Dynamic Link Exchange Protocol (DLEP)
draft-ietf-manet-dlep-13
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2015-05-13
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Mobile Ad hoc Networks Working Group S. Ratliff
Internet-Draft VT iDirect
Intended status: Standards Track B. Berry
Expires: November 13, 2015
S. Jury
Cisco Systems
D. Satterwhite
Broadcom
R. Taylor
Airbus Defence & Space
May 12, 2015
Dynamic Link Exchange Protocol (DLEP)
draft-ietf-manet-dlep-13
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 November 13, 2015.
Ratliff, et al. Expires November 13, 2015 [Page 1]
Internet-Draft Dynamic Link Exchange Protocol (DLEP) May 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
Provisions Relating to IETF Documents
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Protocol Overview . . . . . . . . . . . . . . . . . . . . 7
1.2. Requirements . . . . . . . . . . . . . . . . . . . . . . 8
2. Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . 8
3. Core Features and Optional Extensions . . . . . . . . . . . . 10
3.1. Negotiation of Optional Extensions . . . . . . . . . . . 10
3.2. Protocol Extensions . . . . . . . . . . . . . . . . . . . 11
3.3. Experimental Signals and Data Items . . . . . . . . . . . 11
4. Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1. Mandatory Metrics . . . . . . . . . . . . . . . . . . . . 12
5. DLEP 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 . . . . . . . . . . . . . . . . . . . 15
6. DLEP Signal Structure and Processing . . . . . . . . . . . . 16
6.1. DLEP Signal Header . . . . . . . . . . . . . . . . . . . 16
6.2. DLEP Generic Data Item . . . . . . . . . . . . . . . . . 17
7. DLEP Signals . . . . . . . . . . . . . . . . . . . . . . . . 17
7.1. Peer Discovery Signal . . . . . . . . . . . . . . . . . . 18
7.2. Peer Offer Signal . . . . . . . . . . . . . . . . . . . . 19
7.3. Peer Initialization Signal . . . . . . . . . . . . . . . 19
7.4. Peer Initialization ACK Signal . . . . . . . . . . . . . 20
7.5. Peer Update Signal . . . . . . . . . . . . . . . . . . . 22
7.6. Peer Update ACK Signal . . . . . . . . . . . . . . . . . 23
7.7. Peer Termination Signal . . . . . . . . . . . . . . . . . 24
7.8. Peer Termination ACK Signal . . . . . . . . . . . . . . . 25
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