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Nov 2019 15:06:55 +0000 From: "Les Ginsberg (ginsberg)" To: Qin Wu , "lsr@ietf.org" Thread-Topic: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-03.txt Thread-Index: AdWQfQ+o+TD/ntWwTniZBA6qXO6xKAASNP4A Date: Fri, 1 Nov 2019 15:06:55 +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=ginsberg@cisco.com; x-originating-ip: [2001:420:c0c8:1006::d7] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 92a2f745-8f7f-4f1a-6266-08d75edd2295 x-ms-traffictypediagnostic: MWHPR11MB1902: x-ms-exchange-purlcount: 5 x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; x-forefront-prvs: 020877E0CB x-forefront-antispam-report: SFV:NSPM; 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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 cPMUu65wUmDS; Sat, 2 Nov 2019 19:03:09 -0700 (PDT) Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) (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 14AE4120013; Sat, 2 Nov 2019 19:03:08 -0700 (PDT) Received: from kduck.mit.edu ([24.16.140.251]) (authenticated bits=56) (User authenticated as kaduk@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id xA3232vF024435 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 2 Nov 2019 22:03:05 -0400 Date: Sat, 2 Nov 2019 19:03:02 -0700 From: Benjamin Kaduk To: Padma Pillay-Esnault Cc: Kyle Rose , lsr@ietf.org, tsv-art@ietf.org, draft-ietf-ospf-ospfv2-hbit.all@ietf.org, last-call@ietf.org Message-ID: <20191103020302.GZ55993@kduck.mit.edu> References: <157255845092.30400.10881471178799546764@ietfa.amsl.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Archived-At: Subject: Re: [Lsr] [Last-Call] Tsvart last call review of draft-ietf-ospf-ospfv2-hbit-10 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 Nov 2019 02:03:11 -0000 Hi Padma, On Thu, Oct 31, 2019 at 03:50:45PM -0700, Padma Pillay-Esnault wrote: > Hi Kyle > > Thank you for your review > > Please see below PPE > > On Thu, Oct 31, 2019 at 2:47 PM Kyle Rose via Datatracker > wrote: > > * I'm curious what happens if a router sets the H-bit when it is on the only > > feasible transit path. > > > > PPE - The router with the H-bit set will not be "on the only feasible > transit path" to other destinations. The H-bit functionality will exclude > the host router from the path calculation in the SPF. I think you are talking about normal operation ("will not be on the only feasible transit path") and Kyle is asking about misconfiguration or similar edge cases. Having only read this email thread and not the document itself, I assume that traffic will fail to flow if such a misconfiguration occurred, but it would be good to confirm/refute that. Thanks, Ben From nobody Sun Nov 3 11:28:36 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 B1FFF120086; Sun, 3 Nov 2019 11:28:26 -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_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=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 NBYoZC2JIUWq; Sun, 3 Nov 2019 11:28:24 -0800 (PST) Received: from mail-vs1-xe29.google.com (mail-vs1-xe29.google.com [IPv6:2607:f8b0:4864:20::e29]) (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 03D24120052; Sun, 3 Nov 2019 11:28:24 -0800 (PST) Received: by mail-vs1-xe29.google.com with SMTP id v10so9655976vsc.7; Sun, 03 Nov 2019 11:28:23 -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=/WqS/9/5kL8xkE7k5Du2+OG4I7qlnI4vnmN9AVK6qCU=; b=IlARF3cjjXBSvqkQpKdugKY+zrp/eiS4nj4sqYUv8Q7WJR+xSBARbz0s1/rJRlshgE m9Uz1uRWjdVEfh0tdtgRkw423s6eFuYAJlk40/4XYtEQxfBcul8P+PuqYzRPoa4EM1bE lMOvutYbU/O7kNx4fGH9Oq4scHEx9BjQUEwPoV9hP3X5u/Ie5z7jxB3na5JfU6f384vS +nta8v1h4SLTOm7Nf/MMmj/R1jAolOYKvkbmKy1Eed9wdaGUueEAQtIae9zjXLFarwN4 Xrp2i+dc2WrwdH+tFxF2hRDgckmcozetfEO3khgcj36J9YQ4lYGxVz4BCSgl0wnZVn1l uDbA== 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=/WqS/9/5kL8xkE7k5Du2+OG4I7qlnI4vnmN9AVK6qCU=; b=NJP7Kwgs4NBtVfDRHcLt+b6HRDgmyjdf+l4JQnfWYcqtVgdIjMMkuzF01RHcalsCng IgkkntUzEOyxhTGur4sK5SZXEnVJ7MWdYzjCKweyntqNFqiizznYwLy3cSFWpsU0NV6I ZIzPZqLnZGB7Wmf9A0e2Wh3IVw2VCyuL7sdOsj4Nug6rn3F3UD4cebajLs1qRQvlzsOs T4iEAKuWlxBIGq9mNPew24PjNcG3qaHSSP7LA4uPmMS2hlPscmgmsr4erb1DU/Q2RVQX RwmUI8UHqjDen4o+Qd3tI0O+JPqiiafgBH94l6HoyQc9UMiNknU947hMLLlVjAmA7tqG hYMQ== X-Gm-Message-State: APjAAAW8xnre9pBQKF7PEoZR9VyY1G2NLEH3UhSI+UG4ocRNSog2AfYc dj1dh1wT4u6ecFF14zZD+ucP0bU1kwheTW8BpPA= X-Google-Smtp-Source: APXvYqz0KaOeyoWLgmhDe7iGl2/n55FL7mZhqZzjuSxsRozaaxHc8xGz4d/9QTXbABL2C2KhmQrfQfhkkaVY5vSOb6Y= X-Received: by 2002:a67:b917:: with SMTP id q23mr3379716vsn.205.1572809302926; Sun, 03 Nov 2019 11:28:22 -0800 (PST) MIME-Version: 1.0 References: <157255845092.30400.10881471178799546764@ietfa.amsl.com> <20191103020302.GZ55993@kduck.mit.edu> In-Reply-To: <20191103020302.GZ55993@kduck.mit.edu> From: Padma Pillay-Esnault Date: Sun, 3 Nov 2019 11:28:11 -0800 Message-ID: To: Benjamin Kaduk Cc: Kyle Rose , lsr@ietf.org, tsv-art@ietf.org, draft-ietf-ospf-ospfv2-hbit.all@ietf.org, last-call@ietf.org Content-Type: multipart/alternative; boundary="000000000000cce8dd059676338c" Archived-At: Subject: Re: [Lsr] [Last-Call] Tsvart last call review of draft-ietf-ospf-ospfv2-hbit-10 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 Nov 2019 19:28:27 -0000 --000000000000cce8dd059676338c Content-Type: text/plain; charset="UTF-8" Hi Ben On Sat, Nov 2, 2019 at 7:03 PM Benjamin Kaduk wrote: > Hi Padma, > > On Thu, Oct 31, 2019 at 03:50:45PM -0700, Padma Pillay-Esnault wrote: > > Hi Kyle > > > > Thank you for your review > > > > Please see below PPE > > > > On Thu, Oct 31, 2019 at 2:47 PM Kyle Rose via Datatracker < > noreply@ietf.org> > > wrote: > > > > * I'm curious what happens if a router sets the H-bit when it is on the > only > > > feasible transit path. > > > > > > > PPE - The router with the H-bit set will not be "on the only feasible > > transit path" to other destinations. The H-bit functionality will > exclude > > the host router from the path calculation in the SPF. > > I think you are talking about normal operation ("will not be on the only > feasible transit path") and Kyle is asking about misconfiguration or > similar edge cases. > Thanks for this clarification. > > Having only read this email thread and not the document itself, I assume > that traffic will fail to flow if such a misconfiguration occurred, but it > would be good to confirm/refute that. > Yes you are right ... for some cases. Assuming the router with the H-bit clear is on the only transit path. There are several cases see below. Normal case: The router has H-bit set (a) All routers in the area support the H-bit then the router is excluded in the SPF calculations and traffic will not flow. (b) At least one router in the area does not support H-bit then H-bit is not active in area. The traffic will flow as per normal OSPF operation. Misconfiguration case: The router has H-bit erroneously set (misconfig) (a) All routers in the areas support H-bit then the router is excluded in the SPF calculations and traffic will not flow. (b) At least one router in the area does not support H-bit then H-bit is not active in area. The traffic will flow as per normal OSPF operation. The Section 8 of the document has a discussion on this. Hope that this addresses your comment. Thanks Padma > > Thanks, > > Ben > --000000000000cce8dd059676338c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Ben=C2=A0

On Sat, Nov 2, 2019 at 7:0= 3 PM Benjamin Kaduk <= kaduk@mit.edu> wrote:
Hi Padma,

On Thu, Oct 31, 2019 at 03:50:45PM -0700, Padma Pillay-Esnault wrote:
> Hi Kyle
>
> Thank you for your review
>
> Please see below PPE
>
> On Thu, Oct 31, 2019 at 2:47 PM Kyle Rose via Datatracker <noreply@ietf.org>
> wrote:
>
> * I'm curious what happens if a router sets the H-bit when it is o= n the only
> > feasible transit path.
> >
>
> PPE - The router with the H-bit set will not be "on the only feas= ible
> transit path" to other destinations.=C2=A0 The H-bit functionalit= y will exclude
> the host router from the path calculation in the SPF.

I think you are talking about normal operation ("will not be on the on= ly
feasible transit path") and Kyle is asking about misconfiguration or similar edge cases.

Thanks for this cla= rification.=C2=A0

Having only read this email thread and not the document itself, I assume that traffic will fail to flow if such a misconfiguration occurred, but it<= br> would be good to confirm/refute that.
=C2=A0
Yes yo= u are right ... for some cases.

