YANG Model for QoS
draft-asechoud-netmod-qos-model-00

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Network Working Group                                       A. Choudhary
Internet-Draft                                           M. Jethanandani
Intended status: Standards Track                           Cisco Systems
Expires: October 6, 2016                                   April 4, 2016

                           YANG Model for QoS
                   draft-asechoud-netmod-qos-model-00

Abstract

   This document describes a YANG model for Quality of Service (QoS)
   configuration and operational parameters.

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Choudhary & Jethanandani Expires October 6, 2016                [Page 1]
Internet-Draft             YANG Model For QoS                 April 2016

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  QoS Model Design  . . . . . . . . . . . . . . . . . . . . . .   3
   4.  DiffServ Model Design . . . . . . . . . . . . . . . . . . . .   3
   5.  Modules Tree Structure  . . . . . . . . . . . . . . . . . . .   4
   6.  Modules . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
     6.1.  IETF-QOS-CLASSIFIER . . . . . . . . . . . . . . . . . . .  13
     6.2.  IETF-QOS-POLICY . . . . . . . . . . . . . . . . . . . . .  20
     6.3.  IETF-QOS-ACTION . . . . . . . . . . . . . . . . . . . . .  22
     6.4.  IETF-QOS-TARGET . . . . . . . . . . . . . . . . . . . . .  35
     6.5.  IETF-DIFFSERV . . . . . . . . . . . . . . . . . . . . . .  42
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  44
   8.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .  45
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  45
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  45
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  45
   Appendix A.  Open Items . . . . . . . . . . . . . . . . . . . . .  46
   Appendix B.  Company A example  . . . . . . . . . . . . . . . . .  46
     B.1.  EXAMPLE-COMPA-DIFFSERV  . . . . . . . . . . . . . . . . .  46
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  50

1.  Introduction

   This document defines a base YANG [RFC6020] data module for Quality
   of Service (QoS) configuration and operational parameters.
   Differentiated Services (DiffServ) module is an augmentation of the
   base QoS model.  Remote Procedure Calls (RPC) or notification
   definition is currently not part of this document and will be added
   later if necessary.  QoS base module defines a basic building blocks
   to define a classifier, policy, action and target.  The base module
   has been augmented to include packet match fields, action parameters,
   and statistics data to define the DiffServ module.  It is left up to
   individual vendors to stitch actions like queues, random-detect (RED)
   and vendor specific parameters of the DiffServ policy definitions.
   Designing the module in this manner allows for a very flexible and
   extensible module that should fit in with most of the vendor
   requirements.  The DiffServ model is based on DiffServ architecture,
   and various references have been made to available standard
   architecture documents.

   DiffServ is a preferred approach for network service providers to
   offer services to different customers based on their network Quality-
   of-Service (QoS) objectives.  The traffic streams are differentiated
   based on DiffServ Code Points (DSCP) carried in the IP header of each
   packet.  The DSCP markings are applied by upstream node or by the
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