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Cross Stratum Optimization enabled Path Computation
draft-dhody-pce-cso-enabled-path-computation-05

Document type: Active Internet-Draft (individual)
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Last updated: 2014-01-19
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PCE Working Group                                               D. Dhody
Internet-Draft                                                    Y. Lee
Intended status: Informational                       Huawei Technologies
Expires: July 23, 2014                                     LM. Contreras
                                                     O. Gonzalez de Dios
                                                          Telefonica I+D
                                                               N. Ciulli
                                                               Nextworks
                                                        January 19, 2014

          Cross Stratum Optimization enabled Path Computation
            draft-dhody-pce-cso-enabled-path-computation-05

Abstract

   Applications like cloud computing, video gaming, HD Video streaming,
   Live Concerts, Remote Medical Surgery, etc are offered by Data
   Centers.  These data centers are geographically distributed and
   connected via a network.  Many decisions are made in the Application
   space without any concern of the underlying network.  Cross stratum
   application/network optimization focus on the challenges and
   opportunities presented by data center based applications and
   carriers networks together [CSO-DATACNTR].

   Constraint-based path computation is a fundamental building block for
   traffic engineering systems such as Multiprotocol Label Switching
   (MPLS) and Generalized Multiprotocol Label Switching (GMPLS)
   networks.  [RFC4655] explains the architecture for a Path Computation
   Element (PCE)-based model to address this problem space.

   This document explains the architecture for CSO enabled Path
   Computation.

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
   Task Force (IETF).  Note that other groups may also distribute
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   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

Dhody, et al.             Expires July 23, 2014                 [Page 1]
Internet-Draft                   CSO-PCE                    January 2014

   This Internet-Draft will expire on July 23, 2014.

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
   Provisions 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 and restrictions with respect
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   5
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  CSO enabled PCE Architecture  . . . . . . . . . . . . . . . .   6
   4.  Path Computation and Setup Procedure  . . . . . . . . . . . .  10
     4.1.  Path Setup Using NMS  . . . . . . . . . . . . . . . . . .  11
     4.2.  Path Setup Using a Network Control Plane  . . . . . . . .  12
     4.3.  Path Setup using PCE  . . . . . . . . . . . . . . . . . .  13
     4.4.  Path Setup Using a Software Defined Network controller  .  14
   5.  Other Consideration . . . . . . . . . . . . . . . . . . . . .  15
     5.1.  Inter-domain  . . . . . . . . . . . . . . . . . . . . . .  15
       5.1.1.  One Application Domain with Multiple Network Domains   15
       5.1.2.  Multiple Application Domains with Multiple Network
               Domains . . . . . . . . . . . . . . . . . . . . . . .  16
         5.1.2.1.  ACG talks to multiple NCGs  . . . . . . . . . . .  16
         5.1.2.2.  ACG talks to the primary NCG, which talks to the
                   other NCG of different domains  . . . . . . . . .  17
       5.1.3.  Federation of SDN domains . . . . . . . . . . . . . .  18
     5.2.  Bottleneck  . . . . . . . . . . . . . . . . . . . . . . .  19
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  20
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  20

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