Assuming th= e router with the H-bit clear is on the only transit path. There are severa= l cases see below.

Nor= mal case:
The router has H-bit set=C2=A0
(a) All routers in the area = support the H-bit then the router is excluded in the SPF calculations and t= raffic will not flow.
(b) At least one router in the area does not suppo= rt H-bit then H-bit is not active in area.=C2=A0 The traffic will flow as p= er normal OSPF operation.

Misconfiguration case:
The router has H-bit erroneously set (mis= config)=C2=A0
(a) All routers in the areas support H-bit then the router= is excluded in the SPF calculations and traffic will not flow.=C2=A0
(b= ) At least one router in the area does not support H-bit then H-bit is not = active in area.=C2=A0 The traffic will flow as per normal OSPF operation.= =C2=A0

The Section 8 of the do= cument has a discussion on this.

<= /div>
Hope that this addresses your comment.=

Thanks
Padma

Thanks,

Ben
--000000000000cce8dd059676338c-- From nobody Sun Nov 3 17:28:38 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 0E144120880 for ; Sun, 3 Nov 2019 17:28:36 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.997 X-Spam-Level: X-Spam-Status: No, score=-1.997 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 834aerZsCedv for ; Sun, 3 Nov 2019 17:28:33 -0800 (PST) Received: from mail-il1-x134.google.com (mail-il1-x134.google.com [IPv6:2607:f8b0:4864:20::134]) (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 CB447120857 for ; Sun, 3 Nov 2019 17:28:33 -0800 (PST) Received: by mail-il1-x134.google.com with SMTP id m5so4214782ilq.0 for ; Sun, 03 Nov 2019 17:28:33 -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=RspNG45JqpnZ2QAQ2BSrI0fABwErL7DN0xJ7FBBhWNA=; b=ExA4wjme8xXD8d/MU3rGkD82k23EJsHcGtpvWrCS+wvicjM/pv9JuCdmkd6kiLu7sc 6AHCD2ItbHXAa1YjR/UHp4zuaBktQaurHe0hDzFF0rQVKjwHSaXVKLz+XaI8tIEl+2Bp uVJU9IfqM5WPD3MsSGZ0F7Cwt1tJLJ7s0YtKQxT2sdZqDqYoVn+CII5ixUZbHL7Qj6Ww O0TmEHMrrdel+jMINLdiJSkC1PLRu8Xny4zXy7rhMefgDD4+NucpEWFOoXFoYPaAknLY L6ob7nTXlQtIsfYGlWoi2uq/0jcwKwxbJhAnTtjRPjA92EJ4Cw/L3jGkdY72T2x5Is4x Js2w== 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=RspNG45JqpnZ2QAQ2BSrI0fABwErL7DN0xJ7FBBhWNA=; b=naNwlWxZselYDSOjJuK/fx42Yifj3KZKblz+a2Z6wD38OKnXmLa7mNAsCqbiJH3Zd7 +DS++qzR064qYOXGkAjX/jE4bfPtScDB+eRVZbnlaXGlGWBaylI1d330/1XUWSM/pGT1 9pZUSL2MMXrBUpKJj+RXZ9DUBAZAXRj//ueLhn2Psp/QcobVc1me6SI6GQsUAWxJIcqZ SCW9uIAkLqvv1rIEWBmD2bKghYkFTA7mN++i2TJXDDJ7Gnw4fUtVzS5D8qp0+l2U9ii4 PwQBsuMrq7Ipeihwm7yTkocIdH34m9FBrJ5OR9U+cemzCWBddbo6apTTwSt30ZKF7UYo NdgA== X-Gm-Message-State: APjAAAXfomnrxE7ff2EuIAaTUxfeHA11QbCI9crc8AYmgXYr+GKxyyP0 yEtz6D7eTv+xYjrcFWrmBFsFfgwoKDuVqcu4zNCVeU/rhvw= X-Google-Smtp-Source: APXvYqyZWDqWTnd5bLtyXrNaHRVdm0gTsqCsTwWLAOAEdhI137KCvQwuVq4+WYQKhYcIiabtDXeC0qkNZUjh34Xo0ew= X-Received: by 2002:a92:5c15:: with SMTP id q21mr26076911ilb.239.1572830913074; Sun, 03 Nov 2019 17:28:33 -0800 (PST) MIME-Version: 1.0 From: Tony Przygienda Date: Sun, 3 Nov 2019 17:27:40 -0800 Message-ID: To: lsr@ietf.org Content-Type: multipart/alternative; boundary="000000000000dd9d3005967b3b98" Archived-At: Subject: [Lsr] ISIS flood reflection draft posted ... 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 Nov 2019 01:28:36 -0000 --000000000000dd9d3005967b3b98 Content-Type: text/plain; charset="UTF-8" We posted updated https://datatracker.ietf.org/doc/draft-przygienda-lsr-flood-reflection/ replacing the previous version without -lsr- in it and will present in Singapore. thanks --- tony Abstract: This document provides specification of an optional ISIS extension that allows to create l2 flood reflector topologies utilizing all paths within L1 areas when they are used as 'transit' to guarantee L2 connectivity between L2 'islands'. Only routers participating in the flood reflection have to be upgraded and with that the feature allows to significantly increase practical size of ISIS L2 backbone without forklifting the whole domain or complex configuration requirements. --000000000000dd9d3005967b3b98 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
We posted updated https://datatracker.ietf.o= rg/doc/draft-przygienda-lsr-flood-reflection/ replacing the previous ve= rsion without -lsr- in it and will present in Singapore.
thanks

--- tony
Abstract:
=C2=A0=C2=A0 This document provides specification of an option= al ISIS extension
=C2=A0=C2=A0 that allo= ws to create l2 flood reflector topologies utilizing
=C2=A0=C2=A0 all paths within L1 areas when they are used as
=C2=A0=C2=A0 'transit' to guarant= ee L2 connectivity between L2 'islands'.=C2=A0=C2=A0Only
=C2=A0=C2=A0 routers participating in the flood re= flection have to be upgraded and
=C2=A0= =C2=A0 with that the feature allows to significantly increase practical siz= e
=C2=A0=C2=A0 of ISIS L2 backbone witho= ut forklifting the whole domain or complex
=C2=A0=C2=A0 configuration requirements.



--000000000000dd9d3005967b3b98-- From nobody Mon Nov 4 02:29:43 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 F095F12096E; Mon, 4 Nov 2019 02:29:36 -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: 6.108.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: lsr@ietf.org Message-ID: <157286337695.16617.16264104061501726293@ietfa.amsl.com> Date: Mon, 04 Nov 2019 02:29:36 -0800 Archived-At: Subject: [Lsr] I-D Action: draft-ietf-lsr-flex-algo-05.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, 04 Nov 2019 10:29:37 -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 : IGP Flexible Algorithm Authors : Peter Psenak Shraddha Hegde Clarence Filsfils Ketan Talaulikar Arkadiy Gulko Filename : draft-ietf-lsr-flex-algo-05.txt Pages : 32 Date : 2019-11-04 Abstract: IGP protocols traditionally compute best paths over the network based on the IGP metric assigned to the links. Many network deployments use RSVP-TE based or Segment Routing based Traffic Engineering to enforce traffic over a path that is computed using different metrics or constraints than the shortest IGP path. This document proposes a solution that allows IGPs themselves to compute constraint based paths over the network. This document also specifies a way of using Segment Routing (SR) Prefix-SIDs and SRv6 locators to steer packets along the constraint-based paths. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-lsr-flex-algo/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-lsr-flex-algo-05 https://datatracker.ietf.org/doc/html/draft-ietf-lsr-flex-algo-05 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-lsr-flex-algo-05 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. 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Thu, 07 Nov 2019 01:52:36 -0800 (PST) MIME-Version: 1.0 References: <8966_1571833701_5DB04765_8966_117_1_53C29892C857584299CBF5D05346208A48C61811@OPEXCAUBM43.corporate.adroot.infra.ftgroup> In-Reply-To: From: Robert Raszuk Date: Thu, 7 Nov 2019 10:52:28 +0100 Message-ID: To: Tarek Saad Cc: SPRING WG List , lsr@ietf.org Content-Type: multipart/alternative; boundary="00000000000010d8240596bea0f7" Archived-At: Subject: Re: [Lsr] [spring] IETF 106 - SPRING agenda 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 Nov 2019 09:52:42 -0000 --00000000000010d8240596bea0f7 Content-Type: text/plain; charset="UTF-8" *> Once advertised in the network using a suitable link state protocol > (such as OSPF, ISIS or BGP-LS),* Whow ... never imagined that BGP-LS would be called one day a "link state protocol" and an equal sign would be made to OSPF and ISIS. Best, Robert. PS. As to the proposal in draft itself it is clearly possible - but then troubleshooting and operating such mixed network would be a simple nightmare. On Thu, Nov 7, 2019 at 3:25 AM Tarek Saad wrote: > Hi SPRING WG and Chairs, > > > > We would like to request a presentation time slot for > > - I-D: https://tools.ietf.org/html/draft-saad-sr-fa-link-00 > > - Speaker: Tarek Saad > > - Desired time: 10 minutes > > > > Regards, > > Tarek > --00000000000010d8240596bea0f7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 

>   Once advertised in the network using a suitable link state protocol
>   (such as OSPF, ISIS or BGP-LS),

Whow ... never imagined that BGP-LS would be calle=
d one day a "link state protocol" and an equal sign would be made=
 to OSPF and ISIS.
= 

Best,
Robert.

