DLEP Multi-Hop Forwarding Extension
draft-ietf-manet-dlep-multi-hop-extension-05

Document Type Active Internet-Draft (manet WG)
Last updated 2018-11-16 (latest revision 2018-02-20)
Replaces draft-cheng-manet-dlep-multi-hop-extension
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Network Working Group                                           B. Cheng
Internet-Draft                                        Lincoln Laboratory
Intended status: Standards Track                          L. Berger, Ed.
Expires: August 24, 2018                         LabN Consulting, L.L.C.
                                                       February 20, 2018

                  DLEP Multi-Hop Forwarding Extension
              draft-ietf-manet-dlep-multi-hop-extension-05

Abstract

   This document defines an extension to the DLEP protocol that enables
   the reporting and control of Multi-Hop Forwarding by DLEP capable
   modems.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on August 24, 2018.

Copyright Notice

   Copyright (c) 2018 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
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   described in the Simplified BSD License.

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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 . . . . . . . . . . . . . . . . . . . . . .   6
       3.2.3.  Direct Connection . . . . . . . . . . . . . . . . . .   7
       3.2.4.  Suppress Forwarding . . . . . . . . . . . . . . . . .   7
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
     5.1.  Extension Type Value  . . . . . . . . . . . . . . . . . .   8
     5.2.  Data Item Values  . . . . . . . . . . . . . . . . . . . .   8
     5.3.  Hop Control Actions Registry  . . . . . . . . . . . . . .   8
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     6.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Appendix A.  Acknowledgments  . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   The Dynamic Link Exchange Protocol (DLEP) is defined in [RFC8175].
   It provides the exchange of link related control information between
   DLEP peers.  DLEP peers are comprised of 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 connectivity to destinations via
   multi-hop forwarding.  DLEP Destination messages can be used to
   report such connectivity, 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".

   This document defines a new DLEP Extension Type Value in Section 2
   which is used to indicate the use of the extension, and three new
   DLEP Data Items in Section 3.

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1.1.  Key Words

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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