Re: [IPFIX] errata eid7775 RE: [**EXTERNAL**] RE: WG LC: IPFIX documents

[Andrew Feren <[e-mail]>]

Hi Benoit,

I see your point about not having an errata on a Cisco RFC.  That being said….

It appears that the IANA page has listed forwardingStatus(89) as unsigned8 since 2018.  Also CCO-NF9FMT<http://www.cisco.com/en/US/technologies/tk648/tk362/technologies_white_paper09186a00800a3db9.html>, the other cisco document referenced for forwardingStatus(89), is pretty unambiguous that forwardingStatus(89) is 1 byte.  Beyond that I don’t have strong feelings about this.  The different int sizes never seemed all that useful to me anyway since mostly it is the size sent in the template that matters.

-Andrew

From: IPFIX <[e-mail]> on behalf of Benoit Claise <benoit.claise=[e-mail]>
Date: Monday, February 5, 2024 at 12:37 PM
To: [e-mail] <[e-mail]>, Aitken, Paul <[e-mail]>, Joe Clarke (jclarke) <[e-mail]>, [e-mail] <[e-mail]>
Cc: [e-mail] <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>
Subject: Re: [IPFIX] errata eid7775 RE: [**EXTERNAL**] RE: WG LC: IPFIX documents
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Hi Paul,
On 1/23/2024 12:14 PM, [e-mail]<mailto:[e-mail]> wrote:
    4.3.  forwardingStatus

    In particular, the registered Abstract
   Data Type is unsigned8, while it must be unsigned32.

Why must it be?
[Med] As per the definition in RFC7270.

I've opened an errata for that: https://www.rfc-editor.org/errata/eid7775
[Med] I don’ think an erratum applies here because the intent of 7270 is clearly unsigned32:

While you and I were working on NetFlow at Cisco when we wrote the RFC 7270, I don't feel comfortable having an errata on a Cisco-specific IPFIX.
Anyway, what is the issue with keeping unsigned32, should we be liberal in what we accept?
And we know that the reduced-size encoding (https://datatracker.ietf.org/doc/html/rfc7011.html#section-6.2) will be used anyway. It's not even useful to have this sentence ("
IPFIX reduced-size encoding is used as required") in the description but I can live with it.

Regards, Benoit


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