Resource Management in Service Chaining
draft-irtf-nfvrg-resource-management-service-chain-00

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Internet Research Task Force (IRTF)                               S. Lee
Internet-Draft                                                      ETRI
Intended status: Informational                                   S. Pack
Expires: November 19, 2015                                            KU
                                                               M-K. Shin
                                                                    ETRI
                                                                 E. Paik
                                                                      KT
                                                            May 18, 2015

                Resource Management in Service Chaining
         draft-irtf-nfvrg-resource-management-service-chain-00

Abstract

   This document specifies problem definition and use cases of NFV
   resource management in service chaining for path optimization,
   traffic optimization, failover, load balancing, etc.  It further
   describes design considerations and relevant framework for the
   resource management capability that dynamically creates and updates
   network forwarding paths (NFPs) considering resource constraints of
   NFV infrastructure.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on November 19, 2015.

Copyright Notice

   Copyright (c) 2015 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
   Provisions Relating to IETF Documents

Lee, et al.             Expires November 19, 2015               [Page 1]
Internet-Draft   Resource Management in Service Chaining        May 2015

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Resource management in service chain  . . . . . . . . . . . .   4
     3.1.  Use cases . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Design considerations . . . . . . . . . . . . . . . . . .   6
     3.3.  Framework . . . . . . . . . . . . . . . . . . . . . . . .   7
   4.  Applicability to SFC  . . . . . . . . . . . . . . . . . . . .   7
     4.1.  Related works in IETF SFC WG  . . . . . . . . . . . . . .   7
     4.2.  Integration in SFC control-plane architecture . . . . . .   8
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   Network Functions Virtualisation (NFV) [ETSI-NFV-WHITE] offers a new
   way to design, deploy and manage network services.  The network
   service can be composed of one or more network functions and NFV
   relocates the network functions from dedicated hardware appliances to
   generic servers, so they can run in software.  Using these
   virtualized network functions (VNFs), one or more VNF forwarding
   graph (VNF-FG) can be associated to the network service, each of
   which describes a network connectivity topology, by referencing VNFs
   and Virtual Links that connect them.  One or more network forwarding
   paths (NFPs) can be built on top of such a topology, each defining an
   ordered sequence of VNFs and Virtual Links to be traversed by traffic
   flows matching certain criteria.

   The performance or state of the NFP depends on the ones of underlying
   NFVI resources including VNF instances (VNF-Is) and VLs.  For
   example, if one of the VNF instances in a NFP gets failed, the whole
   network service using the NFP also gets failed.  Thus, the VNF
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