Re: [IPFIX] WG Last Call for draft-ietf-ipfix-information-model-rfc5102bis-05.txt

Paul Aitken <paitken@cisco.com> Wed, 31 October 2012 14:55 UTC

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Date: Wed, 31 Oct 2012 14:55:47 +0000
From: Paul Aitken <paitken@cisco.com>
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To: Brian Trammell <trammell@tik.ee.ethz.ch>
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Cc: Nevil Brownlee <n.brownlee@auckland.ac.nz>, IPFIX Working Group <ipfix@ietf.org>
Subject: Re: [IPFIX] WG Last Call for draft-ietf-ipfix-information-model-rfc5102bis-05.txt
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Brian,

> My inclination is we should define naming match as case-insensitive, since the intention is not to have these names used on the wire, and the only examples I can think of of collision are typographical in nature.

+1.


> How about:
>
> A delta counter counts only observations made since the last export of a Flow Record for a given Flow.

That's back to my point that the observation might not be exported.

More to the point, delta/total counting is a function of the MP. Whether 
the MP hands data to the EP, and what the EP does or does not do with 
that data, should have no bearing on how the MP meters subsequent data. 
So the definition should be purely in MP terms ("last export" being an 
EP term).

P.