr@ietf.org > > Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.org > > Subject: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + > IPR poll. > > > > > > Hi Folks, > > > > We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-0= 2. > > > > The aim of this document is to describe the problem space and > standardize a way to signal dynamic flooding information. It does not > standardize any specific algorithm for flooding topology creation. > > > > Authors please respond indicating if you are aware of any IPR related to > this work. > > > > We also have another draft (draft-cc-lsr-flooding-reduction-01) that > started as a distributed flooding topology algorithm and morphed into > that plus competing ideas on signaling of flooding topology information. > The intent after adoption of draft-li-lsr-dynamic-flooding-02 is > two-fold. One, the WG can discuss adding any signaling ideas from this > work to the adopted signaling draft (with proper attribution given as > appropriate), and two, for the authors of > draft-cc-lsr-flooding-reduction-01 to publish a new document without the > signaling portion and instead focus on their flooding topology > algorithm. This new focused document can be considered in parallel along > with the other algorithm work that has been proposed. > > > > Flooding topology creation is seen as a hard problem for which we don't > expect a one-size-fits-all solution. Taking the steps outlined above > will help us move forward on the solutions. > > > > Thanks, > > Chris & Acee. > > LSR WG Chairs. > > > > _______________________________________________ > > Lsr mailing list > > Lsr@ietf.org > > https://www.ietf.org/mailman/listinfo/lsr > > > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > --_000_5316A0AB3C851246A7CA5758973207D463B59041sjceml521mbxchi_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Peter,

 

> -----Original Message-----
> From: Peter Psenak [mailto:ppsenak@cisco.com]
> Sent: Sunday, February 24, 2019 1:47 PM
> To: Huaimo Chen <huaimo.chen@huawei.com>; Christian Hopps <ch= opps@chopps.org>; lsr@ietf.org
> Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org
> Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-= 02 + IPR poll.

> 

> Huaimo,

> 

> On 24/02/2019 06:34 , Huaimo Chen wrote:

> > Some issues with draft-li-lsr-dynamic-floo= ding-02 not fully addressed

> > are briefed below.

> >

> >

> >

> > 1)      &nbs= p;    There is no concrete procedure/method for fault tolera= nce

> > to multiple failures. When multiple failur= es happen and split the

> > flooding topology, the convergence time wi= ll be increased

> > significantly without fault tolerance. The= longer the convergence

> > time, the more the traffic lose.

> 

> there is a solution for multiple failures - see= section 6.7.11.

> 

 

Section 6.7.11 just= briefly mentions that the edges of split parts will determine and repair t= he split after the split of the flooding topology happens. However, there i= s not any details or description on how to determine or repair the split. This is not useful for implementers.=

 

> >

> >

> >

> > 2)      &nbs= p;    The extensions to Hello protocols for enabling “= temporary

> flooding” over a new link is not needed.<= o:p>

> 

> not if you do flooding on every link that comes= up. If you want to be smarter, then you need to

> selectively enable flooding only under specific= conditions and that must be done from both sides of

> the new link.

 

There are only a limited number of conditions (or ca= ses).  In each condition/case, it is deterministic whether we need to = enable “temporary flooding” for a new link when it is up. = Thus there is no need for any extensions to Hello protocols for enabling “temporary flooding” on a new link.

 

For example, suppose that we have a current flooding= topology containing all live nodes in an area, when a new link comes up, w= e may just have two conditions/cases. One condition/case is that the new li= nk is attached to a new node not on the current flooding topology. In this condition/case, the new link needs = to be enabled for “temporary flooding” after it is up. The othe= r condition/case is that the new link is attached to nodes on the current f= looding topology. In this condition/case, there is no need to enable “temporary flooding” on the link.

 

> >

> >

> > 3)      &nbs= p;    The extensions to Hello protocols for requesting/signa= ling

> > “temporary flooding” for a con= nection does not work.

> 

> sorry, but if you see a problem, please provide= details, saying above is

> simply unproductive.

 

“The nodes … will try to repair the = flooding topology locally by enabling temporary flooding towards the nodes = that they consider disconnected from the flooding topology ...”

 

The above quoted text is from draft-li-lsr-dynam= ic-flooding-02, where “enabling temporary flooding towards the nodes&= #8221; is to request/signal “temporary flooding” for a connecti= on to connect partitioned/disconnected flooding topology into one through the= extensions to Hello protocols described in draft-li-lsr-dynamic-flooding-02. Right?

 

The extensions to Hello protocols for requesting= /signaling “temporary flooding” for a connection to connect par= titioned/disconnected flooding topology into one does not work since the connection may have two or more hops and a Hello packet may= get lost.

 

> >

> >

> >

> > In addition, for signaling the distributed= solution/mode or the

> > centralized solution/mode, a user/operator= needs to configure or select

> > a solution/mode on a node via CLI or other= approach first. Which node

> > should the user/operator use to configure/= select a mode?  If the

> > user/operator can only use the leader node= in the area to configure,

> > then it is neither convenient nor reasonab= le. The leader node in the

> > area is dynamically generated. But in the = distributed mode/solution,

> > there is no leader selection (i.e., no lea= der should be generated).

> 

> there is an area leader in both modes. In distr= ibuted mode the area

> leader is the one that advertises the algorithm= that is used by all

> nodes that participates in dynamic flooding.

> 

 

It is not convenient for a user/operator to configur= e on an area leader since the leader is dynamically selected. How do you ad= dress this?

 

After the user/operator does some configurations on = the (designated) leader, will the backup leader takes over the configuratio= ns after the designated leader is down?

 

Best Regards,

Huaimo

 

> regards,

> Peter

 

> 

> 

> 

> draft-cc-lsr-flooding-reduction-01 contains sol= utions for some of the

> above issues, which should be merged based on t= echnical merits.

> 

> 

> 

> Best Regards,

> 

> Huaimo

> 

> 

> 

> -----Original Message-----

> 

> From: Lsr <lsr-bounces@ie= tf.org> On Behalf Of Christian Hopps

> 

> Sent: 11 February 2019 16:15

> 

> To: lsr@ietf.org

> 

> Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; chopps@chopps.org

> 

> Subject: [Lsr] WG Adoption Call for draft-li-ls= r-dynamic-flooding-02 +

> IPR poll.

> 

> 

> 

> 

> 

> Hi Folks,

> 

> 

> 

> We are starting a 2 week adoption call on draft= -li-lsr-dynamic-flooding-02.

> 

> 

> 

> The aim of this document is to describe the pro= blem space and

> standardize a way to signal dynamic flooding in= formation. It does not

> standardize any specific algorithm for flooding= topology creation.

> 

> 

> 

> Authors please respond indicating if you are aw= are of any IPR related to

> this work.

> 

> 

> 

> We also have another draft (draft-cc-lsr-floodi= ng-reduction-01) that

> started as a distributed flooding topology algo= rithm and morphed into

> that plus competing ideas on signaling of flood= ing topology information.

> The intent after adoption of draft-li-lsr-dynam= ic-flooding-02 is

> two-fold. One, the WG can discuss adding any si= gnaling ideas from this

> work to the adopted signaling draft (with prope= r attribution given as

> appropriate), and two, for the authors of<= /o:p>

> draft-cc-lsr-flooding-reduction-01 to publish a= new document without the

> signaling portion and instead focus on their fl= ooding topology

> algorithm. This new focused document can be con= sidered in parallel along

> with the other algorithm work that has been pro= posed.

