[mpls] Re: draft-ietf-mpls-mna-ioam-07 early Perfmetrdir review

[Giuseppe Fioccola <[e-mail]>]

Thank you Rakesh for considering my suggestions.
The proposed changes look good to me.

Regards,

Giuseppe

From: Rakesh Gandhi <[e-mail]>
Sent: Tuesday, July 28, 2026 9:04 PM
To: Giuseppe Fioccola <[e-mail]>
Cc: [e-mail]; [e-mail]; [e-mail]
Subject: Re: [mpls] draft-ietf-mpls-mna-ioam-07 early Perfmetrdir review

Hi Giuseppe,

Thank you for the detailed review.

Please see replies inline with <RG>...

On Tue, Jul 28, 2026 at 9:31 AM Giuseppe Fioccola via Datatracker <[e-mail]<mailto:[e-mail]>> wrote:
Document: draft-ietf-mpls-mna-ioam
Title: Supporting In Situ Operations, Administration, and Maintenance Using
MPLS Network Actions Reviewer: Giuseppe Fioccola Review result: Has Issues

This document specifies how to employ MNA (MPLS Network Actions) mechanism to
collect and transport IOAM and IOAM-DEX data.

>From a PERFMETRDIR point of view, the performance measurement method is defined
quite clearly. But, I have general comments for your consideration:

- Section 3 says that the procedure to carry IOAM using the MNA solution can be
applied to user traffic packets and active measurement test packets. In this
regard, I would also add a reference to
draft-ietf-ippm-on-path-active-measurements, where this combination is
generalized for all the active tools.

<RG> Added following sentence:

   [I-D.ietf-ippm-on-path-active-measurements] also

   describes active measurement methods where the mechanisms defined in

   this document using MNA can be used to carry IOAM Option-Types for

   on-path telemetry.


- In section 4.1, the first sentence is not very clear. I would better clarify
whether Figure 1 shows an example of Post-Stack MPLS Header Carrying IOAM and
IOAM-DEX.

<RG> Updated as follows:


   The presence of a corresponding Post-Stack MPLS Header (PSMH) is

   indicated using the P flag in the NAS as defined in

   [I-D.ietf-mpls-mna-ps-hdr].  An example of a NAS and the

   corresponding PSMH carrying IOAM and IOAM-DEX Option-Types is shown

   in Figure 1.


- In section 4.1, 4.1.1, 4.1.1.1, 4.2 and 4.2.1 there are several fields (e.g.
TC, S, TTL) that are not described. Maybe, you can simply add them to the
Acronyms of section 2.1 or refer to draft-ietf-mpls-mna-ps-hdr.

<RG> Added in the Acronym table with the references.


- Section 5 could also be merged with section 6 on Operational Considerations
since there are many considerations related to deployment, operations, and
management.

<RG> Added following sentence in Section 6 Operational Considerations.

   Additional operational considerations are described in Section 5 for

   deploying IOAM and IOAM-DEX in MPLS networks.

Thanks,

Rakesh (for authors)




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