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

"Carlos Pignataro (cpignata)" <cpignata@cisco.com> Mon, 03 July 2017 23:59 UTC

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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: Greg Mirsky <gregimirsky@gmail.com>
CC: "sfc@ietf.org" <sfc@ietf.org>, "Fioccola Giuseppe (giuseppe.fioccola@telecomitalia.it)" <giuseppe.fioccola@telecomitalia.it>
Thread-Topic: [sfc] Use of Alternate Marking Method in SFC
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Date: Mon, 03 Jul 2017 23:58:46 +0000
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Subject: Re: [sfc] Use of Alternate Marking Method in SFC
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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<mailto: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


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—
Carlos Pignataro, carlos@cisco.com<mailto:carlos@cisco.com>

“Sometimes I use big words that I do not fully understand, to make myself sound more photosynthesis."

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