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

Hello Greg,

   Thanks for the review.

   We could add the text on RLD which you have suggested.

   For MSD, How about the below text in section "9.1 - Encapsulating Node
Responsibilities".

   The path computation needs to know the Maximum SID Depth (MSD)

   that can be imposed at the ingress node of a given SR path [RFC8664].

   This ensures that the label stack depth of a computed path does not

   exceed the maximum number of labels (i.e., MSD) the node is capable of
imposing.

   The MSD needs to include the MNA Sub-Stacks to be added.

Thanx,

Jags

On Mon, Aug 21, 2023 at 2:52 PM Greg Mirsky <gregimirsky@gmail.com> wrote:

> 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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>