Re: [Detnet] Barry Leiba's No Objection on draft-ietf-detnet-mpls-11: (with COMMENT)

"Grossman, Ethan A." <eagros@dolby.com> Fri, 04 September 2020 19:35 UTC

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From: "Grossman, Ethan A." <eagros@dolby.com>
To: Barry Leiba <barryleiba@computer.org>, Balázs Varga A <balazs.a.varga=40ericsson.com@dmarc.ietf.org>
CC: The IESG <iesg@ietf.org>, "detnet@ietf.org" <detnet@ietf.org>, "draft-ietf-detnet-mpls@ietf.org" <draft-ietf-detnet-mpls@ietf.org>, "detnet-chairs@ietf.org" <detnet-chairs@ietf.org>
Thread-Topic: Barry Leiba's No Objection on draft-ietf-detnet-mpls-11: (with COMMENT)
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Date: Fri, 04 Sep 2020 19:35:04 +0000
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Subject: Re: [Detnet] Barry Leiba's No Objection on draft-ietf-detnet-mpls-11: (with COMMENT)
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Hi Balázs,
Regarding the word "what" I think the word you want is "which": 

Was:  "and (2) to allow non-skip zero S/N what simplifies implementation."
Is:       "and (2) to allow non-skip zero S/N, which could simplify implementations".

Regarding "non-skip zero S/N" I know there has been discussion of this, is there anything published that we could provide a reference to? Or maybe just copy a longer version of the name for this from somewhere else...
Maybe "sequence numbering systems which include the value zero as a valid sequence number"

Ethan.


-----Original Message-----
From: Barry Leiba <barryleiba@computer.org> 
Sent: Friday, September 4, 2020 11:58 AM
To: Balázs Varga A <balazs.a.varga=40ericsson.com@dmarc.ietf.org>
Cc: The IESG <iesg@ietf.org>; Grossman, Ethan A. <eagros@dolby.com>; detnet@ietf.org; draft-ietf-detnet-mpls@ietf.org; detnet-chairs@ietf.org
Subject: Re: Barry Leiba's No Objection on draft-ietf-detnet-mpls-11: (with COMMENT)

Hi, Balázs, and thanks for the quick replies on both documents.

> Regarding:
> - Section 2.1 and having data-plane-framework as informative and not as normative.
> The reference in section 2.1 is only for the terminology used in the data-plane-framework.
> That is the reason to have it as an informative reference.

For both documents, the data-plane-framework draft has terminology, at least, that needs to be understood in order to fully understand these documents.  That makes the data-plane-framework draft a normative reference -- it doesn't matter that data-plane-framework is informational... it matters that unless you understand the terminology in data-plane-framework you're missing something with respect to the detnet-mpls docs.

> - Section 4.2.1, clarifying "and (2) to allow non-skip zero S/N what simplifies implementation."
> Text here intends to refer, that a circular unsigned sequence number 
> space - including 0 as well - is easier to implement. The Generic PW 
> MPLS Control Word (PWMCW) defined in [RFC4385] uses a circular unsigned 16-bit number space that _excludes_ the value zero.

Please re-word the text in the document to make it more understandable.  As I say, I can't parse the quoted phrase at all.  I don't know what "non-skip zero" means, and I think the word "what" is not the right word, and doesn't make sense there.

Barry