Re: [tsvwg] WG adoption call for draft-amend-tsvwg-multipath-dccp, to end: 19th August 2021

[[e-mail]]

Hi Mirja, all,
Thanks for the comments!
Although it’s true that MP-DCCP was not as much discussed before at 3GPP compared to MPQUIC, DCCP itself was already proposed for non-TCP traffic in ATSSS in Rel.16 back in 2018 (see https://www.3gpp.org/ftp//Specs/archive/23_series/23.793/23793-g00.zip<https://www.3gpp.org/ftp/Specs/archive/23_series/23.793/23793-g00.zip>). The decision to first develop the MP-extension in IETF seemed reasonable, since 3GPP is generally reluctant to have individual drafts referenced in its specs in normative phase.
Additional support for MP-DCCP is provided by, e.g., GSMA (https://datatracker.ietf.org/liaison/1741/) reflecting mainly operators’ perspective in need for a solution to efficiently handle non-TCP traffic (including QUIC) without running into problems with e.g., encryption potentially affecting the required MP-proxy functionality (see e.g., D4.3_V1.1.pdf (sat5g-project.eu)<https://www.sat5g-project.eu/wp-content/uploads/2020/06/D4.3_V1.1.pdf>). Also MP-DCCP is a quite simple straight-forward on-purpose protocol, dedicated for multi-connectivity architectures thus promising rapid development and subsequent operational benefits (see, e.g., slides-104-tsvwg-sessb-43-markus-amend-multipath-dccp-00 (ietf.org)<https://datatracker.ietf.org/meeting/104/materials/slides-104-tsvwg-sessb-43-markus-amend-multipath-dccp-00>)
Thanks!
Best Regards
Dirk
From: tsvwg <[e-mail]> On Behalf Of Mirja Kuehlewind
Sent: Montag, 16. August 2021 14:25
To: Smith, Kevin, Vodafone <Kevin.Smith=[e-mail]>; Giorgi Gulbani <[e-mail]>; [e-mail]; [e-mail]
Cc: [e-mail]
Subject: Re: [tsvwg] WG adoption call for draft-amend-tsvwg-multipath-dccp, to end: 19th August 2021

Hi all,

given ATSSS is mention again, I would like to comment (knowing that discussion should and will in future rather take place in 3GPP). In rel-17 there was agreement to work on a QUIC-based solution for ATSSS, however, given work on MP-QUIC is still pending in the IETF, ATSSS support for non-TCP was postponed to rel-18 where discussion now is re-started what to study. So far there was large support in 3GPP for a QUIC-based solution for non-TCP traffic in ATSSS and no discussion about MP-DCCP.

Even though there is a proposal now  from DT to study use of MP-DCCP, I personally think that a QUIC-based approach is more future-looking for ATSSS rather than supporting yet another transport stack (DCCP) only for this use case. Also in the IETF I was hoping that those people interesting in multipath work, would rather cluster their resources to work on MP-QUIC. I of course won’t stop anybody from working on MP-DCCP but I personally don’t think it will be adopted for ATSSS and am not sure if therefore it will be widely used in future.

Mirja



From: tsvwg <[e-mail]<mailto:[e-mail]>> on behalf of "Smith, Kevin, Vodafone" <Kevin.Smith=[e-mail]<mailto:Kevin.Smith=[e-mail]>>
Date: Thursday, 12. August 2021 at 10:45
To: Giorgi Gulbani <[e-mail]<mailto:[e-mail]>>, "[e-mail]<mailto:[e-mail]>" <[e-mail]<mailto:[e-mail]>>, "[e-mail]<mailto:[e-mail]>" <[e-mail]<mailto:[e-mail]>>
Cc: "[e-mail]<mailto:[e-mail]>" <[e-mail]<mailto:[e-mail]>>
Subject: Re: [tsvwg] WG adoption call for draft-amend-tsvwg-multipath-dccp, to end: 19th August 2021

I support WG adoption of MP-DCCP to facilitate its assessment for 3GPP ATSSS
All best,
Kevin

From: tsvwg <[e-mail]<mailto:[e-mail]>> On Behalf Of Giorgi Gulbani
Sent: 11 August 2021 14:49
To: [e-mail]<mailto:[e-mail]>; [e-mail]<mailto:[e-mail]>
Cc: [e-mail]<mailto:[e-mail]>
Subject: Re: [tsvwg] WG adoption call for draft-amend-tsvwg-multipath-dccp, to end: 19th August 2021

CYBER SECURITY WARNING: This email is from an external source - be careful of attachments and links. Please follow the Cyber Code and report suspicious emails.
I also support WG adoption of the multipath-dccp.