PS. As to the proposal in draft itself it is clearl=
y possible - but then troubleshooting and operating such mixed network woul=
d be a simple nightmare.


On Thu, Nov 7, 2019 at 3:25 AM Tarek Saad <tsaad.net@gmail.com> wrote:

Hi SPRING WG and Chai= rs,

=C2=A0<= /span>

We would like to requ= est a presentation time slot for

- I-D:=C2=A0https://tools.ietf.org/html/draft-saad-sr-fa-link-00

- Speaker: Tarek Saad=

- Desired time: 10 mi= nutes

=C2=A0<= /span>

Regards,

Tarek

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See below... > On Sat, Nov 2, 2019 at 7:03 PM Benjamin Kaduk wrote: > > On Thu, Oct 31, 2019 at 03:50:45PM -0700, Padma Pillay-Esnault wrote: > > > On Thu, Oct 31, 2019 at 2:47 PM Kyle Rose via Datatracker > > > wrote: > > > > > > > * I'm curious what happens if a router sets the H-bit when it is on= the > > > > only feasible transit path. > > > > > > PPE - The router with the H-bit set will not be "on the only feasible > > > transit path" to other destinations. The H-bit functionality will exc= lude > > > the host router from the path calculation in the SPF. > > > > I think you are talking about normal operation ("will not be on the onl= y > > feasible transit path") and Kyle is asking about misconfiguration or > > similar edge cases. > > Thanks for this clarification. > > > > Having only read this email thread and not the document itself, I assum= e > > that traffic will fail to flow if such a misconfiguration occurred, but= it > > would be good to confirm/refute that. > > Yes you are right ... for some cases. > > Assuming the router with the H-bit clear is on the only transit path. The= re > are several cases see below. > > Normal case: > The router has H-bit set > (a) All routers in the area support the H-bit then the router is excluded= in > the SPF calculations and traffic will not flow. > (b) At least one router in the area does not support H-bit then H-bit is = not > active in area. The traffic will flow as per normal OSPF operation. > > Misconfiguration case: > The router has H-bit erroneously set (misconfig) > (a) All routers in the areas support H-bit then the router is excluded in= the > SPF calculations and traffic will not flow. > (b) At least one router in the area does not support H-bit then H-bit is = not > active in area. The traffic will flow as per normal OSPF operation. > > The Section 8 of the document has a discussion on this. Yes, there is a discussion in =C2=A78, but I think we left out the case where a rogue router, who is on the only transit path, may set the H-bit (for no good/valid reason) and effectively partition the network. =C2=A0This case is indistinguishable from the normal case where the operator (still on the only transit path) may consciously decide to set the H-bit to perform maintenance, for example. Please add a new bullet to cover this case. Thanks! Alvaro. 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<8FF8CF2F-8DF3-4E7C-AB48-DB1874962C82@cisco.com> From: Padma Pillay-Esnault Date: Thu, 7 Nov 2019 10:29:19 -0800 Message-ID: To: "Acee Lindem (acee)" Cc: Alvaro Retana , Benjamin Kaduk , Kyle Rose , "tsv-art@ietf.org" , "last-call@ietf.org" , "draft-ietf-ospf-ospfv2-hbit.all@ietf.org" , "lsr@ietf.org" , Padma Pillay-Esnault Content-Type: multipart/alternative; boundary="000000000000a8a3960596c5d83d" Archived-At: Subject: Re: [Lsr] [Last-Call] Tsvart last call review of draft-ietf-ospf-ospfv2-hbit-10 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 Nov 2019 18:29:36 -0000 --000000000000a8a3960596c5d83d Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Alvaro, Acee Ack, I will spin a new version with the review comments and will add the new bullet. Thanks everyone for your valuable feedback and comments! Padma On Thu, Nov 7, 2019 at 9:06 AM Acee Lindem (acee) wrote: > Hi Alvaro, > > =EF=BB=BFOn 11/7/19, 11:58 AM, "Alvaro Retana" w= rote: > > On November 3, 2019 at 2:28:29 PM, Padma Pillay-Esnault wrote: > > Padma: > > Hi! > > See below... > > > On Sat, Nov 2, 2019 at 7:03 PM Benjamin Kaduk wrote: > > > On Thu, Oct 31, 2019 at 03:50:45PM -0700, Padma Pillay-Esnault > wrote: > > > > On Thu, Oct 31, 2019 at 2:47 PM Kyle Rose via Datatracker > > > > wrote: > > > > > > > > > * I'm curious what happens if a router sets the H-bit when it > is on the > > > > > only feasible transit path. > > > > > > > > PPE - The router with the H-bit set will not be "on the only > feasible > > > > transit path" to other destinations. The H-bit functionality > will exclude > > > > the host router from the path calculation in the SPF. > > > > > > I think you are talking about normal operation ("will not be on > the only > > > feasible transit path") and Kyle is asking about misconfiguration > or > > > similar edge cases. > > > > Thanks for this clarification. > > > > > > Having only read this email thread and not the document itself, I > assume > > > that traffic will fail to flow if such a misconfiguration > occurred, but it > > > would be good to confirm/refute that. > > > > Yes you are right ... for some cases. > > > > Assuming the router with the H-bit clear is on the only transit > path. There > > are several cases see below. > > > > Normal case: > > The router has H-bit set > > (a) All routers in the area support the H-bit then the router is > excluded in > > the SPF calculations and traffic will not flow. > > (b) At least one router in the area does not support H-bit then > H-bit is not > > active in area. The traffic will flow as per normal OSPF operation. > > > > Misconfiguration case: > > The router has H-bit erroneously set (misconfig) > > (a) All routers in the areas support H-bit then the router is > excluded in the > > SPF calculations and traffic will not flow. > > (b) At least one router in the area does not support H-bit then > H-bit is not > > active in area. The traffic will flow as per normal OSPF operation. > > > > The Section 8 of the document has a discussion on this. > > Yes, there is a discussion in =C2=A78, but I think we left out the ca= se > where a rogue router, who is on the only transit path, may set the > H-bit (for no good/valid reason) and effectively partition the > network. This case is indistinguishable from the normal case where > the operator (still on the only transit path) may consciously decide > to set the H-bit to perform maintenance, for example. > > Please add a new bullet to cover this case. > > If an OSPFv2 router is a trusted participant in the OSPFv2 routing domain > (with or without cryptographic authentication), there are at least 3 or 4 > other ways in which it could partition the routing domain. This is just o= ne > more. However, I'm not opposed to adding the bullet as this is "what we d= o" > during the security reviews. > > Thanks, > Acee > > > Thanks! > > Alvaro. > > > --000000000000a8a3960596c5d83d Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Alvaro, Acee

Ack, I will = spin a new version with the review comments and will add the new bullet.

Thanks everyone for your valuable feedback=C2=A0and = comments!

Padma

On Thu, Nov 7, 2019 at 9:06 AM Acee= Lindem (acee) <acee@cisco.com>= wrote:
Hi Alvaro,

=EF=BB=BFOn 11/7/19, 11:58 AM, "Alvaro Retana" <aretana.ietf@gmail.com>= ; wrote:

=C2=A0 =C2=A0 On November 3, 2019 at 2:28:29 PM, Padma Pillay-Esnault wrote= :

=C2=A0 =C2=A0 Padma:

=C2=A0 =C2=A0 Hi!

=C2=A0 =C2=A0 See below...

=C2=A0 =C2=A0 > On Sat, Nov 2, 2019 at 7:03 PM Benjamin Kaduk wrote:
=C2=A0 =C2=A0 > > On Thu, Oct 31, 2019 at 03:50:45PM -0700, Padma Pil= lay-Esnault wrote:
=C2=A0 =C2=A0 > > > On Thu, Oct 31, 2019 at 2:47 PM Kyle Rose via = Datatracker
=C2=A0 =C2=A0 > > > wrote:
=C2=A0 =C2=A0 > > >
=C2=A0 =C2=A0 > > > > * I'm curious what happens if a route= r sets the H-bit when it is on the
=C2=A0 =C2=A0 > > > > only feasible transit path.
=C2=A0 =C2=A0 > > >
=C2=A0 =C2=A0 > > > PPE - The router with the H-bit set will not b= e "on the only feasible
=C2=A0 =C2=A0 > > > transit path" to other destinations. The = H-bit functionality will exclude
=C2=A0 =C2=A0 > > > the host router from the path calculation in t= he SPF.
=C2=A0 =C2=A0 > >
=C2=A0 =C2=A0 > > I think you are talking about normal operation (&qu= ot;will not be on the only
=C2=A0 =C2=A0 > > feasible transit path") and Kyle is asking abo= ut misconfiguration or
=C2=A0 =C2=A0 > > similar edge cases.
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > Thanks for this clarification.
=C2=A0 =C2=A0 > >
=C2=A0 =C2=A0 > > Having only read this email thread and not the docu= ment itself, I assume
=C2=A0 =C2=A0 > > that traffic will fail to flow if such a misconfigu= ration occurred, but it
=C2=A0 =C2=A0 > > would be good to confirm/refute that.
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > Yes you are right ... for some cases.
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > Assuming the router with the H-bit clear is on the only = transit path. There
=C2=A0 =C2=A0 > are several cases see below.
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > Normal case:
=C2=A0 =C2=A0 > The router has H-bit set
=C2=A0 =C2=A0 > (a) All routers in the area support the H-bit then the r= outer is excluded in
=C2=A0 =C2=A0 > the SPF calculations and traffic will not flow.
=C2=A0 =C2=A0 > (b) At least one router in the area does not support H-b= it then H-bit is not
=C2=A0 =C2=A0 > active in area. The traffic will flow as per normal OSPF= operation.
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > Misconfiguration case:
=C2=A0 =C2=A0 > The router has H-bit erroneously set (misconfig)
=C2=A0 =C2=A0 > (a) All routers in the areas support H-bit then the rout= er is excluded in the
=C2=A0 =C2=A0 > SPF calculations and traffic will not flow.
=C2=A0 =C2=A0 > (b) At least one router in the area does not support H-b= it then H-bit is not
=C2=A0 =C2=A0 > active in area. The traffic will flow as per normal OSPF= operation.
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > The Section 8 of the document has a discussion on this.<= br>
=C2=A0 =C2=A0 Yes, there is a discussion in =C2=A78, but I think we left ou= t the case
=C2=A0 =C2=A0 where a rogue router, who is on the only transit path, may se= t the
=C2=A0 =C2=A0 H-bit (for no good/valid reason) and effectively partition th= e
=C2=A0 =C2=A0 network.=C2=A0 This case is indistinguishable from the normal= case where
=C2=A0 =C2=A0 the operator (still on the only transit path) may consciously= decide
=C2=A0 =C2=A0 to set the H-bit to perform maintenance, for example.

