DLEP DiffServ Aware Credit Windowing Extension
draft-ietf-manet-dlep-da-credit-extension-01

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Last updated 2017-03-13
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Network Working Group                                           B. Cheng
Internet-Draft                                                D. Wiggins
Intended status: Standards Track                      Lincoln Laboratory
Expires: September 14, 2017                                    L. Berger
                                                 LabN Consulting, L.L.C.
                                                          March 13, 2017

             DLEP DiffServ Aware Credit Windowing Extension
              draft-ietf-manet-dlep-da-credit-extension-01

Abstract

   This document defines an extension to the DLEP protocol that enables
   a DiffServ aware credit-windowing scheme for destination-specific
   flow control.

Status of This Memo

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   This Internet-Draft will expire on September 14, 2017.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Cheng, et al.          Expires September 14, 2017               [Page 1]
Internet-Draft          DLEP DA Credit Extension              March 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Key Words . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Extension Overview  . . . . . . . . . . . . . . . . . . . . .   3
   3.  Extension Usage and Identification  . . . . . . . . . . . . .   4
   4.  Data Plane Considerations . . . . . . . . . . . . . . . . . .   4
   5.  Extension Messages  . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  Credit Control Message  . . . . . . . . . . . . . . . . .   4
     5.2.  Credit Control Response Message . . . . . . . . . . . . .   5
   6.  Extension Data Items  . . . . . . . . . . . . . . . . . . . .   5
     6.1.  Queue Parameters  . . . . . . . . . . . . . . . . . . . .   6
     6.2.  DiffServ Aware (DA) Credit Grant  . . . . . . . . . . . .   8
     6.3.  DiffServ Aware (DA) Credit Window Status  . . . . . . . .  10
     6.4.  DiffServ Aware (DA) Credit Request  . . . . . . . . . . .  12
   7.  Compatibility . . . . . . . . . . . . . . . . . . . . . . . .  13
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
     9.1.  Extension Type Value  . . . . . . . . . . . . . . . . . .  13
     9.2.  Message Values  . . . . . . . . . . . . . . . . . . . . .  14
     9.3.  Data Item Values  . . . . . . . . . . . . . . . . . . . .  14
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     10.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Appendix A.  Open and Resolved Issues . . . . . . . . . . . . . .  15
     A.1.  Merge with [I-D.ietf-manet-credit-window] . . . . . . . .  15
     A.2.  Credit Windows Shared Across Destinations . . . . . . . .  16
     A.3.  Supporting Router Limits  . . . . . . . . . . . . . . . .  16
     A.4.  Absolute vs Increment . . . . . . . . . . . . . . . . . .  16
     A.5.  Alternate Format Encoding . . . . . . . . . . . . . . . .  16
     A.6.  Bidirectional Flow
           Control (closed)  . . . . . . . . . . . . . . . . . . . .  17
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

1.  Introduction

   The Dynamic Link Event Protocol (DLEP) is defined in
   [I-D.ietf-manet-dlep].  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
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