Re: [ippm] Request for WG adoption

Haoyu Song <haoyu.song@futurewei.com> Fri, 09 July 2021 22:50 UTC

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From: Haoyu Song <haoyu.song@futurewei.com>
To: Tommy Pauly <tpauly@apple.com>
CC: IPPM Chairs <ippm-chairs@ietf.org>, IETF IPPM WG <ippm@ietf.org>, "draft-song-ippm-postcard-based-telemetry@ietf.org" <draft-song-ippm-postcard-based-telemetry@ietf.org>
Thread-Topic: Request for WG adoption
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Date: Fri, 09 Jul 2021 22:49:58 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ippm/UBg1jgimaDNqAheQthfrGOSo1Ac>
Subject: Re: [ippm] Request for WG adoption
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Dear IPPM chairs,

We just published a -10 version of the draft https://datatracker.ietf.org/doc/draft-song-ippm-postcard-based-telemetry/10/. In this draft we focus only on the PBT-M scheme itself and discuss its own challenges and solutions.
We believe that PBT-M is complementary to the other schemes currently in the WG including IOAM trace/E2E/DEX and it should be considered as well. Thank you very much for your consideration!

Best regards,
Haoyu

From: Haoyu Song
Sent: Friday, July 9, 2021 11:35 AM
To: Tommy Pauly <tpauly@apple.com>
Cc: IPPM Chairs <ippm-chairs@ietf.org>; IETF IPPM WG <ippm@ietf.org>; draft-song-ippm-postcard-based-telemetry@ietf.org
Subject: RE: Request for WG adoption

Dear IPPM chairs,

Could you please suggest what we can do to meet the criteria for a WG adoption call?
Could you please assign a slot in the coming IETF WG meeting for me to present the draft and solicit comments? Thank you very much!

Best regards,
Haoyu

From: Haoyu Song
Sent: Thursday, July 1, 2021 10:34 AM
To: Tommy Pauly <tpauly@apple.com<mailto:tpauly@apple.com>>
Cc: IPPM Chairs <ippm-chairs@ietf.org<mailto:ippm-chairs@ietf.org>>; IETF IPPM WG <ippm@ietf.org<mailto:ippm@ietf.org>>; draft-song-ippm-postcard-based-telemetry@ietf.org<mailto:draft-song-ippm-postcard-based-telemetry@ietf.org>
Subject: RE: Request for WG adoption

Hi Tommy,

I think here I need to give some clarification. One the one hand, the draft indeed provides some descriptions to summarize the high level ideas of the related proposals (under the on-path telemetry), but this is not the core of the draft but to help understand the field and it can be removed if considered improper in such a draft. On the other hand, the core of the draft is about the approach to use some flag to trigger the telemetry data collection. In this sense, it's an independent proposal along with IOAM, DEX, and HTS. I believe they are equally important and needed to complete the ecosystem for on-path telemetry.

I would also like to take this chance to seek more feedback from the WG and to see the level of interest and support on this work. Thanks!

Best regards,
Haoyu

From: Tommy Pauly <tpauly@apple.com<mailto:tpauly@apple.com>>
Sent: Thursday, July 1, 2021 9:58 AM
To: Haoyu Song <haoyu.song@futurewei.com<mailto:haoyu.song@futurewei.com>>
Cc: IPPM Chairs <ippm-chairs@ietf.org<mailto:ippm-chairs@ietf.org>>; IETF IPPM WG <ippm@ietf.org<mailto:ippm@ietf.org>>; draft-song-ippm-postcard-based-telemetry@ietf.org<mailto:draft-song-ippm-postcard-based-telemetry@ietf.org>
Subject: Re: Request for WG adoption

Hi Haoyu,

Thanks for bringing this up again. As we've discussed in several previous meetings, this seems to be mainly a high-level description of work that is already concrete in IOAM, DEX, etc. As such, I am inclined to say that its content should be in other drafts (as has been done).

Any adoption call would need to be predicated on more list discussion of the content.

Best,
Tommy

On Jun 30, 2021, at 10:59 AM, Haoyu Song <haoyu.song@futurewei.com<mailto:haoyu.song@futurewei.com>> wrote:

Dear IPPM Chairs,

I'm writing to request the IPPM WG to adopt the following draft "Postcard-based On-Path Flow Data Telemetry using Packet Marking"
https://datatracker.ietf.org/doc/draft-song-ippm-postcard-based-telemetry/<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-song-ippm-postcard-based-telemetry%2F&data=04%7C01%7Chaoyu.song%40futurewei.com%7C4cae751d53a845bc600a08d93cb15fdb%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637607554783193667%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=%2FA57w%2FrWm3TXoEvBCcHT2IPQQJi%2BrcgQwlTvs18EX48%3D&reserved=0>

Now the draft is in -09 version and we have colleagues from Cisco, ZTE, Huawei as well as some network operators to coauthor this work.
As another on-path telemetry technique, PBT based on packet marking complements the other works such as IOAM, DEX, and HTS to make the ecosystem complete, and I believe each can find its application scenarios. For example, the PBT based on packet marking has been applied in "draft-ietf-6man-spring-srv6-oam" (https://datatracker.ietf.org/doc/html/draft-ietf-6man-spring-srv6-oam<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-ietf-6man-spring-srv6-oam&data=04%7C01%7Chaoyu.song%40futurewei.com%7C4cae751d53a845bc600a08d93cb15fdb%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637607554783203623%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=VODdVGhSLsLDmfpWzFWIXltte8A7p2%2FA1okRktL3DMI%3D&reserved=0>) which I believe has passed the last call, but the detailed mechanisms such as configuration, data format, and export method are not covered there. Given the technique is equally applicable to other types of networks, we believe it's necessary to have a  document to formalized the method.

The draft has undergone a long line of developments since it was published in 2018. It originally covers two related but different techniques. One was latter stripped off to form an independent draft, IOAM DEX, which has been adopted by IPPM. The remaining one, PBT based on packet marking, is the core of the current draft. Thanks for the numerous discussions and feedbacks from the WG, we now have a draft with focused direction and relatively mature content.

Given the community interest and the technical merit, we now request the WG to adopt the draft and engage the WG to work on it.
Please let us know if there are any concerns, comments, and suggestions.   Thank you very much for your consideration!

Best regards,
Haoyu