> 

> 

> 

> Flooding topology creation is seen as a hard pr= oblem for which we don't

> expect a one-size-fits-all solution. Taking the= steps outlined above

> will help us move forward on the solutions.

> 

> 

> 

> Thanks,

> 

> Chris & Acee.

> 

> LSR WG Chairs.

> 

> 

> 

> _______________________________________________=

> 

> Lsr mailing list

> 

> Lsr@ietf.org

> 

> https://www.ie= tf.org/mailman/listinfo/lsr

> 

> 

> 

> _______________________________________________=

> Lsr mailing list

> Lsr@ietf.org

> https://www.ie= tf.org/mailman/listinfo/lsr

> 

--_000_5316A0AB3C851246A7CA5758973207D463B59041sjceml521mbxchi_-- From nobody Tue Feb 26 23:07:16 2019 Return-Path: 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 71CFE130E66; Tue, 26 Feb 2019 23:07:14 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 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_PASS=-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 2qneo5HIGlsv; Tue, 26 Feb 2019 23:07:12 -0800 (PST) Received: from mail-pg1-x52a.google.com (mail-pg1-x52a.google.com [IPv6:2607:f8b0:4864:20::52a]) (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 D16FE12F19D; Tue, 26 Feb 2019 23:07:11 -0800 (PST) Received: by mail-pg1-x52a.google.com with SMTP id r124so7498099pgr.3; Tue, 26 Feb 2019 23:07:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=sJSYdbENToju0bqJ2D4O4HVTN4uMsX1YAw7yG+ybZSI=; b=G4QG8Dp/JDWhEIGWUETa1QQP/jGRO1n7zopEEb6fja66Ow0D++294GgDuZBTqsfIV1 Vohx3BHL2pSP/81vciJCQtSCmYCe9Bv/aOA1+uSGFVauZf03xYVaDvCvhKsBEWyIa/cc XhqiLL5lkXU9p4xXvkl6oV02J53r3y4fekvtsIJ4emjAa92s01ZomZ5qd66A+9FQ/aoA GcvDQ69c1VdUDda0OhHwjLrNjm881CvgyJp0CeDqjUraC3kvXh8qA5QVRQ5svTuTvxq5 Nqg8EJdgFVhms5SpzOfEQKYVXyXYT/1BAvGp4LoeVkMnqYTDIpRcrCItVD9tXzNihcWo RNWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=sJSYdbENToju0bqJ2D4O4HVTN4uMsX1YAw7yG+ybZSI=; b=mFGBuNMKhb+WfYQ2bjOucjR7H2jFmM5pmNnKzdUqeNAIjlAbVrsiMOXo2C+14BK9J4 6qSHARzftq/mLd2pLXqPR+NcByhZ5R7yjzYbfUEChv4v+tHNnzb2zDyRMkF52OKpF5sy zjfbOEpoAdh1LA3rneRiL1mXiKSSDlUhMr0lq1kIxX6TZTprgpawZV1Ld1wtokVb2tqo 8WblaTLtDjdeJp+8L7t3PdqvLFHX7AkHqpJUkT1ugf+L24KaTFbKhTgCLwgPL8iGlIxR 85ytP1kQ6XPQX57eEmyC4JWpfnbCtheAfxl2ACIWmhkuvX2IayVPDo7ITufYsl/1HfK5 f5Nw== X-Gm-Message-State: AHQUAubNzKBJaraw+kUR3InDg2tkq4X2jUBJvmKiZSsohq5L0RgVAQtq iFo7lVbUUmvJYigh51S3Bik= X-Google-Smtp-Source: AHgI3IYnibEnJOjJtmPPMLIPdra3l7Y9MkItygI77/WragRkBlyHTXPig6qR9QP7ND47j5Ud8bUyPw== X-Received: by 2002:a65:6546:: with SMTP id a6mr1603090pgw.296.1551251231124; Tue, 26 Feb 2019 23:07:11 -0800 (PST) Received: from [10.95.92.155] ([162.210.129.5]) by smtp.gmail.com with ESMTPSA id i4sm7487121pfo.158.2019.02.26.23.07.08 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 26 Feb 2019 23:07:09 -0800 (PST) From: Tony Li Message-Id: <0B4DF2AC-8EE1-41CA-B357-98325067CA30@gmail.com> Content-Type: multipart/alternative; boundary="Apple-Mail=_C1876026-EC08-475B-A4FD-C29BF8B32390" Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Date: Tue, 26 Feb 2019 23:07:06 -0800 In-Reply-To: <5316A0AB3C851246A7CA5758973207D463B59041@sjceml521-mbx.china.huawei.com> Cc: Peter Psenak , Christian Hopps , "lsr@ietf.org" , "lsr-chairs@ietf.org" , "lsr-ads@ietf.org" To: Huaimo Chen References: <5316A0AB3C851246A7CA5758973207D463B5858A@sjceml521-mbx.china.huawei.com> <420ed1b5-d849-99cc-bcb0-d159783e4de2@cisco.com> <5316A0AB3C851246A7CA5758973207D463B59041@sjceml521-mbx.china.huawei.com> X-Mailer: Apple Mail (2.3445.102.3) Archived-At: Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Feb 2019 07:07:14 -0000 --Apple-Mail=_C1876026-EC08-475B-A4FD-C29BF8B32390 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Huaimo, > > > 1) There is no concrete procedure/method for fault = tolerance > > > to multiple failures. When multiple failures happen and split the > > > flooding topology, the convergence time will be increased > > > significantly without fault tolerance. The longer the convergence > > > time, the more the traffic lose. > >=20 > > there is a solution for multiple failures - see section 6.7.11. > >=20 > =20 > Section 6.7.11 just briefly mentions that the edges of split parts = will determine and repair the split after the split of the flooding = topology happens. However, there is not any details or description on = how to determine or repair the split. This is not useful for = implementers. I=E2=80=99m sorry that you don=E2=80=99t find it useful. Determining the = split is trivial: when you receive an IIH, it has a system ID of the = another system in it. If that other system is not currently part of the = flooding topology, then it is quite clear that it is disconnected from = the flooding topology. Repairing the split is done by enabling temporary = flooding on the new link. There is an issue here that we have not yet resolved, which is the rate = that new links should be temporarily added to the flooding topology. = Some believe that adding any new link is the correct thing to do as it = minimizes the recovery time. Others feel that enabling too many links = could cause a flooding collapse, so link addition should be highly = constrained. We are still discussing this and invite the WG=E2=80=99s = opinions. > > > 2) The extensions to Hello protocols for enabling = =E2=80=9Ctemporary > > flooding=E2=80=9D over a new link is not needed. > >=20 > > not if you do flooding on every link that comes up. If you want to = be smarter, then you need to > > selectively enable flooding only under specific conditions and that = must be done from both sides of > > the new link. > =20 > There are only a limited number of conditions (or cases). In each = condition/case, it is deterministic whether we need to enable = =E2=80=9Ctemporary flooding=E2=80=9D for a new link when it is up. Thus = there is no need for any extensions to Hello protocols for enabling = =E2=80=9Ctemporary flooding=E2=80=9D on a new link. We know of only two cases: (1) the neighbor is not part of the flooding = topology and we feel that we can add more temporary flooding. (2) The = neighbor is not part of the flooding topology and we cannot add more = temporary flooding. Obviously, in the case where we want to add temporary flooding, that TLV = is needed in the IIH. =20 > For example, suppose that we have a current flooding topology = containing all live nodes in an area, when a new link comes up, we may = just have two conditions/cases. One condition/case is that the new link = is attached to a new node not on the current flooding topology. In this = condition/case, the new link needs to be enabled for =E2=80=9Ctemporary = flooding=E2=80=9D after it is up. Agreed, which is why we need the TLV. > The other condition/case is that the new link is attached to nodes on = the current flooding topology. In this condition/case, there is no need = to enable =E2=80=9Ctemporary flooding=E2=80=9D on the link. Agreed. Note that there are some additional corner cases. Since the two = neighbors may not have the exact same information, one may consider the = other to be on the flooding topology when in fact it is not. This might = happen in the case of a node reboot. The IIH TLV gives us an explicit = way of signaling, rather than simply guessing and sometimes getting it = wrong. > > > 3) The extensions to Hello protocols for = requesting/signaling > > > =E2=80=9Ctemporary flooding=E2=80=9D for a connection does not = work. > >=20 > > sorry, but if you see a problem, please provide details, saying = above is > > simply unproductive. > =20 > =E2=80=9CThe nodes =E2=80=A6 will try to repair the flooding topology = locally by enabling temporary flooding towards the nodes that they = consider disconnected from the flooding topology ...=E2=80=9D > =20 > The above quoted text is from draft-li-lsr-dynamic-flooding-02, where = =E2=80=9Cenabling temporary flooding towards the nodes=E2=80=9D is to = request/signal =E2=80=9Ctemporary flooding=E2=80=9D for a connection to = connect partitioned/disconnected flooding topology into one through the = extensions to Hello protocols described in = draft-li-lsr-dynamic-flooding-02. Right? > =20 > The extensions to Hello protocols for requesting/signaling = =E2=80=9Ctemporary flooding=E2=80=9D for a connection to connect = partitioned/disconnected flooding topology into one does not work since = the connection may have two or more hops and a Hello packet may get = lost. All adjacencies are a single hop in both IS-IS and OSPF. Yes, Hello = packets may be lost. Fortunately, they are periodically transmitted, = thus the next transmission will also contain the TLV. If IIH=E2=80=99s = are getting lost at a significant rate, then the adjacency will not (and = should not) come up. Thus, the request for temporary flooding will = propagate to the neighbor in all cases that matter. > It is not convenient for a user/operator to configure on an area = leader since the leader is dynamically selected. How do you address = this? No configuration is required. The election algorithm selects the area = leader. The rules are in the draft. An implementation may have a = default priority and a default algorithm setting, so no configuration is = mandatory. If the operator desires a specific node to become area = leader, then configuration may be required to adjust the priority. = FWIW, we have this already working in our implementation. It Just = Works. > After the user/operator does some configurations on the (designated) = leader, will the backup leader takes over the configurations after the = designated leader is down? There is no need for a backup leader. If the area leader is partitioned = from the topology, then leader election is repeated, resulting in a new = leader. Again, no configuration is required. Tony --Apple-Mail=_C1876026-EC08-475B-A4FD-C29BF8B32390 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8

