IETF Logo Mail Archive

Re: [Lsr] New Version Notification for draft-xu-lsr-flooding-reduction-in-clos-01.txt

Tony Li <tony.li@tony.li> Thu, 23 November 2023 16:39 UTC

Return-Path: <tony1athome@gmail.com>
X-Original-To: lsr@ietfa.amsl.com
Delivered-To: lsr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E3284C14CF1E for <lsr@ietfa.amsl.com>; Thu, 23 Nov 2023 08:39:08 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.505
X-Spam-Level:
X-Spam-Status: No, score=-1.505 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, HTML_MESSAGE=0.001, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_BLOCKED=0.001, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=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 ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qIPM4xtvU0I1 for <lsr@ietfa.amsl.com>; Thu, 23 Nov 2023 08:39:04 -0800 (PST)
Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CD19FC14F5E0 for <lsr@ietf.org>; Thu, 23 Nov 2023 08:39:04 -0800 (PST)
Received: by mail-pf1-x430.google.com with SMTP id d2e1a72fcca58-6b2018a11efso1061621b3a.0 for <lsr@ietf.org>; Thu, 23 Nov 2023 08:39:04 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1700757544; x=1701362344; darn=ietf.org; h=references:to:cc:in-reply-to:date:subject:mime-version:message-id :from:sender:from:to:cc:subject:date:message-id:reply-to; bh=oeU/7p0msfdGYvU1NOfyG+ikUrVxsD9iUiQCi63UhG0=; b=SKyYaseIpPd9qNRLwEDMJiiFNlFjhsm+1cJN9r/LD2xWzNf2k45yeR/aWLHQaueFV+ lzhFv0mADppF2vE/pQNmRBjEJvqoZyVfKihiZb2QqmxJPzzVwTS1citBQSkE7FyZMsZc mFyx1ylpbSQ0gdlhqfsNJl3ArzrVVtSCd09AE0Cbex3+RBbzJw6kp9FBXFjpkKhcNlGn kTUVpn8m04FQiZ84BV1QUSVfsjwJ7vjyA/K1sFAH/EGc5ZhE9PDCmPwQhRXLjL97mqad J6YFK2lH/8D+FQbzAn9ou6g5fHf3mMRTYsOndhXV2jT4H3MTVvjPKCXcPoy+y/IDM2zQ AMcA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700757544; x=1701362344; h=references:to:cc:in-reply-to:date:subject:mime-version:message-id :from:sender:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=oeU/7p0msfdGYvU1NOfyG+ikUrVxsD9iUiQCi63UhG0=; b=r8KlpDTBVIPerQC8+MaTraAl9Up6OnKOirI9r/w/4zDSj2VoZSPCsctT6oYi1QZBzf 6qNsZ17tBZfpQOUk4GhgdKDjfWXdDnXyC79jDBAK0JZlgz5+OLSnK/WRd1zaV4Te9OLp /9TtYM8YHzk31Dgho2Gd+8ChdDsHhEHz5hno9C3V5v31+qyOo9nmzd9RJhp/UO9ZoVBT 9pFZqfmNHh5bYLvqkIifr9ZgBuqCc34QqxlL4/3LIdjTHIgrKW+Vra87r6zjpl0axuGF f+kJix7osgzw3/fDVPA4T/eZfkRAyuhoebw/7LReoEIUcbD6E72MaUx8Vr+qi+u1IGfL 18Xg==
X-Gm-Message-State: AOJu0Yxfu2Mfr88Eb06YCMC9a5WrklzzTGFTWNXXuEIYp9/gv4q3942d loVGr1jLzC/bQDWg6SNoakDXsLoNPxs=
X-Google-Smtp-Source: AGHT+IGA+PjoaXKAExN68NuxPXi27g43ocNYYdlZmriLxA/umFrZdwSzf5baWn7+apLes9w+wrdaPg==
X-Received: by 2002:a05:6a00:2d90:b0:6c4:d22d:eb96 with SMTP id fb16-20020a056a002d9000b006c4d22deb96mr33498pfb.8.1700757544183; Thu, 23 Nov 2023 08:39:04 -0800 (PST)
Received: from smtpclient.apple (c-73-158-206-100.hsd1.ca.comcast.net. [73.158.206.100]) by smtp.gmail.com with ESMTPSA id c20-20020aa79534000000b006cb98420d17sm1466911pfp.15.2023.11.23.08.39.03 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 23 Nov 2023 08:39:03 -0800 (PST)
Sender: Tony Li <tony1athome@gmail.com>
From: Tony Li <tony.li@tony.li>
Message-Id: <56D50D5A-5994-4B8F-B692-AA121D207E8F@tony.li>
Content-Type: multipart/alternative; boundary="Apple-Mail=_4323939E-EF61-4DCD-9677-E7AFC3686CDD"
Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.200.91.1.1\))
Date: Thu, 23 Nov 2023 08:38:52 -0800
In-Reply-To: <AM6P192MB0375C1BCCFEF97403A59F4B581B9A@AM6P192MB0375.EURP192.PROD.OUTLOOK.COM>
Cc: "lsr@ietf.org" <lsr@ietf.org>
To: "xuxiaohu_ietf@hotmail.com" <xuxiaohu_ietf@hotmail.com>
References: <170062421806.30204.5972155474039795586@ietfa.amsl.com> <AM6P192MB0375C1BCCFEF97403A59F4B581B9A@AM6P192MB0375.EURP192.PROD.OUTLOOK.COM>
X-Mailer: Apple Mail (2.3774.200.91.1.1)
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/zS8gASGuQgoGVmx69KwP2PGEhhk>
Subject: Re: [Lsr] New Version Notification for draft-xu-lsr-flooding-reduction-in-clos-01.txt
X-BeenThere: lsr@ietf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: Link State Routing Working Group <lsr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/lsr>, <mailto:lsr-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/lsr/>
List-Post: <mailto:lsr@ietf.org>
List-Help: <mailto:lsr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/lsr>, <mailto:lsr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 23 Nov 2023 16:39:09 -0000