=C2=A0 =C2=A0 Please add a new bullet to cover this case.

If an OSPFv2 router is a trusted participant in the OSPFv2 routing domain (= with or without cryptographic authentication), there are at least 3 or 4 ot= her ways in which it could partition the routing domain. This is just one m= ore. However, I'm not opposed to adding the bullet as this is "wha= t we do" during the security reviews.

Thanks,
Acee


=C2=A0 =C2=A0 Thanks!

=C2=A0 =C2=A0 Alvaro.


--000000000000a8a3960596c5d83d-- From nobody Thu Nov 7 11:13:09 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 F1D4E120950; Thu, 7 Nov 2019 11:13:06 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.397 X-Spam-Level: X-Spam-Status: No, score=-1.397 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, URIBL_SBL=0.5, URIBL_SBL_A=0.1] 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 ci3yXHQybXxZ; Thu, 7 Nov 2019 11:13:05 -0800 (PST) Received: from mail-yb1-xb35.google.com (mail-yb1-xb35.google.com [IPv6:2607:f8b0:4864:20::b35]) (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 8B7DB120943; Thu, 7 Nov 2019 11:13:05 -0800 (PST) Received: by mail-yb1-xb35.google.com with SMTP id i12so1392976ybg.2; Thu, 07 Nov 2019 11:13:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:thread-topic:thread-index:date:message-id :references:in-reply-to:accept-language:content-language :mime-version; bh=91Ht8A6C5ZZRhqQGLIHdgFKCpUGXjZZxRmvvwR3706k=; b=Rsknb5cQz3tTM5oNRshUjFZJbn62RHHzCMovGE8MliDkhR56PsJ3eZU/IAtq3mgD3J GiIbt/ww6f/9kvu1afloMHvkqKFTRhXFZy3A3J6NVDNAeb0Cr99HdiaUhzxavdQ5ONck SkZky/Rmsk/cdksds2jHB2QxroQBr2tfOhPaTfC2jTMzqR7ROFY+bITNekTyqT8+ksfS TBmjRcOknIfqZCfh7eu9xHEbxf3sLvy84PsBQpoK420AKSi4OTkeMKkVq0UGg4gGbNRM FYU3Tjz/o42EGpszVzA/CZ2NJSky33IE61dXUubQHDfSZeGC4Nt78QCH2SpLkbvC+9UC dB8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:thread-topic:thread-index :date:message-id:references:in-reply-to:accept-language :content-language:mime-version; bh=91Ht8A6C5ZZRhqQGLIHdgFKCpUGXjZZxRmvvwR3706k=; b=Cnt05HQDqoVhmY8WtYmZF/b0e061/U6Y5QQcpdQgXLJFWYXOtnAoTyf9YBCNuKLFvw 2XlBqCfhtJdTGoFLNqCwDFLxsvl/TQywY3rTd5AJjlb7kx3gl2qvpd3N/Xc0AhxwGc9Y gOy9XX9wtfEX1jAILE7q6dgP4NHaXxukLUtkgRSU48ZYKd4YCwiD2J/QrEk46fN2/5ek NFfetmhV2cG6VmA+ASQxX82el3c+lUXUYCViT42acAv95Q4avrMGhg6eAKzhFpNG7Oxb Q5TTb8qdVcaRNCKiWiZACQebqW6imf0pujnXjDm+KK5YCZ4cziSBgUKdT80vNgwkfZRX aS7g== X-Gm-Message-State: APjAAAXdfKHtrPc9ZegtMW5c1vPrgFt9RimIi5eud9nm28cFPXP7hYtN UpCftyBao9vJ9S2A5DBJil8= X-Google-Smtp-Source: APXvYqzIipEv6hboy/0LJKW5IaqFcIUYgK99jJ7YtJ9a5LUslQHWqDbq/ucQ/wnhWsZ7LmGS3OxdWA== X-Received: by 2002:a25:f08:: with SMTP id 8mr5003160ybp.66.1573153983987; Thu, 07 Nov 2019 11:13:03 -0800 (PST) Received: from DM6PR19MB3689.namprd19.prod.outlook.com ([2603:1036:301:21db::5]) by smtp.gmail.com with ESMTPSA id l207sm2422526ywl.20.2019.11.07.11.13.02 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 07 Nov 2019 11:13:02 -0800 (PST) From: Tarek Saad To: Robert Raszuk CC: SPRING WG List , "lsr@ietf.org" Thread-Topic: [spring] IETF 106 - SPRING agenda Thread-Index: ATE1ODFfrD4fRGkijgrbDL1LvaayojAwMjEzZ3ZEUzTEA5qndw== X-MS-Exchange-MessageSentRepresentingType: 1 Date: Thu, 7 Nov 2019 19:13:01 +0000 Message-ID: References: <8966_1571833701_5DB04765_8966_117_1_53C29892C857584299CBF5D05346208A48C61811@OPEXCAUBM43.corporate.adroot.infra.ftgroup> In-Reply-To: Accept-Language: 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_DM6PR19MB3689F8DA1025F1DEBC31AB11FC780DM6PR19MB3689namp_" MIME-Version: 1.0 Archived-At: Subject: Re: [Lsr] [spring] IETF 106 - SPRING agenda 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 Nov 2019 19:13:07 -0000 --_000_DM6PR19MB3689F8DA1025F1DEBC31AB11FC780DM6PR19MB3689namp_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Thanks Robert, Nothing new on the bgp-ls being able to carry link state ;) - rfc7752 even= states it.. =93 .. a mechanism by which link-state and TE information can be collected from networks and shared with external components using the BGP routing protocol..=94 Thanks for sharing your initial thoughts on the proposal. Regards, Tarek From: Robert Raszuk Date: Thursday, November 7, 2019 at 4:52 AM To: Tarek Saad Cc: SPRING WG List , "lsr@ietf.org" Subject: Re: [spring] IETF 106 - SPRING agenda > Once advertised in the network using a suitable link state protocol > (such as OSPF, ISIS or BGP-LS), Whow ... never imagined that BGP-LS would be called one day a "link state p= rotocol" and an equal sign would be made to OSPF and ISIS. Best, Robert. PS. As to the proposal in draft itself it is clearly possible - but then tr= oubleshooting and operating such mixed network would be a simple nightmare. On Thu, Nov 7, 2019 at 3:25 AM Tarek Saad > wrote: Hi SPRING WG and Chairs, We would like to request a presentation time slot for - I-D: https://tools.ietf.org/html/draft-saad-sr-fa-link-00 - Speaker: Tarek Saad - Desired time: 10 minutes Regards, Tarek --_000_DM6PR19MB3689F8DA1025F1DEBC31AB11FC780DM6PR19MB3689namp_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

Thanks Robert,=

 

Nothing new on the = bgp-ls being able to carry link state ;) -  rfc7752 even states it..

=93 .. a mechanism = by which link-state and TE

   inform= ation can be collected from networks and shared with external

   compon= ents using the BGP routing protocol..=94

 

Thanks for sharing = your initial thoughts on the proposal.

 

Regards,=

Tarek

From: Robert Raszuk <r= obert@raszuk.net>
Date: Thursday, November 7, 2019 at 4:52 AM
To: Tarek Saad <tsaad.net@gmail.com>
Cc: SPRING WG List <spring@ietf.org>, "lsr@ietf.org"= <lsr@ietf.org>
Subject: Re: [spring] IETF 106 - SPRING agenda

 

 
>   Once advertised in the network using a suitable link=
 state protocol
> &n=
bsp; (such as OSPF, ISIS or BGP-LS),=

 
Whow ... never imagined that BG=
P-LS would be called one day a "link state protocol" and an equal=
 sign would be made to OSPF and ISIS. 
 
Best,
Robert.
 
PS. As to the proposal in draft=
 itself it is clearly possible - but then troubleshooting and operating suc=
h mixed network would be a simple nightmare. 
 
