Greetings. I have reviewed draft-irtf-rrg-recommendation-10.txt as part of the 
IRSG review process, described at 
<http://trac.tools.ietf.org/group/irtf/trac/wiki/IRTF-RFCs>. That page says 
"The purpose of the IRSG review is to ensure consistent editorial and technical 
quality for IRTF publications."

This document definitely meets a high standard for editorial and technical 
quality. There are a few issue that I (as a definite outsider to routing in 
general, much less next-generation routing in specific) think could be usefully 
addressed before publication. Please take these suggestions as proposals for 
improvements, not requirements.

There is no description of who wrote the rebuttals and counterpoints. I don't 
think that names need to be used, but a description in the introduction of the 
process used to collect rebuttals and counterpoints would give useful context 
to the reader.

Two of the proposals, NOL (Section 6) and 2-phased mapping (Section 9), have no 
references, which means that the entire technical description of the proposal 
is contained in this document. However, neither of those were particularly 
clear and concise, as compared to most of the rest of the proposals. Having an 
explanation of why they discussed here without further reference would be 
useful to understand where they stand in the pantheon of routing proposals.

Many of the Internet Drafts in the references are long-expired, including one 
of the two normative references. This will make for an interesting conversation 
with the RFC Editor.

This last recommendation is obviously the trickiest one, and it may be a touchy 
subject. From reading this document without reading the mailing list, I have 
absolutely zero idea why Section 17, the recommendations, exists. Section 1.1 
says:
   The group did not reach consensus on this
   recommendation, thus the recommendation reflects the decision of the
   co-chairs.  The group did reach consensus that the overall document
   should be published.
This can be (mis)interpreted many ways: 
  - The RG could not come to consensus on recommendations, so the co-chairs are 
reporting the strongest agreement they could find.
  - The RG could not come to consensus on recommendations, so the co-chairs are 
taking advantage of this and saying what the two of them like.
  - The RG only wanted the overall document without recommendations published, 
but the co-chairs thought that didn't go far enough to be useful, so they added 
some recommendations almost as a placeholder.
  - The IETF demands recommendations, and we couldn't come to consensus, so we 
put some in, but you can ignore them because they aren't really RG consensus.
  - One of the three recommendations listed is co-authored by one of the 
co-chairs, so she must have insisted that it be listed and consensus be damned.
  - It's all dumb IETF politics! Run away!
Many of those interpretations are unhelpful and do a disservice to the 
obviously large amount of work in the RG that went into this document. There 
hopefully would be a clear explanation of why the co-chairs get to give their 
recommendations when there was no RG consensus, and hopefully also why there 
was not consensus in the RG. Short of being able to add that, please strongly 
consider replacing the section with a few paragraphs about the lack of 
consensus on recommendations and an apology for not being able to give 
recommendations.

As I said, I recognize that this last bit is tricky, and there are probably 
good reasons for the document being the way it is now. However, that doesn't 
help the reader who is not part of the RG, much less the reader 20 years from 
now who wants to know why the IETF chose the new routing architectures that it 
did. If the document is published without context about the recommendations, 
the document will lose a fair amount of its long-term usefulness.

Please let me know if you have any questions.

--Paul Hoffman, Director
--VPN Consortium
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