Cross Stratum Optimization enabled Path Computation.
draft-dhody-pce-cso-enabled-path-computation-00

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Network Working Group                                           D. Dhody
Internet-Draft                             Huawei Technologies India Pvt
Intended status: Informational                                       Ltd
Expires: August 17, 2012                                          Y. Lee
                                                     Huawei Technologies
                                                       February 14, 2012

          Cross Stratum Optimization enabled Path Computation.
              draft-dhody-pce-cso-enabled-path-computation-00

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 architecture for CSO enabled Path Computation.

Status of This Memo

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   This Internet-Draft will expire on August 17, 2012.

Copyright Notice

Dhody & Lee              Expires August 17, 2012                [Page 1]
Internet-Draft                   CSO-PCE                   February 2012

   Copyright (c) 2012 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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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Requirements Language  . . . . . . . . . . . . . . . . . .  4
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  CSO enabled PCE Architecture . . . . . . . . . . . . . . . . .  6
   4.  Path Computation and Setup Procedure . . . . . . . . . . . . .  9
     4.1.  Path Setup Using NMS . . . . . . . . . . . . . . . . . . . 10
     4.2.  Path Setup Using Centralized Control Plane . . . . . . . . 11
     4.3.  Path Setup using PCE . . . . . . . . . . . . . . . . . . . 12
   5.  Other Consideration  . . . . . . . . . . . . . . . . . . . . . 13
     5.1.  Inter-domain . . . . . . . . . . . . . . . . . . . . . . . 13
       5.1.1.  One Application Domain with Multiple Network
               Domains  . . . . . . . . . . . . . . . . . . . . . . . 13
       5.1.2.  Multiple Application Domains with Multiple Network
               Domains  . . . . . . . . . . . . . . . . . . . . . . . 14
         5.1.2.1.  ACG talks to multiple NCGs . . . . . . . . . . . . 14
         5.1.2.2.  ACG talks to the primary NCG, which talks to
                   the other NCG of different domains . . . . . . . . 15
     5.2.  Bottleneck . . . . . . . . . . . . . . . . . . . . . . . . 16
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 16
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 17
   8.  Manageability Considerations . . . . . . . . . . . . . . . . . 17
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 17
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 17
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 17

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