Hi Huaimo,

> > = 1)           There is = no concrete procedure/method for fault tolerance
> > = to multiple failures. When multiple failures happen and split the
> > = flooding topology, the convergence time will be increased
> > = significantly without fault tolerance. The longer the convergence
> > = time, the more the traffic lose.
> 
> = there is a solution for multiple failures - see section 6.7.11.
> 
 
Section = 6.7.11 just briefly mentions that the = edges of split parts will determine and repair the split after the split = of the flooding topology happens. However, there is not any details or = description on how to determine or repair the split. This is not useful = for implementers.


I=E2=80=99m sorry that = you don=E2=80=99t find it useful. Determining the split is trivial: when = you receive an IIH, it has a system ID of the another system in it. If = that other system is not currently part of the flooding topology, then = it is quite clear that it is disconnected from the flooding topology. = Repairing the split is done by enabling temporary flooding on the new = link.

There is an issue here that we = have not yet resolved, which is the rate that new links should be = temporarily added to the flooding topology.  Some believe that = adding any new link is the correct thing to do as it minimizes the = recovery time. Others feel that enabling too many links could cause a = flooding collapse, so link addition should be highly constrained. We are = still discussing this and invite the WG=E2=80=99s = opinions.


> > = 2)           The = extensions to Hello protocols for enabling =E2=80=9Ctemporary
> = flooding=E2=80=9D over a new link is not needed.
> 
> not = if you do flooding on every link that comes up. If you want to be = smarter, then you need to
> selectively enable flooding only under specific = conditions and that must be done from both sides of
> the = new link.
 
There are only a limited number of conditions (or = cases).  In each condition/case, it is deterministic whether we = need to enable =E2=80=9Ctemporary flooding=E2=80=9D for a new link when = it is up.  Thus there is no need for any extensions to Hello = protocols for enabling =E2=80=9Ctemporary flooding=E2=80=9D on a new = link.


We know of only two cases: (1) the neighbor is not = part of the flooding topology and we feel that we can add more temporary = flooding. (2) The neighbor is not part of the flooding topology and we = cannot add more temporary flooding.

Obviously, in the case where we want to add = temporary flooding, that TLV is needed in the IIH.

 
For = example, suppose that we have a current flooding topology containing all = live nodes in an area, when a new link comes up, we may just have two = conditions/cases. One condition/case is that the new link is attached to = a new node not on the current flooding topology. In this condition/case, = the new link needs to be enabled for =E2=80=9Ctemporary flooding=E2=80=9D = after it is up.


Agreed, which is why we = need the TLV.


The other condition/case = is that the new link is attached to nodes on the current flooding = topology. In this condition/case, there is no need to enable = =E2=80=9Ctemporary flooding=E2=80=9D on the = link.


Agreed.

Note = that there are some additional corner cases.  Since the two = neighbors may not have the exact same information, one may consider the = other to be on the flooding topology when in fact it is not.  This = might happen in the case of a node reboot. The IIH TLV gives us an = explicit way of signaling, rather than simply guessing and sometimes = getting it wrong.


> > = 3)           The = extensions to Hello protocols for requesting/signaling
> > = =E2=80=9Ctemporary flooding=E2=80=9D for a connection does not work.
> 
> = sorry, but if you see a problem, please provide details, saying above = is
> = simply unproductive.
 
=E2=80=9CThe nodes =E2=80=A6 will try to = repair the flooding topology locally by enabling temporary flooding = towards the nodes that they consider disconnected from the flooding = topology ...=E2=80=9D
 
The above quoted text is from = draft-li-lsr-dynamic-flooding-02, where =E2=80=9Cenabling temporary = flooding towards the nodes=E2=80=9D is to request/signal =E2=80=9Ctemporar= y flooding=E2=80=9D for a connection to connect partitioned/disconnected = flooding topology into one through the extensions to Hello protocols = described in draft-li-lsr-dynamic-f= looding-02. = Right?
 
The = extensions to Hello protocols for requesting/signaling =E2=80=9Ctemporary = flooding=E2=80=9D for a connection to connect partitioned/disconnected = flooding topology into one does not work since the connection may have = two or more hops and a Hello packet may get = lost.


All adjacencies are a single hop in both IS-IS and = OSPF.  Yes, Hello packets may be lost. Fortunately, they are = periodically transmitted, thus the next transmission will also contain = the TLV.  If IIH=E2=80=99s are getting lost at a significant rate, = then the adjacency will not (and should not) come up.  Thus, the = request for temporary flooding will propagate to the neighbor in all = cases that matter.


