Dynamic Link Exchange Protocol (DLEP)
draft-ietf-manet-dlep-26

Document Type Active Internet-Draft (manet WG)
Last updated 2016-12-09
Replaces draft-sratliff-manet-dlep
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
Document shepherd Justin Dean
Shepherd write-up Show (last changed 2016-03-23)
IESG IESG state IESG Evaluation
Consensus Boilerplate Yes
Telechat date On agenda of 2016-12-15 IESG telechat
Needs 9 more YES or NO OBJECTION positions to pass.
Responsible AD Alvaro Retana
Send notices to aretana@cisco.com
IANA IANA review state Version Changed - Review Needed
IANA action state None
Mobile Ad hoc Networks Working Group                          S. Ratliff
Internet-Draft                                                VT iDirect
Intended status: Standards Track                                 S. Jury
Expires: June 12, 2017                                     Cisco Systems
                                                          D. Satterwhite
                                                                Broadcom
                                                               R. Taylor
                                                  Airbus Defence & Space
                                                                B. Berry
                                                        December 9, 2016

                 Dynamic Link Exchange Protocol (DLEP)
                        draft-ietf-manet-dlep-26

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
   working documents as Internet-Drafts.  The list of current Internet-
   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 June 12, 2017.

Ratliff, et al.           Expires June 12, 2017                 [Page 1]
Internet-Draft    Dynamic Link Exchange Protocol (DLEP)    December 2016

Copyright Notice

   Copyright (c) 2016 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   7
     2.1.  Destinations  . . . . . . . . . . . . . . . . . . . . . .   8
   3.  Extensions  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     3.1.  Requirements  . . . . . . . . . . . . . . . . . . . . . .   9
   4.  Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
   5.  DLEP Session Flow . . . . . . . . . . . . . . . . . . . . . .  11
     5.1.  Peer Discovery State  . . . . . . . . . . . . . . . . . .  11
     5.2.  Session Initialization State  . . . . . . . . . . . . . .  12
     5.3.  In-Session State  . . . . . . . . . . . . . . . . . . . .  13
       5.3.1.  Heartbeats  . . . . . . . . . . . . . . . . . . . . .  13
     5.4.  Session Termination State . . . . . . . . . . . . . . . .  14
     5.5.  Session Reset state . . . . . . . . . . . . . . . . . . .  14
       5.5.1.  Unexpected TCP connection termination . . . . . . . .  14
   6.  Transaction Model . . . . . . . . . . . . . . . . . . . . . .  15
   7.  Extensions  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     7.1.  Experiments . . . . . . . . . . . . . . . . . . . . . . .  16
   8.  Scalability . . . . . . . . . . . . . . . . . . . . . . . . .  16
   9.  DLEP Signal and Message Structure . . . . . . . . . . . . . .  17
     9.1.  DLEP Signal Header  . . . . . . . . . . . . . . . . . . .  17
     9.2.  DLEP Message Header . . . . . . . . . . . . . . . . . . .  18
     9.3.  DLEP Generic Data Item  . . . . . . . . . . . . . . . . .  18
   10. DLEP Signals and Messages . . . . . . . . . . . . . . . . . .  19
     10.1.  General Processing Rules . . . . . . . . . . . . . . . .  19
     10.2.  Status code processing . . . . . . . . . . . . . . . . .  20
     10.3.  Peer Discovery Signal  . . . . . . . . . . . . . . . . .  20
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