 

On Thu, Nov 7, 2019 at 3:= 25 AM Tarek Saad <tsaad.net@gmail= .com> wrote:

Hi SPRING WG and Chairs,=

 

We would like to request a presentation ti= me slot for

- I-D: https://tools.ietf.org= /html/draft-saad-sr-fa-link-00

- Speaker: Tarek Saad

- Desired time: 10 minutes

 

Regards,

Tarek

--_000_DM6PR19MB3689F8DA1025F1DEBC31AB11FC780DM6PR19MB3689namp_-- From nobody Thu Nov 7 14:22:06 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 7C7421208B7; Thu, 7 Nov 2019 14:21:59 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: Tim Chown via Datatracker To: Cc: last-call@ietf.org, draft-ietf-ospf-ospfv2-hbit.all@ietf.org, lsr@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.110.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: Tim Chown Message-ID: <157316531939.2026.10004843645321945107@ietfa.amsl.com> Date: Thu, 07 Nov 2019 14:21:59 -0800 Archived-At: Subject: [Lsr] Opsdir last call review of draft-ietf-ospf-ospfv2-hbit-10 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: Thu, 07 Nov 2019 22:22:00 -0000 Reviewer: Tim Chown Review result: Has Nits I have reviewed this document as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written with the intent of improving the operational aspects of the IETF drafts. Comments that are not addressed in last call may be included in AD reviews during the IESG review. Document editors and WG chairs should treat these comments just like any other last call comments. The document describes a mechanism by which a node running OSPFv2 can repel transit traffic if it is on the shortest path (and an alternative path exists - though this is not wholly clear in the document). It defines a Host-bit (H-bit) that allows the router to advertise that it is not a transit router, and it describes the changes needed to support the H-bit within a domain, and mitigations against potential routing loops. General comments: Should the document also state that it updates RFC 2328? I think the document could be clearer on the behaviour when the H-bit and MaxLinkMetric are used when there is only one path available, i.e. there is no redundant / alternative path. Section 4 of RFC 6987 implies that if there is only one path the router can still be used as a transit router, by the nature of the definition of MaxLinkMetric. The document has 3 or 4 places where it hints at behaviour, but I think it could be more explicit. It may be worth explicitly stating that OSPFv3 is not mentioned due to it having an R-bit defined for indicating whether a node/router can be used for transit traffic (see Sections 2.7 and A.2 of RFC 5340). The reasons given in Section 1 for the need for the H-bit are different to those given in Section 1 of RFC 6987 for the capability. Should these be more consistent? Also, the document later mentions “a router being gracefully isolated” as a reason, but this is not mentioned in Section 1. Nits: In the abstract: Change “This document defines a bit (Host-bit)” to “This document defines a Host bit (H-bit)” for consistency And “is a non-transit router.”” - remove the spurious “. Section 8: Where it says “beyond those already known in OSPF”, say OSPFv2. From nobody Thu Nov 7 17:08:20 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 853F4120147; Thu, 7 Nov 2019 17:08:10 -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_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=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 JwGQespn48IF; Thu, 7 Nov 2019 17:08:07 -0800 (PST) Received: from mail-vs1-xe34.google.com (mail-vs1-xe34.google.com [IPv6:2607:f8b0:4864:20::e34]) (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 3DB5C120849; Thu, 7 Nov 2019 17:08:07 -0800 (PST) Received: by mail-vs1-xe34.google.com with SMTP id m9so2674702vsq.7; Thu, 07 Nov 2019 17:08:07 -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=A1TUxeERiQU4/wfEO83GV2Fclfel/96mBzklCgBkpTE=; b=jNhqJ0aQV6w5q6+RKv15QW0UaMvtM2TVDZNkXgyaETfiHQjmPFMa9RLsJ2NQW5mCAJ DsQOuViGi3hCacp8WzwD3K0394P5dsudQKWUhnfk+yjufHRb7XGG6Aa5YfOu7dXHvS7N tA17eS9wIETleAMY0DhANge3In3mG6ALPi2meSse53gTQbax5c/ZjEAGaWwhOf6hqLcD mOcoNe7e+erL/klPpEMK3PQ1LCTA/Fe8dgbjdfJlgLF1sGDgx+rWh111dfkzwENDYUBg ofXsEJNsm75o7wfDVg56zEKTUOGIETVV2/DAkMCrnMu5gtcECsbTgTVPdHcI6vxJ/3af pR6A== 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=A1TUxeERiQU4/wfEO83GV2Fclfel/96mBzklCgBkpTE=; b=D3DYcoIGzV0ybUINuJ7aQ5ispkVQJoxR03UB/XLN4y1ISAk3PYroAUksxDHetbQ6Bx N0nKtXtGLjlF4fcf8NQwaLZ8f6X7FtbKMPhADM5+OmI3DlpBYQICcfGrOAlujgzV4gap cYCKCO97+EgnMHSREaFgb6yEQs7BTiUUy3+KQN589PHA7u8B377pCqWtegk7nVBu992R gfecQ0vOgNaJ5pwXN/G3aFjUoLNASqoSPoLb7p59UGFJPYiERmlHeKC2BTtJS8cxX0UI 0LfDSHjq8as721mJj6Ox0lxGW52QbdES3vDBPDwHHZfXp+F2C4QBmKK6frxko22ugbqG XjwA== X-Gm-Message-State: APjAAAXBEQxjKfLCxB115R0mHIA7+J/brSaVdvIFRDUcj4TXi03GMVeM +jgobslpv+W10wKSYLssgZK+Dr7NbRPQETDjSTY= X-Google-Smtp-Source: APXvYqx+yGAba7XdscIkE13yuGKKPdtuHFKGsMfzzr1AJ/GOOAiP3oQLqxxQIxEzhFGyiGRnu3fjB6CR9uw0KiAv8qU= X-Received: by 2002:a67:b917:: with SMTP id q23mr5351360vsn.205.1573175286175; Thu, 07 Nov 2019 17:08:06 -0800 (PST) MIME-Version: 1.0 References: <157316531939.2026.10004843645321945107@ietfa.amsl.com> In-Reply-To: <157316531939.2026.10004843645321945107@ietfa.amsl.com> From: Padma Pillay-Esnault Date: Thu, 7 Nov 2019 17:07:54 -0800 Message-ID: To: Tim Chown Cc: ops-dir@ietf.org, last-call@ietf.org, draft-ietf-ospf-ospfv2-hbit.all@ietf.org, lsr@ietf.org, Padma Pillay-Esnault Content-Type: multipart/alternative; boundary="0000000000001a1c810596cb6ab8" Archived-At: Subject: Re: [Lsr] Opsdir last call review of draft-ietf-ospf-ospfv2-hbit-10 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 Nov 2019 01:08:11 -0000 --0000000000001a1c810596cb6ab8 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Tim Thank you for your review and comments. See below PPE. On Thu, Nov 7, 2019 at 2:22 PM Tim Chown via Datatracker wrote: > Reviewer: Tim Chown > Review result: Has Nits > > I have reviewed this document as part of the Operational directorate's > ongoing > effort to review all IETF documents being processed by the IESG. These > comments were written with the intent of improving the operational aspect= s > of > the IETF drafts. Comments that are not addressed in last call may be > included > in AD reviews during the IESG review. Document editors and WG chairs > should > treat these comments just like any other last call comments. > > The document describes a mechanism by which a node running OSPFv2 can rep= el > transit traffic if it is on the shortest path (and an alternative path > exists - > though this is not wholly clear in the document). It defines a Host-bit > (H-bit) > that allows the router to advertise that it is not a transit router, and = it > describes the changes needed to support the H-bit within a domain, and > mitigations against potential routing loops. > > General comments: > > Should the document also state that it updates RFC 2328? > > PPE> No. This has been discussed previously during the AD review. This feature is an optional feature and RFC2328 does not require it for normal operations. > I think the document could be clearer on the behaviour when the H-bit and > MaxLinkMetric are used when there is only one path available, i.e. there > is no > redundant / alternative path. Section 4 of RFC 6987 implies that if ther= e > is > only one path the router can still be used as a transit router, by the > nature > of the definition of MaxLinkMetric. The document has 3 or 4 places where > it > hints at behaviour, but I think it could be more explicit. > > PPE> This feature goes one step further than RFC 6987 which is a best effort at stopping transit traffic. We believe that the behavior is clear that a "host router" is NOT used for transit traffic regardless whether it is the last resort path or not. Please note the CURRENT version does not restrict the feature on a specific number of paths (last resort or not) or metric value (MaxlinkMetric or not) or make any assumption in that way. However, I proposed to add this text in an earlier thread to make it even more explicit. CURRENT: This document describes the Host-bit (H-bit) functionality that prevents other OSPFv2 routers from using the host router for transit traffic in OSPFv2 routing domains. SUGGESTED NEW: This document describes the Host-bit (H-bit) functionality that prevents other OSPFv2 routers from using the host router by excluding it in path calculations for transit traffic in OSPFv2 routing domains. > It may be worth explicitly stating that OSPFv3 is not mentioned due to it > having an R-bit defined for indicating whether a node/router can be used > for > transit traffic (see Sections 2.7 and A.2 of RFC 5340). > > PPE> There was an earlier discussions regarding mentioning the OSPFv3 functionality and eventually these references were removed in subsequent versions of the H-bit draft. The R-bit is not exactly the same as H-bit, even though both are used for the similar functionality, they rely on different mechanisms in the protocol. > The reasons given in Section 1 for the need for the H-bit are different t= o > those given in Section 1 of RFC 6987 for the capability. Should these be > more > consistent? Also, the document later mentions =E2=80=9Ca router being g= racefully > isolated=E2=80=9D as a reason, but this is not mentioned in Section 1. > > PPE> We believe that this the document covers this case in bullet 1 and bullet 3 in section1. CURRENT 1. To isolate a router to avoid blackhole scenarios when there is a reload and possible long reconvergence times. <...> 3. Overloaded routers could use such a capability to temporarily repel traffic until they stabilize. To make it even more explicit: SUGGESTION 1. To gracefully isolate a router to avoid blackhole scenarios when there is a reload and possible long reconvergence times. Let me know if this addresses all your comments Thanks Padma Nits: > > In the abstract: > Change > =E2=80=9CThis document defines a bit (Host-bit)=E2=80=9D > to > =E2=80=9CThis document defines a Host bit (H-bit)=E2=80=9D > for consistency > And =E2=80=9Cis a non-transit router.=E2=80=9D=E2=80=9D - remove the spur= ious =E2=80=9C. > > Section 8: > Where it says =E2=80=9Cbeyond those already known in OSPF=E2=80=9D, say O= SPFv2. > > --0000000000001a1c810596cb6ab8 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Tim

Thank you f= or your review and comments.

