Re: [homenet] Dynamic metrics in IS-IS

Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr> Wed, 30 September 2015 11:26 UTC

Return-Path: <jch@pps.univ-paris-diderot.fr>
X-Original-To: homenet@ietfa.amsl.com
Delivered-To: homenet@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EBFE41B5D53 for <homenet@ietfa.amsl.com>; Wed, 30 Sep 2015 04:26:07 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.55
X-Spam-Level:
X-Spam-Status: No, score=-1.55 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_EQ_FR=0.35] autolearn=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 6ASExCXvhsg2 for <homenet@ietfa.amsl.com>; Wed, 30 Sep 2015 04:26:07 -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 C42C41B5D52 for <homenet@ietf.org>; Wed, 30 Sep 2015 04:26:06 -0700 (PDT)
Received: from potemkin.univ-paris7.fr (potemkin.univ-paris7.fr [IPv6:2001:660:3301:8000::1:1]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/56228) with ESMTP id t8UBQ55w022248 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 30 Sep 2015 13:26:05 +0200
Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by potemkin.univ-paris7.fr (8.14.4/8.14.4/relay2/56228) with ESMTP id t8UBQ4RY004257; Wed, 30 Sep 2015 13:26:04 +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 E171961FA8; Wed, 30 Sep 2015 13:26:04 +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 IY-uYfjPsfiT; Wed, 30 Sep 2015 13:26:03 +0200 (CEST)
Received: from trurl.pps.univ-paris-diderot.fr (unknown [78.194.40.74]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id E93E361FA6; Wed, 30 Sep 2015 13:26:02 +0200 (CEST)
Date: Wed, 30 Sep 2015 13:26:04 +0200
Message-ID: <87wpv8tagj.wl-jch@pps.univ-paris-diderot.fr>
From: Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr>
To: Gabriel Kerneis <kerneis@google.com>
In-Reply-To: <CAL0WyWxAbki-zyK=gBCsZQNTYBGyXNU2XyYEtuYPaPySwO85EQ@mail.gmail.com>
References: <55FA3EF5.6000704@opensourcerouting.org> <87mvwjprwl.wl-jch@pps.univ-paris-diderot.fr> <CAGnRvure=W90ZYpaVSJBLoTzq=6ypE3ef-XEmHSzLPZdV+BT-Q@mail.gmail.com> <87io6t5doi.wl-jch@pps.univ-paris-diderot.fr> <alpine.DEB.2.02.1509301026250.8750@uplift.swm.pp.se> <87k2r8uuz4.wl-jch@pps.univ-paris-diderot.fr> <alpine.DEB.2.02.1509301208141.8750@uplift.swm.pp.se> <877fn8ur89.wl-jch@pps.univ-paris-diderot.fr> <alpine.DEB.2.02.1509301247110.8750@uplift.swm.pp.se> <87zj04tb1a.wl-jch@pps.univ-paris-diderot.fr> <CAL0WyWxAbki-zyK=gBCsZQNTYBGyXNU2XyYEtuYPaPySwO85EQ@mail.gmail.com>
User-Agent: Wanderlust/2.15.9
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 [IPv6:2001:660:3301:8000::1:2]); Wed, 30 Sep 2015 13:26:05 +0200 (CEST)
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (potemkin.univ-paris7.fr [194.254.61.141]); Wed, 30 Sep 2015 13:26:04 +0200 (CEST)
X-Miltered: at korolev with ID 560BC6CD.000 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)!
X-Miltered: at potemkin with ID 560BC6CC.001 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)!
X-j-chkmail-Enveloppe: 560BC6CD.000 from potemkin.univ-paris7.fr/potemkin.univ-paris7.fr/null/potemkin.univ-paris7.fr/<jch@pps.univ-paris-diderot.fr>
X-j-chkmail-Enveloppe: 560BC6CC.001 from mailhub.math.univ-paris-diderot.fr/mailhub.math.univ-paris-diderot.fr/null/mailhub.math.univ-paris-diderot.fr/<jch@pps.univ-paris-diderot.fr>
X-j-chkmail-Score: MSGID : 560BC6CD.000 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000
X-j-chkmail-Score: MSGID : 560BC6CC.001 on potemkin.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000
X-j-chkmail-Status: Ham
X-j-chkmail-Status: Ham
Archived-At: <http://mailarchive.ietf.org/arch/msg/homenet/tc7YbfmxtfMlKewwXhBhy8wZTBY>
Cc: "homenet@ietf.org Group" <homenet@ietf.org>, Mikael Abrahamsson <swmike@swm.pp.se>
Subject: Re: [homenet] Dynamic metrics in IS-IS
X-BeenThere: homenet@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: IETF Homenet WG mailing list <homenet.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/homenet>, <mailto:homenet-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/homenet/>
List-Post: <mailto:homenet@ietf.org>
List-Help: <mailto:homenet-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/homenet>, <mailto:homenet-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 30 Sep 2015 11:26:08 -0000

>>> a valid test of the metric setting features would be to have two wifi
>>> networks, one 2.4GHz, one 5Ghz, two different L2s, different IP
>>> networks, and then walk around with two clients connected together with
>>> a network cable, and check if the routing would change from the 5GHz
>>> network to the 2.4GHz network as distance from the AP increases and the
>>> 5GHz network stops working.

>> That would be an interesting test if you can show that Christian's code
>> works better in this case than plain IS-IS and not much worse than
>> a recent babeld.

> That would be an interesting test regardless of the outcome. Please, do
> share negative results too:
> https://www.elsevier.com/authors-update/story/innovation-in-publishing/why-science-needs-to-publish-negative-results

Yes, I expressed myself badly.  What I meant is that the test is certainly
interesting, assuming that you do compare against both classical IS-IS and
a well-established protocol with variable metrics, such as Babel or
Henning's variant of OLSRv2.

-- Juliusz