Hi Xiaohu,

What you’re proposing is already described in IS-IS Mesh Groups (https://www.rfc-editor.org/rfc/rfc2973.html) and improved upon in Dynamic Flooding (https://datatracker.ietf.org/doc/html/draft-ietf-lsr-dynamic-flooding).

Regards,
Tony


> On Nov 23, 2023, at 8:29 AM, xuxiaohu_ietf@hotmail.com wrote:
> 
> Hi all,
> 
> Any comments or suggestions are welcome.
> 
> Best regards,
> Xiaohu
> 
> 
> 发件人: internet-drafts@ietf.org <internet-drafts@ietf.org>
> 日期: 星期三, 2023年11月22日 11:37
> 收件人: Xiaohu Xu <xuxiaohu_ietf@hotmail.com>
> 主题: New Version Notification for draft-xu-lsr-flooding-reduction-in-clos-01.txt
> 
> A new version of Internet-Draft draft-xu-lsr-flooding-reduction-in-clos-01.txt
> has been successfully submitted by Xiaohu Xu and posted to the
> IETF repository.
> 
> Name:     draft-xu-lsr-flooding-reduction-in-clos
> Revision: 01
> Title:    Flooding Reduction in CLOS Networks
> Date:     2023-11-22
> Group:    Individual Submission
> Pages:    6
> URL:      https://www.ietf.org/archive/id/draft-xu-lsr-flooding-reduction-in-clos-01.txt
> Status:   https://datatracker.ietf.org/doc/draft-xu-lsr-flooding-reduction-in-clos/
> HTMLized: https://datatracker.ietf.org/doc/html/draft-xu-lsr-flooding-reduction-in-clos
> Diff:     https://author-tools.ietf.org/iddiff?url2=draft-xu-lsr-flooding-reduction-in-clos-01
> 
> Abstract:
> 
>    In a CLOS topology, an OSPF (or ISIS) router may receive identical
>    copies of an LSA (or LSP) from multiple OSPF (or ISIS) neighbors.
>    Moreover, two OSPF (or ISIS) neighbors may exchange the same LSA (or
>    LSP) simultaneously.  This results in unnecessary flooding of link-
>    state information, which wastes the precious resources of OSPF (or
>    ISIS) routers.  Therefore, this document proposes extensions to OSPF
>    (or ISIS) to reduce this flooding within CLOS networks.  The
>    reduction of OSPF (or ISIS) flooding is highly beneficial for
>    improving the scalability of CLOS networks.
> 
> 
> 
> The IETF Secretariat
> 
> 
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr

v2.23.0 | Report a Bug | By Email