Declarative Policy Model
draft-bi-declarative-policy-01

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Network Working Group                                                     J. Bi 
Internet Draft                                                   Tsinghua Univ. 
Intended status: Standard Track                                          Q. Sun 
Expires: May 2016                                                        C. Xie 
                                                                  China Telecom 
                                                                         Y. Zha 
                                                            Huawei Technologies 
                                                                     
                                                                     
                                                              November 13, 2015 
 
                                    
                          Declarative Policy Model  
                       draft-bi-declarative-policy-01 

Abstract 

   This document describes a declarative (also called intent based) policy model 
   to describe the user's intent on network policy. The intent policy model is a 
   specific data model specifies the desired state of the network system. It helps 
   the service management in Simplified Use of Policy Abstractions (SUPA) to model 
   the policy (a set of states described by constraints) that defines the final 
   results of a VPN service without specifying how it is monitored and managed 
   during its lifecycle. One application for Distributed Data Center (DDC) 
   scenarios with policy enforcement is provided with details of how to convert 
   high level intent policy into lower level configurations.  

Status of this Memo 

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Bi, et al.                 Expires May 13, 2016                     [Page 1] 


Internet-Draft            Declarative Policy Model               November 2015 
    

   This Internet-Draft will expire on May 13, 2015. 

Copyright Notice 

   Copyright (c) 2014 IETF Trust and the persons identified as the document 
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   This document is subject to BCP 78 and the IETF Trust's Legal Provisions 
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Table of Contents 

   1. Introduction .......................................................... 2 
   2. Conventions used in this document ..................................... 3 
   3. Policy Based Service Management Framework.............................. 3 
   4. Declarative Policy Configuration Modules .............................. 4 
      4.1. Declarative Policy Framework ..................................... 4 
      4.2. Declarative Policy Model ......................................... 5 
   5. Declarative Policy Applications in DDC services ...................... 14 
      5.1. Policy Based Traffic Steering Case study ........................ 14 
      5.2. Declarative Policy Enforcement .................................. 19 
   6. Security Considerations .............................................. 20 
   7. IANA Considerations .................................................. 20 
   8. Acknowledgments ...................................................... 21 
   9. References............................................................ 21 
      9.1. Normative References ............................................ 21 
      9.2. Informative References .......................................... 21 
    
1. Introduction 

   In order to support emerging DDC service with VPN connection as well as new 
   services, it brings new requirements on Policy based service management for 
   service providers. Instead of manual configuration of the network 
   infrastructures, policy based service management is achieved by using policies 
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