Depth-First Forwarding (DFF) in Unreliable Networks
RFC 6971
| Document | Type |
RFC - Experimental
(June 2013; Errata)
Was draft-cardenas-dff (individual)
|
|
|---|---|---|---|
| Last updated | 2020-01-21 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized with errata bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6971 (Experimental) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Ted Lemon | ||
| IESG note | Document Shepherd: Geoff Mulligan (geoff.ietf@mulligan.com) | ||
| Send notices to | alvaro.cardenas@me.com, geoff.ietf@mulligan.com | ||
| IANA | IANA review state | IANA - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
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
8. Protocol Parameters . . . . . . . . . . . . . . . . . . . . . 15
9. Data Packet Generation and Processing . . . . . . . . . . . . 15
9.1. Data Packets Entering the DFF Routing Domain . . . . . . . 16
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