Re: [multipathtcp] draft-boucadair-mptcp-plain-mode-07
<mohamed.boucadair@orange.com> Fri, 03 June 2016 05:29 UTC
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From: mohamed.boucadair@orange.com
To: "sarikaya@ieee.org" <sarikaya@ieee.org>, "multipathtcp@ietf.org" <multipathtcp@ietf.org>
Thread-Topic: [multipathtcp] draft-boucadair-mptcp-plain-mode-07
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Date: Fri, 03 Jun 2016 05:29:17 +0000
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Subject: Re: [multipathtcp] draft-boucadair-mptcp-plain-mode-07
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Hi Behcet, Please see inline. Cheers, Med > -----Message d'origine----- > De : multipathtcp [mailto:multipathtcp-bounces@ietf.org] De la part de > Behcet Sarikaya > Envoyé : mercredi 1 juin 2016 20:38 > À : multipathtcp@ietf.org > Objet : [multipathtcp] draft-boucadair-mptcp-plain-mode-07 > > Hi all, > > Recent mails in this thread came to my attention because I work on the > hybrid access network issues and wish to convey my views on some of > the issues discussed. > > First of all, the claims that there is strong operator interest on > this is over blown. Hybrid access is based on offloading some CPE > traffic to 3G/LTE network, I don't think mobile operators are fond of > such a thing. > [Med] I confirm there is interest from operators. You can check, for example, http://www.netmanias.com/en/?m=view&id=reports&no=8532. > Also I strongly concur with Yoshi's point of CPE to convert UDP or TCP > into MPTCP and requires > Concentrators to convert back MPTCP into UDP or TCP is a complex > process. [Med] FWIW, UDP/TCP conversion is not new. You can play with a Linux tool like http://linux.die.net/man/1/socat. Also, it is a feature implemented by SBCs (e.g., http://www.sip-dojo.com/why-brekeke-sip-server/tcp-udp-conversion). The crux of this is the problems arising from the use of > MPTCP for tunneling, which is what this draft is advocating. > > Here I recommend Joe Touch's Intarea draft > https://tools.ietf.org/id/draft-ietf-intarea-tunnels-02.txt > on IP Tunnels in the Internet Architecture. IETF developed many > tunneling protocols which are surveyed in this draft but none of them > are TCP/MPTCP based. [Med] One of the currently deployed MPTCP schemes relies on SOCKS, which does not require any tunneling at all! The Plain Mode solves many of the issues raised by SOCKS. > I also question suitability of this work to the charter. There is this > charter text: > Finally, the working group will explore whether an MPTCP-aware > middlebox would be useful, where at least one end host is MPTCP-enabled. > For example, potentially helping MPTCP's incremental deployment by > allowing only one end host to be MPTCP-enabled and the middlebox acts as > an MPTCP proxy for the other end host, which runs TCP; and potentially > helping some mobility scenarios, where the middlebox acts as an anchor > between two MPTCP-enabled hosts. The working group will detail what real > problems an MPTCP-enabled middlebox might solve, how it would impact the > Multipath TCP architecture (RFC6182), what proxy approach might be > justified as compared against alternative solutions to the problems, and > the likely feasibility of solving the technical and security issues. > > This draft has a middlebox called Concentrator but it is not trying to > enable MPTCP hosts to communicate with TCP hosts, [Med] Hmm, the draft also covers MPTCP-enabled hosts, e.g.,: o An MPTCP-enabled, multi-interfaced CPE or host that is directly ^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^ connected to one or multiple access networks is allocated ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ addresses/prefixes via legacy mechanisms (e.g., DHCP) supported by the various available network attachments. or This document focuses on the CPE-based model (i.e., the CPE embeds a MPTCP proxy that behaves on behalf of terminal devices), but plain transport mode can also apply to host-based models. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Both CPE and host-based models are in scope.
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Joe Touch
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Jordan Melzer
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Joe Touch
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Olivier Bonaventure
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Mingui Zhang
- [multipathtcp] draft-boucadair-mptcp-plain-mode-07 mohamed.boucadair
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Yoshifumi Nishida
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Olivier Bonaventure
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Rao Shoaib
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Olivier Bonaventure
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Yoshifumi Nishida
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Olivier Bonaventure
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Yoshifumi Nishida
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Olivier Bonaventure
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… pierrick.seite
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Yoshifumi Nishida
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Rao Shoaib
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… mohamed.boucadair
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… mohamed.boucadair
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… mohamed.boucadair
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Rao Shoaib
- [multipathtcp] draft-boucadair-mptcp-plain-mode-07 Behcet Sarikaya
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Markus.Brunner3
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Joe Touch
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Henderickx, Wim (Nokia - BE)
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Yoshifumi Nishida
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Yoshifumi Nishida
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Joe Touch
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… mohamed.boucadair
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… mohamed.boucadair
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… mohamed.boucadair
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Markus.Brunner3
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… mohamed.boucadair
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Rao Shoaib
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Rao Shoaib
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… mohamed.boucadair
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Henderickx, Wim (Nokia - BE)
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Joe Touch
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Behcet Sarikaya
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… David Allan I
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Joe Touch
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… David Allan I
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Joe Touch
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… David Allan I
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Joe Touch
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… David Allan I
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Jordan Melzer
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Henderickx, Wim (Nokia - BE)
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… Joe Touch
- Re: [multipathtcp] draft-boucadair-mptcp-plain-mo… philip.eardley