See below PPE.
<= br>
On Thu,= Nov 7, 2019 at 2:22 PM Tim Chown via Datatracker <noreply@ietf.org> wrote:
<= blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-l= eft-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);pa= dding-left:1ex">Reviewer: Tim Chown
Review result: Has Nits

I have reviewed this document as part of the Operational directorate's = ongoing
effort to review all IETF documents being processed by the IESG.=C2=A0 Thes= e
comments were written with the intent of improving the operational aspects = of
the IETF drafts. Comments that are not addressed in last call may be includ= ed
in AD reviews during the IESG review.=C2=A0 Document editors and WG chairs = should
treat these comments just like any other last call comments.

The document describes a mechanism by which a node running OSPFv2 can repel=
transit traffic if it is on the shortest path (and an alternative path exis= ts -
though this is not wholly clear in the document). It defines a Host-bit (H-= bit)
that allows the router to advertise that it is not a transit router, and it=
describes the changes needed to support the H-bit within a domain, and
mitigations against potential routing loops.

General comments:

Should the document also state that it updates RFC 2328?


PPE> No. This has been discussed pr= eviously during the AD review.
This feature is an optional featur= e and RFC2328 does not require it for normal operations.
=C2=A0= =C2=A0
I think the document could be clearer on the behaviour when the H-bit and MaxLinkMetric are used when there is only one path available, i.e. there is= no
redundant / alternative path.=C2=A0 Section 4 of RFC 6987 implies that if t= here is
only one path the router can still be used as a transit router, by the natu= re
of the definition of MaxLinkMetric.=C2=A0 The document has 3 or 4 places wh= ere it
hints at behaviour, but I think it could be more explicit.


PPE> =C2=A0 This feature goes one step f= urther than RFC 6987 which is a best effort at stopping transit traffic.We believe that the behavior is clear that a "host router" is NO= T used for transit =C2=A0traffic regardless whether it is the last resort p= ath or not.
Please note the CURRENT version does not restrict the featu= re on a specific number of paths (last resort or not) or metric value (Maxl= inkMetric or not) or make any assumption in that way.=C2=A0

However, I proposed t= o add this text in an earlier thread =C2=A0to make it even more explicit.
CURRENT:
This document describes the Host-bit (H-bit) functionali= ty that prevents other OSPFv2 routers from using the host router for transi= t traffic in OSPFv2 routing domains.

SUGGESTED NEW:
This documen= t describes the Host-bit (H-bit) functionality that prevents other OSPFv2 r= outers from using the host router by excluding it in path calculations for = transit traffic in OSPFv2 routing domains.

=C2=A0
It may be worth explicitly stating that OSPFv3 is not mentioned due to it having an R-bit defined for indicating whether a node/router can be used fo= r
transit traffic (see Sections 2.7 and A.2 of RFC 5340).


PPE> There was an earlier discussio= ns regarding mentioning the OSPFv3 functionality and eventually these refer= ences were removed in subsequent versions of the H-bit draft. =C2=A0
<= div>The R-bit is not exactly the same as H-bit, even though both are used f= or the similar functionality, they rely on different mechanisms in the prot= ocol.
=C2=A0
The reasons given in Section 1 for the need for the H-bit are different to<= br> those given in Section 1 of RFC 6987 for the capability.=C2=A0 Should these= be more
consistent?=C2=A0 =C2=A0Also, the document later mentions =E2=80=9Ca router= being gracefully
isolated=E2=80=9D as a reason, but this is not mentioned in Section 1.


PPE> =C2=A0We believe that this the= document covers this case in bullet 1 and bullet 3 in section1.

C= URRENT

1.=C2=A0 To isolate a router to avoid blackhole scenarios wh= en there is a
=C2=A0 =C2=A0 =C2=A0 =C2=A0reload and possible long reconv= ergence times.
<...>
3.=C2=A0 Overloaded routers could use such= a capability to temporarily
=C2=A0 =C2=A0 =C2=A0 =C2=A0repel traffic un= til they stabilize.

To make it even more explicit:

SUGGESTION=C2=A0
1. To graceful= ly isolate a router to avoid blackhole scenarios when there is a
=C2=A0 = =C2=A0 =C2=A0 =C2=A0reload and possible long reconvergence times.

Let me know if this a= ddresses all your comments

Thanks
Padma

Nits:

In the abstract:
Change
=E2=80=9CThis document defines a bit (Host-bit)=E2=80=9D
to
=E2=80=9CThis document defines a Host bit (H-bit)=E2=80=9D
for consistency
And =E2=80=9Cis a non-transit router.=E2=80=9D=E2=80=9D - remove the spurio= us =E2=80=9C.

Section 8:
Where it says =E2=80=9Cbeyond those already known in OSPF=E2=80=9D, say OSP= Fv2.

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<157316531939.2026.10004843645321945107@ietfa.amsl.com> <86F8632C-EEC6-4444-AED8-4180C26A9619@jisc.ac.uk> In-Reply-To: <86F8632C-EEC6-4444-AED8-4180C26A9619@jisc.ac.uk> From: Padma Pillay-Esnault Date: Fri, 8 Nov 2019 22:11:00 -0800 Message-ID: To: Tim Chown Cc: "ops-dir@ietf.org" , "last-call@ietf.org" , "draft-ietf-ospf-ospfv2-hbit.all@ietf.org" , "lsr@ietf.org" , Padma Pillay-Esnault Content-Type: multipart/alternative; boundary="000000000000d9cd100596e3c33a" Archived-At: Subject: Re: [Lsr] Opsdir last call review of draft-ietf-ospf-ospfv2-hbit-10 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, 09 Nov 2019 06:18:11 -0000 --000000000000d9cd100596e3c33a Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Tim It may be worth explicitly stating that OSPFv3 is not mentioned due to it >> having an R-bit defined for indicating whether a node/router can be used >> for >> transit traffic (see Sections 2.7 and A.2 of RFC 5340). >> >> > PPE> There was an earlier discussions regarding mentioning the OSPFv3 > functionality and eventually these references were removed in subsequent > versions of the H-bit draft. > The R-bit is not exactly the same as H-bit, even though both are used for > the similar functionality, they rely on different mechanisms in the > protocol. > > > TC> Yes, I realised the R and H-bits are different though with similar > functionality. I didn=E2=80=99t realise only having read this draft now = that the > OSPFv3 text had been removed by WG consensus, in which case I am happy. > > The changes were made during the review phase, IMHO the document will benefit with the addition of a reference. I will add a sentence in the introduction mentioning that there is a similar functionality for OSPFv3 and it is achieved using the R-bit as described in RFC5340. Thanks Padma --000000000000d9cd100596e3c33a Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Tim=C2=A0

It may be worth explicitly stating that OSPFv3 is not mentioned due to it having an R-bit defined for indicating whether a node/router can be used fo= r
transit traffic (see Sections 2.7 and A.2 of RFC 5340).


PPE> There was an earlier discussions regarding mentioning the OSPF= v3 functionality and eventually these references were removed in subsequent= versions of the H-bit draft. =C2=A0
The R-bit is not exactly the same as H-bit, even though both are used = for the similar functionality, they rely on different mechanisms in the pro= tocol.

TC> Yes, I realised the R and H-bits are different though with simi= lar functionality.=C2=A0 I didn=E2=80=99t realise only having read this dra= ft now that the OSPFv3 text had been removed by WG consensus, in which case= I am happy.


The changes were mad= e during the review phase, IMHO the document will benefit=C2=A0with the add= ition of a reference.
I will add a sentence in the introduction m= entioning that there is a similar=C2= =A0functionality for OSPFv3 and it is achieved using the R-bit as described= in RFC5340.

