Re: [multipathtcp] q about off-path proxy (explicit mode)
Yoshifumi Nishida <nishida@sfc.wide.ad.jp> Tue, 28 March 2017 23:00 UTC
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From: Yoshifumi Nishida <nishida@sfc.wide.ad.jp>
Date: Tue, 28 Mar 2017 15:59:52 -0700
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To: mohamed.boucadair@orange.com
Cc: Yoshifumi Nishida <nishida@sfc.wide.ad.jp>, multipathtcp <multipathtcp@ietf.org>
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Subject: Re: [multipathtcp] q about off-path proxy (explicit mode)
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Hi Med, On Tue, Mar 28, 2017 at 5:20 AM, <mohamed.boucadair@orange.com> wrote: > Hi Yoshi, > > > > Please see inline. > > > > Cheers, > > Med > > > > *De :* Yoshifumi Nishida [mailto:nishida@sfc.wide.ad.jp] > *Envoyé :* lundi 27 mars 2017 16:18 > *À :* BOUCADAIR Mohamed IMT/OLN > *Cc :* Yoshifumi Nishida; multipathtcp > *Objet :* Re: [multipathtcp] q about off-path proxy (explicit mode) > > > > Hi Med, > > > > On Mon, Mar 27, 2017 at 12:32 PM, <mohamed.boucadair@orange.com> wrote: > > Re-, > > > > Please see inline. > > > > Cheers, > > Med > > > > *De :* Yoshifumi Nishida [mailto:nishida@sfc.wide.ad.jp] > *Envoyé :* lundi 27 mars 2017 13:21 > *À :* BOUCADAIR Mohamed IMT/OLN > *Cc :* Yoshifumi Nishida; multipathtcp > *Objet :* Re: [multipathtcp] q about off-path proxy (explicit mode) > > > > Hi Olivier, Med, > > > > Thanks for the response. I have been thinking that it would be better if > we can classify our use cases so that we can have clear vision for what to > solve. Things I may want to classify is: > > a) solutions requires changes in only MPTCP or in TCP general > > b) solutions requires proxies to be on-path or solutions that work with > off-path proxy. > > > > We can think about the solutions for a) if we think it's necessary, but I > am thinking that the proper venue for the discussion might not be this WG. > > > > I think the approach Med mentioned requires the proxy to be on-path, so I > would like to classify it as an on-path solution. > > [Med] I’m not sure to follow you here. What I described is aligned with > the target dual proxy case (https://tools.ietf.org/html/ > draft-nam-mptcp-deployment-considerations-01#section-4.2): the first > proxy is embedded on a CPE. There is no technical problem there to > intercept the traffic to be proxyied given that the CPE sees all the > traffic. > > > > Well, this classification might be a bit different from the way described > in the draft. > > What I meant for off-path (explicit) case is the cases where the proxy is > not on the path between client and server. No more and no less. > > [Med] I see. As you can read in the plain mode draft, implicit/explicit > thing is drawn from the perspective of the MCP located at the network > provider side. > I think I understand the perspective. I am thinking that if we don't combine explicit mode and off-path, it will be less confusing (at least to me) In my understanding, explicit mode can be used for off-path (probably for single proxy case) and on-path (probably for 2 proxy case) Implicit mode probably will be used for on-path case only. -- Yoshi
- [multipathtcp] q about off-path proxy (explicit m… Yoshifumi Nishida
- Re: [multipathtcp] q about off-path proxy (explic… Olivier Bonaventure
- Re: [multipathtcp] q about off-path proxy (explic… mohamed.boucadair
- Re: [multipathtcp] q about off-path proxy (explic… Yoshifumi Nishida
- Re: [multipathtcp] q about off-path proxy (explic… mohamed.boucadair
- Re: [multipathtcp] q about off-path proxy (explic… Yoshifumi Nishida
- Re: [multipathtcp] q about off-path proxy (explic… Olivier Bonaventure
- Re: [multipathtcp] q about off-path proxy (explic… mohamed.boucadair
- Re: [multipathtcp] q about off-path proxy (explic… Yoshifumi Nishida
- Re: [multipathtcp] q about off-path proxy (explic… philip.eardley