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

[Rakesh Gandhi <[e-mail]>]

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]> 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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