Dynamic Link Exchange Protocol (DLEP) Multi-Hop Forwarding Extension
draft-ietf-manet-dlep-multi-hop-extension-07

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Last updated 2019-05-14 (latest revision 2019-05-05)
Replaces draft-cheng-manet-dlep-multi-hop-extension
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Network Working Group                                           B. Cheng
Internet-Draft                                    MIT Lincoln Laboratory
Intended status: Standards Track                          L. Berger, Ed.
Expires: November 6, 2019                        LabN Consulting, L.L.C.
                                                             May 5, 2019

  Dynamic Link Exchange Protocol (DLEP) Multi-Hop Forwarding Extension
              draft-ietf-manet-dlep-multi-hop-extension-07

Abstract

   This document defines an extension to the Dynamic Link Exchange
   Protocol (DLEP) that enables the reporting and control of Multi-Hop
   Forwarding by DLEP capable modems.

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Cheng & Berger          Expires November 6, 2019                [Page 1]
Internet-Draft          DLEP Multi-Hop Extension                May 2019

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Key Words . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Extension Usage and Identification  . . . . . . . . . . . . .   3
   3.  Extension Data Items  . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Hop Count . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.2.  Hop Control . . . . . . . . . . . . . . . . . . . . . . .   5
       3.2.1.  Reset . . . . . . . . . . . . . . . . . . . . . . . .   6
       3.2.2.  Terminate . . . . . . . . . . . . . . . . . . . . . .   7
       3.2.3.  Direct Connection . . . . . . . . . . . . . . . . . .   7
       3.2.4.  Suppress Forwarding . . . . . . . . . . . . . . . . .   7
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
     5.1.  Extension Type Value  . . . . . . . . . . . . . . . . . .   8
     5.2.  Data Item Values  . . . . . . . . . . . . . . . . . . . .   9
     5.3.  Hop Control Actions Registry  . . . . . . . . . . . . . .   9
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Appendix A.  Acknowledgments  . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   The Dynamic Link Exchange Protocol (DLEP) is defined in [RFC8175].
   It provides the exchange of link related control information between
   a modem and a router.  DLEP defines a base set of mechanisms as well
   as support for possible extensions.  This document defines one such
   extension.

   Some modem technologies support mobile ad hoc network (MANET)
   forwarding where connectivity to destinations is provided via
   forwarding in intermediate modems.  This document refers to
   forwarding by intermediate modems as 'multi-hop forwarding'.  DLEP
   Destination messages can be used to report such reachable
   destinations, see [RFC8175], but do not provide any information
   related to the number or capacity of the hops.  The extension defined
   in this document enables modems to inform routers when multi-hop
   forwarding is being used, and routers to request that modems change
   multi-hop forwarding behavior.  The extension defined in this
   document is referred to as "Multi-Hop Forwarding", where each modem
   that transmits/sends data to reach a particular destination is
   counted as a hop.

   It is important to note that the use of the hop control mechanism
   defined in this document can result in connectivity changes and even
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