Re: [mpls] draft-ietf-mpls-mna-hdr draft updates

Greg Mirsky <gregimirsky@gmail.com> Mon, 21 August 2023 18:52 UTC

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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 21 Aug 2023 11:52:26 -0700
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To: "Jaganbabu Rajamanickam (jrajaman)" <jrajaman=40cisco.com@dmarc.ietf.org>
Cc: Jaganbabu Rajamanickam <jaganbaburietf@gmail.com>, mpls <mpls@ietf.org>, mpls-chairs <mpls-chairs@ietf.org>, "draft-ietf-mpls-mna-hdr@ietf.org" <draft-ietf-mpls-mna-hdr@ietf.org>
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Subject: Re: [mpls] draft-ietf-mpls-mna-hdr draft updates
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Hi Jags,
thank you for sharing the updates. I have a couple of questions about RLD.

   - The updated draft presents RLD as being a newly defined term
   introduced in this draft. Although RLD might be related to ERLD-MSD defined
   in RFC 9088, that is okay if the draft provides a clear definition of the
   new term. Section 7, in my understanding, describes the usage of RLD but is
   rather short on defining it. Would the following text be acceptable:

Readable Label Depth is defined as the number of labels, starting from the
top of the stack, a router can read in an MPLS packet received on its
incoming interface(s).

   - It looks like RLD is presented as a system-wide parameter. I think
   that it might be more accurate to consider RLD per ingress interface (see
   the proposed definition of RLD above).

Also, do the Editors find it helpful to note that the Base MPLS Imposition
MSD affects the imposition of the label stack that includes MNA?

Regards,
Greg

On Mon, Aug 21, 2023 at 10:29 AM Jaganbabu Rajamanickam (jrajaman)
<jrajaman=40cisco.com@dmarc.ietf.org> wrote:

> Hello Everyone,
>
>    Attaching new attachments and resending.
>
>
>
> Thanx,
>
> Jags
>
>
>
> *From: *Jaganbabu Rajamanickam <jaganbaburietf@gmail.com>
> *Date: *Monday, August 21, 2023 at 1:21 PM
> *To: *mpls <mpls@ietf.org>
> *Cc: *mpls-chairs <mpls-chairs@ietf.org>, draft-ietf-mpls-mna-hdr@ietf.org
> <draft-ietf-mpls-mna-hdr@ietf.org>
> *Subject: *draft-ietf-mpls-mna-hdr draft updates
>
> Hello Everyone,
>
>    Based on the WG discussion and comments, we have updated the draft. I
> am attaching the latest draft and the diff before publishing. Please take a
> look and provide feedback.
>
>
>
> Below are the updates made to the draft.
>
>
>
>    1. Define and use term RLD (Readable Label Depth)
>    2. Add MNA Label in Figure 1
>    3. Packet format to show bits 0 – 9
>    4. Reserved bits are marked as MUST be zero and ignored on receipt
>    5. Section 7 to clarify PHP node behaviour
>    6. Section 7.1 added on “actions on node pushing labels”
>    7. Deleted stale section of 13.3 on “Network Actions Flags with
>    Ancillary Data”
>    8. Designated Editors
>    9. Informational References (both moved from normative)
>
>
>
>
>
> Thanx,
>
> Jags
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