IETF Logo Mail Archive

Re: [v6ops] unicast RA to save battery: link-layer joining multicast groups

Alexandru Petrescu <alexandru.petrescu@gmail.com> Wed, 22 July 2015 12:06 UTC

Return-Path: <alexandru.petrescu@gmail.com>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1C72B1A00DD for <v6ops@ietfa.amsl.com>; Wed, 22 Jul 2015 05:06:46 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.683
X-Spam-Level:
X-Spam-Status: No, score=-4.683 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, HELO_EQ_FR=0.35, MIME_8BIT_HEADER=0.3, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_HI=-5, SPF_SOFTFAIL=0.665] 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 2YuCvGgpeCms for <v6ops@ietfa.amsl.com>; Wed, 22 Jul 2015 05:06:44 -0700 (PDT)
Received: from cirse-out.extra.cea.fr (cirse-out.extra.cea.fr [132.167.192.142]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5B48C1A0099 for <v6ops@ietf.org>; Wed, 22 Jul 2015 05:06:44 -0700 (PDT)
Received: from pisaure.intra.cea.fr (pisaure.intra.cea.fr [132.166.88.21]) by cirse.extra.cea.fr (8.14.2/8.14.2/CEAnet-Internet-out-2.3) with ESMTP id t6MC6guS020775; Wed, 22 Jul 2015 14:06:42 +0200
Received: from pisaure.intra.cea.fr (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 2C08C20281E; Wed, 22 Jul 2015 14:10:17 +0200 (CEST)
Received: from muguet1.intra.cea.fr (muguet1.intra.cea.fr [132.166.192.6]) by pisaure.intra.cea.fr (Postfix) with ESMTP id 153CB2027AA; Wed, 22 Jul 2015 14:10:17 +0200 (CEST)
Received: from [127.0.0.1] ([132.166.84.215]) by muguet1.intra.cea.fr (8.13.8/8.13.8/CEAnet-Intranet-out-1.2) with ESMTP id t6MC6dRP018145; Wed, 22 Jul 2015 14:06:41 +0200
To: Andrew 👽 Yourtchenko <ayourtch@gmail.com>
References: <55AE44AA.7070304@gmail.com> <CAPi140MZrP7sZhLdZPVqTS0h157kmPUsUW-X5wDEoFbV2E8H7Q@mail.gmail.com>
From: Alexandru Petrescu <alexandru.petrescu@gmail.com>
Message-ID: <55AF874F.5000807@gmail.com>
Date: Wed, 22 Jul 2015 14:06:39 +0200
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0
MIME-Version: 1.0
In-Reply-To: <CAPi140MZrP7sZhLdZPVqTS0h157kmPUsUW-X5wDEoFbV2E8H7Q@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"; format="flowed"
Content-Transfer-Encoding: 8bit
Archived-At: <http://mailarchive.ietf.org/arch/msg/v6ops/gB8weZCXyFtaNVndNxXwyymd0RU>
Cc: "v6ops@ietf.org" <v6ops@ietf.org>
Subject: Re: [v6ops] unicast RA to save battery: link-layer joining multicast groups
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: v6ops discussion list <v6ops.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/v6ops>, <mailto:v6ops-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/v6ops/>
List-Post: <mailto:v6ops@ietf.org>
List-Help: <mailto:v6ops-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/v6ops>, <mailto:v6ops-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 22 Jul 2015 12:06:46 -0000

Thanks for the pointer, but that's a long discussion, it's hard to draw 
quickly a conclusion on it.

I would think to argue that if Android has a problem in this then it's 
an Android problem.

If it's a particular driver problem (dependent on the card of that 
samsung phone) then fix that problem.

Maybe it's not so.

But I am sure the linux devices I use dont consume more power when 
receiving more RAs, on wifi.

And even if they did, I have enough batteries and enough other sources 
of energy to provide them in order to be able to make handovers fast 
enough to not loose 1 single packet.

Not sure whether the goal here is to save energy?

Alex

Le 22/07/2015 10:34, Andrew 👽  Yourtchenko a écrit :
> This is what some phones do today and is exactly the problem we are
> trying to solve.
>
> https://code.google.com/p/android/issues/detail?id=32662
>
> --a
>
> On 7/21/15, Alexandru Petrescu <alexandru.petrescu@gmail.com> wrote:
>> On another hand,
>>
>> IEEE 802.11bgn multicast groups (33::1 etc) are 'joined' at MAC layer by
>> setting filters.  (maybe even by MAC messaging for joining MAC multicast
>> groups).
>>
>> Maybe we can request the Hosts to set local filters to not receive
>> multicast RAs.  Or request the Hosts short on energy to express interest
>> in these IPv6 multicast groups.
>>
>> Alex
>>
>> _______________________________________________
>> v6ops mailing list
>> v6ops@ietf.org
>> https://www.ietf.org/mailman/listinfo/v6ops
>>
>

v2.23.0 | Report a Bug | By Email