[OPSAWG]Re: Paul Wouters' Discuss on draft-ietf-opsawg-ipfix-tcpo-v6eh-17: (with DISCUSS)

[[e-mail]]

Hi Mahesh,

An implementer that looks in 5102 will be forwarded to 7012 because there is appropriate metadata in 5102 that says that spec is superseded/obsoleted by 7012. Like any other RFC with that metadata, there is no note that explicits which aspects is obsoleted (or updated in case of updated-by). Readers have to look into 7012 which clearly and explicitly list the changes and how the registry should be handled in the future.

I never saw an update to an obsoleted RFC. IMO, it does not make sense to go that way.

We can add a note with a summary to help readers navigate with all these.

Cheers,
Med

De : Mahesh Jethanandani <[e-mail]>
Envoyé : jeudi 11 juillet 2024 18:27
À : BOUCADAIR Mohamed INNOV/NET <[e-mail]>
Cc : Paul Wouters <[e-mail]>; The IESG <[e-mail]>; [e-mail]; opsawg-chairs <[e-mail]>; [e-mail]
Objet : Re: [OPSAWG]Re: Paul Wouters' Discuss on draft-ietf-opsawg-ipfix-tcpo-v6eh-17: (with DISCUSS)


Hi Med,

This DISCUSS and the COMMENT from John came up again in the telechat earlier today.

This is clearly tripped up more than one person in their review process, so it is quite imaginable what it would do to an implementor. I do not have a good solution, and I am hoping this discussion comes up with a solution that is better than status quo.


On Jul 10, 2024, at 11:14 PM, [e-mail]<mailto:[e-mail]> wrote:

Hi Paul,

I have already clarified this point in a reply to John's comment.

Let me clarify again:

* Both ipv6ExtensionHeaders and tcpOptions were initially defined in RFC 5102
* RFC 7012 obsoleted RFC 5102 and declared that:

  ## The IANA registry is for now the authoritative reference for these IEs:

  "[IANA-IPFIX] is now the normative reference for IPFIX Information
  Elements.  When [RFC5102] was published, it defined, in its
  Section 5, the initial contents of that registry."

  ## RFC 5102 provides the initial content of the registry

  "This information model is maintained as the IANA "IPFIX
  Information Elements" registry, the initial contents of which were
  defined by RFC 5102."

  or

  "The IANA "IPFIX Information Elements" registry [IANA-IPFIX] is the
  current complete reference for IPFIX Information Elements.  The
  initial values for this registry were provided by [RFC5102]."

The move to an IANA registry as the authoritative reference for the IEs is clearly the source of the problem. Is there something in the Updates to RFC 5102 that indicates that the registry has moved to IANA? Or do folks have to read RFC 7012 to realize that? Would the registry pointing to RFC 5102, which would in turn point to RFC 7012 help?



* We can't update 7012 because:

  "Information Element definitions have been removed, as the reference
    for these is now [IANA-IPFIX]; a historical note on categorizations
    of Information Elements as defined in [RFC5102] has been retained
    in Section 5."

This is the reason we:

* cite [IANA-IPFIX] when we first mentioned ipv6ExtensionHeaders and tcpOptions in the doc.
* list [IANA-IPFIX] as normative

But that may not be enough to satisfy the question that Paul is asking. Which RFC is being updated/obsoleted with the move to deprecate the ipv6ExtensionHeaders and tcpOptions IE. Does it make sense to update RFC 5102 so folks know to reference this document, even if it is obsoleted by RFC 7102?

Cheers



Cheers,
Med


-----Message d'origine-----
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DISCUSS:
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       This specification deprecates the ipv6ExtensionHeaders
IPFIX IE
       in favor of the new IEs defined in this document.

I don't see which RFC those were in, because this document does
not
Update: or Obsolete: the RFC that defined the
ipv6ExtensionHeaders IPFIX IE


       This specification deprecates the tcpOptions IE

Same here.




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