Hi, Going back to our discussions from last week, here is a draft that captures the proposed uses of fragmentation for tunneling and other purposes. It is called: "Fragmentation Revisited", and it offers an approach to limited use of fragmentation in a way that can begin to remove all barriers to supporting larger MTUs in the Internet, i.e., even with broken PMTUD, even with broken fragmentation/reassembly, and even with tunnels.
Think about that for a second. While we currently have burned-in numbers (576, 1280, 1500) that will never go away, the adoption of these techniques will ensure that there will never again need to be another burned-in number even as the Internet naturally grows to support larger packet sizes. We will then be able to say that the MTU of the Internet is "unlimited" or rather limited only by the constituent links, whatever they happen to be. Comments on the list would be welcome. Thanks - Fred fred.l.temp...@boeing.com --- From: i-d-announce-boun...@ietf.org [mailto:i-d-announce-boun...@ietf.org] On Behalf Of internet-dra...@ietf.org Sent: Tuesday, July 09, 2013 11:50 AM To: i-d-annou...@ietf.org Subject: I-D Action: draft-generic-6man-tunfrag-08.txt A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Fragmentation Revisited Author(s) : Fred L. Templin Filename : draft-generic-6man-tunfrag-08.txt Pages : 8 Date : 2013-07-09 Abstract: IP fragmentation has long been subject for scrutiny since the publication of "Fragmentation Considered Harmful" in 1987. This work cast fragmentation in a negative light that has persisted to the present day. However, the tone of the work failed to honor two principles of creative thinking: never say "always" and never say "never". This document discusses uses for fragmentation that apply both to the present day and moving forward into the future. 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-08 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-generic-6man-tunfrag-08 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ I-D-Announce mailing list i-d-annou...@ietf.org https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
