Last Call Review of draft-wu-l3sm-rfc8049bis-07
review-wu-l3sm-rfc8049bis-07-genart-lc-arkko-2017-10-25-00

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Document: draft-wu-l3sm-rfc8049bis-??
Reviewer: Jari Arkko
Review Date: 2017-10-25
IETF LC End Date: 2017-10-11
IESG Telechat date: 2017-10-26

Summary: I'm not an expert on YANG *at all*. And not an expert on the topic in
question either. And I had far too little time to spend on this long document.
But as far as the textual content of the document goes, it seems reasonable. I
have a difficulty in assessing how complete and implementable this model is
however. Are there implementations?

I did enjoy the classification of Internet connectivity as a special case of
cloud service :-) You may be onto something.

I did observe a couple of question marks or issues that probably deserve some
thought or small revisions.

Major issues: -

Minor issues:

I'm not sure I fully understand the need for "SP MUST honour <requirement>"
language in the document. Are there parts of the described model that they SP
is *not* required to honour? Other than the explicit strict true/false
settings? And in any case, sizeable networks are likely to have issues that
might require negotiation/human involvement.

I don't understand how 6.9.1 can say there is no authentication support but
then 6.9.2 (encryption) talks about authentication keys. I'd suggest some
rethinking or at least clarification might be needed here.

In the security considerations, I would note that if these models are used not
merely for creation of networks, but also their modification, the consequences
of inadvertent or malicious modifications can severe and network wide. Perhaps
that could be discussed.

Nits/editorial comments:

Section 6.12.2. s/fragmented/fragment it/