I wrote this because of a discussion that happened during behave at the
last IETF meeting in Vancouver. There was a presentation in the behave
working group on NAT ALG for SCTP - when run natively over IP - and I
found the entire conversation surreal. The entire problem would have
been moot if SCTP had been designed to run over UDP and not IP.
So apparently its not obvious to everyone that you cannot design
protocols natively ontop of IP.
-Jonathan R.
Spencer Dawkins wrote:
Hi, Hannes,
I can't answer for Jonathan, but I wondered the same thing, and decided that
the answer was probably one of
- "well, if we all know this, what are we doing differently now that we know
it?", or
- "the GOOD news is that the wasp waist-hourglass is no longer HTTP"
[RFC3205], or
- "the GREAT news is that the wasp waist-hourglass isn't Skype (yet)".
Not sure which, of course :-)
Thanks,
Spencer, with apologies to Keith Moore [RFC3205}
Hi Jonathan,
Hi all,
I read through the document and was not quite sure why you wrote it.
Everyone knows this already.
Ciao
Hannes
-------- Original Message --------
Subject: I-D Action:draft-rosenberg-internet-waist-hourglass-00.txt
Date: Mon, 11 Feb 2008 19:30:01 -0800 (PST)
From: Internet-Drafts(_at_)ietf(_dot_)org
Reply-To: internet-drafts(_at_)ietf(_dot_)org
To: i-d-announce(_at_)ietf(_dot_)org
A New Internet-Draft is available from the on-line Internet-Drafts
directories.
Title : UDP and TCP as the New Waist of the Internet Hourglass
Author(s) : J. Rosenberg
Filename : draft-rosenberg-internet-waist-hourglass-00.txt
Pages : 8
Date : 2008-02-11
One of the fundamental design principles of the Internet is that IP
represents a common intermediate protocol layer, linking together a
variety of link layer technologies underneath with a large number of
applications on top. When drawn graphically, this can be show as an
hourglass with IP in the middle. The preponderence of NATs and
firewalls in the Internet has changed this reality, such that UDP and
TCP are now the waist of the hourglass. This document discusses this
change and describes its implications for protocol and application
design.
A URL for this Internet-Draft is:
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--
Jonathan D. Rosenberg, Ph.D. 499 Thornall St.
Cisco Fellow Edison, NJ 08837
Cisco, Voice Technology Group
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