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[RRG] Subnetwork Encapsulation and Adaptation Layer (SEAL)



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
fred.l.templin@boeing.com

-----Original Message-----
From: Internet-Drafts@ietf.org [mailto:Internet-Drafts@ietf.org] 
Sent: Monday, February 11, 2008 3:30 PM
To: i-d-announce@ietf.org
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

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