Thanks
Padma
=C2=A0
--000000000000d9cd100596e3c33a-- From nobody Sat Nov 16 18:56:32 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 152DB1200F1; Sat, 16 Nov 2019 18:56:26 -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: 6.110.1 Auto-Submitted: auto-generated Precedence: bulk Reply-To: lsr@ietf.org Message-ID: <157395938604.20288.18318220564878244849@ietfa.amsl.com> Date: Sat, 16 Nov 2019 18:56:26 -0800 Archived-At: Subject: [Lsr] I-D Action: draft-ietf-ospf-ospfv2-hbit-11.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: Sun, 17 Nov 2019 02:56:26 -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 : Host Router Support for OSPFv2 Authors : Keyur Patel Padma Pillay-Esnault Manish Bhardwaj Serpil Bayraktar Filename : draft-ietf-ospf-ospfv2-hbit-11.txt Pages : 10 Date : 2019-11-16 Abstract: The Open Shortest Path First Version 2 (OSPFv2) does not have a mechanism for a node to repel transit traffic if it is on the shortest path. This document defines a bit (Host-bit) that enables a router to advertise that it is a non-transit router. It also describes the changes needed to support the H-bit in the domain. In addition, this document updates RFC 6987 to advertise type-2 External and Not-So-Stubby-Area (NSSA) Link State Advertisements (LSAs) with a high cost in order to repel traffic effectively. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-ospf-ospfv2-hbit-11 https://datatracker.ietf.org/doc/html/draft-ietf-ospf-ospfv2-hbit-11 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-ospf-ospfv2-hbit-11 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 Sun Nov 17 14:18:35 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 048E112008C; Sun, 17 Nov 2019 14:18:33 -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, 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, 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=XWcy7ecU; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=Cv0Q+g5A Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) 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smqpzlyOP6PMo1jCxYNzmFskUfjPkhqenxPp5QYFHZYvbwx56diPrrM6GNNAdl7H1oB9g1lgOaFVcTTG8q5FV9++FYVUSdUcbouGYHu1PgP8xmLf5DNJzWYAGI4bXHyNanntHpLiHCckxkdRXKGYuUDsoT4SxSfr/qMz4JXe2I2j7WxHCEqFfzIwCoPtv/BxoR4sba8Q6KUbdMs1MDQH3NmYrLLbTzdq9vQIRJzpNaAmA1X3enUQbK9m64pPVbG1XYwTH5O1vj29a28GiuDMyrY0hYrt//ItjHBO8eAuWuuC73Gqwuk1rLV7BCSY0MbTgDqgcIOo66ykD4jSmHhdqpi5zoT6jD+52stjbZamqyo6z2nSFbWXXKhAPAJLthAr2AslfujgiBczqhbHQD2hpnEkTaCWMWcHdOYGgxLmhLZFvpmCYuhjxmSe8jEZonQE x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="iso-8859-1" Content-ID: <93131014193B6943B0AB2121024E54FC@eurprd07.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: btconnect.com X-MS-Exchange-CrossTenant-Network-Message-Id: dc5ef385-0bda-4b99-a514-08d770b1a00b X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Nov 2019 07:40:49.7661 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: cf8853ed-96e5-465b-9185-806bfe185e30 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: +TAWteLXxBdK6El7eSiHREpqeUzHbcKoblvOQAzrIqsiqEHO+JyccZuvqYVqWR8TbYEXvEssnwaIRNsopxYw4Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR07MB5642 Archived-At: Subject: [Lsr] draft-hopps-lsr-yang-isis-reverse-metric-02 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 Nov 2019 07:40:54 -0000 Christian Some stray thoughts /intermediate system routeing/intermediate system routing/ since we have to use the American style:-( import ietf-routing { prefix "rt"; } lacks a reference clause and the reference should be in the Normative References import ietf-isis { prefix "isis"; } lacks a reference clause IS-IS reverse metric functionality [RFC8500]. YANG module must be plain text and this looks like it is not. Tom Petch From nobody Sun Nov 24 21:39:34 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 A3DB5120072; Sun, 24 Nov 2019 21:39:27 -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: 6.111.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: lsr@ietf.org Message-ID: <157466036755.323.14891026362925123994@ietfa.amsl.com> Date: Sun, 24 Nov 2019 21:39:27 -0800 Archived-At: Subject: [Lsr] I-D Action: draft-ietf-lsr-ospf-prefix-originator-05.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 Nov 2019 05:39:28 -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 Prefix Originator Extension Authors : Aijun Wang Acee Lindem Jie Dong Peter Psenak Ketan Talaulikar Filename : draft-ietf-lsr-ospf-prefix-originator-05.txt Pages : 12 Date : 2019-11-24 Abstract: This document defines Open Shortest Path First (OSPF) encodings to advertise the router-id of the originator of inter-area prefixes for OSPFv2 and OSPFv3 Link-State Advertisements (LSAs). The source originator is needed 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-05 https://datatracker.ietf.org/doc/html/draft-ietf-lsr-ospf-prefix-originator-05 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-lsr-ospf-prefix-originator-05 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 Sun Nov 24 21:57:15 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 DF75212029C; Sun, 24 Nov 2019 21:57:12 -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_HELO_NONE=0.001, 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 1mhRC8w3Ya3W; Sun, 24 Nov 2019 21:57:09 -0800 (PST) Received: from m17616.mail.qiye.163.com (m17616.mail.qiye.163.com [59.111.176.16]) by ietfa.amsl.com (Postfix) with ESMTP id 6E245120289; Sun, 24 Nov 2019 21:57:07 -0800 (PST) Received: from WangajPC (unknown [219.142.69.77]) by m17616.mail.qiye.163.com (Hmail) with ESMTPA id 137211054C4; Mon, 25 Nov 2019 13:57:00 +0800 (CST) From: "Aijun Wang" To: Cc: References: <157466036755.323.14891026362925123994@ietfa.amsl.com> In-Reply-To: <157466036755.323.14891026362925123994@ietfa.amsl.com> Date: Mon, 25 Nov 2019 13:56:59 +0800 Message-ID: <0a1101d5a355$271b5cf0$755216d0$@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: AdWjUtTK1KZi3D7oRQmiPPJLA3fRHgAAA6Sg Content-Language: zh-cn X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgYFAkeWUFZVkpVSEJLS0tKTkhOT0pOTU5ZV1koWU FKTEtLSjdXWS1ZQUlXWQkOFx4IWUFZNTQpNjo3JCkuNz5ZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6NDI6PSo5DjgxLg0NPAxIODg1 PwIwClFVSlVKTkxPTU1KT0lNTkNPVTMWGhIXVQwaFRwaEhEOFTsPCBIVHBMOGlUUCRxVGBVFWVdZ EgtZQVlJSkJVSk9JVU1CVUxMWVdZCAFZQUhMSk83Bg++ X-HM-Tid: 0a6ea122746e9374kuws137211054c4 Archived-At: Subject: [Lsr] =?gb2312?b?tPC4tDogIEktRCBBY3Rpb246IGRyYWZ0LWlldGYtbHNy?= =?gb2312?b?LW9zcGYtcHJlZml4LW9yaWdpbmF0b3ItMDUudHh0?= 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 Nov 2019 05:57:13 -0000 Hi, Folks: The updated version includes mainly the descriptions for the followings: 1. IANA Early Allocation for the " Prefix Source Router-ID" Sub-TLV in OSPFv2 and OSPFv3 related registries=20 2. Process for originator information of external prefixes. More comments are welcome. After this update, we think the draft is stable and ready for WG Last = Call. Would the chair to initiate the WG Last Call then? Thanks in advance. Best Regards. Aijun Wang China Telecom -----=D3=CA=BC=FE=D4=AD=BC=FE----- =B7=A2=BC=FE=C8=CB: lsr-bounces@ietf.org [mailto:lsr-bounces@ietf.org] = =B4=FA=B1=ED internet-drafts@ietf.org =B7=A2=CB=CD=CA=B1=BC=E4: 2019=C4=EA11=D4=C225=C8=D5 13:39 =CA=D5=BC=FE=C8=CB: i-d-announce@ietf.org =B3=AD=CB=CD: lsr@ietf.org =D6=F7=CC=E2: [Lsr] I-D Action: = draft-ietf-lsr-ospf-prefix-originator-05.txt 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 Prefix Originator Extension Authors : Aijun Wang Acee Lindem Jie Dong Peter Psenak Ketan Talaulikar Filename : draft-ietf-lsr-ospf-prefix-originator-05.txt Pages : 12 Date : 2019-11-24 Abstract: This document defines Open Shortest Path First (OSPF) encodings to advertise the router-id of the originator of inter-area prefixes for OSPFv2 and OSPFv3 Link-State Advertisements (LSAs). The source originator is needed 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-05 https://datatracker.ietf.org/doc/html/draft-ietf-lsr-ospf-prefix-originat= or- 05 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-lsr-ospf-prefix-originator= -05 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. 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APjAAAWAzug9PoVlvrh8VMv1i89YAZ05FY8vOWoDY8EKR7rNd5jbcPIG 2cH/mcNOxGVFTNIJyv1FE1LEhxyT X-Google-Smtp-Source: APXvYqyx6vMOfX0BrB1Ac3wdDGIfFa5YMnAbSS/scRp04zoNQ4fR4CB5j578ITuRkdMOT5I5fhgFFQ== X-Received: by 2002:a63:f702:: with SMTP id x2mr29101649pgh.300.1574754936703; Mon, 25 Nov 2019 23:55:36 -0800 (PST) Received: from [10.68.192.62] ([103.5.140.158]) by smtp.gmail.com with ESMTPSA id p7sm11013935pfn.14.2019.11.25.23.55.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 25 Nov 2019 23:55:35 -0800 (PST) Content-Type: multipart/alternative; boundary=Apple-Mail-F35B91AF-BF75-43E3-867E-1B0379EEA2A1 Content-Transfer-Encoding: 7bit From: Jeff Tantsura Mime-Version: 1.0 (1.0) Date: Tue, 26 Nov 2019 16:55:34 +0900 Message-Id: <4B05D07A-4A42-4477-8BAF-F3039A7341EB@gmail.com> References: <83E52E7D-F38B-4676-8A62-80DAA5233DDA@cisco.com> Cc: "lsr@ietf.org" , Christian Hopps In-Reply-To: <83E52E7D-F38B-4676-8A62-80DAA5233DDA@cisco.com> To: "Acee Lindem (acee)" X-Mailer: iPhone Mail (17A878) Archived-At: Subject: Re: [Lsr] "YANG Module for IS-IS Reverse Metric" - draft-hopps-lsr-yang-isis-reverse-metric-02 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 Nov 2019 07:55:46 -0000 --Apple-Mail-F35B91AF-BF75-43E3-867E-1B0379EEA2A1 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Yes/support Regards, Jeff > On Nov 25, 2019, at 21:27, Acee Lindem (acee) wrote: >=20 > =EF=BB=BF > This begins a two week LSR Working Group adoption call for the subject doc= ument. > =20 > https://datatracker.ietf.org/doc/draft-hopps-lsr-yang-isis-reverse-metric/= > =20 > Please indicate your support or objection to adoption to the LSR list (lsr= @ietf.org) prior to 12:00 AM UTC on December 10th, 2019. > =20 > Thanks, > Acee > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr --Apple-Mail-F35B91AF-BF75-43E3-867E-1B0379EEA2A1 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Yes/support

Regards= ,
Jeff

On Nov 2= 5, 2019, at 21:27, Acee Lindem (acee) <acee@cisco.com> wrote:

<= /blockquote>
=EF=BB=BF

This begins a two we= ek LSR Working Group adoption call for the subject document.

