DLEP Control Plane Based Pause Extension
draft-ietf-manet-dlep-pause-extension-06

Document Type Active Internet-Draft (manet WG)
Last updated 2019-04-11 (latest revision 2019-04-03)
Replaces draft-cheng-manet-dlep-pause-extension
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Network Working Group                                           B. Cheng
Internet-Draft                                                D. Wiggins
Intended status: Standards Track                  MIT Lincoln Laboratory
Expires: October 5, 2019                                  L. Berger, Ed.
                                                 LabN Consulting, L.L.C.
                                                           April 3, 2019

                DLEP Control Plane Based Pause Extension
                draft-ietf-manet-dlep-pause-extension-06

Abstract

   This document defines an extension to the Dynamic Link Exchange
   Protocol (DLEP) that enables a modem to use DLEP messages to pause
   and resume data traffic coming from its peer router.

Status of This Memo

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   This Internet-Draft will expire on October 5, 2019.

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   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Cheng, et al.            Expires October 5, 2019                [Page 1]
Internet-Draft            DLEP Pause Extension                April 2019

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Key Words . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Extension Usage and Identification  . . . . . . . . . . . . .   3
   3.  Extension Data Items  . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Queue Parameters  . . . . . . . . . . . . . . . . . . . .   3
       3.1.1.  Queue Parameter Sub Data Item . . . . . . . . . . . .   5
     3.2.  Pause . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     3.3.  Restart . . . . . . . . . . . . . . . . . . . . . . . . .   8
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     5.1.  Extension Type Value  . . . . . . . . . . . . . . . . . .   9
     5.2.  Data Item Values  . . . . . . . . . . . . . . . . . . . .   9
     5.3.  Queue Parameters Sub Data Item Values . . . . . . . . . .  10
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Appendix A.  Acknowledgments  . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

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.

   The base DLEP specification does not include any data plane flow
   control capability.  Various flow control methods are possible, e.g.,
   see [I-D.ietf-manet-dlep-da-credit-extension].  The extension defined
   in this document supports flow control of data traffic based on
   explicit messages sent via DLEP by a modem to indicate when a router
   should hold off sending traffic, and when it should resume.  The
   extension also optionally supports DSCP (differentiated services
   codepoint) aware flow control.  For general background on
   Differentiated Services see [RFC2475].  The extension defined in this
   document is referred to as "Control Plane Based Pause".  Note that
   this mechanism only applies to traffic that is to be transmitted on
   the modem's attached data channel and not to DLEP control messages
   themselves.

   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
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