Framework for GMPLS and PCE Control of G.709 Optical Transport Networks
draft-ietf-ccamp-gmpls-g709-framework-14

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Document Type Active Internet-Draft (ccamp WG)
Last updated 2013-09-12 (latest revision 2013-08-02)
Replaces draft-zhang-ccamp-gmpls-g709-framework
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Network Working Group                                   Fatai Zhang, Ed. 
Internet Draft                                                    Dan Li 
Category: Informational                                           Huawei 
                                                                  Han Li 
                                                                    CMCC 
                                                               S.Belotti 
                                                          Alcatel-Lucent 
                                                           D. Ceccarelli 
                                                                Ericsson 
Expires: February 2, 2014                                 August 2, 2013 
                                                                        
                                    
                 Framework for GMPLS and PCE Control of  
                    G.709 Optical Transport Networks 
                                    
               draft-ietf-ccamp-gmpls-g709-framework-14.txt 

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Abstract 
 
   This document provides a framework to allow the development of 
   protocol extensions to support Generalized Multi-Protocol Label 
   Switching (GMPLS) and Path Computation Element (PCE) control of 

 
 
 
Zhang                  Expires February 2014                   [Page 1] 


draft-ietf-ccamp-gmpls-g709-framework-14.txt                August 2013 
    

   Optical Transport Networks (OTN) as specified in ITU-T Recommendation 
   G.709 as published in 2012. 

    

Table of Contents 

    
   1. Introduction .................................................. 2 
   2. Terminology ................................................... 3 
   3. G.709 Optical Transport Network ............................... 4 
      3.1. OTN Layer Network ........................................ 4 
         3.1.1. Client signal mapping ............................... 5 
         3.1.2. Multiplexing ODUj onto Links ........................ 6 
            3.1.2.1. Structure of MSI information ................... 8 
   4. Connection management in OTN .................................. 9 
      4.1. Connection management of the ODU ........................ 10 
   5. GMPLS/PCE Implications ....................................... 12 
      5.1. Implications for Label Switch Path (LSP) Hierarchy ...... 12 
      5.2. Implications for GMPLS Signaling ........................ 13 
      5.3. Implications for GMPLS Routing .......................... 15 
      5.4. Implications for Link Management Protocol ............... 17 
      5.5. Implications for Control Plane Backward Compatibility ... 18 
      5.6. Implications for Path Computation Elements .............. 19 
      5.7. Implications for Management of GMPLS Networks ........... 19 
   6. Data Plane Backward Compatibility Considerations ............. 20 
   7. Security Considerations ...................................... 20 
   8. IANA Considerations .......................................... 21 
   9. Acknowledgments .............................................. 21 
   10. References .................................................. 21 
      10.1. Normative References ................................... 21 
      10.2. Informative References ................................. 23 
   11. Authors' Addresses .......................................... 24 
   12. Contributors ................................................ 25 
 
 
1. Introduction 

   Optical Transport Networks (OTN) has become a mainstream layer 1 
   technology for the transport network. Operators want to introduce 
   control plane capabilities based on GMPLS to OTN, to realize the 
   benefits associated with a high-function control plane (e.g., 
   improved network resiliency, resource usage efficiency, etc.). 

   GMPLS extends Multi-Protocol Label Switching (MPLS) to encompass time 
   division multiplexing (TDM) networks (e.g., Synchronous Optical 
   NETwork (SONET)/ Synchronous Digital Hierarchy (SDH), Plesiochronous 
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