Attached please find a new draft that proposes a "Subnetwork Encapsulation and Adaptation Layer (SEAL)". This work goes a step beyond the sprite-mtu proposal, and addresses the tunnel MTU determination and duplicate packet detection problem spaces such as required for LISP, MANET, etc. But, it also draws on some profound concepts that were first proposed by others many years ago. (Please see Appendix A for an historical account and correct anything I may have mis-characterized.)
>From a bigger picture, the proposal provides a generalized abstraction for the carriage of IP over any subnetwork that connects routers, e.g., Mobile Ad-hoc Networks, enterprise networks, the interdomain routing core, etc. The proposal is particularly applicable for subnetworks that include links with diverse MTUs and L2 address formats, as well as for subnetworks that may incur packet duplication due to temporal routing loops, flooding, etc. Please review and provide comments, Fred [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, February 11, 2008 3:30 PM To: [EMAIL PROTECTED] Subject: I-D Action:draft-templin-seal-00.txt A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Subnetwork Encapsulation and Adaptation Layer Author(s) : F. Templin Filename : draft-templin-seal-00.txt Pages : 18 Date : 2008-02-11 Subnetworks connect routers within a bounded region, and may also connect to other networks including the Internet. These routers forward unicast and multicast packets over paths that span multiple IP- and/or sub-IP layer forwarding hops which may configure diverse Maximum Transmission Units (MTUs) and introduce packet duplication. This document specifies a Subnetwork Encapsulation and Adaptation Layer (SEAL) that supports simplified duplicate packet detection and accommodates links with diverse MTUs. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-templin-seal-00.txt To remove yourself from the I-D Announcement list, send a message to [EMAIL PROTECTED] with the word unsubscribe in the body of the message. You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce to change your subscription settings. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-templin-seal-00.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: [EMAIL PROTECTED] In the body type: "FILE /internet-drafts/draft-templin-seal-00.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
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