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Dynamic Link Exchange Protocol (DLEP)
draft-ietf-manet-dlep-08

Document type: Active Internet-Draft (manet WG)
Document stream: IETF
Last updated: 2015-02-27
Intended RFC status: Unknown
Other versions: plain text, pdf, html

IETF State: WG Document
Document shepherd: No shepherd assigned

IESG State: I-D Exists
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Mobile Ad hoc Networks Working Group                          S. Ratliff
Internet-Draft                                                VT iDirect
Intended status: Standards Track                                B. Berry
Expires: August 31, 2015
                                                                 S. Jury
                                                           Cisco Systems
                                                          D. Satterwhite
                                                                Broadcom
                                                               R. Taylor
                                                  Airbus Defence & Space
                                                       February 27, 2015

                 Dynamic Link Exchange Protocol (DLEP)
                        draft-ietf-manet-dlep-08

Abstract

   When routing devices rely on modems to effect communications over
   wireless links, they need timely and accurate knowledge of the
   characteristics of the link (speed, state, etc.) in order to make
   forwarding decisions.  In mobile or other environments where these
   characteristics change frequently, manual configurations or the
   inference of state through routing or transport protocols does not
   allow the router to make the best decisions.  A bidirectional, event-
   driven communication channel between the router and the modem is
   necessary.

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
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 31, 2015.

Ratliff, et al.          Expires August 31, 2015                [Page 1]
Internet-Draft    Dynamic Link Exchange Protocol (DLEP)    February 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
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   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
     1.1.  Requirements  . . . . . . . . . . . . . . . . . . . . . .   8
   2.  Assumptions . . . . . . . . . . . . . . . . . . . . . . . . .   8
   3.  Core Features and Optional Extensions . . . . . . . . . . . .  10
     3.1.  Negotiation of Optional Extensions  . . . . . . . . . . .  10
     3.2.  Protocol Extensions . . . . . . . . . . . . . . . . . . .  10
     3.3.  Experimental Signals and Data Items . . . . . . . . . . .  11
   4.  Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  Mandatory Metrics . . . . . . . . . . . . . . . . . . . .  12
   5.  Normal Session Flow . . . . . . . . . . . . . . . . . . . . .  12
     5.1.  DLEP Router session flow - Discovery case . . . . . . . .  13
     5.2.  DLEP Router session flow - Configured case  . . . . . . .  13
     5.3.  DLEP Modem session flow . . . . . . . . . . . . . . . . .  14
     5.4.  Common Session Flow . . . . . . . . . . . . . . . . . . .  14
   6.  DLEP Message Processing . . . . . . . . . . . . . . . . . . .  15
     6.1.  DLEP Signal Header  . . . . . . . . . . . . . . . . . . .  16
     6.2.  DLEP Generic Data Item  . . . . . . . . . . . . . . . . .  16
   7.  DLEP Signals  . . . . . . . . . . . . . . . . . . . . . . . .  17
     7.1.  Peer Discovery Signal . . . . . . . . . . . . . . . . . .  17
     7.2.  Peer Offer Signal . . . . . . . . . . . . . . . . . . . .  18
     7.3.  Peer Initialization Signal  . . . . . . . . . . . . . . .  19
     7.4.  Peer Initialization ACK Signal  . . . . . . . . . . . . .  20
     7.5.  Peer Update Signal  . . . . . . . . . . . . . . . . . . .  21
     7.6.  Peer Update ACK Signal  . . . . . . . . . . . . . . . . .  22
     7.7.  Peer Termination Signal . . . . . . . . . . . . . . . . .  23

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