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New draft: "IPv6 Source Fragmentation for Link Adaptation Avoidance"

"Templin, Fred L" <Fred.L.Templin@boeing.com> Thu, 05 July 2012 18:30 UTC

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From: "Templin, Fred L" <Fred.L.Templin@boeing.com>
To: "ipv6@ietf.org" <ipv6@ietf.org>
Date: Thu, 05 Jul 2012 11:30:57 -0700
Subject: New draft: "IPv6 Source Fragmentation for Link Adaptation Avoidance"
Thread-Topic: New draft: "IPv6 Source Fragmentation for Link Adaptation Avoidance"
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Hello,

I have posted a new draft that calls for an update to RFC2460.
The document proposes to enlist the support of IPv6 hosts in
offloading the burden carried by links that must perform
link-specific fragmentation/reassembly per RFC2460, Section 5:

   "IPv6 requires that every link in the internet have an MTU of 1280
   octets or greater.  On any link that cannot convey a 1280-octet
   packet in one piece, link-specific fragmentation and reassembly must
   be provided at a layer below IPv6."

The draft announcement appears below. Please review and send
comments to the list.

Fred
fred.l.templin@boeing.com

---
A New Internet-Draft is available from the on-line Internet-Drafts directories.


	Title           : IPv6 Source Fragmentation for Link Adaptation Avoidance
	Author(s)       : Fred L. Templin
	Filename        : draft-generic-6man-tunfrag-02.txt
	Pages           : 5
	Date            : 2012-07-05

Abstract:
   IPv6 intentionally deprecates fragmentation by routers in the
   network.  Instead, links with restricting MTUs must either drop each
   too-large packet and return an ICMP Packet Too Big message or perform
   link-specific fragmentation (also known as "link adaptation") at a
   layer below IPv6.  This latter category of links is often
   performance-challenged to accommodate steady-state link-specific
   fragmentation to the point that it would be highly desirable to push
   the fragmentation burden back to the IPv6 source.  A common case that
   exhibits these link characteristics is seen for IPv6-within-IP
   tunnels.  This document therefore proposes an update to the base IPv6
   specification to support link adaptation avoidance.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-generic-6man-tunfrag

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-generic-6man-tunfrag-02

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=draft-generic-6man-tunfrag-02


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

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