IETF Logo Mail Archive

Re: MLD snooping of solicted-node multicast (Was: Re: New Version Notification for draft-halpern-6man-nd-pre-resolve-addr-00.txt

Lorenzo Colitti <lorenzo@google.com> Fri, 17 January 2014 09:49 UTC

Return-Path: <lorenzo@google.com>
X-Original-To: ipv6@ietfa.amsl.com
Delivered-To: ipv6@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 27F7B1ADFBA for <ipv6@ietfa.amsl.com>; Fri, 17 Jan 2014 01:49:14 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.916
X-Spam-Level:
X-Spam-Status: No, score=-1.916 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FM_FORGED_GMAIL=0.622, HTML_MESSAGE=0.001, RP_MATCHES_RCVD=-0.538, SPF_PASS=-0.001] autolearn=ham
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 4Gz4x_s7I4L8 for <ipv6@ietfa.amsl.com>; Fri, 17 Jan 2014 01:49:12 -0800 (PST)
Received: from mail-ie0-x22d.google.com (mail-ie0-x22d.google.com [IPv6:2607:f8b0:4001:c03::22d]) by ietfa.amsl.com (Postfix) with ESMTP id B69301ADFB6 for <ipv6@ietf.org>; Fri, 17 Jan 2014 01:49:12 -0800 (PST)
Received: by mail-ie0-f173.google.com with SMTP id e14so5030538iej.4 for <ipv6@ietf.org>; Fri, 17 Jan 2014 01:49:00 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=XGC+jUkat1AKeLkVeo7eILbAho5z8COTN72s7RnhHTk=; b=iXt4FTCZBsj486RhUFgVJBodkDpEvqb/8fqpDrV767H6UfaFOi2M4Ab+xPvckyhpt6 ApQhdS8LDtWR8Or7vFRxqCxghfADekYuaZ4TTn4+/XYax3ENr64Q4Dv5zDzsXST/doWx HNqW19QqXyrU8aAw6VG0LD18W6GJLFslmL4SfXjouC7oG4BuNJlj9/rO17QczP3g0vXF S8ceJO1RiiQCU08gwITgP7lTrxH2ONJ0K1BrnSqSmCAv22neAenanRC12j8D6C3Ob+Vq oJgrDyDypUZu0Akl77cKGit2euyDey4Dr+EfacAv8vLCdjWkxmmFyeb/+tGf40p0HfIU wC1A==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc:content-type; bh=XGC+jUkat1AKeLkVeo7eILbAho5z8COTN72s7RnhHTk=; b=Z8moLKpas4doAwR9ahHcIzVWVIyWqSc4TRTDm2yURdo8x+VmbuxaSYhDHbVBlB/OBs 0WZjHEZvVZmBWCHbBWxqBYLM3Qb/ZPKvF0mSuvEph8ygjayRBUrmN6dtH2cEMDOXklAY AjUrusEHiK5WSvGxuq1wkASy9hRxh7L8/PYUXj+ZmbxIUjXjZEDf9SNbk/jlRE5STBLy 31F3JZoZ9kgXt32+9vnaTk1yQaXBpMHqmQZOODZvn0ZsDWnBEyzLejCOcObcantAqBuj OPxdhvJGIe4Yd5OA4oQfl3FpPOgDpmxs4FGM+0dIjk2rzIf2+zcDZaOWwTdu5g1rMp3y ud9g==
X-Gm-Message-State: ALoCoQnSSJ9hnruTRInhUgR/KeAnLTGsNyBUq2Y7G0S1chgyYjP/NBVpeS/QGDAsT4VzUj7NkEt2d5UVTrcEHQkK5jqFWm5NrVO2lJ7p0NBAduf6/VR7wiTB7e2UC6g7l2JRULykdnk/Zb8kra3wqvnH0sdFQP0pishjOnHzuJBEuEoV3zM0IzDxCReOLwWYEVGJKssar4hj
X-Received: by 10.50.79.228 with SMTP id m4mr1658616igx.47.1389952140077; Fri, 17 Jan 2014 01:49:00 -0800 (PST)
MIME-Version: 1.0
Received: by 10.64.7.36 with HTTP; Fri, 17 Jan 2014 01:48:39 -0800 (PST)
In-Reply-To: <892FB91E-311D-4A50-A38B-4972F70847AB@employees.org>
References: <20140111004402.10451.90724.idtracker@ietfa.amsl.com> <BF6E0BD839774345977891C597F8B50C5CE74C@eusaamb109.ericsson.se> <72381AF1F18BAE4F890A0813768D992817FCA84E@sdcexchms.au.logicalis.com> <892FB91E-311D-4A50-A38B-4972F70847AB@employees.org>
From: Lorenzo Colitti <lorenzo@google.com>
Date: Fri, 17 Jan 2014 01:48:39 -0800
Message-ID: <CAKD1Yr2CLUmTYTNAj2_bkP=f3xeBCZ2g=9Sr0D-GvtRgxmfC3g@mail.gmail.com>
Subject: Re: MLD snooping of solicted-node multicast (Was: Re: New Version Notification for draft-halpern-6man-nd-pre-resolve-addr-00.txt
To: Ole Troan <otroan@employees.org>
Content-Type: multipart/alternative; boundary="089e013a1f16908dc504f027738c"
Cc: Ing-Wher Chen <ing-wher.chen@ericsson.com>, 6man WG <ipv6@ietf.org>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ipv6>, <mailto:ipv6-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/ipv6/>
List-Post: <mailto:ipv6@ietf.org>
List-Help: <mailto:ipv6-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 17 Jan 2014 09:49:14 -0000

On Fri, Jan 17, 2014 at 1:43 AM, Ole Troan <otroan@employees.org> wrote:

> I hear that MLD snooping for the solicited-node multicast groups isn't
> supported in most (if not all) switches.
> partly because MLD snooping doesn't work well, but also because it becomes
> very costly to support state for this many multicast groups.
>

On wifi networks, I don't see why that would be. There are basically two
solicited-node groups per host, and wifi access points already track lots
of state on a per-MAC address basis.

v2.46.0 | Report a Bug | By Email | System Status