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Re: [sfc] Use of Alternate Marking Method in SFC

Greg Mirsky <gregimirsky@gmail.com> Tue, 04 July 2017 00:13 UTC

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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 03 Jul 2017 17:13:07 -0700
Message-ID: <CA+RyBmV28=KE9Ynse06QxnJoqxsMuem6gFacvrEtChAyaikSnw@mail.gmail.com>
To: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
Cc: "sfc@ietf.org" <sfc@ietf.org>, "Fioccola Giuseppe (giuseppe.fioccola@telecomitalia.it)" <giuseppe.fioccola@telecomitalia.it>
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Subject: Re: [sfc] Use of Alternate Marking Method in SFC
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Hi Carlos,
we've received the same comment as #2 from Tal and have clarified location
and IANA consideration in version -01.
As for your first question. There are many advantages of Alternate Marking
methods that we will be glad to discuss during our presentation at SFC
meeting in Prague.
We'll improve wording that characterizes alternate marking method as
producing measurement as near passive method according to RFC 7799.

Regards,
Greg

On Mon, Jul 3, 2017 at 4:58 PM, Carlos Pignataro (cpignata) <
cpignata@cisco.com> wrote:

> Hi Greg, Ciao Giuseppe!
>
> Thanks for sharing this document with SFC!
>
> Looking at it, I have three main high-level comments:
>
>    1. Overall: While clearly I see the usability of this, I wonder if
>    this is too narrow of a solution in presence of things like IOAM that allow
>    to do marking as well as much richer set of performance measurements.
>    2. Syntax: The draft talks about two bits, but their location is not
>    specified! That makes for an IANA Considerations section that is trivial.
>    (or going back to #1, the two bits coulee have easily be placed in IOAM.
>    3. “can be viewed as true example of passive performance” -> The
>    definition from RFC 7799 seems to potentially disagree with this.
>
>
> Thanks!
>
> Carlos.
>
> On Jun 14, 2017, at 10:53 AM, Greg Mirsky <gregimirsky@gmail.com> wrote:
>
> Dear All,
> would like to bring your attention to the draft  Performance Measurement
> (PM) with Alternate Marking Method in Service
> <https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00> Function Chaining
> (SFC) Domain <https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00>  we've
> submitted earlier. Alternate Marking method allows performance measurement
> performed close to passive measurement methods.
> Greatly appreciate your questions, comments, and suggestions.
>
> Regards,
> Greg
>
>
> _______________________________________________
> sfc mailing list
> sfc@ietf.org
> https://www.ietf.org/mailman/listinfo/sfc
>
>
> —
> Carlos Pignataro, carlos@cisco.com
>
> *“Sometimes I use big words that I do not fully understand, to make myself
> sound more photosynthesis."*
>
>

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