Multi-Topology Extension for the Optimized Link State Routing Protocol Version 2 (OLSRv2)
RFC 7722

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Internet Engineering Task Force (IETF)                       C. Dearlove
Request for Comments: 7722                                   BAE Systems
Updates: 7188, 7631                                           T. Clausen
Category: Experimental                          LIX, Ecole Polytechnique
ISSN: 2070-1721                                            December 2015

                        Multi-Topology Extension
    for the Optimized Link State Routing Protocol Version 2 (OLSRv2)

Abstract

   This specification describes an extension to the Optimized Link State
   Routing Protocol version 2 (OLSRv2) to support multiple routing
   topologies, while retaining interoperability with OLSRv2 routers that
   do not implement this extension.

   This specification updates RFCs 7188 and 7631 by modifying and
   extending TLV registries and descriptions.

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/rfc7722.

Dearlove & Clausen            Experimental                      [Page 1]
RFC 7722                  Multi-Topology OLSRv2            December 2015

Copyright Notice

   Copyright (c) 2015 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.

Dearlove & Clausen            Experimental                      [Page 2]
RFC 7722                  Multi-Topology OLSRv2            December 2015

Table of Contents

   1. Introduction ....................................................4
      1.1. Motivation and Experimentation .............................4
   2. Terminology and Notation ........................................5
   3. Applicability Statement .........................................6
   4. Protocol Overview and Functioning ...............................6
   5. Parameters ......................................................8
   6. Information Bases ...............................................9
      6.1. Local Attached Network Set .................................9
      6.2. Link Sets ..................................................9
      6.3. 2-Hop Sets .................................................9
      6.4. Neighbor Set ...............................................9
      6.5. Router Topology Set .......................................10
      6.6. Routable Address Topology Set .............................10
      6.7. Attached Network Set ......................................10
      6.8. Routing Sets ..............................................11
   7. TLVs ...........................................................11
      7.1. Message TLVs ..............................................11
           7.1.1. MPR_TYPES TLV ......................................11
           7.1.2. MPR_WILLING TLV ....................................11
      7.2. Address Block TLVs ........................................12
           7.2.1. LINK_METRIC TLV ....................................12
           7.2.2. MPR TLV ............................................13
           7.2.3. GATEWAY TLV ........................................13
   8. HELLO Messages .................................................14
      8.1. HELLO Message Generation ..................................14
      8.2. HELLO Message Processing ..................................15
   9. TC Messages ....................................................15
      9.1. TC Message Generation .....................................15
      9.2. TC Message Processing .....................................16
   10. MPR Calculation ...............................................16
   11. Routing Set Calculation .......................................17
   12. Management Considerations .....................................17