Re: [ippm] Fwd: New Version Notification for draft-mirsky-ippm-hybrid-two-step-04.txt

Greg Mirsky <gregimirsky@gmail.com> Thu, 10 October 2019 20:20 UTC

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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Thu, 10 Oct 2019 13:19:42 -0700
Message-ID: <CA+RyBmXdyPS0p1CTTd=U-U28a_ch+6Jbzq0TsTjKYxkV3czk2w@mail.gmail.com>
To: Haoyu Song <haoyu.song@futurewei.com>
Cc: IETF IPPM WG <ippm@ietf.org>
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Subject: Re: [ippm] Fwd: New Version Notification for draft-mirsky-ippm-hybrid-two-step-04.txt
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Hi Haoyu,
thank you for your interest in the HTS proposal. I've read the draft you've
mentioned and am glad that we have independently arrived to the same
conclusion - it is time to discuss specifics of collecting telemetry
information in multicast networks. While we discuss various telemetry
protocols we implicitly talk about only unicast flows. As a result,
deploying these telemetry protocols in multicast network may cause some
unexpected results.
I think it would be great to discuss telemetry collection in multicast
networks in detail at the meeting.

Regards,
Greg

On Tue, Oct 8, 2019 at 4:50 PM Haoyu Song <haoyu.song@futurewei.com> wrote:

> Hi Greg,
>
>
>
> I agree that multicast is an important use case to cover for any telemetry
> technique.
>
> In our draft,
> https://tools.ietf.org/html/draft-song-multicast-telemetry-00, we also
> discussed the on-path multicast telemetry techniques that combine both IOAM
> and PBT for efficient multicast support.
>
>
>
> Regards,
>
> Haoyu
>
>
>
> *From:* ippm <ippm-bounces@ietf.org> *On Behalf Of * Greg Mirsky
> *Sent:* Tuesday, October 08, 2019 10:09 AM
> *To:* IETF IPPM WG <ippm@ietf.org>
> *Subject:* [ippm] Fwd: New Version Notification for
> draft-mirsky-ippm-hybrid-two-step-04.txt
>
>
>
> Dear All,
>
> the new version of the Hybrid Two-Step draft includes the new section on
> the use of HTS in a multicast network. The goal is to avoid unnecessary
> replication of telemetry information collected on-path while multicast data
> packets traverse a multicast distribution tree. At the same time, a
> centralized controller should have sufficient information associated with
> collected telemetry information to reconstruct the state of the traversed
> multicast path based on HTS packets.
>
>  Much appreciate your comments, questions, and suggestions.
>
>
>
> Regards,
>
> Greg
>
> ---------- Forwarded message ---------
> From: <internet-drafts@ietf.org>
> Date: Tue, Oct 8, 2019 at 10:00 AM
> Subject: New Version Notification for
> draft-mirsky-ippm-hybrid-two-step-04.txt
> To: Gregory Mirsky <gregimirsky@gmail.com>, Wang Lingqiang <
> wang.lingqiang@zte.com.cn>, Guo Zhui <guo.zhui@zte.com.cn>
>
>
>
>
> A new version of I-D, draft-mirsky-ippm-hybrid-two-step-04.txt
> has been successfully submitted by Greg Mirsky and posted to the
> IETF repository.
>
> Name:           draft-mirsky-ippm-hybrid-two-step
> Revision:       04
> Title:          Hybrid Two-Step Performance Measurement Method
> Document date:  2019-10-08
> Group:          Individual Submission
> Pages:          11
> URL:
> https://www.ietf.org/internet-drafts/draft-mirsky-ippm-hybrid-two-step-04.txt
> <https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Finternet-drafts%2Fdraft-mirsky-ippm-hybrid-two-step-04.txt&data=02%7C01%7Chaoyu.song%40futurewei.com%7C8bb3a78d03c2465bf11708d74c126511%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637061514211735388&sdata=VK5DdXwWKpWfcjx9No6l%2B1564W7SFYcXK3FOTvDpcmI%3D&reserved=0>
> Status:
> https://datatracker.ietf.org/doc/draft-mirsky-ippm-hybrid-two-step/
> <https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-mirsky-ippm-hybrid-two-step%2F&data=02%7C01%7Chaoyu.song%40futurewei.com%7C8bb3a78d03c2465bf11708d74c126511%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637061514211745374&sdata=Jsz53OwTWAQ13C2OFaY54sSvtvtR26bVaJQ9F7T7BkA%3D&reserved=0>
> Htmlized:
> https://tools.ietf.org/html/draft-mirsky-ippm-hybrid-two-step-04
> <https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftools.ietf.org%2Fhtml%2Fdraft-mirsky-ippm-hybrid-two-step-04&data=02%7C01%7Chaoyu.song%40futurewei.com%7C8bb3a78d03c2465bf11708d74c126511%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637061514211745374&sdata=oUEuJ4DWh9bjGgaNaJBh7Yyxla190NNjOnERDjakXcQ%3D&reserved=0>
> Htmlized:
> https://datatracker.ietf.org/doc/html/draft-mirsky-ippm-hybrid-two-step
> <https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-mirsky-ippm-hybrid-two-step&data=02%7C01%7Chaoyu.song%40futurewei.com%7C8bb3a78d03c2465bf11708d74c126511%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637061514211755371&sdata=FEalLkhr6w6Lgqo1lc3HuduuBug7OUhfvzXOhH8PBy4%3D&reserved=0>
> Diff:
> https://www.ietf.org/rfcdiff?url2=draft-mirsky-ippm-hybrid-two-step-04
> <https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Frfcdiff%3Furl2%3Ddraft-mirsky-ippm-hybrid-two-step-04&data=02%7C01%7Chaoyu.song%40futurewei.com%7C8bb3a78d03c2465bf11708d74c126511%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637061514211755371&sdata=mQUZJjS70Oy7EbPHuAO8O%2FxpC4oaz2duYg5trtMlSrU%3D&reserved=0>
>
> Abstract:
>    Development of, and advancements in, automation of network operations
>    brought new requirements for measurement methodology.  Among them is
>    the ability to collect instant network state as the packet being
>    processed by the networking elements along its path through the
>    domain.  This document introduces a new hybrid measurement method,
>    referred to as hybrid two-step, as it separates the act of measuring
>    and/or calculating the performance metric from the act of collecting
>    and transporting network state.
>
>
>
>
> Please note that it may take a couple of minutes from the time of
> submission
> until the htmlized version and diff are available at tools.ietf.org
> <https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftools.ietf.org&data=02%7C01%7Chaoyu.song%40futurewei.com%7C8bb3a78d03c2465bf11708d74c126511%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637061514211755371&sdata=BDJo1loEJXAvHrsrtDaAM7lyMzfnDHybM26mgM7hDXM%3D&reserved=0>
> .
>
> The IETF Secretariat
>