IETF Last Call Review of draft-ietf-tsvwg-nqb-29
review-ietf-tsvwg-nqb-29-opsdir-lc-fioccola-2025-06-17-00

This document specifies a Non-Queue-Building Per-Hop Behavior (NQB PHB) in
order to provide a separate queue for application-limited traffic microflows,
allowing to avoid the queuing delays and losses caused by other traffic. This
document has been developed primarily for access network segments and
recommends a specific DSCP to identify NQB microflows. It also updates RFC 8325.

From an OPSDIR point of view, it is good to have Section 4, 6 and 7. Even if
the information is spread among these different sections, they provide guidance
for networks that forward traffic marked with the NQB DSCP and for networks
that do not currently support the NQB PHB.

I think that the document has a clear scope and is almost ready for
publication, but I have a couple of suggestions:

- I think that section 5 on NQB PHB Requirements could be moved before section
4. Also, since section 4.1 explains NQB Sender Requirements, it can be placed
under section 5.

- To improve structure and clarity, you can probably consider to merge section
4 and section 6 since some information is shared such as the configuration
recommendations. A whole section on the Operational and Management aspects as
result of the merge would work better in my opinion.