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Extensions to OSPF to Support Mobile Ad Hoc Networking
RFC 5820

Document type: RFC - Experimental (March 2010; No errata)
Updated by RFC 7137
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC 5820 (Experimental)
Responsible AD: Ross Callon
Send notices to: ospf-chairs@tools.ietf.org, draft-ietf-ospf-manet-or@tools.ietf.org

Internet Engineering Task Force (IETF)                       A. Roy, Ed.
Request for Comments: 5820                                 Cisco Systems
Category: Experimental                                   M. Chandra, Ed.
ISSN: 2070-1721                                               March 2010

         Extensions to OSPF to Support Mobile Ad Hoc Networking

Abstract

   This document describes extensions to OSPF to support mobile ad hoc
   networks (MANETs).  The extensions, called OSPF-OR (OSPF-Overlapping
   Relay), include mechanisms for link-local signaling (LLS), an OSPF-
   MANET interface, a simple technique to reduce the size of Hello
   packets by only transmitting incremental state changes, and a method
   for optimized flooding of routing updates.  OSPF-OR also provides a
   means to reduce unnecessary adjacencies to support larger MANETs.

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/rfc5820.

Roy & Chandra                 Experimental                      [Page 1]
RFC 5820          Extensions to OSPF to Support MANETs        March 2010

Copyright Notice

   Copyright (c) 2010 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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Roy & Chandra                 Experimental                      [Page 2]
RFC 5820          Extensions to OSPF to Support MANETs        March 2010

Table of Contents

   1. Introduction ....................................................4
      1.1. Problem Statement ..........................................4
      1.2. Motivation for Extending OSPF to Support MANETs ............5
   2. Requirements Notation ...........................................5
   3. Proposed Enhancements ...........................................5
      3.1. OSPF-MANET Interface .......................................7
           3.1.1. Interface Operation .................................8
           3.1.2. LSA Formats and Examples ............................8
      3.2. Incremental OSPF-MANET Hellos .............................12
           3.2.1. The I Option Bit ...................................12
           3.2.2. State Check Sequence TLV (SCS TLV) .................12
           3.2.3. Neighbor Drop TLV ..................................13
           3.2.4. Request From TLV (RF TLV) ..........................14
           3.2.5. Full State For TLV (FSF TLV) .......................14
           3.2.6. Neighbor Adjacencies ...............................15
           3.2.7. Sending Hellos .....................................16
           3.2.8. Receiving Hellos ...................................17
           3.2.9. Interoperability ...................................19
           3.2.10. Support for OSPF Graceful Restart .................19
      3.3. Optimized Flooding (Overlapping Relays) ...................20

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