Re: [multipathtcp] charter discussion

Behcet Sarikaya <sarikaya2012@gmail.com> Thu, 06 April 2017 20:48 UTC

Return-Path: <sarikaya2012@gmail.com>
X-Original-To: multipathtcp@ietfa.amsl.com
Delivered-To: multipathtcp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 73CB7129634 for <multipathtcp@ietfa.amsl.com>; Thu, 6 Apr 2017 13:48:07 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.748
X-Spam-Level:
X-Spam-Status: No, score=-1.748 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=no autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
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 OdV06jh1e4mi for <multipathtcp@ietfa.amsl.com>; Thu, 6 Apr 2017 13:48:05 -0700 (PDT)
Received: from mail-wr0-x230.google.com (mail-wr0-x230.google.com [IPv6:2a00:1450:400c:c0c::230]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6F1201294A4 for <multipathtcp@ietf.org>; Thu, 6 Apr 2017 13:48:05 -0700 (PDT)
Received: by mail-wr0-x230.google.com with SMTP id c55so6647177wrc.3 for <multipathtcp@ietf.org>; Thu, 06 Apr 2017 13:48:05 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:reply-to:in-reply-to:references:from:date:message-id :subject:to:cc; bh=y8aUEhLTQ3cnBzRPW2l+c8FCs/qd5jJH2ffT3EUU8YQ=; b=ZotIW9XYQpCNUQqgEZDjdTjfs59R6mqbMWe/3zzeyvNB3+IAoL3Kr3oZ0Xsc1jxRuB UYZ5ULU4XF5XmOJHavE1FchxTi7XaralXIrIz55q2IhmwRWrXCBp6mQA/xbmbLtLUIwk 0s7nc+pgme/ivw5jJaoyU/PlZ3AShYxvLa+QE7xxF6QegUmpXsOlnAvFJ5ivTJfIGoyn gx98BGYvNe71ar6P54hwoxMZFDZ83W7VRyySFy19X99H1qf0wjyRfnU0yM1nhQnjBGhZ 8fUZPe5GlU9feBmv/ku8r9Lf1KxeTOf5ZHmveWouvSOpLajP1k89PLdqyF4ubPw9LIRY Zf1Q==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:reply-to:in-reply-to:references :from:date:message-id:subject:to:cc; bh=y8aUEhLTQ3cnBzRPW2l+c8FCs/qd5jJH2ffT3EUU8YQ=; b=GW1CuzKakR7NtkZY/zeJ2Sa4VGAgbzs8BoWqfe9pPV35VFXpilI8/S3gB/3ppa4Z+s bYz/Xqksre0TvNc/7/TVXiMkjaFDDhxUsZPiwLHEZfYD1xYZBLXMUIrv0G7fnHJ9LYSE bF5p7FLYWJkmRXOzUzp9kP2SXCgYTP/wdBuY9if3OvW6nGyezTVDrz27CL4+Fr85E084 tl5xvWMRD/MI8hsClTO1pbx2JB1tc0nBUX8gcEVNQuLIyJ22KbBuuygSkK8CjCVxysWK tGMqqmmD0NrEg3a/kzmwcSVZgwHjPTKx2dpY6jUyWNpL+eiwl5mLs6oOKdvD19kUN6ZH dhFg==
X-Gm-Message-State: AFeK/H1jCJdZrcNnCS7qw7i7bNL/lb7StSFY46jtRmrJTVT/tsJs4s7ZLZtwWDK4y2ZhgraNkezj0Mt/PPALuQ==
X-Received: by 10.223.162.198 with SMTP id t6mr33858917wra.155.1491511684009; Thu, 06 Apr 2017 13:48:04 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.223.169.228 with HTTP; Thu, 6 Apr 2017 13:48:03 -0700 (PDT)
Reply-To: sarikaya@ieee.org
In-Reply-To: <814660b2aedf47efb66f671ef668f3e9@rew09926dag03b.domain1.systemhost.net>
References: <CAC8QAcewg+z+xcJ80yrPPt7KPuvMye-aNzOuHKCjsJspocQKYA@mail.gmail.com> <814660b2aedf47efb66f671ef668f3e9@rew09926dag03b.domain1.systemhost.net>
From: Behcet Sarikaya <sarikaya2012@gmail.com>
Date: Thu, 6 Apr 2017 15:48:03 -0500
Message-ID: <CAC8QAcdfMCt+W3UhHrcnivEzr4kX_GCQ=4B4Mr6RsG7=cdS8sA@mail.gmail.com>
To: philip.eardley@bt.com
Cc: multipathtcp@ietf.org, Joe Touch <touch@isi.edu>
Content-Type: multipart/alternative; boundary=f403045e9cf61a9335054c85a050
Archived-At: <https://mailarchive.ietf.org/arch/msg/multipathtcp/KYU9SE4Xs23cc5WHM9zELzt4dUc>
Subject: Re: [multipathtcp] charter discussion
X-BeenThere: multipathtcp@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: Multi-path extensions for TCP <multipathtcp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/multipathtcp>, <mailto:multipathtcp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/multipathtcp/>
List-Post: <mailto:multipathtcp@ietf.org>
List-Help: <mailto:multipathtcp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/multipathtcp>, <mailto:multipathtcp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 06 Apr 2017 20:48:08 -0000

Phil,


On Thu, Apr 6, 2017 at 4:06 AM, <philip.eardley@bt.com> wrote:

> Behcet,
>
>
>
> The slide was intended to be just a very high-level sketch. In both #1 and
> #2, the objective of the signalling is to get an endpoint’s IP address info
> into the ‘other’ proxy, so the proxy can do address mapping (translation)
> on subsequent packets (including the ACK) so that packets can travel
> between the endpoints. In both #1 and #2, the idea is that this signalling
> is done along with the TCP SYN, so that the connection via the proxies is
> set up with no delay (“0 RTT”)
>

You did not answer the issues I raised below with each option, plus you
raised another one, how does it work in 0 RTT, e.g. in Option #1 or #2?

Regards,

Behcet

>
>
> Best wishes,
>
> phil
>
>
>
> *From:* Behcet Sarikaya [mailto:sarikaya2012@gmail.com]
> *Sent:* 31 March 2017 16:53
> *Cc:* Eardley,PL,Philip,TUB8 R <philip.eardley@bt.com>om>;
> multipathtcp@ietf.org; Joe Touch <touch@isi.edu>
> *Subject:* charter discussion
>
>
>
> Hi all,
>
>
>
> Regarding the charter discussions that happened at the mptcp session on
> Thursday March 30, I asked a question but I could not understand the
> answer, let me ask it again.
>
>
>
> In chairs slides page 12, TCP SYN shown in Option 1 and Option 2 actually
> were different although the slides seems to show that they are the same.
>
>
>
> In Option 1, if the proxy sends TCP SYN than is it OK in a conversation
> the destination does not know who the source is?
>
>
>
> In Option 2, if TCP SYN sent was the original TCP SYN from the source then
>
>
>
> how come the TCP-ACK goes through the proxy?
>
> A node sending a packet without its address as source address means it is
> router, right?
>
>
>
> Regards,
>
>
>
> Behcet
>
>
>
>
>
>
>
>
>
>
>