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Re: [DMM] DMM WG Adoption Poll (2) for "Mobile User Plane Evolution" - draft-zzhang-dmm-mup-evolution-06

Satoru Matsushima <satoru.matsushima@gmail.com> Sat, 21 October 2023 04:22 UTC

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From: Satoru Matsushima <satoru.matsushima@gmail.com>
Date: Sat, 21 Oct 2023 13:21:47 +0900
Message-ID: <CAFwJXX6ib12mzOEDo7XWaVtyt6mHRmjMq2LsN=L1Du3akU9Wow@mail.gmail.com>
To: "Jeffrey (Zhaohui) Zhang" <zzhang=40juniper.net@dmarc.ietf.org>
Cc: "Horiba, Katsuhiro" <katsuhiro.horiba@g.softbank.co.jp>, "dmm@ietf.org" <dmm@ietf.org>
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Subject: Re: [DMM] DMM WG Adoption Poll (2) for "Mobile User Plane Evolution" - draft-zzhang-dmm-mup-evolution-06
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Katsuhiro, Jeffrey, please clarify what the control plane means here. E.g.,
(1) control plane in mobility management (MM) and session management (SM)
in 5G architecture, (2) signaling protocols for N1/2 and N4, or (3) control
plane for IP routing, BGP, etc.,

Cheers,
--satoru

On Sat, Oct 21, 2023 at 5:28 AM Jeffrey (Zhaohui) Zhang <zzhang=
40juniper.net@dmarc.ietf.org> wrote:

> Hi Katsuhiro,
>
>
>
> Please note that this document does not conflict with draft-mhkk.
>
>
>
> Regarding “Control plane convergence should indeed play a pivotal role”, I
> observe that draft-mhkk is still based on the separate N2/N4 signaling in
> case of 5G, even though the N4 is translated to BGP.
>
>
>
> In fact, while the AN + UPF integration will benefit from integrated
> signaling in 6G, in 5G the integration can be done as an implementation
> choice w/o integrating N2/N4, and it can even use BGP signaling (that was
> defined for draft-mhkk) – as in
> https://datatracker.ietf.org/doc/draft-zzhang-dmm-anup5g-signaling/.
>
>
>
> Thanks.
> Jeffrey
>
>
>
> Juniper Business Use Only
>
> *From:* dmm <dmm-bounces@ietf.org> *On Behalf Of * Horiba, Katsuhiro
> *Sent:* Friday, October 20, 2023 10:03 AM
> *To:* dmm@ietf.org
> *Subject:* Re: [DMM] DMM WG Adoption Poll (2) for "Mobile User Plane
> Evolution" - draft-zzhang-dmm-mup-evolution-06
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
> Hello,
>
> > ANUP solely addresses user plane convergence and tries to liaise with
> 3GPP,
> > but I'm afraid this is a half-baked attempt.
>
> I concur with this observation, as a co-author of
> draft-mhkk-dmm-srv6mup-architecture-05.
>
> Control plane convergence should indeed play a pivotal role in realizing
> the original DMM concept,
>
> as the control plane information serves as the foundation for route
> advertisements from (R)AN.
>
> The genuine potential of ANUP can be fully realized when both user and
> control plane convergence are achieved.
>
> Is there anyone willing to take the lead in driving control plane
> convergence for (R)AN within the IETF?
>
> Best Regards,
> Katsuhiro Horiba
> _______________________________________________
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