ECN....Re: Fuzzy-layering and its suggestion

"Jim Fleming" <JimFleming@ameritech.net> Fri, 06 September 2002 06:02 UTC

Received: from loki.ietf.org (loki [10.27.2.29]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id CAA21129; Fri, 6 Sep 2002 02:02:55 -0400 (EDT)
Received: (from adm@localhost) by loki.ietf.org (8.9.1b+Sun/8.9.1) id CAA07949 for ietf-outbound.10@loki.ietf.org; Fri, 6 Sep 2002 02:04:01 -0400 (EDT)
Received: from ietf.org (odin.ietf.org [10.27.2.28]) by loki.ietf.org (8.9.1b+Sun/8.9.1) with ESMTP id CAA07925 for <ietf-mainout@loki.ietf.org>; Fri, 6 Sep 2002 02:03:42 -0400 (EDT)
Received: by ietf.org (8.9.1a/8.9.1a) id CAA20045 for ietf-mainout@loki.ietf.org; Fri, 6 Sep 2002 02:02:05 -0400 (EDT)
X-Authentication-Warning: ietf.org: majordom set sender to owner-ietf@ietf.org using -f
Received: from mail1-0.chcgil.ameritech.net (mail1-0.chcgil.ameritech.net [206.141.192.68]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id CAA19988 for <ietf@ietf.org>; Fri, 6 Sep 2002 02:02:00 -0400 (EDT)
Received: from repligate ([64.108.202.122]) by mail1-0.chcgil.ameritech.net (InterMail vM.4.01.02.17 201-229-119) with SMTP id <20020906060336.SMPM11881.mail1-0.chcgil.ameritech.net@repligate>; Fri, 6 Sep 2002 01:03:36 -0500
Message-ID: <03ad01c2556b$2e99d3d0$8c56fea9@repligate>
From: Jim Fleming <JimFleming@ameritech.net>
To: Jason Gao <jag@kinet.com.cn>
Cc: ietf@ietf.org
References: <5.1.1.6.2.20020905134955.041f06d8@mira-sjcm-4.cisco.com>
Subject: ECN....Re: Fuzzy-layering and its suggestion
Date: Fri, 06 Sep 2002 01:03:54 -0500
MIME-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2600.0000
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
Content-Transfer-Encoding: 7bit
Sender: owner-ietf@ietf.org
Precedence: bulk
Content-Transfer-Encoding: 7bit
X-Loop: ietf@ietf.org
Content-Transfer-Encoding: 7bit

----- Original Message ----- 
From: "Fred Baker" <fred@cisco.com>
To: "Jason Gao" <jag@kinet.com.cn>
Cc: <ietf@ietf.org>
Sent: Thursday, September 05, 2002 3:58 PM
Subject: Re: Fuzzy-layering and its suggestion


> At 09:11 PM 9/5/2002 +0800, Jason Gao wrote:
> >--- TCP with ECN extension
> >
> >has already been a practice of fuzzy-layering.
> >
> >TCP in the end system and IP in the intermediate systems share the two ECN 
> >bits in the IP header.
> 
> that is incorrect. First off, IP also is found in the end system, and uses 
> the ECN bits.
> 

Attempts to redefine the IPv4 Header to block clear paths to using all 160 bits in the IPv4 Header
for extended addressing and routing have been political in nature, not technical.

All 8-bits of the TOS field are available for routing. There are no ECN bits. Look in the code.
http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=tos+routing

The 8-bit TOS field can be split into two 4-bit fields to add 4 extended addressing bits to
the 32-bit addressing. You might view this as saying all one-story buildings now have 15
more floors above them for expansion. Yes, there are special attributes about the cases
where TOS=0*x or *0x, but those are easy to note and handle as the transition is made.


Jim Fleming
2002:[IPv4]:000X:03DB:...IPv8 is closer than you think...
http://ipv8.dyndns.tv
http://ipv8.yi.org
http://ipv8.dyns.cx
http://ipv8.no-ip.com
http://ipv8.no-ip.org
http://ipv8.no-ip.biz
http://ipv8.no-ip.info
http://www.iana.org/assignments/ipv4-address-space
http://www.ntia.doc.gov/ntiahome/domainname/130dftmail/unir.txt