Re: [Detnet] PREOF signaling

Balázs Varga A <balazs.a.varga@ericsson.com> Mon, 14 February 2022 12:46 UTC

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From: =?utf-8?B?QmFsw6F6cyBWYXJnYSBB?= <balazs.a.varga@ericsson.com>
To: Tianran Zhou <zhoutianran=40huawei.com@dmarc.ietf.org>, "Pascal Thubert (pthubert)" <pthubert=40cisco.com@dmarc.ietf.org>, "detnet@ietf.org" <detnet@ietf.org>
Thread-Topic: [Detnet] PREOF signaling
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Date: Mon, 14 Feb 2022 12:46:38 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/detnet/ft5Q0uDLT43qrtzErMdR9ZY3nro>
Subject: Re: [Detnet] PREOF signaling
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Hi,

Thanks for the comments. I agree with Tianran there is no XOR relationship between
the UDP and the HbH solution. Usage may depend on the target scenario and use cases.

Cheers
Bala’zs

From: detnet <detnet-bounces@ietf.org> On Behalf Of Tianran Zhou
Sent: Monday, February 14, 2022 4:16 AM
To: Pascal Thubert (pthubert) <pthubert=40cisco.com@dmarc.ietf.org>; detnet@ietf.org
Subject: Re: [Detnet] PREOF signaling

Hi Pascal,

I think the choice between the UDP and HbH depends on the target scenario and use case.
If only need tasks on the server to behave, I think UDP should be a good choice.
If the on path network devices need to behave, I think HbH option should be better.

So what’s the scenario?

Best,
Tianran

From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal Thubert (pthubert)
Sent: Sunday, February 13, 2022 4:22 PM
To: detnet@ietf.org<mailto:detnet@ietf.org>
Subject: [Detnet] PREOF signaling

Dear WG

The HbH draft is soon to expire, and I do not see that we had a deep discussion and a consensus on which kind of signaling will work best for DetNet IPv6.

We have a proposal to encapsulate over UDP, which appears ready for adoption, and one to use IPv6 extension headers, which is ready to expire; arguments on the table include:

Size of the encapsulation
Complexity of silicon implementation
Reuse of MPLS design
IP version independence
DetNet and SRv6
Flow vs path (the pipe and the water)

I believe that each of those topics deserves a solid discussion before the group jumps on the UDP solution. The wrong decision now could mean a lot of wasted effort in the future.

Regards,

Pascal

Début du message transféré :
De: IETF Secretariat <ietf-secretariat-reply@ietf.org<mailto:ietf-secretariat-reply@ietf.org>>
Date: 13 février 2022 à 09:04:11 UTC+1
À: draft-pthubert-detnet-ipv6-hbh@ietf.org<mailto:draft-pthubert-detnet-ipv6-hbh@ietf.org>
Objet: Expiration impending: <draft-pthubert-detnet-ipv6-hbh-06.txt>
The following draft will expire soon:

Name:     draft-pthubert-detnet-ipv6-hbh
Title:    IPv6 Options for DetNet
State:    I-D Exists
Expires:  2022-02-25 (in 1 week, 4 days)