[Lsr] Consensus Call on LSR WG work on "Leaderless Flooding Algorithm for Distributed Flood Reduction to allow reduced configuration, minimal blast radius, and ease of incremental deployment"

Acee Lindem <acee.ietf@gmail.com> Mon, 18 November 2024 14:40 UTC

Return-Path: <acee.ietf@gmail.com>
X-Original-To: lsr@ietfa.amsl.com
Delivered-To: lsr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 46285C151707 for <lsr@ietfa.amsl.com>; Mon, 18 Nov 2024 06:40:49 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.104
X-Spam-Level:
X-Spam-Status: No, score=-2.104 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_BLOCKED=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_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=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 ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9f7T1AsnMASf for <lsr@ietfa.amsl.com>; Mon, 18 Nov 2024 06:40:45 -0800 (PST)
Received: from mail-qt1-x82e.google.com (mail-qt1-x82e.google.com [IPv6:2607:f8b0:4864:20::82e]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 771D3C14F6B4 for <lsr@ietf.org>; Mon, 18 Nov 2024 06:40:40 -0800 (PST)
Received: by mail-qt1-x82e.google.com with SMTP id d75a77b69052e-4609967ab7eso32159791cf.3 for <lsr@ietf.org>; Mon, 18 Nov 2024 06:40:40 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1731940839; x=1732545639; darn=ietf.org; h=to:date:message-id:subject:mime-version:from:from:to:cc:subject :date:message-id:reply-to; bh=MCEV0NN8p5FyAe+BGGRdcXG67Pw8020uACo1BuCjwfI=; b=bH9C5gUwhdjpFh+6nifwH8PJv3FREHOwAJUqoH5Xbxl5O0tWj+KpD7UQrIF6dMNJ1x v3dgX75oTEYsv1TR2lplp7yemu33KqdVnt2611xPoBkXpO8ODXxV7wDI6fkXsk1QPfgI K/fwYSWY1TQ6SL/1mpsdOj3K6ElUGWC3JRh9eLbQLusOFClJXM8DfKhFLSNFZze7hV9D oBgTIbCKkxzGPcW/XowiQaYoKrt5EknH4Wvdjesk13p5BCcbt6Z4JslG7xoPyCm314x9 pbd52leVnWbu53/M2ODGmDaZeLTYXF++CGYo004peXrPTFH5xMa80y1yxKLkuuJdm1yD nrrA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731940839; x=1732545639; h=to:date:message-id:subject:mime-version:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=MCEV0NN8p5FyAe+BGGRdcXG67Pw8020uACo1BuCjwfI=; b=qqGgy1IeMXIdxA9+XeRYSLCyitoVNmy+ZDJ34aCwSAzvveDfMXixzzGG4FuqnLQpPY G2cUQytHC01LG+2UZtOyORpTEzckPYO7Hi2gDt9SNfcFlNuu6Je0sSEN6vpX7R6ZINfV YyLmqumpvVcXrH55lm9adlZD/EjqKfMwWhxKaBEoQiZ4TDDj8ouC2PmikiEE766k+hT6 F727FEKnddgyAn+ZmhT8bn4D2yS+nKTUyVW/3WZvQQPWugkvFyTd2AyEVbCGicoG/na3 D9kGZQBzYmnEXLmRDnM7+h2DVjVqp/2Zo1c3I8J74/hOlTIwBPxqWCIHsjHhCbYA5GC4 34mQ==
X-Gm-Message-State: AOJu0YyBjfammYoxEl05oq+8q+uAzkQ4yYdo0iIoRQCMZozT9QEx0G+0 UB9D4feHgo5QDWFUuZwXbtM1wgJHgnhAoEjG0x6YimPj7xYx11Pt47iytg==
X-Google-Smtp-Source: AGHT+IFdpOhJgE/Dc1kBrnAKgAiOjrgiMjJMpo6qxHxTS0j3TTHQD5y+kFUU5ewtyTeHALK52t1yJw==
X-Received: by 2002:a05:622a:5293:b0:461:1532:d765 with SMTP id d75a77b69052e-46363df1751mr165599671cf.5.1731940838959; Mon, 18 Nov 2024 06:40:38 -0800 (PST)
Received: from smtpclient.apple ([2605:a601:a6e6:6300:a9bf:f954:5cc5:24a4]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4635aa15629sm59257901cf.46.2024.11.18.06.40.38 for <lsr@ietf.org> (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Nov 2024 06:40:38 -0800 (PST)
From: Acee Lindem <acee.ietf@gmail.com>
Content-Type: multipart/alternative; boundary="Apple-Mail=_27AADE23-1846-4A6E-8014-6BE38591D448"
Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3818.100.11.1.3\))
Message-Id: <AD308292-D937-42C5-8CC6-C76C5A08B08A@gmail.com>
Date: Mon, 18 Nov 2024 09:40:28 -0500
To: lsr <lsr@ietf.org>
X-Mailer: Apple Mail (2.3818.100.11.1.3)
Message-ID-Hash: V5ZR7RG56ME4RJBTN7LQLXLG5RB6FTWT
X-Message-ID-Hash: V5ZR7RG56ME4RJBTN7LQLXLG5RB6FTWT
X-MailFrom: acee.ietf@gmail.com
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-lsr.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header
X-Mailman-Version: 3.3.9rc6
Precedence: list
Subject: [Lsr] Consensus Call on LSR WG work on "Leaderless Flooding Algorithm for Distributed Flood Reduction to allow reduced configuration, minimal blast radius, and ease of incremental deployment"
List-Id: Link State Routing Working Group <lsr.ietf.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/4HZD9pxaHMCDhfUQMtb4mepBW4Q>
List-Archive: <https://mailarchive.ietf.org/arch/browse/lsr>
List-Help: <mailto:lsr-request@ietf.org?subject=help>
List-Owner: <mailto:lsr-owner@ietf.org>
List-Post: <mailto:lsr@ietf.org>
List-Subscribe: <mailto:lsr-join@ietf.org>
List-Unsubscribe: <mailto:lsr-leave@ietf.org>

During the IETF 121 LSR meeting, we had a very good discussion of https://datatracker.ietf.org/doc/draft-ietf-lsr-distoptflood/

While the CDS flooding reduction algorithm itself was interesting, the main area of the discussion was distributed flooding reduction algorithm selection and its configuration and deployment. 

Today, we have RFC 9667 “Dynamic Flooding on Dense Graphs” which provides leader-based supporting both centralized and distributed flooding reduction algorithm selection. With the mechanism, an area leader is selected from among the OSPF routers in the area supporting flooding reduction and this leader selects the flooding reduction algorithm for the area. 

The question to be answered by this consensus call is whether or not we want to work on an additional mechanism just for distributed flooding reduction to allow for reduced configuration, minimal blast radius, and ease of incremental deployment. 

Please send your support or opposition to this list before Tuesday, December 3rd. 

As WG Co-Chair, 
Acee