It is not = convenient for a user/operator to configure on an area leader since the = leader is dynamically selected. How do you address = this?


No configuration is required.  The election = algorithm selects the area leader.  The rules are in the draft. =  An implementation may have a default priority and a default = algorithm setting, so no configuration is mandatory.  If the = operator desires a specific node to become area leader, then = configuration may be required to adjust the priority.  FWIW, we = have this already working in our implementation.  It Just = Works.


After the = user/operator does some configurations on the (designated) leader, will = the backup leader takes over the configurations after the designated = leader is down?


There is no need for a = backup leader.  If the area leader is partitioned from the = topology, then leader election is repeated, resulting in a new leader. =  Again, no configuration is required.

Tony



= --Apple-Mail=_C1876026-EC08-475B-A4FD-C29BF8B32390-- From nobody Wed Feb 27 00:36:24 2019 Return-Path: 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 88A46130E8A for ; Wed, 27 Feb 2019 00:36:22 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.198 X-Spam-Level: X-Spam-Status: No, score=-4.198 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, UNPARSEABLE_RELAY=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 aOg3RwyEZ3hz for ; Wed, 27 Feb 2019 00:36:19 -0800 (PST) Received: from mxhk.zte.com.cn (mxhk.zte.com.cn [63.217.80.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by 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Subject: Re: [Lsr] =?utf-8?q?Working_Group_Adoption_Poll_for_=22OSPF_Extensio?= =?utf-8?q?n_for_PrefixOriginator=22_-_draft-wang-lsr-ospf-prefix-originat?= =?utf-8?q?or-ext-01?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Feb 2019 08:36:22 -0000 --=====_001_next===== Content-Type: multipart/related; boundary="=====_002_next=====" --=====_002_next===== Content-Type: multipart/alternative; boundary="=====_003_next=====" --=====_003_next===== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 U3VwcG9ydCwgYXMgdGhpcyBkcmFmdCBwcm92aWRlIHVzZWZ1bCBvcmlnaW5pYWwgc291cmNlIHJv dXRlci1pZCBvZiBwcmVmaXgsIGFzIHRoZSBzYW1lIGFzIFJGQzc3OTQuDQoNCg0KRm9yIHRvcG9s b2d5IGRlZHVjaW5nLCBpdCBzZWVtcyB0b28gaGFyZCB0byB3b3JrIGFjY29yZGluZyB0byBjdXJy ZW50IGRlc2NyaXB0aW9uIGluIHRoZSBkb2N1bWVudC4gRm9yIGV4YW1wbGUsIEl0IGlzIGhhcmQg 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DGGEMM402-HUB.china.huawei.com ([10.3.20.210]) with mapi id 14.03.0415.000; Wed, 27 Feb 2019 18:09:18 +0800 From: Huzhibo To: "lsr@ietf.org" , "acee@cisco.com" Thread-Topic: [Lsr] Working Group Adoption Poll for "OSPF Extension for PrefixOriginator" - draft-wang-lsr-ospf-prefix-originator-ext-01 Thread-Index: AQHUzneTdE7Vlb9smEm3wjXb+66DMKXzaxXg Date: Wed, 27 Feb 2019 10:09:18 +0000 Message-ID: <06CF729DA0D6854E8C1E5121AC3330DFADDD8036@dggemm509-mbx.china.huawei.com> References: <201902271636111453989@zte.com.cn> In-Reply-To: <201902271636111453989@zte.com.cn> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.219.232] Content-Type: multipart/alternative; boundary="_000_06CF729DA0D6854E8C1E5121AC3330DFADDD8036dggemm509mbxchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for PrefixOriginator" - draft-wang-lsr-ospf-prefix-originator-ext-01 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X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-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 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 f29gbzb7efK8; Wed, 27 Feb 2019 13:31:42 -0800 (PST) Received: from aer-iport-4.cisco.com (aer-iport-4.cisco.com [173.38.203.54]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 598221292F1; Wed, 27 Feb 2019 13:31:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3439; q=dns/txt; s=iport; t=1551303101; x=1552512701; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=o+xSOYkAqWtjRAWVubIeqjgVmQQ+PpPCcnrBnFbs0Bw=; b=cEMrWDOiYGssvIpDuZT891EEerxKeGPxAUILa01c9V2a13OZxWtdBAvF IBKbvDtbD//3SnMuy+ylqYO5YUtJWUCLcwXC2C/I/VqJYfy8Mj6/+ipc3 dOhPjG3G9GdWf5hniPzGX1ORsjOvd6mi/YkwNm+qK4JyvxcKpMJg5kqy1 c=; X-IronPort-AV: E=Sophos;i="5.58,420,1544486400"; d="scan'208";a="10387344" Received: from aer-iport-nat.cisco.com (HELO aer-core-2.cisco.com) ([173.38.203.22]) by aer-iport-4.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 Feb 2019 21:31:39 +0000 Received: from asm-linux.cisco.com (ams-asmirnov-nitro6.cisco.com [10.55.206.135]) (authenticated bits=0) by aer-core-2.cisco.com (8.15.2/8.15.2) with ESMTPSA id x1RLVcQN023821 (version=TLSv1.2 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 27 Feb 2019 21:31:39 GMT To: Alexander Okonnikov , "Acee Lindem (acee)" Cc: "lsr@ietf.org" , "draft-ietf-ospf-xaf-te@ietf.org" , Gunter Van de Velde , "Ketan Talaulikar (ketant)" References: <3FD1122C-C906-4ACA-A01C-3265F6F83D02@cisco.com> From: Anton Smirnov Organization: Cisco Systems Message-ID: <41405c6f-5e38-5831-3907-8840c6a003bf@cisco.com> Date: Wed, 27 Feb 2019 22:31:38 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Authenticated-User: asmirnov X-Outbound-SMTP-Client: 10.55.206.135, ams-asmirnov-nitro6.cisco.com X-Outbound-Node: aer-core-2.cisco.com Archived-At: Subject: Re: [Lsr] "OSPF Routing with Cross-Address Family Traffic Engineering Tunnels" - draft-ietf-ospf-xaf-te-05 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Feb 2019 21:31:44 -0000 Hi Alexander, see some answers inline. --- Anton On 02/08/19 11:25, Alexander Okonnikov wrote: > Hi Acee, > > For me current version doesn't change the solution. My comments are follow: > > 1.  Introduction > > "TE Extensions to OSPFv2 [RFC3630] and OSPFv3 [RFC5329] have been > described to support intra-area TE in IPv4 and IPv6 networks, > respectively.  In both cases, the TE database provides a tight coupling > between the routed protocol and advertised TE signaling information.  In > other words, any use of the TE link state database is limited to IPv4 > for OSPFv2 [RFC2328] and IPv6 for OSPFv3 [RFC5340]." > > What is meant for "routed protocol"? Is it passenger protocol of RSVP-TE > LSPs, protocol used as a transport for RSVP signaling, protocol for > which OSPFv2/OSPFv3 calculate routes? "Routed protocol" here refers to "protocol for which OSPFv2/OSPFv3 calculate routes". Words "routed protocol" signify protocol that is subject of somebody's action, so this wording should exclude options like "protocol used as a transport for RSVP signaling" (here protocol is object, not subject). > What does mean "TEDB is limited > to IPv4/IPv6"? Is it limited to choose IPv4/IPv6 as a transport for > RSVP-TE LSP signaling? Among other things selection of [RFC3630] versus [RFC5329] defines if IPv4 or IPv6 will be used as a transport for RSVP-TE LSP signaling. But not limited to only this, all other IPv4 vs IPv6 selections become predefined. As it is written in the draft, currently there exists "a tight coupling between the routed protocol and advertised TE signaling information". > > "For example, an LSP created based on MPLS TE information propagated by > an OSPFv2 instance can be used to transport both IPv4 and IPv6 traffic, > as opposed to using both OSPFv2 and OSPFv3 to provision a separate LSP > for each address family." > > An LSP created based on TEDB from OSPFv2 can be used to transport IPv4 > and IPv6 without extensions, proposed in the draft. We are not obligated > to signal RSVP-TE LSPs from OSPFv2 TEDB for IPv4 traffic and other > RSVP-TE LSPs from OSPFv3 TEDB for IPv6 traffic. RSVP-TE LSPs signaled > based on TEDB from either - OSPFv2 or OSPFv3 - can be used for transport > either - IPv4 or IPv6 - traffic. I.e. payload of RSVP-TE LSP and > transport protocol for its signaling are not obligated to be the same. I > guess that authors meant that an LSP, based on MPLS TE from OSPFv2, can > be used for calculation of shortcuts by OSPFv2, and not by OSPFv3. > Correct. Both the description of what protocol can go over what tunnel and interpretation of the text are correct. > 3.  