[ippm] Éric Vyncke's No Objection on draft-ietf-ippm-ioam-direct-export-09: (with COMMENT)

Éric Vyncke via Datatracker <noreply@ietf.org> Tue, 28 June 2022 05:56 UTC

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Subject: [ippm] Éric Vyncke's No Objection on draft-ietf-ippm-ioam-direct-export-09: (with COMMENT)
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Éric Vyncke has entered the following ballot position for
draft-ietf-ippm-ioam-direct-export-09: No Objection

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# Éric Vyncke, INT AD, comments for draft-ietf-ippm-ioam-direct-export-09
CC @evyncke

Thank you for the work put into this document.

Please find below some non-blocking COMMENT points (but replies would be
appreciated even if only for my own education).

Thanks to Bernie Volz for his internet directorate review at:
(please consider Bernie's comments as mine).

Special thanks to Tommy Pauly for the shepherd's detailed write-up including
the WG consensus even if it lacks the justification of the intended status and
uses an unusual templte.

I hope that this helps to improve the document,




### No export method specified

Just curious... why isn't IPFIX selected as the export method (or even a
streaming telemetry)? The abstract says "The exporting method and format are
outside the scope of this document."

### Repetition in section 3.1

The sentence "The DEX Option-Type is used as a trigger to collect and/or export
IOAM data" appears multiple times in this document and looks quite repetitive.

### Section 3.1

s/MAY export and/or collect/MAY export and/or MAY collect/ ? (just to be clear)

### Section 3.1.1 mandatory sampling ?

The 1st paragraph contains a "MUST" rather than a "SHOULD" making sampling a
mandatory feature. Isn't this too strong ? Especially when aggregation can be
done locally ?

### Section 3.1.1

In `it is recommended to use N>100` should "RECOMMENDED" be used ?

### Section 6

Should network operators also drop packets containing the DEX at their peering
points ?

## Notes

This review is in the ["IETF Comments" Markdown format][ICMF], You can use the
[`ietf-comments` tool][ICT] to automatically convert this review into
individual GitHub issues.

[ICMF]: https://github.com/mnot/ietf-comments/blob/main/format.md
[ICT]: https://github.com/mnot/ietf-comments