Re: [Detnet] Robert Wilton's No Objection on draft-ietf-detnet-ip-oam-12: (with COMMENT)

["Rob Wilton (rwilton)" <[e-mail]>]

Hi Greg,

Please see inline RW>.

From: Greg Mirsky <[e-mail]>
Date: Tuesday, 13 February 2024 at 17:13
To: Rob Wilton (rwilton) <[e-mail]>
Cc: The IESG <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>, janos.farkas@ericsson<mailto:janos.farkas@ericsson>.com <[e-mail]>
Subject: Re: Robert Wilton’s No Objection on draft-ietf-detnet-ip-oam-12: (with COMMENT)
Hi Rob,
thank you for your support of this work and thoughtful comments. Please find my notes below tagged by GIM>>.

Regards,
Greg

On Tue, Feb 13, 2024 at 5:47 AM Robert Wilton via Datatracker <[e-mail]<mailto:[e-mail]>> wrote:
Robert Wilton has entered the following ballot position for
draft-ietf-detnet-ip-oam-12: No Objection

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COMMENT:
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Hi,

Thanks for this document.  Just a few minor comments.

Minor level comments:

(1) p 5, sec 3.4.  Active OAM Using GRE-in-UDP Encapsulation

   [RFC8086] has defined the method of encapsulating GRE (Generic
   Routing Encapsulation) headers in UDP.  GRE-in-UDP encapsulation can
   be used for IP DetNet OAM as it eases the task of mapping an OAM test
   session to a particular IP DetNet flow that is identified by N-tuple.
   Matching a GRE-in-UDP tunnel to the monitored IP DetNet flow enables
   the use of Y.1731/G.8013 [ITU-T.1731] as a comprehensive toolset of
   OAM.  The Protocol Type field in GRE header must be set to 0x8902
   assigned by IANA to IEEE 802.1ag Connectivity Fault Management (CFM)
   Protocol / ITU-T Recommendation Y.1731.  Y.1731/G.8013 supports
   necessary for IP DetNet OAM functions, i.e., continuity check, one-
   way packet loss and packet delay measurement.

A few minor comments on this paragraph:

1. The section title is about “Active OAM Using GRE-in-UDP Encapsulation” but
the text seems to be more specifically referring to Y.1731.  Should the title
of the section be refined?
GIM>> Would “The Application of Y.1731/G.8013 Using GRE-in-UDP Encapsulation” work?

RW>
Yes.

For the last sentence, perhaps consider rewording to:

Y.1731/G.8013 supports the necessary functions required for IP DetNet OAM, i.e., continuity check, one-
   way packet loss and packet delay measurement.

Regards,
Rob



2. Perhaps "set to 0x8902 assigned" => "set to 0x8902, assigned"
GIM>> Thank you; done

3. The last sentence of the paragraph doesn't scan properly.

(2) p 6, sec 7.  Acknowledgment

   TBA

Just a note that this is still blank, and you may want to remove this section
if you don't wish to acknowledge anyone.
GIM>> Removed the section

Regards,
Rob