Kind regards,

Giorgi

From: tsvwg [mailto:[e-mail]] On Behalf Of philip.eardley=[e-mail]<mailto:philip.eardley=[e-mail]>
Sent: Tuesday, 10 August 2021 16.33
To: [e-mail]<mailto:[e-mail]>; [e-mail]<mailto:[e-mail]>
Cc: [e-mail]<mailto:[e-mail]>
Subject: Re: [tsvwg] WG adoption call for draft-amend-tsvwg-multipath-dccp, to end: 19th August 2021

I support wg adoption
Best wishes
Phil
________________________________
From: tsvwg <[e-mail]<mailto:[e-mail]>> on behalf of Gorry Fairhurst <[e-mail]<mailto:[e-mail]>>
Sent: Tuesday, August 3, 2021 9:13 am
To: [e-mail]<mailto:[e-mail]>
Cc: [e-mail]<mailto:[e-mail]>
Subject: [tsvwg] WG adoption call for draft-amend-tsvwg-multipath-dccp, to end: 19th August 2021

TSVWG,

The WG is running an adoption call for:

DCCP Extensions for Multipath Operation with Multiple Addresses

draft-amend-tsvwg-multipath-dccp<https://protect2.fireeye.com/v1/url?k=11fd7916-4e664055-11fd398d-861fcb972bfc-f35a4a522aca432c&q=1&e=d90d662d-1f31-4084-9c07-7716a118bc27&u=https%3A%2F%2Feur02.safelinks.protection.outlook.com%2F%3Furl%3Dhttps%253A%252F%252Fwww.potaroo.net%252Fietf%252Fidref%252Fdraft-amend-tsvwg-multipath-dccp%252Frfcmarkup%253Frepository%253D%252Faway%252Fietf%2526url%253D%252Faway%252Fietf%252Fall-ids%252Fdraft-amend-tsvwg-multipath-dccp-05%26data%3D04%257C01%257Cphilip.eardley%2540bt.com%257C52016cbb67804017455f08d956567cd1%257Ca7f356889c004d5eba4129f146377ab0%257C0%257C0%257C637635752309970912%257CUnknown%257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%253D%257C2000%26sdata%3DeMROW6%252FU45tmbatawD2%252FDNyDptYvQ9dLd9fOl6hlohI%253D%26reserved%3D0>
This document is currently marked as Experimental. The adoption call will end at midnight UTC on 19th August, 2021.

Please do read the draft, and send any comments/concerns to either the tsvwg or to the chairs <[e-mail]><mailto:[e-mail]>. Notes of support to progress this work, and volunteers to review the drafts will be very welcome at this stage.
Thanks, Gorry, David and Wes
(tsvwg co-chairs)

Note: The IPR search relating to this draft returns: https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-amend-tsvwg-multipath-dccp<https://protect2.fireeye.com/v1/url?k=9fbea4e8-c0259dab-9fbee473-861fcb972bfc-52cbeacecdadb17d&q=1&e=d90d662d-1f31-4084-9c07-7716a118bc27&u=https%3A%2F%2Feur02.safelinks.protection.outlook.com%2F%3Furl%3Dhttps%253A%252F%252Fdatatracker.ietf.org%252Fipr%252Fsearch%252F%253Fsubmit%253Ddraft%2526id%253Ddraft-amend-tsvwg-multipath-dccp%26data%3D04%257C01%257Cphilip.eardley%2540bt.com%257C52016cbb67804017455f08d956567cd1%257Ca7f356889c004d5eba4129f146377ab0%257C0%257C0%257C637635752309980909%257CUnknown%257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%253D%257C2000%26sdata%3Dks3L29q%252FMGSA5TUBo%252FiK3kw47%252FUhArmnkmjDQtIV3bk%253D%26reserved%3D0> (updated 19/7/2021).