Re: [Detnet] New Version Notification for draft-varga-detnet-ip-preof-00.txt

Balázs Varga A <balazs.a.varga@ericsson.com> Fri, 11 June 2021 13:04 UTC

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To: "Pascal Thubert (pthubert)" <pthubert=40cisco.com@dmarc.ietf.org>, Stewart Bryant <stewart.bryant@gmail.com>
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Thread-Topic: [Detnet] New Version Notification for draft-varga-detnet-ip-preof-00.txt
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Archived-At: <https://mailarchive.ietf.org/arch/msg/detnet/Rta9XKGwFzoeor3V9LbRkqLncmc>
Subject: Re: [Detnet] New Version Notification for draft-varga-detnet-ip-preof-00.txt
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Hi Pascal,

Thanks for the feedback and for the heads-up. I'm reviewing your draft, will come back to it.

Just for clarification "detnet-ip-preof" is fully in-line with existing DetNet RFCs, no extra data plane needed.

Cheers
Bala'zs

-----Original Message-----
From: Pascal Thubert (pthubert) <pthubert=40cisco.com@dmarc.ietf.org> 
Sent: Friday, June 11, 2021 11:20 AM
To: Stewart Bryant <stewart.bryant@gmail.com>om>; Balázs Varga A <balazs.a.varga@ericsson.com>
Cc: detnet@ietf.org
Subject: RE: [Detnet] New Version Notification for draft-varga-detnet-ip-preof-00.txt

Hello Stewart:

There's effectively an alternate proposal already on the table but it comes neither from MPLS thinking as this one does, or from SRv6 as you are suggesting below.
It's plain IPv6 and leverages the HbH Option Header.

The main benefit of the HbH OH is that it is placed immediately after the IPv6 header in plain sight for the DetNet nodes. 
Along a DetNet path there's the expectation that all nodes are under an administrative control so the usual issues against HbH OH like with middle boxes do not apply.

On the side the draft allows to separate the flow signaling from the path signaling used by the forwarding sublayer. This is useful for fate sharing, e.g., for OAM or QUIC flows.
Then there's provision for signaling network coding portions of the same packet, so the reordering is done only on the packet but the portions can be delivered in any order.

Please see: https://datatracker.ietf.org/doc/html/draft-pthubert-detnet-ipv6-hbh, I just republished.

Keep safe;

Pascal

> -----Original Message-----
> From: detnet <detnet-bounces@ietf.org> On Behalf Of Stewart Bryant
> Sent: vendredi 11 juin 2021 10:01
> To: Balázs Varga A <balazs.a.varga=40ericsson.com@dmarc.ietf.org>
> Cc: Stewart Bryant <stewart.bryant@gmail.com>om>; detnet@ietf.org
> Subject: Re: [Detnet] New Version Notification for 
> draft-varga-detnet-ip- preof-00.txt
> 
> This is a good approach which I support. However, I anticipate a 
> counter attack by the SRv6 proponents that will propose putting the 
> information in the suffix of the IPv6 address.
> 
> What you are doing is to create a set of underlay UDP/IP tunnels 
> between an overlay set of DetNet nodes. I think it might be useful to 
> clarify that as the underlying model.
> 
> - Stewart
> 
> > On 9 Jun 2021, at 11:23, Balázs Varga A
> <balazs.a.varga=40ericsson.com@dmarc.ietf.org> wrote:
> >
> > Hi,
> >
> > We have created a new draft to describe how to use PREOF in case of 
> > DetNet
> IP.
> > It works for both IP v4 and IPv6. Furthermore it reuses existing 
> > DetNet data plane solutions (e.g., [RFC8964], [RFC9025]) and allows 
> > with minimal implementation effort the DetNet service sub-layer for 
> > IP
> packet switched networks.
> >
> > Comments/suggestions are welcome.
> >
> > Cheers
> > Bala'zs
> >
> > -----Original Message-----
> > From: internet-drafts@ietf.org <internet-drafts@ietf.org>
> > Sent: Wednesday, June 9, 2021 12:18 PM
> > To: Andrew G. Malis <agmalis@gmail.com>om>; Balázs Varga A 
> > <balazs.a.varga@ericsson.com>om>; Janos Farkas 
> > <Janos.Farkas@ericsson.com>om>; Andrew Malis <agmalis@gmail.com>om>; 
> > Balázs Varga A <balazs.a.varga@ericsson.com>om>; Janos Farkas 
> > <Janos.Farkas@ericsson.com>
> > Subject: New Version Notification for 
> > draft-varga-detnet-ip-preof-00.txt
> >
> >
> > A new version of I-D, draft-varga-detnet-ip-preof-00.txt
> > has been successfully submitted by =?utf-8?q?Bal=C3=A1zs_Varga?= and 
> > posted
> to the IETF repository.
> >
> > Name:		draft-varga-detnet-ip-preof
> > Revision:	00
> > Title:		Deterministic Networking (DetNet): PREOF for DetNet IP
> > Document date:	2021-06-09
> > Group:		Individual Submission
> > Pages:		12
> > URL:            https://www.ietf.org/archive/id/draft-varga-detnet-ip-
> preof-00.txt
> > Status:         https://datatracker.ietf.org/doc/draft-varga-detnet-ip-
> preof/
> > Htmlized:       https://datatracker.ietf.org/doc/html/draft-varga-detnet-
> ip-preof
> >
> >
> > Abstract:
> >   This document describes how DetNet IP data plane can support the
> >   Packet Replication, Elimination, and Ordering Functions (PREOF) based
> >   on [RFC9025].
> >
> >
> >
> >
> > The IETF Secretariat
> >
> >
> > _______________________________________________
> > detnet mailing list
> > detnet@ietf.org
> > https://www.ietf.org/mailman/listinfo/detnet
> 
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
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