Re: [PMOL] PMOL directorate: meeting at the IETF?

Benoit Claise <bclaise@cisco.com> Mon, 29 October 2012 01:07 UTC

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Date: Sun, 28 Oct 2012 20:07:46 -0500
From: Benoit Claise <bclaise@cisco.com>
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To: "Romascanu, Dan (Dan)" <dromasca@avaya.com>
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Cc: xrblock-chairs@tools.ietf.org, Ron Bonica <rbonica@juniper.net>, ippm-chairs@tools.ietf.org, pmol@ietf.org, Wesley Eddy <wes@mti-systems.com>
Subject: Re: [PMOL] PMOL directorate: meeting at the IETF?
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Hi Dan,

You're right. Daylight savings yesterday in Belgium + daylight saving 
next Sunday in Atlanta + a little bit of distraction of my side = my 
mistake. I was unable to remove the entry, so I marked myself 
unavailable for that slot.

All, please don't forgot to insert your availabilities.

Regards, Benoit
>
> Hi Benoit,
>
> Wednesday at 3:40PM does not seem right, as it enters plenary time, 
> unless we believe that we shall not need more than 20 min.
>
> Dan
>
> *From:*pmol-bounces@ietf.org [mailto:pmol-bounces@ietf.org] *On Behalf 
> Of *Benoit Claise
> *Sent:* Tuesday, October 23, 2012 12:48 AM
> *To:* Benoit Claise
> *Cc:* xrblock-chairs@tools.ietf.org; Ron Bonica; 
> ippm-chairs@tools.ietf.org; pmol@ietf.org; Wesley Eddy
> *Subject:* Re: [PMOL] PMOL directorate: meeting at the IETF?
>
> With doodle this time http://www.doodle.com/fz3gxri76ngzqygv
> Thanks Carlos
>
> B.
>
>     Dear PMOL directorate members,
>
>     During my review of the latest AVTCORE and  XRBLOCK drafts (
>     draft-ietf-xrblock-rtcp-xr-pdv and draft-ietf-avtcore-monarch), I
>     came to the conclusion that we have an issue in terms of
>     performance metrics at the IETF, and actually in the industry.
>
>     As background information, here is my DISCUSS on the two drafts
>
>     ----------------------------------------------------------------------
>
>     DISCUSS:
>
>     ----------------------------------------------------------------------
>
>       
>
>     My entire point is more a DISCUSS-DISCUSS, for both
>
>     draft-ietf-avtcore-monarch-19 and draft-ietf-xrblock-rtcp-xr-pdv-05.txt.
>
>     Sorry to pick on these two drafts, but we need to have an IESG
>
>     performance metrics discussion.
>
>     Where does the list of performance metric definitions come from at the
>
>     IETF?
>
>     We have multiple sources:
>
>     - IPPM for IP performance metrics
>
>     - RTCP for RTP performance metrics:
>
>        Definitions in the document themselves or potentially referencing some
>
>     other SDOs
>
>        Example:http://tools.ietf.org/html/draft-ietf-xrblock-rtcp-xr-pdv-05
>
>         bits 014-011
>
>                  0: MAPDV2, Clause 6.2.3.2 of [G.1020],
>
>                  1: 2-point PDV, Clause 6.2.4 of [Y.1540].
>
>     - PMOL: Performance Metrics at Other Layers, with
>
>        RFC 6076 on Basic Telephony SIP End-to-End Performance Metrics
>
>     - IPFIX will one day or the other exports performance metrics.
>
>        I see for example
>
>        http://tools.ietf.org/html/draft-akhter-opsawg-perfmon-ipfix-03  <http://tools.ietf.org/html/draft-akhter-opsawg-perfmon-ipfix-03>
>
>        It's again a redefinition, and it should not be!
>
>       
>
>     My concerns are that we start to define performance metrics in different
>
>     parts of the IETF, without consistency.
>
>       
>
>     We have defined RFC 6390 on "Guidelines for Considering New Performance
>
>     Metric Development", which ask for specific definition
>
>     Seehttp://tools.ietf.org/html/rfc6390#section-5.4.4
>
>       
>
>     I believe that the IETF should at least:
>
>     - define the performance metrics in a consistent way according to
>
>     RFC6390.
>
>     - document those performance metrics in a single location
>
>       
>
>     So my questions are:
>
>     - are we defining the performance metrics the right way?
>
>     - where is this shared repository of performance metrics (at least for
>
>     the ones created in the IETF)?
>
>     - is the PMOL directorate (RFC 6390) used effectively?
>
>     After discussing with Dan Romascanu, we came to this conclusion
>
>     I had a discussion with Dan Romascanu, and we settled on:
>
>     - RFC 6390 template is required for new perf metric definition
>
>     - RFC 6390 template is a nice-to-have when we refer to an existing perf metric
>
>     Nice-to-have because the performance metric reference doesn't always include
>
>     all the required information about: measurement points, measurement timing, use
>
>     and applications, reporting model, etc... but focus only on the "Method of
>
>     Measurement or Calculation"
>
>     I would like to have a meeting during the IETF, with the following
>     agenda
>
>     - are we defining the performance metrics the right way?
>
>     - where is this shared repository of performance metrics (at least for
>
>     the ones created in the IETF)?
>
>     - is the PMOL directorate (RFC 6390) used effectively?
>
>     - conclusion discussed with Dan
>
>       
>
>     Here is a doodle invite. Please let me know if/when you are available.
>
>     Your feedback on this mailer is also welcome.
>
>     Regards, Benoit
>