IETF Logo Mail Archive

Re: [babel] BABEL / MANET / ROLL and multicast

Juliusz Chroboczek <jch@irif.fr> Tue, 03 May 2022 23:08 UTC

Return-Path: <jch@irif.fr>
X-Original-To: babel@ietfa.amsl.com
Delivered-To: babel@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8ACCEC159A3D; Tue, 3 May 2022 16:08:24 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.899
X-Spam-Level:
X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
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 2PhLC2vDwSEb; Tue, 3 May 2022 16:08:22 -0700 (PDT)
Received: from korolev.univ-paris7.fr (korolev.univ-paris7.fr [IPv6:2001:660:3301:8000::1:2]) (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 31357C15E403; Tue, 3 May 2022 16:08:15 -0700 (PDT)
Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/82085) with ESMTP id 243N8ADA025801; Wed, 4 May 2022 01:08:10 +0200
Received: from mailhub.math.univ-paris-diderot.fr (localhost [127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTP id 753E7F02BC; Wed, 4 May 2022 01:08:10 +0200 (CEST)
X-Virus-Scanned: amavisd-new at math.univ-paris-diderot.fr
Received: from mailhub.math.univ-paris-diderot.fr ([127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id lQda-bmvVCvu; Wed, 4 May 2022 01:08:08 +0200 (CEST)
Received: from pirx.irif.fr (unknown [78.194.40.74]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id 96E74F02BA; Wed, 4 May 2022 01:08:08 +0200 (CEST)
Date: Wed, 04 May 2022 01:08:08 +0200
Message-ID: <87r15a6wpz.wl-jch@irif.fr>
From: Juliusz Chroboczek <jch@irif.fr>
To: Ted Lemon <mellon@fugue.com>
Cc: David Schinazi <dschinazi.ietf@gmail.com>, Donald Eastlake <d3e3e3@gmail.com>, Babel at IETF <babel@ietf.org>, babel-chairs <babel-chairs@ietf.org>
In-Reply-To: <CAPt1N1kgvT27rxr9o_X4WV=afhK6HCi+Z3Y+qunqEhrMtp=48g@mail.gmail.com>
References: <CAF4+nEFo4-XRhMLGHe-BaFferQ6pPNVHK7Ve7qA8se+fC4DECw@mail.gmail.com> <CAPDSy+5voFRf8j=kHhetxsiRRHAF00YjsRnCOh7kRB5cmF6gbg@mail.gmail.com> <87y1zi782h.wl-jch@irif.fr> <CAPDSy+61g73sVYme3a9caYU4s0CaBKZeQ7_PUt2RrKA03XhhTA@mail.gmail.com> <CAPt1N1kgvT27rxr9o_X4WV=afhK6HCi+Z3Y+qunqEhrMtp=48g@mail.gmail.com>
User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/27.1 Mule/6.0
MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue")
Content-Type: text/plain; charset="US-ASCII"
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (korolev.univ-paris7.fr [194.254.61.138]); Wed, 04 May 2022 01:08:10 +0200 (CEST)
X-Miltered: at korolev with ID 6271B5DA.001 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)!
X-j-chkmail-Enveloppe: 6271B5DA.001 from mailhub.math.univ-paris-diderot.fr/mailhub.math.univ-paris-diderot.fr/null/mailhub.math.univ-paris-diderot.fr/<jch@irif.fr>
X-j-chkmail-Score: MSGID : 6271B5DA.001 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000
X-j-chkmail-Status: Ham
Archived-At: <https://mailarchive.ietf.org/arch/msg/babel/lkajlz_0Of7VhTZ7CUFp8lSYBnc>
Subject: Re: [babel] BABEL / MANET / ROLL and multicast
X-BeenThere: babel@ietf.org
X-Mailman-Version: 2.1.34
Precedence: list
List-Id: "A list for discussion of the Babel Routing Protocol." <babel.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/babel>, <mailto:babel-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/babel/>
List-Post: <mailto:babel@ietf.org>
List-Help: <mailto:babel-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/babel>, <mailto:babel-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 03 May 2022 23:08:24 -0000

> FWIW, multicast service discovery on constrained mesh networks is a really bad
> use of network resources. Every device gets the multicast, whether it offers
> the service or not, so spends battery power and network bandwidth on this.

Not necessarily.  You could use a distinct multicast group for each service.
But I guess that particular ship has sailed.

-- Juliusz

v2.23.0 | Report a Bug | By Email