Re: [ippm] FW: New Version Notification for draft-wang-ippm-stamp-hbh-extensions-04.txt

Hi Giuseppe,
thank you for bringing this work to the discussion. I have several notes
and questions, and would appreciate your help.

   - It is noted in Introduction:

However, the performance of intermediate nodes and links that STAMP test
packets traverse are invisible. In addition, the STAMP instance must be
configured at every intermediate node to measure the performance per node
and link that test packets traverse, which increases the complexity of OAM
in large-scale networks.

I agree with the observation in the first sentence, but I wonder how it
leads to the conclusion expressed in the second sentence. Is it implied
that a STAMP test session is required between the Session-Sender and each
downstream node as a Session-Reflector?

   - If I understand the proposed mechanism for HbH measurement of
   performance metrics, it is based on IOAM. Is that right? If that is the
   case, could you clarify where the IOAM header is placed - underlay network
   (e.g., IPv6 or MPLS), service network (e.g., SFC or BIER), or into a STAMP
   test packet?
   - If I assume that a STAMP session is any type of an underlay or service
   network, how do the proposed STAMP extensions relate to, for example,
   Preallocated IOAM Trace Type? Would it be logical to introduce some new
   IOAM data types rather than make them STAMP-specific?

Regards,
Greg

On Fri, Jul 7, 2023 at 2:53 AM Giuseppe Fioccola <giuseppe.fioccola=
40huawei.com@dmarc.ietf.org> wrote:

> Hi All,
> Please note that we have just updated the draft on STAMP extensions for
> Hop-by-Hop data collection. These extensions to STAMP enable OAM data
> measurement at every node and link along a STAMP test path.
>
> Your comments and reviews are welcomed.
>
> Regards,
>
> Giuseppe
> (on behalf of the coauthors)
>
>
> -----Original Message-----
> From: internet-drafts@ietf.org <internet-drafts@ietf.org>
> Sent: Friday, July 7, 2023 10:55 AM
> To: Chang Liu <liuc131@chinaunicom.cn>; Giuseppe Fioccola <
> giuseppe.fioccola@huawei.com>; Gyan Mishra <gyan.s.mishra@verizon.com>;
> Hongwei Yang <yanghongwei@chinamobile.com>; Tianran Zhou <
> zhoutianran@huawei.com>
> Subject: New Version Notification for
> draft-wang-ippm-stamp-hbh-extensions-04.txt
>
>
> A new version of I-D, draft-wang-ippm-stamp-hbh-extensions-04.txt
> has been successfully submitted by Giuseppe Fioccola and posted to the
> IETF repository.
>
> Name:           draft-wang-ippm-stamp-hbh-extensions
> Revision:       04
> Title:          Simple Two-way Active Measurement Protocol Extensions for
> Hop-by-Hop OAM Data Collection
> Document date:  2023-07-07
> Group:          Individual Submission
> Pages:          18
> URL:
> https://www.ietf.org/archive/id/draft-wang-ippm-stamp-hbh-extensions-04.txt
> Status:
> https://datatracker.ietf.org/doc/draft-wang-ippm-stamp-hbh-extensions/
> Htmlized:
> https://datatracker.ietf.org/doc/html/draft-wang-ippm-stamp-hbh-extensions
> Diff:
> https://author-tools.ietf.org/iddiff?url2=draft-wang-ippm-stamp-hbh-extensions-04
>
> Abstract:
>    This document defines optional TLVs which are carried in Simple Two-
>    way Active Measurement Protocol (STAMP) test packets to enhance the
>    STAMP based functions.  Such extensions to STAMP enable OAM data
>    measurement and collection at every node and link along a STAMP test
>    packet's delivery path without maintaining a state for each
>    configured STAMP-Test session at every devices.
>
>
>
>
>
> The IETF Secretariat
>
>
>
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm
>