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Re: [Spud] Last Call: <draft-ietf-tsvwg-rfc5405bis-13.txt> (UDP Usage Guidelines) to Best Current Practice

Jana Iyengar <jri@google.com> Wed, 08 June 2016 05:59 UTC

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From: Jana Iyengar <jri@google.com>
Date: Tue, 07 Jun 2016 22:59:19 -0700
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To: Tom Herbert <tom@herbertland.com>
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Cc: tsvwg WG <tsvwg@ietf.org>, draft-ietf-tsvwg-rfc5405bis@ietf.org, tsvwg-chairs@ietf.org, spud <spud@ietf.org>, Brian Trammell <ietf@trammell.ch>, quic@ietf.org, ietf@ietf.org
Subject: Re: [Spud] Last Call: <draft-ietf-tsvwg-rfc5405bis-13.txt> (UDP Usage Guidelines) to Best Current Practice
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Just adding my 2c if this still isn't too late: I agree with Brian that the
wording in the draft seems limiting. His suggested wording does make things
better, but there still is the contradiction that Tom pointed out:

I would agree, this paragraph also seems a little self
> contradictory.There is an acknowledgment that "middleboxes that only
> support TCP and UDP are not rare", but then the next sentence
> recommends the use of several other protocols besides UDP and TCP. If
> I put these two together, the only congested controlled protocol that
> is recommended and expected to work on the Internet is TCP.


This caught my attention as well. As it stands, the recommendation in this
paragraph is very unclear.

What exactly is the goal here? If it is to ensure that the recommendations
allow for deployable protocols, then UDP-based ones must be allowed.
Otherwise, the recommendation seems to be to only use TCP. I don't think
that was the intent... but then what is the intent in this paragraph?

- jana

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