Probabilistic Routing Protocol for Intermittently Connected Networks
RFC 6693
| Document | Type |
RFC - Experimental
(August 2012; No errata)
Was draft-irtf-dtnrg-prophet (dtnrg RG)
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IRTF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | IRTF state | (None) | |
| Consensus Boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | RFC 6693 (Experimental) | |
| Telechat date | |||
| Responsible AD | Adrian Farrel | ||
| IESG note | IRTF Submission. Stephen Farrell (stephen.farrell@cs.tcd.ie) is the document shepherd. | ||
| Send notices to | stephen.farrell@cs.tcd.ie | ||
Internet Research Task Force (IRTF) A. Lindgren
Request for Comments: 6693 SICS
Category: Experimental A. Doria
ISSN: 2070-1721 Technicalities
E. Davies
Folly Consulting
S. Grasic
Lulea University of Technology
August 2012
Probabilistic Routing Protocol for Intermittently Connected Networks
Abstract
This document is a product of the Delay Tolerant Networking Research
Group and has been reviewed by that group. No objections to its
publication as an RFC were raised.
This document defines PRoPHET, a Probabilistic Routing Protocol using
History of Encounters and Transitivity. PRoPHET is a variant of the
epidemic routing protocol for intermittently connected networks that
operates by pruning the epidemic distribution tree to minimize
resource usage while still attempting to achieve the best-case
routing capabilities of epidemic routing. It is intended for use in
sparse mesh networks where there is no guarantee that a fully
connected path between the source and destination exists at any time,
rendering traditional routing protocols unable to deliver messages
between hosts. These networks are examples of networks where there
is a disparity between the latency requirements of applications and
the capabilities of the underlying network (networks often referred
to as delay and disruption tolerant). The document presents an
architectural overview followed by the protocol specification.
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 Research Task
Force (IRTF). The IRTF publishes the results of Internet-related
research and development activities. These results might not be
suitable for deployment. This RFC represents the consensus of the
Delay Tolerant Networking Research Group of the Internet Research
Lindgren, et al. Experimental [Page 1]
RFC 6693 PRoPHET August 2012
Task Force (IRTF). Documents approved for publication by the IRSG
are not 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/rfc6693.
Copyright Notice
Copyright (c) 2012 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.
Lindgren, et al. Experimental [Page 2]
RFC 6693 PRoPHET August 2012
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Relation to the Delay-Tolerant Networking Architecture . 7
1.2. Applicability of the Protocol . . . . . . . . . . . . . . 8
1.3. PRoPHET as Compared to Regular Routing Protocols . . . . 10
1.4. Requirements Notation . . . . . . . . . . . . . . . . . . 11
2. Architecture . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1. PRoPHET . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1.1. Characteristic Time Interval . . . . . . . . . . . . 12
2.1.2. Delivery Predictability Calculation . . . . . . . . . 12
2.1.3. Optional Delivery Predictability Optimizations . . . 17
2.1.4. Forwarding Strategies and Queueing Policies . . . . . 18
2.2. Bundle Protocol Agent to Routing Agent Interface . . . . 19
2.3. PRoPHET Zone Gateways . . . . . . . . . . . . . . . . . . 20
2.4. Lower-Layer Requirements and Interface . . . . . . . . . 21
3. Protocol Overview . . . . . . . . . . . . . . . . . . . . . . 22
3.1. Neighbor Awareness . . . . . . . . . . . . . . . . . . . 22
3.2. Information Exchange Phase . . . . . . . . . . . . . . . 23
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