Multipath Extension for the Optimized Link State Routing Protocol Version 2 (OLSRv2)
RFC 8218

Document Type RFC - Experimental (August 2017; No errata)
Last updated 2017-08-24
Replaces draft-yi-manet-olsrv2-multipath
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Document shepherd Stan Ratliff
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IESG IESG state RFC 8218 (Experimental)
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Responsible AD Alvaro Retana
Send notices to "Stan Ratliff" <sratliff@idirect.net>, aretana@cisco.com
IANA IANA review state Version Changed - Review Needed
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Internet Engineering Task Force (IETF)                             J. Yi
Request for Comments: 8218                           Ecole Polytechnique
Category: Experimental                                        B. Parrein
ISSN: 2070-1721                                     University of Nantes
                                                             August 2017

                      Multipath Extension for the
        Optimized Link State Routing Protocol Version 2 (OLSRv2)

Abstract

   This document specifies a multipath extension for the Optimized Link
   State Routing Protocol version 2 (OLSRv2) to discover multiple
   disjoint paths for Mobile Ad Hoc Networks (MANETs).  Considering the
   characteristics of MANETs, especially the dynamic network topology,
   using multiple paths can increase aggregated throughput and improve
   the reliability by avoiding single route failures.  The
   interoperability with OLSRv2 is retained.

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 7841.

   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/rfc8218.

Yi & Parrein                  Experimental                      [Page 1]
RFC 8218                    Multipath OLSRv2                 August 2017

Copyright Notice

   Copyright (c) 2017 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.

Yi & Parrein                  Experimental                      [Page 2]
RFC 8218                    Multipath OLSRv2                 August 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
     1.1.  Motivation and Experiments to Be Conducted  . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   7
   3.  Applicability Statement . . . . . . . . . . . . . . . . . . .   7
   4.  Protocol Overview and Functioning . . . . . . . . . . . . . .   8
   5.  Parameters and Constants  . . . . . . . . . . . . . . . . . .   9
     5.1.  Router Parameters . . . . . . . . . . . . . . . . . . . .   9
   6.  Packets and Messages  . . . . . . . . . . . . . . . . . . . .  10
     6.1.  HELLO and TC messages . . . . . . . . . . . . . . . . . .  10
       6.1.1.  SOURCE_ROUTE TLV  . . . . . . . . . . . . . . . . . .  10
     6.2.  Datagram  . . . . . . . . . . . . . . . . . . . . . . . .  11
       6.2.1.  Source Routing Header in IPv4 . . . . . . . . . . . .  11
       6.2.2.  Source Routing Header in IPv6 . . . . . . . . . . . .  11
   7.  Information Bases . . . . . . . . . . . . . . . . . . . . . .  11
     7.1.  SR-OLSRv2 Router Set  . . . . . . . . . . . . . . . . . .  11
     7.2.  Multipath Routing Set . . . . . . . . . . . . . . . . . .  12
   8.  Protocol Details  . . . . . . . . . . . . . . . . . . . . . .  12
     8.1.  HELLO and TC Message Generation . . . . . . . . . . . . .  12
     8.2.  HELLO and TC Message Processing . . . . . . . . . . . . .  13
     8.3.  MPR Selection . . . . . . . . . . . . . . . . . . . . . .  13
     8.4.  Datagram Processing at the MP-OLSRv2 Originator . . . . .  14
     8.5.  Multipath Calculation . . . . . . . . . . . . . . . . . .  15
       8.5.1.  Requirements of Multipath Calculation . . . . . . . .  15
       8.5.2.  Multipath Dijkstra Algorithm  . . . . . . . . . . . .  16
     8.6.  Multipath Routing Set Updates . . . . . . . . . . . . . .  18
     8.7.  Datagram Forwarding . . . . . . . . . . . . . . . . . . .  18
   9.  Configuration Parameters  . . . . . . . . . . . . . . . . . .  18
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  19
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