Operation > > "A node that implements X-AF routing SHOULD advertise, in the > corresponding Node Local Address sub-TLV, all X-AF IPv4 and IPv6 > addresses local to the router that can be used by Constrained SPF (CSPF) > to calculate MPLS TE LSPs." > > From section 1 we assume that X-AF is used for calculation of > shortcuts. Why does the draft say here about calculation of TE LSPs by CSPF? > CSPF as part of the whole procedure computing MPLS TE path among other things is defined in terms what IP addresses it uses to define tunnel tail-end. Reference to the CSPF is made to define set of IP addresses that would be of interest to X-AF algorithm. --- Anton From nobody Thu Feb 28 03:18:45 2019 Return-Path: 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 68F63130E7E for ; Thu, 28 Feb 2019 03:18:44 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, MIME_QP_LONG_LINE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 wZHIfdHM_w3R for ; Thu, 28 Feb 2019 03:18:41 -0800 (PST) Received: from m176115.mail.qiye.163.com (m176115.mail.qiye.163.com [59.111.176.115]) by ietfa.amsl.com (Postfix) with ESMTP id E07B9128BCC for ; Thu, 28 Feb 2019 03:18:40 -0800 (PST) Received: from [240.0.0.1] (unknown [81.90.189.30]) by m176115.mail.qiye.163.com (Hmail) with ESMTPA id CEFEF662420; Thu, 28 Feb 2019 19:18:30 +0800 (CST) Content-Type: multipart/alternative; boundary=Apple-Mail-19710BB2-AED1-42EC-8524-9FC8B7F0CFF0 Mime-Version: 1.0 (1.0) From: Aijun Wang X-Mailer: iPhone Mail (16D57) In-Reply-To: <06CF729DA0D6854E8C1E5121AC3330DFADDD8036@dggemm509-mbx.china.huawei.com> Date: Thu, 28 Feb 2019 19:18:21 +0800 Cc: "lsr@ietf.org" , "acee@cisco.com" Content-Transfer-Encoding: 7bit Message-Id: <91C8D487-C0CF-4A7E-85EF-DBE7CD7FA407@tsinghua.org.cn> References: <201902271636111453989@zte.com.cn> <06CF729DA0D6854E8C1E5121AC3330DFADDD8036@dggemm509-mbx.china.huawei.com> To: peng.shaofu@zte.com.cn X-HM-Spam-Status: e1kIGBQJHllBS1VLV1koWUFKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZMjUtOj cyP0FLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6NAw6Nww4SDkMGCIrTQ03LhhR PTkKCTJVSlVKTk5KSE5JTEpDSEJPVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlDSlVCS1VKQ0JVSEtZV1kIAVlBSk9PS083Bg++ X-HM-Tid: 0a6933d3c6c19373kuwscefef662420 Archived-At: Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for PrefixOriginator" - draft-wang-lsr-ospf-prefix-originator-ext-01 X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Feb 2019 11:18:44 -0000 --Apple-Mail-19710BB2-AED1-42EC-8524-9FC8B7F0CFF0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, Shaofu: Thanks for your comments. The topology retrieval process described in this draft can work for your sce= nario because the multiple links between two nodes have different prefixes. The TE task on these links is another topic, we have some solutions consider= ations on it but not reflected in current draft. Wish the above explanation can eliminate your worrying points on this draft.= Best Regards. Aijun Wang China Telecom > =20 > From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of peng.shaofu@zte.com.c= n > Sent: Wednesday, February 27, 2019 4:36 PM > To: acee@cisco.com > Cc: lsr@ietf.org > Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Pre= fixOriginator" - draft-wang-lsr-ospf-prefix-originator-ext-01 > =20 > Support, as this draft provide useful originial source router-id of prefix= , as the same as RFC7794. >=20 > For topology deducing, it seems too hard to work according to current desc= ription in the document. For example, It is hard to represent mulptile links= between two nodes if we only know two node-id information but lack of inter= face IP address or interface-id that is link attribute not be included in pr= efix flooding, thus there is no way to consider which link could be containe= d in which TE path, also, so many TE parameters of link need to be supplied f= or the deducing topology, TE metric, bandwidth, etc. Maybe there already hav= e a complete solution but just not describe detailedly in document.=20 >=20 > =20 >=20 > Thanks >=20 > Deccan(Shaofu peng) >=20 > =20 >=20 > =20 >=20 > =20 >=20 > =E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6 > =E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9AAceeLindem(acee) > =E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9Alsr@ietf.org ; > =E6=97=A5 =E6=9C=9F =EF=BC=9A2019=E5=B9=B402=E6=9C=8813=E6=97=A5 21:26 > =E4=B8=BB =E9=A2=98 =EF=BC=9A[Lsr] Working Group Adoption Poll for "OSPF E= xtension for PrefixOriginator" - draft-wang-lsr-ospf-prefix-originator-ext-0= 1 > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr >=20 > =20 > This begins a two week adoption poll for the subject draft. Please send yo= ur comments to this list before 12:00 AM UTC on Thursday, February 28th, 201= 9. > =20 > All authors have responded to the IPR poll and there is one https://datat= racker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-wang-lsr-ospf-prefix-o= riginator-ext > It is listed multiple times but references the same CN201810650141. > =20 > Thanks, > Acee > =20 > =20 >=20 > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr --Apple-Mail-19710BB2-AED1-42EC-8524-9FC8B7F0CFF0 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, Shaofu:

Thanks for y= our comments.
The topology retrieval process described in this dra= ft can work for your scenario because the multiple links between two nodes h= ave different prefixes.
The TE task on these links is another topi= c, we have some solutions considerations on it but not reflected in current d= raft.
Wish the above explanation can eliminate your worrying point= s on this draft.

Best Regards.

Aijun Wang
China Telecom

 =

From: Lsr= [mailto:lsr-bounces@ietf.org] On Behalf Of peng.shaofu@zt= e.com.cn
Sent: Wednesday, February 27, 2019 4:36 PM
To: acee@cisco.com
Cc: lsr@ietf.org
Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension fo= r PrefixOriginator" - draft-wang-lsr-ospf-prefix-originator-ext-01

 

Support, as this draft provide useful originial source route= r-id of prefix, as the same as RFC7794.

