Depth-First Forwarding (DFF) in Unreliable Networks
RFC 6971

 
Document
Type RFC - Experimental (June 2013; Errata)
Was draft-cardenas-dff (individual)
Last updated 2014-03-28
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IESG state RFC 6971 (Experimental)
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Responsible AD Ted Lemon
IESG note Document Shepherd: Geoff Mulligan (geoff.ietf@mulligan.com)
Send notices to ulrich.herberg@us.fujitsu.com, alvaro.cardenas@me.com, smartnetpro-iwao_std@ml.css.fujitsu.com, m.dow@freescale.com, scespedes@icesi.edu.co, draft-cardenas-dff@ietf.org, geoff.ietf@mulligan.com
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Internet Engineering Task Force (IETF)                   U. Herberg, Ed.
Request for Comments: 6971                                       Fujitsu
Category: Experimental                                       A. Cardenas
ISSN: 2070-1721                            University of Texas at Dallas
                                                                 T. Iwao
                                                                 Fujitsu
                                                                  M. Dow
                                                               Freescale
                                                             S. Cespedes
                                                        Icesi University
                                                               June 2013

          Depth-First Forwarding (DFF) in Unreliable Networks

Abstract

   This document specifies the Depth-First Forwarding (DFF) protocol for
   IPv6 networks, a data-forwarding mechanism that can increase
   reliability of data delivery in networks with dynamic topology and/or
   lossy links.  The protocol operates entirely on the forwarding plane
   but may interact with the routing plane.  DFF forwards data packets
   using a mechanism similar to a "depth-first search" for the
   destination of a packet.  The routing plane may be informed of
   failures to deliver a packet or loops.  This document specifies the
   DFF mechanism both for IPv6 networks (as specified in RFC 2460) and
   for "mesh-under" Low-Power Wireless Personal Area Networks (LoWPANs),
   as specified in RFC 4944.  The design of DFF assumes that the
   underlying link layer provides means to detect if a packet has been
   successfully delivered to the Next Hop or not.  It is applicable for
   networks with little traffic and is used for unicast transmissions
   only.

Herberg, et al.               Experimental                      [Page 1]
RFC 6971                           DFF                         June 2013

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for examination, experimental implementation, and
   evaluation.

   This document defines an Experimental Protocol for the Internet
   community.  This document is a product of the Internet Engineering
   Task Force (IETF).  It represents the consensus of the IETF
   community.  It has received public review and has been approved for
   publication by the Internet Engineering Steering Group (IESG).  Not
   all documents approved by the IESG are a candidate for any level of
   Internet Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6971.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Motivation . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.2.  Experiments to Be Conducted  . . . . . . . . . . . . . . .  5
   2.  Notation and Terminology . . . . . . . . . . . . . . . . . . .  6
     2.1.  Notation . . . . . . . . . . . . . . . . . . . . . . . . .  6
     2.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  7
   3.  Applicability Statement  . . . . . . . . . . . . . . . . . . .  9
   4.  Protocol Overview and Functioning  . . . . . . . . . . . . . . 10
     4.1.  Overview of Information Sets . . . . . . . . . . . . . . . 11
     4.2.  Signaling Overview . . . . . . . . . . . . . . . . . . . . 11
   5.  Protocol Dependencies  . . . . . . . . . . . . . . . . . . . . 13

Herberg, et al.               Experimental                      [Page 2]
RFC 6971                           DFF                         June 2013

   6.  Information Sets . . . . . . . . . . . . . . . . . . . . . . . 13
     6.1.  Symmetric Neighbor List  . . . . . . . . . . . . . . . . . 13
     6.2.  Processed Set  . . . . . . . . . . . . . . . . . . . . . . 13
   7.  Packet Header Fields . . . . . . . . . . . . . . . . . . . . . 14
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