- Thursday, March 30, 2017

mptcp@jabber.ietf.org

Thursday, March 30, 2017< ^ >

Joseph has set the subject to: Agenda at https://tools.ietf.org/wg/mptcp/agenda?item=agenda-95-mptcp.html

Room Configuration

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[18:17:46] wcloetens joins the room
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[20:20:43] Joseph has set the subject to: Materials at https://datatracker.ietf.org/meeting/98/session/mptcp
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[20:28:45] <Olivier Bonaventure> I suggest to wait for answer from security people
[20:34:07] <Olivier Bonaventure> Application Layer Authentication: I would suggest to discuss that with TLS 1.3 now that it has progressed enough
[20:35:23] <Yoshi Nishida> olivier, you can comment with your voice if you want
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[20:35:42] <Yoshi Nishida> as you're using meetecho
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[20:46:37] <jch> The suspense is unbearable!
[20:47:13] <jch> That's probably due to an attacker on one of the subflows.
[20:47:14] <Yoshi Nishida> olivier you are here?
[20:47:18] <wcloetens> Apparently meetecho doesn't support MPTCP, or Olivier's connection would have fallen back to the second path
[20:47:39] <Meetecho> I think he was just kicked from the virtual queue ;)
[20:47:45] <Meetecho> he never left!
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[20:55:02] <Costin Raiciu> hey - i have one question too
[20:55:04] <Meetecho> note to chairs: Costin Raiciu in virtual queue
[20:55:04] <Costin Raiciu> :)
[20:55:38] <Yoshi Nishida_8907> ok. how I can hand control to him?
[20:56:09] <Yoshi Nishida_8907> costin, you want to make comments? or preparing presentation?
[20:56:30] <Meetecho> Yoshi Nishida: hitting the big red button will unmute Costin
[20:57:09] <Yoshi Nishida_8907> and it's go back to olivier after that?
[20:57:42] <Meetecho> Olivier is always on, as he's speaker
[20:57:57] <Yoshi Nishida_8907> ok
[20:57:59] <Meetecho> so he won't be kicked out
[20:58:20] <Yoshi Nishida_8907> ok. Tha't's what I was afraid
[20:58:51] <Meetecho> no worries, Olivier is still there :)
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[21:53:40] <Olivier Bonaventure> The problem with the proposed solution is that the server needs to match the Key in each received SYN to match the two subflows together.
[21:53:59] <Olivier Bonaventure> I don't think that this can scale on busy servers.
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[22:05:40] <wcloetens> No, it should not.
[22:06:43] <wcloetens> There are scenarios in which the LTE modem is a separate box, connected through a network link to the broadband modem
[22:07:23] <wcloetens> (We are actively deploying in this mode).
[22:08:01] <wcloetens> But it has no major impact on the concept. The proxy is located in one of the boxes in the home. The other is just a device in the route.
[22:08:02] <Olivier Bonaventure> We should do the discussion assuming a single box, otherwise we'll never converge.
[22:08:14] <wcloetens> Agreed. It's not a problem.
[22:10:03] <Olivier Bonaventure> Lars, TV is multicast
[22:10:14] <Olivier Bonaventure> that's why it goes only over dsl
[22:10:30] <wcloetens> Not necessarily. A typical deployment scenario is where you have a low bandwidth upstream link (e.g. ADSL with 600Kbit/s) but a decent downstream link, combined with an LTE link that has as much bandwidth in upstream as in downstream.
[22:10:57] <wcloetens> TV could be unicast, e.g. VoD. But real-time TV is indeed multicast, and that only goes over DSL (today)
[22:15:07] <wcloetens> Could anyone point the camera at the room?
[22:15:31] <jch> Can anyone remind me what is typical LTE throughput?
[22:16:05] <wcloetens> Policy control can just mean: some flows must _not_ be sent through the mptcp proxy
[22:16:12] <wcloetens> Such as VoIP
[22:16:24] <wcloetens> (bad example; that would be UDP)
[22:17:32] <wcloetens> jch: depends on your subscription more than anything else. We can do 150Mbit/s in the lab. Realistically, a couple of tens per second.
[22:17:52] <jch> ty
[22:18:49] <wcloetens> Short setup time is essential to reduce load time of a web page with many elements, sequential HTTP requests
[22:18:54] <Yoshi Nishida_8907> olivier you are still speaking
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[22:52:43] <wcloetens> We are deploying #2, and I agree with Wim and Mohamed. It was just a way to launch quickly, in the absence of an alternative. High RTT in session establishment and lack of IPv6 support is the problem.
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[22:57:17] <wcloetens> Multipath Conversion Point (MCP): a function that terminates a transport flow and relays all data carried in the flow into another transport flow.
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[22:57:28] <wcloetens> So, yes, Margaret, it is terminated
[22:57:57] <wcloetens> Correct, Phil
[22:58:38] <Olivier Bonaventure> We have deployed 3 and have also implemented 1, but operators we discussed with preferred 3.
[22:59:47] <Olivier Bonaventure> @Christoph There is interest for MPTCP. Let's start with that and then extend the use case to non-MPTCP deployments.
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[23:14:37] <Yoshi Nishida> oliveir you can use meetecho if you want
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[23:32:48] <Olivier Bonaventure> option 3 could use an experimental TCP option in the SYN and that's all.
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[23:35:05] <Olivier Bonaventure> @Christoph, MPTCP on the proxies would fallback as well
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[23:36:50] <wcloetens> hum
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[23:38:22] <wcloetens> we can't hear her
[23:38:24] <Olivier Bonaventure> don't hear anything
[23:38:48] <Yoshi Nishida> speaker is not working?
[23:39:07] <jch> She's asking if it makes sense to vote 1-3 given that we haven't decided if we do the work at all.
[23:39:09] <Olivier Bonaventure> phil is okay, but not the comments in the room by mirja or someone else
[23:39:56] <Simon Romano> Speakers should speak into the mics…
[23:41:00] <Ronald in 't Velt_2847> thank you, Juliusz!
[23:41:17] <wcloetens> hum; it should do work
[23:41:17] <Olivier Bonaventure> humm for doing work
[23:41:51] <wcloetens> hum, it should do #1
[23:42:18] <wcloetens> hum, it should not do #2
[23:42:29] <Olivier Bonaventure> hum 1 and 3
[23:42:35] <wcloetens> hum, work on #3
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