For topology deducing, it seems too hard to work according t= o current description in the document. For example, It is hard to represent m= ulptile links between two nodes if we only know two node-id information but lack of interface IP address or interface-= id that is link attribute not be included in prefix flooding, thus there is n= o way to consider which link could be contained in which TE path, also, so m= any TE parameters of link need to be supplied for the deducing topology, TE metric, bandwidth, etc. Maybe t= here already have a complete solution but just not describe detailedly in do= cument. 

 

Thanks

Deccan(Shaofu peng)

 

 

 

=E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6

=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9AAceeLindem(acee) &= lt;acee@cisco.com>

=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9Alsr@ietf.org <lsr@ietf.= org>;

=E6=97=A5 =E6=9C=9F =EF=BC=9A= 2019=E5=B9=B402=E6=9C= =8813=E6=97=A5 21:26

=E4=B8=BB =E9=A2=98 =EF=BC=9A[Lsr] Working Group Adoption Poll for "OSPF Extension for PrefixOrigina= tor" - draft-wang-lsr-ospf-prefix-originator-ext-01

________________________________= _______________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org/m= ailman/listinfo/lsr

 

This begins a two we= ek adoption poll for the subject draft. Please send your comments to this li= st before 12:00 AM UTC on Thursday, February 28th, 2019.

 

All authors have res= ponded to the IPR poll and there is one  https://datatracker.ietf.org/ipr/search/?subm= it=3Ddraft&id=3Ddraft-wang-lsr-ospf-prefix-originator-ext

It is listed multipl= e times but references the same CN201810650141.<= /o:p>

 

Thanks,

Acee

 

 

________= _______________________________________
Lsr mailing list
Lsr@ietf.org
https://www.ietf.org= /mailman/listinfo/lsr
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Thu, 28 Feb 2019 18:19:23 +0000 From: Alexander Vainshtein To: "draft-ietf-isis-segment-routing-extensions@ietf.org" CC: "lsr@ietf.org" , "spring@ietf.org" Thread-Topic: FlexAlgo and Global Adj-SIDs Thread-Index: AdTPjdP9QRfJ5GzARfmqN1/BpEhW0g== Date: Thu, 28 Feb 2019 18:19:23 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.234.241.1] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: e411cffd-ac30-4046-d035-08d69da94424 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020); SRVR:AM6PR03MB4344; x-ms-traffictypediagnostic: AM6PR03MB4344: x-ms-exchange-purlcount: 2 x-microsoft-exchange-diagnostics: =?us-ascii?Q?1; AM6PR03MB4344; 23:qKBfrILj/nYG4kw8+cUXOSVsH22ayI+l2MY5WRjTd?= =?us-ascii?Q?KO7RcMtSJhjTB35stnHycRa4GKBSQNtjAyhzZQEnUZW6q+UdZzNKUlznJDBy?= =?us-ascii?Q?urG4OuIt3PDGwb10BCiRw2w6MCZ3wXRRcKs+ELbigdx8GK9sr5bJp+hKoXrg?= =?us-ascii?Q?ORRiw6aejd8bfNPghp1JS0QPS3TNnGf/seRgIGLfT/NIzR6J6iSc9T/IuoCp?= =?us-ascii?Q?kpNfjjCR00JObNmNtXhvPkUkB0n/YMI0DY6jv2Rp8ZxhRBiSqULq1RuyB7/5?= =?us-ascii?Q?Rz4zE86VwJHHx7R7yDCHeJFZOxNMaScRIEU9JsLbGKiH7wbwpn2CrxiwxbuK?= =?us-ascii?Q?171yzl04fCW+jJgqEUKQ3Hrqef1j5HbUHihVQwCwiMIBoz0sskLsLjXy3Kia?= =?us-ascii?Q?LVka3g8tNGQqFwMwg5wLe3nJto9S3wu6AioTdYR4C7OB09o4OGpi9aEbQprA?= =?us-ascii?Q?kt2cOds8BnCi70AWPtoAz9KSEMi9dtkGU4z9VNZifqYiDBZMvTFGNQPhJ9SP?= =?us-ascii?Q?EIROkYfI2u2ocBH1X1RzbqkssSy8yYVRw1htEjm2xTy2mi+/N4gEYsDx6fjG?= =?us-ascii?Q?lndfrdjmSR6AlEQwc8l+fBKv/LPslxvX2ciWlC9tvd68aeHhM/1D/3z3by5P?= =?us-ascii?Q?erwFntJkx5jZNpv03y01ZLWnfjKbJMAdU3yo/AhCvMyKQFAOpY/yn7pGR0AH?= =?us-ascii?Q?KNKdm3ycY5JV8id2VUq60WLKCTU1exvJYQJVBRUOavNjbRhSDhfqJ4j1AbkC?= =?us-ascii?Q?M65K/5OUymZvbo9eQD70OQBj4nTuvtwvpzyhgSBppZke6bE1do7YsINL9AE0?= =?us-ascii?Q?mdJQohHYrJ8qJf1Yc8mr23PShAUNxsl05snqRNouo7Wvw5DArM5kn4iOg+dp?= =?us-ascii?Q?EQGBkXHwP95B3n5Ege46fKIyiGQusVnzIap+PI0e4d35H8qDm5yAV6zVZkaA?= =?us-ascii?Q?zIM3Por4WK6ZA5CgVOK6QbT/XmpLe03xfuE0s13IiE2ur4SLhEzwBp0N4Zyx?= =?us-ascii?Q?mBhurqffUIzODLkqTB35+ps5ad+OYs+6BO8Rtt9gU4q8h69M6+fqWH4BCIdK?= =?us-ascii?Q?SajE6JQvdVRTpJK0J9D6RPvDGg/WW60voM8EYyLGU5ZuNY/cugby9GtYwBMI?= =?us-ascii?Q?rOAiOKcrGpSYa+CCo3Y1vT0P1dSr1ZHr+rEZBy29Tbjre5zk9i8lKVUxAYQm?= =?us-ascii?Q?kjtPOkBw//BqB/eWSaWgURO5SmI/QnG4fzT35S5TQfdd8DLOs97valmRJhYi?= =?us-ascii?Q?HCmvTyqDKTfos8ECSurYF26UUkI23c0Gvu5+LmiE6BEChoT36BZ2T6TKbh8G?= =?us-ascii?Q?zHDieD7uofjWu460C8FeUxWDgaMdxmPe7poPlfoqGYMIz/L7cimGOUCpiaqi?= =?us-ascii?Q?abu9n29EnqJDjt2ZeN/U1lYX/o=3D?= x-microsoft-antispam-prvs: x-forefront-prvs: 0962D394D2 x-forefront-antispam-report: SFV:NSPM; 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boundary="_000_AM6PR03MB38302990EFFB7482B5C7F55F9D750AM6PR03MB3830eurp_" MIME-Version: 1.0 X-OriginatorOrg: ecitele.com X-MS-Exchange-CrossTenant-Network-Message-Id: e411cffd-ac30-4046-d035-08d69da94424 X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Feb 2019 18:19:23.6119 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 2c514a61-08de-4519-b4c0-921fef62c42a X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR03MB4344 X-CFilter-Loop: Reflected Archived-At: Subject: [Lsr] FlexAlgo and Global Adj-SIDs X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Feb 2019 18:19:38 -0000 --_000_AM6PR03MB38302990EFFB7482B5C7F55F9D750AM6PR03MB3830eurp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear colleagues, I have a question regarding global Adj-SIDs in draft-ietf-isis-segment-rou= ting-extensions. Section 3.4 of RFC 8402 defines defi= nition and handling of global Adj-SIDs. The relevant text is given below: Similarly, when using a global Adj-SID, a packet injected anywhere within the SR domain with a segment list {SNL}, where SNL is a global Adj-SID attached by node N to its adjacency over link L, will be forwarded along the shortest path to N and then be switched by N, without any IP shortest-path consideration, towards link L. ... The use of global Adj-SID allows to reduce the size of the segment list= When expressing a path at the cost of additional state (i.e., the globa= l Adj-SID will be inserted by all routers within the area in their forwarding table). The definition of the Adjacency Segment Identifier Sub-TLV in Section 2.2.= 1 of the draft matches the behavior defined in RFC 8402, i.e., it allows a= dvertisement of global Adj-SIDs. These advertisements can be associated with a specific IGP adjacency and, = in multi-topology scenarios, a specific topology. But it is not associated= with any specific algorithm since the default algorithm for reaching the = advertising node is implicitly assumed in full alignment with RFC 8402. My question is about the situation in which multiple algorithms are suppor= ted by the routers in the SR domain, so that each node advertises a dedica= ted Node SID for each of these algorithm. In this scenario, the operator can set up a SR-TE LSP that meets specific = constraints (incorporated in one of these algorithms, see IGP Flexible Alg= orithm draft) by = using Node SIDs that have been advertised with the corresponding algorithm= and local Adj-SIDs. However, global Adj-SIDs cannot be used (e.g., for re= ducing the label stack depth) in this situation. I wonder if the possibility to advertise global Adj-SID (that can be consi= dered as replacing a combination of the Node SID of the advertising node a= nd one of its local Adj-SIDs) as associated with a specific algorithm has = ever been considered? Regards, and lots of thanks in advance, Sasha Office: +972-39266302 Cell: +972-549266302 Email: Alexander.Vainshtein@ecitele.com __________________________________________________________________________= _ This e-mail message is intended for the recipient only and contains inform= ation which is=20 CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have rece= ived this=20 transmission in error, please inform us by e-mail, phone or fax, and then = delete the original=20 and all copies thereof. __________________________________________________________________________= _ --_000_AM6PR03MB38302990EFFB7482B5C7F55F9D750AM6PR03MB3830eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Dear colleagues,

