Dynamic Link Exchange Protocol (DLEP)
draft-ietf-manet-dlep-16

Document Type Active Internet-Draft (manet WG)
Last updated 2015-07-21
Replaces draft-sratliff-manet-dlep
Stream IETF
Intended RFC status Proposed Standard
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Mobile Ad hoc Networks Working Group                          S. Ratliff
Internet-Draft                                                VT iDirect
Intended status: Standards Track                                B. Berry
Expires: January 21, 2016
                                                                 S. Jury
                                                           Cisco Systems
                                                          D. Satterwhite
                                                                Broadcom
                                                               R. Taylor
                                                  Airbus Defence & Space
                                                           July 20, 2015

                 Dynamic Link Exchange Protocol (DLEP)
                        draft-ietf-manet-dlep-16

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
   routing 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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   This Internet-Draft will expire on January 21, 2016.

Ratliff, et al.         Expires January 21, 2016                [Page 1]
Internet-Draft    Dynamic Link Exchange Protocol (DLEP)        July 2015

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   document authors.  All rights reserved.

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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
     1.1.  Protocol Overview . . . . . . . . . . . . . . . . . . . .   7
     1.2.  Requirements  . . . . . . . . . . . . . . . . . . . . . .   8
   2.  Assumptions . . . . . . . . . . . . . . . . . . . . . . . . .   8
   3.  Core Features and Extensions  . . . . . . . . . . . . . . . .  10
     3.1.  Experiments . . . . . . . . . . . . . . . . . . . . . . .  10
   4.  Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  Mandatory Metrics . . . . . . . . . . . . . . . . . . . .  12
   5.  DLEP Session Flow . . . . . . . . . . . . . . . . . . . . . .  12
     5.1.  Peer Discovery State  . . . . . . . . . . . . . . . . . .  12
     5.2.  Session Initialization State  . . . . . . . . . . . . . .  13
     5.3.  In-Session State  . . . . . . . . . . . . . . . . . . . .  14
     5.4.  Session Termination State . . . . . . . . . . . . . . . .  16
   6.  DLEP Signal and Message Processing  . . . . . . . . . . . . .  16
   7.  DLEP Signal and Message Structure . . . . . . . . . . . . . .  17
     7.1.  DLEP Signal Header  . . . . . . . . . . . . . . . . . . .  18
     7.2.  DLEP Message Header . . . . . . . . . . . . . . . . . . .  18
     7.3.  DLEP Generic Data Item  . . . . . . . . . . . . . . . . .  19
   8.  DLEP Signals and Messages . . . . . . . . . . . . . . . . . .  19
     8.1.  Peer Discovery Signal . . . . . . . . . . . . . . . . . .  20
     8.2.  Peer Offer Signal . . . . . . . . . . . . . . . . . . . .  21
     8.3.  Session Initialization Message  . . . . . . . . . . . . .  21
     8.4.  Session Initialization Response Message . . . . . . . . .  22
     8.5.  Session Update Message  . . . . . . . . . . . . . . . . .  24
     8.6.  Session Update Response Message . . . . . . . . . . . . .  25
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