Use cases for policy-based resource management in VNF-FG
draft-xuan-nfvrg-policy-resource-man-vnffg-usecase-00

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<NFV Research Group>                                     Truong-Xuan Do
Internet Draft                                             Younghan Kim
Intended status: Informational               Soongsil University, Korea
Expires: April 2017                                        Oct 30, 2016

          Use cases for policy-based resource management in VNF-FG
         draft-xuan-nfvrg-policy-resource-man-vnffg-usecase-00

                          
   Abstract
   
   This document describes two use cases for policy-based resource 
   management in VNF-FG. These two use cases are not covered by two 
   documents [irtf-nfvrg-resource-management] and 
   [irtf-nfvrg-policy-based-resource-management]. These two use cases
   considers service plan policies in VNF-FG placement and affinity
   policies in Network forwarding path update. 
   
   
   Status of this Memo

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   Copyright Notice

   Copyright (c) 2014 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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   Relating to IETF Documents (http://trustee.ietf.org/license-info)
   in effect on the date of publication of this document.  Please
   review these documents carefully, as they describe your rights
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   Table of Contents

   1. Introduction...................................................3
   2. Conventions used in this document..............................3
   3. Policy-based resource management for VNF-FG....................4
   4. Alignment with policy-based resource management document.......5
   5. Security Considerations........................................5
   6. IANA Considerations............................................5
   7. References.....................................................5
      7.1. Normative References......................................5
      7.2. Informative References....................................5

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1. Introduction
   
   In this document, two additional use cases are discussed on policies
   which affect the resource management operations for VNF-FG. These 
   policies include service plan policies for customer in case of 
   VNF-FG placement and update. Another is affinity policies for VNF-FG
   update.

   
   
   
2. Conventions used in this document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC-2119 [RFC2119].

    The terms about VNF-I, VL, VNF-FG, classifers and MANO are defined 
    in [RFC7665] and [ETSI-NFV-MANO]
        

        

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3. Policy-based resource management for VNF-FG

VNF-FG is composed of an ordered sequence of VNFs which provides a 
specific services. A network forwarding path (NFP) is an instance of 
VNF-FG. NFP is composed by VNF intances (VNF-I), virtual links (VL),
virtual switches (vSW or forwarder), and traffic classifiers. The 
NFP composition depends on the resource states, such as availability,
engergy consumption of VNF-I and bandwidth, latency of VL. Two resource
management oprations related to VNF-FG are NFP placement and NFP 
update. In the document [irtf-nfvrg-resource-management], some use 
uses for resource management include fail-over, load-balancing,
path optimizaton, and engergy efficiency. Here, we present another
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