I have a question regarding global Adj-SIDs in draf= t-ietf-isis-segment-routing-extensions.

 

Section 3.4 of RFC 8402  defines definition and handling of global Adj-SIDs.

The relevant text is given below:

 

<quote>

   Similarly, when using a global = Adj-SID, a packet injected anywhere

   within the SR domain with a seg= ment list {SNL}, where SNL is a global

   Adj-SID attached by node N to i= ts adjacency over link L, will be<= /span>

 = ;  forwarded along the shortest path to N and then be switched by N,

   without any IP shortest-path co= nsideration, towards link L.

...

   The use of global Adj-SID al=
lows to reduce the size of the segment list 
   When expressing a path =
at the cost of additional state (i.e., the global
   Adj-SID will be inserted by =
all routers within the area in their
   forwarding table).

<end quote>

 

The definition of the Adjacency Segment Identifier = Sub-TLV in Section 2.2.1 of the draft matches the behavior defined in RFC = 8402, i.e., it allows advertisement of global Adj-SIDs.

These advertisements can be associated with a speci= fic IGP adjacency and, in multi-topology scenarios, a specific topology. B= ut it is not associated with any specific algorithm since the default algo= rithm for reaching the advertising node is implicitly assumed in full alignment with RFC 8402.

 

My question is about the situation in which multipl= e algorithms are supported by the routers in the SR domain, so that each n= ode advertises a dedicated Node SID for=20each of these algorithm.

In this scenario, the operator can set up a SR-TE L= SP that meets specific constraints (incorporated in one of these algorithm= s, see IGP Fl= exible Algorithm draft) by using Node SIDs that have been advertised w= ith the corresponding algorithm and local Adj-SIDs. However, global Adj-SI= Ds cannot be used (e.g., for reducing the label stack depth) in this situation.

I wonder if the possibility to advertise global Adj= -SID (that can be considered as replacing a combination of the Node SID of= the advertising node and one of its local Adj-SIDs) as associated with a = specific algorithm has ever been considered?

 

Regards, and lots of thanks in advance,<= /p>

Sasha

 

Office: +972-39266302

Cell:      +972-549266= 302

Email:   Alexander.Vainshtein@ecitele.com=

 


