Re: [tcpm] Genart last call review of draft-ietf-tcpm-rto-consider-14

[Martin Duke <[e-mail]>]

Stewart,

do we need more cycles for this, or is draft-15 sufficient to address your
concerns?

On Mon, Jun 8, 2020 at 12:52 PM Mark Allman <[e-mail]> wrote:

>
> Hi Stewart, et.al.!
>
> I just submitted a new version of rto-consider.  Please ask the
> datatracker for diffs between this and rev -14.  The highlights:
>
>   - The diffs with the last rev are here:
> https://tools.ietf.org/rfcdiff?difftype=--hwdiff&url2=draft-ietf-tcpm-rto-consider-15.txt
>
>   - All small comments addressed.
>
>   - I think we all agree that this is not a one-size-fits-all
>     situation.  Rather, this document is meant to be a default case.
>     So, the main action of this rev is to make that point more
>     clearly.  The first paragraph in the intro is new.  Also, there
>     are some more words fleshing out the context more in section 2.
>     In particular, more emphatically making the point that other
>     loss detectors are fine for specific cases.
>
>   - The first paragraph in the intro also makes clear we adopt the
>     loss == congestion model (as that is the conservative default,
>     not because it is always true).
>
>   - I made one other change that wasn't exactly called for, but
>     seems like an oversight.
>
>     Previously guideline (4) said loss MUST be taken as an
>     indication of congestion and some standard response taken.  But,
>     this guideline has an explicit exception for cases where we know
>     the loss was caused by some non-congestion event.  Guideline (3)
>     says you MUST backoff.  But, it did not have this exception for
>     cases where we can tell the cause.  But, I think based on the
>     spirit of (4), (3) should also have these words.  So, I added
>     them.
>
>     Also, I swapped (3) and (4) because it seemed more natural in
>     re-reading to first think about taking congestion action and
>     then dealing with backoff.  I think the ordering is a small
>     thing, but folks can yell and I'll put it back if there is
>     angst.
>
> Please take a look and let me know if this helps things along or
> not.
>
> allman
>