Last Call Review of draft-ietf-grow-large-communities-usage-06
review-ietf-grow-large-communities-usage-06-secdir-lc-wierenga-2017-04-27-00

Hi,

I have reviewed this document as part of the security directorate's ongoing
effort to review all IETF documents being processed by the IESG. These comments
were written primarily for the benefit of the security area directors. Document
editors and WG chairs should treat these comments just like any other last call
comments.

This document presents examples of how operators may use BGP large communities
to support some typical use-cases.

In general the document is well written and I have no major issues, and I
consider it: ready with nits (see below)

My one nit is that even though I think that the statement in the security
considerations "Operators should note the recommendations in Section
11(https://tools.ietf.org/html/draft-ietf-grow-large-communities-usage-06#section-11)
of BGP Operations and Security [RFC7454(https://tools.ietf.org/html/rfc7454)]”
is largely true, it would be useful if the authors would expand a little on
that, not being an expert in this field, I am wondering if the use-cases you
describe in one way or the other influence the RFC7454 considerations.

Klaas