__________________________________________________________________________= _

This e-mail message is intended for the recipient only and contains inform= ation which is
CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have rece= ived this
transmission in error, please inform us by e-mail, phone or fax, and then = delete the original
and all copies thereof.
__________________________________________________________________________= _
--_000_AM6PR03MB38302990EFFB7482B5C7F55F9D750AM6PR03MB3830eurp_-- From nobody Thu Feb 28 11:11:51 2019 Return-Path: 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 C697012D4F2; Thu, 28 Feb 2019 11:11:49 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 bnS3BRrf2RHb; Thu, 28 Feb 2019 11:11:48 -0800 (PST) Received: from rfc-editor.org (rfc-editor.org [4.31.198.49]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E95261289FA; Thu, 28 Feb 2019 11:11:47 -0800 (PST) Received: by rfc-editor.org (Postfix, from userid 30) id 2A82FB81D39; Thu, 28 Feb 2019 11:11:27 -0800 (PST) To: ietf-announce@ietf.org, rfc-dist@rfc-editor.org X-PHP-Originating-Script: 1005:ams_util_lib.php From: rfc-editor@rfc-editor.org Cc: rfc-editor@rfc-editor.org, drafts-update-ref@iana.org, lsr@ietf.org Content-type: text/plain; charset=UTF-8 Message-Id: <20190228191127.2A82FB81D39@rfc-editor.org> Date: Thu, 28 Feb 2019 11:11:27 -0800 (PST) Archived-At: Subject: [Lsr] =?utf-8?q?RFC_8500_on_IS-IS_Routing_with_Reverse_Metric?= X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Feb 2019 19:11:50 -0000 A new Request for Comments is now available in online RFC libraries. RFC 8500 Title: IS-IS Routing with Reverse Metric Author: N. Shen, S. Amante, M. Abrahamsson Status: Standards Track Stream: IETF Date: February 2019 Mailbox: naiming@cisco.com, amante@apple.com, mikael.abrahamsson@t-systems.se Pages: 15 Characters: 34933 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-isis-reverse-metric-17.txt URL: https://www.rfc-editor.org/info/rfc8500 DOI: 10.17487/RFC8500 This document describes a mechanism to allow IS-IS routing to quickly and accurately shift traffic away from either a point-to-point or multi-access LAN interface during network maintenance or other operational events. This is accomplished by signaling adjacent IS-IS neighbors with a higher reverse metric, i.e., the metric towards the signaling IS-IS router. This document is a product of the Link State Routing Working Group of the IETF. This is now a Proposed Standard. STANDARDS TRACK: This document specifies an Internet Standards Track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the Official Internet Protocol Standards (https://www.rfc-editor.org/standards) for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC From nobody Thu Feb 28 11:56:58 2019 Return-Path: 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 B01F2130EFE; Thu, 28 Feb 2019 11:56:55 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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 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 vvbvy-63nytI; Thu, 28 Feb 2019 11:56:53 -0800 (PST) Received: from aer-iport-4.cisco.com (aer-iport-4.cisco.com [173.38.203.54]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8D5A5124BF6; Thu, 28 Feb 2019 11:56:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3659; q=dns/txt; s=iport; t=1551383813; x=1552593413; h=subject:to:references:cc:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=yZ/K0FjA5udzeW66QCHrTO84vuyPO8bVnEhlCf60yn8=; b=hSPqw1rBF38Tpufl9vazGgHADhv1X56CoVucn6uMOevai3sGGtWWHJc7 peu0BHqpK+M60YSmS2sqWbqxWuPMh9rtkOOT+/2+WtcQF1eKD4sPO7vCz 5HRtPGAOntYh2oIgZ+y/Puxb9Opox+Ir9pP7ASonA982yQTYTM/cKxWdk g=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AHAADwO3hc/xbLJq1lGQEBAQEBAQE?= =?us-ascii?q?BAQEBAQcBAQEBAQGBUwIBAQEBAQsBgmxxEieNAYx8mCAUgWcNGAuEA0YChDY?= =?us-ascii?q?2Bw0BAwEBAwEDAm0cDIVLAQEEAQE2NgsOAgsYLhYRMAYBDAYCAQGDHAGBcg+?= =?us-ascii?q?tXIQzAoEPhGcFBYxagUA/gRAogmuDHgEBA4EmBQESAUuFNQKJcYcykkcJh0K?= =?us-ascii?q?BGooIBhmBc4VfgyCIKopdhVaMaIFOATBlcTMaCBsVO4JsgigXiF+FQD4DMI1?= =?us-ascii?q?/gj4BAQ?= X-IronPort-AV: E=Sophos;i="5.58,424,1544486400"; d="scan'208";a="10409662" Received: from aer-iport-nat.cisco.com (HELO aer-core-3.cisco.com) ([173.38.203.22]) by aer-iport-4.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Feb 2019 19:56:50 +0000 Received: from [10.60.140.54] (ams-ppsenak-nitro5.cisco.com [10.60.140.54]) by aer-core-3.cisco.com (8.15.2/8.15.2) with ESMTP id x1SJunFu003598; Thu, 28 Feb 2019 19:56:49 GMT To: Alexander Vainshtein , "draft-ietf-isis-segment-routing-extensions@ietf.org" References: Cc: "lsr@ietf.org" , "spring@ietf.org" From: Peter Psenak Message-ID: <20493a62-cf70-a182-900d-e55dd68f5149@cisco.com> Date: Thu, 28 Feb 2019 20:56:49 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Outbound-SMTP-Client: 10.60.140.54, ams-ppsenak-nitro5.cisco.com X-Outbound-Node: aer-core-3.cisco.com Archived-At: Subject: Re: [Lsr] [spring] FlexAlgo and Global Adj-SIDs X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Feb 2019 19:56:56 -0000 Hi Alexander, On 28/02/2019 19:19 , Alexander Vainshtein wrote: > Dear colleagues, > > I have a question regarding global Adj-SIDs in > draft-ietf-isis-segment-routing-extensions. > > > > Section 3.4 of RFC 8402 defines > definition and handling of global Adj-SIDs. > > The relevant text is given below: > > > > > > Similarly, when using a global Adj-SID, a packet injected anywhere > > within the SR domain with a segment list {SNL}, where SNL is a global > > Adj-SID attached by node N to its adjacency over link L, will be > > forwarded along the shortest path to Nand then be switched by N, > > without any IP shortest-path consideration, towards link L. > > ... > > The use of global Adj-SID allows to reduce the size of the segment list > > When expressing a path at the cost of additional state (i.e., the global > > Adj-SID will be inserted by all routers within the area in their > > forwarding table). > > > > > > The definition of the Adjacency Segment Identifier Sub-TLV in Section > 2.2.1 of the draft matches the behavior defined in RFC 8402, i.e., it > allows advertisement of global Adj-SIDs. > > These advertisements can be associated with a specific IGP adjacency > and, in multi-topology scenarios, a specific topology. But it is not > associated with any specific algorithm since the default algorithm for > reaching the advertising node is implicitly assumed in full alignment > with RFC 8402. > > > > My question is about the situation in which multiple algorithms are > supported by the routers in the SR domain, so that each node advertises > a dedicated Node SID for each of these algorithm. > > In this scenario, the operator can set up a SR-TE LSP that meets > specific constraints (incorporated in one of these algorithms, see IGP > Flexible Algorithm > draft) by > using Node SIDs that have been advertised with the corresponding > algorithm and local Adj-SIDs. However, global Adj-SIDs cannot be used > (e.g., for reducing the label stack depth) in this situation. > > I wonder if the possibility to advertise global Adj-SID (that can be > considered as replacing a combination of the Node SID of the advertising > node and one of its local Adj-SIDs) as associated with a specific > algorithm has ever been considered? to be honest, it has been not. The usage of the global Adj-SID has not been widely considered due to the additional forwarding entries it requires on rest of the routers in the area. Not sure if there are implementations of the global ADj-SID out there. If you believe this is important, we can certainly addressed that in a small draft. thanks, Peter > > > > Regards, and lots of thanks in advance, > > Sasha > > > > Office: +972-39266302 > > Cell: +972-549266302 > > Email: Alexander.Vainshtein@ecitele.com > > > > > ___________________________________________________________________________ > > This e-mail message is intended for the recipient only and contains > information which is > CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have > received this > transmission in error, please inform us by e-mail, phone or fax, and > then delete the original > and all copies thereof. > ___________________________________________________________________________ > > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > From nobody Thu Feb 28 12:25:41 2019 Return-Path: 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 CD6D2130F39 for ; Thu, 28 Feb 2019 12:25:38 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.501 X-Spam-Level: X-Spam-Status: No, score=-14.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, 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ietfa.amsl.com (Postfix) with ESMTP id 35543131100; Thu, 28 Feb 2019 17:36:30 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: lsr@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.92.1 Auto-Submitted: auto-generated Precedence: bulk Reply-To: lsr@ietf.org Message-ID: <155140419012.28718.3491410074095434078@ietfa.amsl.com> Date: Thu, 28 Feb 2019 17:36:30 -0800 Archived-At: Subject: [Lsr] I-D Action: draft-ietf-lsr-ospf-prefix-originator-00.txt X-BeenThere: lsr@ietf.org X-Mailman-Version: 2.1.29 List-Id: Link State Routing Working Group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Mar 2019 01:36:30 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Link State Routing WG of the IETF. Title : OSPF Extension for Prefix Originator Authors : Aijun Wang Acee Lindem Jie Dong Ketan Talaulikar Peter Psenak Filename : draft-ietf-lsr-ospf-prefix-originator-00.txt Pages : 9 Date : 2019-02-28 Abstract: This document describes OSPFv2 and OSPFv3 encodings to advertise the router-id of the originator of inter-area prefixes for OSPFv2 and OSPFv3 LSAs, which are needed in several use cases in several multi- area OSPF use cases. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-lsr-ospf-prefix-originator/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-lsr-ospf-prefix-originator-00 https://datatracker.ietf.org/doc/html/draft-ietf-lsr-ospf-prefix-originator-00 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/