 

https://d= atatracker.ietf.org/doc/draft-hopps-lsr-yang-isis-reverse-metric/

 

Please indicate your= support or objection to adoption to the LSR list (lsr@ietf.org) prior to 12:00 AM UTC on December 10th, 2= 019.

 

Thanks,
Acee

_______________________________________________
Lsr ma= iling list
Lsr@ietf.org
https://www.ietf.org= /mailman/listinfo/lsr
= --Apple-Mail-F35B91AF-BF75-43E3-867E-1B0379EEA2A1-- From nobody Tue Nov 26 07:29:09 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 41C1E1202A0; Tue, 26 Nov 2019 07:29:03 -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: 6.111.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: lsr@ietf.org Message-ID: <157478214322.13613.17606093146329682951@ietfa.amsl.com> Date: Tue, 26 Nov 2019 07:29:03 -0800 Archived-At: Subject: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-04.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: Tue, 26 Nov 2019 15:29:03 -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 Huaimo Chen Tony Przygienda Dave Cooper Luay Jalil Srinath Dontula Filename : draft-ietf-lsr-dynamic-flooding-04.txt Pages : 47 Date : 2019-11-26 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-04 https://datatracker.ietf.org/doc/html/draft-ietf-lsr-dynamic-flooding-04 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-lsr-dynamic-flooding-04 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 Wed Nov 27 10:50:38 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 07AB2120BBE; Wed, 27 Nov 2019 10:50:37 -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 btDwocFJM-ep; Wed, 27 Nov 2019 10:50:35 -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 F2DE0120B66; Wed, 27 Nov 2019 10:50:34 -0800 (PST) Received: by rfc-editor.org (Postfix, from userid 30) id EE8F4F4071D; Wed, 27 Nov 2019 10:50:07 -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: <20191127185007.EE8F4F4071D@rfc-editor.org> Date: Wed, 27 Nov 2019 10:50:07 -0800 (PST) Archived-At: Subject: [Lsr] =?utf-8?q?RFC_8687_on_OSPF_Routing_with_Cross-Address_Fami?= =?utf-8?q?ly_Traffic_Engineering_Tunnels?= 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 Nov 2019 18:50:37 -0000 A new Request for Comments is now available in online RFC libraries. RFC 8687 Title: OSPF Routing with Cross-Address Family Traffic Engineering Tunnels Author: A. Smirnov, A. Retana, M. Barnes Status: Standards Track Stream: IETF Date: November 2019 Mailbox: as@cisco.com, alvaro.retana@futurewei.com, michael_barnes@usa.net Pages: 8 Updates: RFC 5786 I-D Tag: draft-ietf-ospf-xaf-te-07.txt URL: https://www.rfc-editor.org/info/rfc8687 DOI: 10.17487/RFC8687 When using Traffic Engineering (TE) in a dual-stack IPv4/IPv6 network, the Multiprotocol Label Switching (MPLS) TE Label Switched Path (LSP) infrastructure may be duplicated, even if the destination IPv4 and IPv6 addresses belong to the same remote router. In order to achieve an integrated MPLS TE LSP infrastructure, OSPF routes must be computed over MPLS TE tunnels created using information propagated in another OSPF instance. This issue is solved by advertising cross-address family (X-AF) OSPF TE information. This document describes an update to RFC 5786 that allows for the easy identification of a router's local X-AF IP addresses. 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. 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The RFC Editor Team Association Management Solutions, LLC From nobody Fri Nov 29 19:54:18 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 3F8E51200D6; Fri, 29 Nov 2019 19:54:17 -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 XTfEz1VBxeUn; Fri, 29 Nov 2019 19:54:15 -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 F1F3212009E; Fri, 29 Nov 2019 19:54:14 -0800 (PST) Received: from lhreml704-cah.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 3826A868FD02648EE5B5; Sat, 30 Nov 2019 03:54:10 +0000 (GMT) Received: from DGGEMM405-HUB.china.huawei.com (10.3.20.213) by lhreml704-cah.china.huawei.com (10.201.108.45) with Microsoft SMTP Server (TLS) id 14.3.408.0; Sat, 30 Nov 2019 03:54:10 +0000 Received: from DGGEMM509-MBX.china.huawei.com ([169.254.9.145]) by DGGEMM405-HUB.china.huawei.com ([10.3.20.213]) with mapi id 14.03.0439.000; Sat, 30 Nov 2019 11:54:07 +0800 From: Huzhibo To: "draft-ietf-lsr-dynamic-flooding@ietf.org" CC: "lsr@ietf.org" , "i-d-announce@ietf.org" Thread-Topic: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-04.txt Thread-Index: AQHVpG5gFwfvUsjkqU6vwLnm9KH9LKejD3ng Date: Sat, 30 Nov 2019 03:54:06 +0000 Message-ID: <06CF729DA0D6854E8C1E5121AC3330DFAF48E222@dggemm509-mbx.china.huawei.com> References: <157478214322.13613.17606093146329682951@ietfa.amsl.com> In-Reply-To: <157478214322.13613.17606093146329682951@ietfa.amsl.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.219.232] 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] I-D Action: draft-ietf-lsr-dynamic-flooding-04.txt 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, 30 Nov 2019 03:54:17 -0000 Hi authors: Regarding this Draft, I have always had a question, how does dynamic fl= ooding ensure the reliability of Flooding under multiple points of failure.= Flooding depends on the consistent LSDB / Flooding SPF tree across the ent= ire network, and the consistent LSDB on the entire network depends on Flood= ing. There will be different nodes with different LSDBs. In this case, how = to ensure the reliability of Dynamic flooding? IETF 106 meeting says that p= roducts have been implemented for Dynamic Flooding. Has the reliability of = Dynamic Flooding been tested in multi-point failure scenarios? Thank you Zhibo -----Original Message----- From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of internet-drafts@ietf.o= rg Sent: Tuesday, November 26, 2019 11:29 PM To: i-d-announce@ietf.org Cc: lsr@ietf.org Subject: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-04.txt A New Internet-Draft is available from the on-line Internet-Drafts director= ies. 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 Huaimo Chen Tony Przygienda Dave Cooper Luay Jalil Srinath Dontula Filename : draft-ietf-lsr-dynamic-flooding-04.txt Pages : 47 Date : 2019-11-26 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-04 https://datatracker.ietf.org/doc/html/draft-ietf-lsr-dynamic-flooding-04 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-lsr-dynamic-flooding-04 Please note that it may take a couple of minutes from the time of submissio= n 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/ _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr From nobody Sat Nov 30 08:21:12 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 2A8C0120072; Sat, 30 Nov 2019 08:21:00 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: =?utf-8?q?=C3=89ric_Vyncke_via_Datatracker?= To: "The IESG" Cc: draft-ietf-ospf-ospfv2-hbit@ietf.org, Yingzhen Qu , aretana.ietf@gmail.com, lsr-chairs@ietf.org, yingzhen.ietf@gmail.com, lsr@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.111.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: =?utf-8?q?=C3=89ric_Vyncke?= Message-ID: <157513086016.14490.11992325783200183386.idtracker@ietfa.amsl.com> Date: Sat, 30 Nov 2019 08:21:00 -0800 Archived-At: Subject: [Lsr] =?utf-8?q?=C3=89ric_Vyncke=27s_Discuss_on_draft-ietf-ospf-?= =?utf-8?q?ospfv2-hbit-11=3A_=28with_DISCUSS_and_COMMENT=29?= 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: Sat, 30 Nov 2019 16:21:00 -0000 Éric Vyncke has entered the following ballot position for draft-ietf-ospf-ospfv2-hbit-11: Discuss When responding, please keep the subject line intact and reply to all email addresses included in the To and CC lines. (Feel free to cut this introductory paragraph, however.) Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html for more information about IESG DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/ ---------------------------------------------------------------------- DISCUSS: ---------------------------------------------------------------------- Thank you for the work put into this document. The short document is easy to read even if I wonder whether it is useful to spend time on IPv4-only protocol ;-) The deployment issue (section 5) has raised a DISCUSS of mine and I would appreciate a reply on this DISCUSS. Regards, -éric == DISCUSS == -- Section 5 -- The risk of having inconsistent view of the topology with H-bit aware and unaware routers seems possible to me (albeit perhaps only transient). Has this feature been tested / simulated in large scale networks? ---------------------------------------------------------------------- COMMENT: ---------------------------------------------------------------------- Feel free to ignore my COMMENTs and NIT. == COMMENTS == -- Generic -- Mentioning that the H-bit of OSPFv2 is the reverse of the R-bit of OSPFv3 would be useful. -- Section 1 -- A description of "Closet Switches" would be welcome. -- Section 3 -- Isn't the wording "host router" an oxymoron ? == NITS == -- Section 8 -- I recommend reading and following the suggestions of RFC 8126 (how to write the IANA considerations)