DLEP Credit-Based Flow Control Messages and Data Items
draft-ietf-manet-dlep-credit-flow-control-03

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Last updated 2018-08-02
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Network Working Group                                           B. Cheng
Internet-Draft                                                D. Wiggins
Intended status: Standards Track                  MIT Lincoln Laboratory
Expires: February 3, 2019                                      L. Berger
                                                 LabN Consulting, L.L.C.
                                                              S. Ratliff
                                                              VT iDirect
                                                          August 2, 2018

         DLEP Credit-Based Flow Control Messages and Data Items
              draft-ietf-manet-dlep-credit-flow-control-03

Abstract

   This document defines new DLEP protocol Data Items that are used to
   support credit-based flow control.  Credit window control is used to
   regulate when data may be sent to an associated virtual or physical
   queue.  The Data Items are defined in an extensible and reusable
   fashion.  Their use will be mandated in other documents defining
   specific DLEP extensions.

Status of This Memo

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   This Internet-Draft will expire on February 3, 2019.

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   Copyright (c) 2018 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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   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Cheng, et al.           Expires February 3, 2019                [Page 1]
Internet-Draft       DLEP Credit-Based Flow Control          August 2018

   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Key Words . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Credit Window Control . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Data Plane Considerations . . . . . . . . . . . . . . . .   5
     2.2.  Credit Window Messages  . . . . . . . . . . . . . . . . .   5
       2.2.1.  Credit Control Message  . . . . . . . . . . . . . . .   5
       2.2.2.  Credit Control Response Message . . . . . . . . . . .   6
     2.3.  Credit Window Control Data Items  . . . . . . . . . . . .   7
       2.3.1.  Credit Window Initialization  . . . . . . . . . . . .   7
       2.3.2.  Credit Window Associate . . . . . . . . . . . . . . .   9
       2.3.3.  Credit Window Grant . . . . . . . . . . . . . . . . .  10
       2.3.4.  Credit Window Status  . . . . . . . . . . . . . . . .  12
       2.3.5.  Credit Window Request . . . . . . . . . . . . . . . .  13
     2.4.  Management Considerations . . . . . . . . . . . . . . . .  14
   3.  Compatibility . . . . . . . . . . . . . . . . . . . . . . . .  14
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
     5.1.  Message Values  . . . . . . . . . . . . . . . . . . . . .  15
     5.2.  Data Item Values  . . . . . . . . . . . . . . . . . . . .  15
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  16
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  16
   Appendix A.  Acknowledgments  . . . . . . . . . . . . . . . . . .  17
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

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.  DLEP defines Data Items which are sets of information
   that can be reused in DLEP messaging.  The base DLEP specification
   does not include any flow identification beyond DLEP endpoints or
   flow control capability.  There are various flow control techniques
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