Last Call Review of draft-ietf-bmwg-dcbench-terminology-16
review-ietf-bmwg-dcbench-terminology-16-opsdir-lc-chown-2017-06-21-00

I have reviewed this document as part of the Operational directorate's
ongoing effort to review all IETF documents being processed by the IESG.  These
comments were written with the intent of improving the operational aspects of
the IETF drafts. Comments that are not addressed in last call may be included
in AD reviews during the IESG review.  Document editors and WG chairs should
treat these comments just like any other last call comments.

The draft describes the definitions used for benchmarking network switches and
routers under test, where they would normally be deployed in a data centre
context, though its scope may be applicable to such devices deployed in broader
contexts.

Overall, the document is well written, and I believe it to be Ready with minor
nits.

General comment:

It would be interesting to see an Appendix with an example of a recorded test
using the language defined here.

Specific comments:

Section 1:

“- Low amount of buffer (in the Mb range)”
Change to MB?  (given later you refer to KB/MB/GB as the measurement unit for
buffers)

Section 2.1

Expand DUT on first use.

Section 3.1

Perhaps clarify relationship of Delay and Latency, since you focus on Latency
in the document and not Delay?

Last para, you say “If” here, but for Latency the FILO timestamp was a MUST in
Section 2?  This doesn’t seem consistent?

Expand PDV on first use.

Section 6.1.1

“1518 bytes frames” -> “1518 byte frames”

Section 7.1,

Why is ‘and’ in quotes here?  Not sure you can say the balance is defined by
goodput?  Do you mean that goodput is an indication of the balance?  For
standard TCP, a very small loss can have a dramatic effect on application
throughput.

The second para should follow the first, change “[RFC2647].  Goodput…” to
“[RFC2647], i.e., goodput…”

Section 7.3

I don’t understand how the example given correlates to G = S/Ft ?

There’s a few typos in this section; please re-check.