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Shepherd writeup

(1) What type of RFC is being requested (BCP, Proposed Standard, Internet
Standard, Informational, Experimental, or Historic)? Why is this the proper
type of RFC? Is this type of RFC indicated in the title page header?

Standards Track.

This is appropriate because the document describes a YANG Data model.

(2) The IESG approval announcement includes a Document Announcement Write-Up.
Please provide such a Document Announcement Write-Up. Recent examples can be
found in the "Action" announcements for approved documents. The approval
announcement contains the following sections:

Technical Summary:

This document presents a base YANG Data model for connection oriented OAM
protocols.  It provides a technology-independent abstraction of  key OAM
constructs for such protocols.  The model presented here can  be extended to
include technology specific details.  This guarantees  uniformity in the
management of OAM protocols and provides support  for nested OAM workflows
(i.e., performing OAM functions at different  levels through a unified

Working Group Summary:

The WG took some time to reach consensus, but finally did after in-person
working sessions.

Document Quality:

Are there existing implementations of the protocol?

Huawei has an implementation based on an  early version of
draft-ietf-lime-yang-connection-oriented-oam-model-01, which has been
demonstrated in one past IETF meeting. Huawei  also has a TRILL OAM model
implementation which is extension of CO model defined in this document.

Have a significant number of vendors indicated their plan to implement the

To my knowledge, one, possibly two.

 Are there any reviewers that merit special mention as having done a thorough
 review, e.g., one that resulted in important changes or a conclusion that the
 document had no substantive issues?

 Greg Mirsky did significant reviews and offered many comments.

If there was a MIB Doctor, Media Type or other expert review, what was its
course (briefly)? In the case of a Media Type review, on what date was the
request posted?

Carl Moeburg is doing the Yang Doctor review.


Who is the Document Shepherd? Who is the Responsible Area Director?

Ron Bonica is the document shepherd. Benoit Claise is the responsible AD

(3) Briefly describe the review of this document that was performed by the
Document Shepherd. If this version of the document is not ready for
publication, please explain why the document is being forwarded to the IESG.

I have read every version of this document and believe that it is ready for

(4) Does the document Shepherd have any concerns about the depth or breadth of
the reviews that have been performed?


(5) Do portions of the document need review from a particular or from broader
perspective, e.g., security, operational complexity, AAA, DNS, DHCP, XML, or
internationalization? If so, describe the review that took place.

I recommend GENART and OPS-AREA reviews before this documents goes to IETF last

The document was reviewed by the YANG Doctors fairly early on and is currently
being reviewed again.

(6) Describe any specific concerns or issues that the Document Shepherd has
with this document that the Responsible Area Director and/or the IESG should be
aware of? For example, perhaps he or she is uncomfortable with certain parts of
the document, or has concerns whether there really is a need for it. In any
event, if the WG has discussed those issues and has indicated that it still
wishes to advance the document, detail those concerns here.

No issues.

(7) Has each author confirmed that any and all appropriate IPR disclosures
required for full conformance with the provisions of BCP 78 and BCP 79 have
already been filed. If not, explain why?

All of the authors and contributors have responded to the IPR query except. 
None are aware of any IPR.

(8) Has an IPR disclosure been filed that references this document? If so,
summarize any WG discussion and conclusion regarding the IPR disclosures.


(9) How solid is the WG consensus behind this document? Does it represent the
strong concurrence of a few individuals, with others being silent, or does the
WG as a whole understand and agree with it?

Fairly solid consensus, with one or two people raising objections. Over time,
these issues were resolved.

(10) Has anyone threatened an appeal or otherwise indicated extreme discontent?
If so, please summarise the areas of conflict in separate email messages to the
Responsible Area Director. (It should be in a separate email because this
questionnaire is publicly available.)


(11) Identify any ID nits the Document Shepherd has found in this document.
(See and the Internet-Drafts Checklist).
Boilerplate checks are not enough; this check needs to be thorough.

The nit checker complains about weird spacing and lines too long. These
problems can probably be fixed by the RFC editor when the document progresses.

(12) Describe how the document meets any required formal review criteria, such
as the MIB Doctor, media type, and URI type reviews.

The document is being reviewed by YANG doctors.

(13) Have all references within this document been identified as either
normative or informative?


(14) Are there normative references to documents that are not ready for
advancement or are otherwise in an unclear state? If such normative references
exist, what is the plan for their completion?


(15) Are there downward normative references references (see RFC 3967)? If so,
list these downward references to support the Area Director in the Last Call


(16) Will publication of this document change the status of any existing RFCs?
Are those RFCs listed on the title page header, listed in the abstract, and
discussed in the introduction? If the RFCs are not listed in the Abstract and
Introduction, explain why, and point to the part of the document where the
relationship of this document to the other RFCs is discussed. If this
information is not in the document, explain why the WG considers it unnecessary.


(17) Describe the Document Shepherd's review of the IANA considerations
section, especially with regard to its consistency with the body of the
document. Confirm that all protocol extensions that the document makes are
associated with the appropriate reservations in IANA registries. Confirm that
any referenced IANA registries have been clearly identified. Confirm that newly
created IANA registries include a detailed specification of the initial
contents for the registry, that allocations procedures for future registrations
are defined, and a reasonable name for the new registry has been suggested (see
RFC 5226).

(18) List any new IANA registries that require Expert Review for future
allocations. Provide any public guidance that the IESG would find useful in
selecting the IANA Experts for these new registries.


(19) Describe reviews and automated checks performed by the Document Shepherd
to validate sections of the document written in a formal language, such as XML
code, BNF rules, MIB definitions, etc.

This model was checked for syntactic correctness by the YANG compiler that is
built into the data tracker