draft-ietf-ccamp-rwa-wson-framework-08.txt   draft-ietf-ccamp-rwa-wson-framework-09.txt 
Network Working Group Y. Lee (ed.) Network Working Group Y. Lee (ed.)
Internet Draft Huawei Internet Draft Huawei
Intended status: Informational G. Bernstein (ed.) Intended status: Informational G. Bernstein (ed.)
Expires: June 2011 Grotto Networking Expires: July 2011 Grotto Networking
Wataru Imajuku Wataru Imajuku
NTT NTT
December 17, 2010 January 10, 2011
Framework for GMPLS and PCE Control of Wavelength Switched Optical Framework for GMPLS and PCE Control of Wavelength Switched Optical
Networks (WSON) Networks (WSON)
draft-ietf-ccamp-rwa-wson-framework-08.txt draft-ietf-ccamp-rwa-wson-framework-09.txt
Abstract Abstract
This document provides a framework for applying Generalized Multi- This document provides a framework for applying Generalized Multi-
Protocol Label Switching (GMPLS) and the Path Computation Element Protocol Label Switching (GMPLS) and the Path Computation Element
(PCE) architecture to the control of wavelength switched optical (PCE) architecture to the control of wavelength switched optical
networks (WSON). In particular, it examines Routing and Wavelength networks (WSON). In particular, it examines Routing and Wavelength
Assignment (RWA) of optical paths. Assignment (RWA) of optical paths.
This document focuses on topological elements and path selection This document focuses on topological elements and path selection
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time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
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The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
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This Internet-Draft will expire on June 17, 2009. This Internet-Draft will expire on June 10, 2009.
Copyright Notice Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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7. Security Considerations.......................................46 7. Security Considerations.......................................46
8. IANA Considerations...........................................47 8. IANA Considerations...........................................47
9. Acknowledgments...............................................47 9. Acknowledgments...............................................47
10. References...................................................48 10. References...................................................48
10.1. Normative References....................................48 10.1. Normative References....................................48
10.2. Informative References..................................49 10.2. Informative References..................................49
11. Contributors.................................................52 11. Contributors.................................................52
Author's Addresses...............................................53 Author's Addresses...............................................53
Intellectual Property Statement..................................53 Intellectual Property Statement..................................53
Disclaimer of Validity...........................................54 Disclaimer of Validity...........................................54
12. Appendix A Revision History..................................54 12. Appendix A Revision History........Error! Bookmark not defined.
1. Introduction 1. Introduction
Wavelength Switched Optical Networks (WSONs) are constructed from Wavelength Switched Optical Networks (WSONs) are constructed from
subsystems that include Wavelength Division Multiplexed (WDM) links, subsystems that include Wavelength Division Multiplexed (WDM) links,
tunable transmitters and receivers, Reconfigurable Optical Add/Drop tunable transmitters and receivers, Reconfigurable Optical Add/Drop
Multiplexers (ROADM), wavelength converters, and electro-optical Multiplexers (ROADM), wavelength converters, and electro-optical
network elements. A WSON is a WDM-based optical network in which network elements. A WSON is a WDM-based optical network in which
switching is performed selectively based on the center wavelength of switching is performed selectively based on the center wavelength of
an optical signal. an optical signal.
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WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY
WARRANTY THAT THE USE OF THE INFORMATION THEREIN WILL NOT INFRINGE WARRANTY THAT THE USE OF THE INFORMATION THEREIN WILL NOT INFRINGE
ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. FOR A PARTICULAR PURPOSE.
Acknowledgment Acknowledgment
Funding for the RFC Editor function is currently provided by the Funding for the RFC Editor function is currently provided by the
Internet Society. Internet Society.
12. Appendix A Revision History
This appendix to be removed before publication as an RFC.
A.1 Changes from 00
o Added new first level section on modeling examples and control
plane use cases.
o Added new third level section on wavelength converter pool
modeling
o Editorial clean up of English and updated references.
A.2 Changes from 01
Fixed error in wavelength converter pool example.
A.3 Changes from 02
Updated the abstract to emphasize the focus of this draft and
differentiate it from WSON impairment [WSON-Imp] and WSON
compatibility [WSON-Compat] drafts.
Added references to [WSON-Imp] and [WSON-Compat].
Updated the introduction to explain the relationship between this
document and the [WSON-Imp] and [WSON-Compat] documents.
In section 3.1 removed discussion of optical impairments in fibers.
Merged section 3.2.2 and section 3.2.3. Deferred much of the
discussion of signal types and standards to [WSON-Compat].
In section 3.4 on Wavelength converters removed paragraphs dealing
with signal compatibility discussion as this is addressed in [WSON-
Compat].
In section 6.1 removed discussion of signaling extensions to deal
with different WSON signal types. This is deferred to [WSON-Compat].
In section 6 removed discussion of "Need for Wavelength Specific
Maximum Bandwidth Information".
In section 6 removed discussion of "Relationship to link bundling and
layering".
In section 6 removed discussion of "Computation Architecture
Implications" as this material was redundant with text that occurs
earlier in the document.
In section 6 removed discussion of "Scaling Implications" as this
material was redundant with text that occurs earlier in the document.
A.4 Changes from 03
In Section 3.3.1 added 4-degree ROADM example and its connectivity
matrix.
A.5 Changes from 04
Added and enhanced sections on signal type and network element
compatibility.
Merged section 3.2.1 into section 3.2.
Created new section 3.3 on Optical signals with material from [WSON-
Compat].
Created new section 3.5 on Electro-Optical systems with material from
[WSON-Compat].
Created new section 3.7 on Characterizing Electro-Optical Network
Elements with material from [WSON-Compat].
Created new section 5.5 on Electro-Optical Networking Scenarios with
material from [WSON-Compat].
Created new section 6.1.2 on WSON Signals and Network Element
Processing with material from [WSON-Compat].
Created new section 6.3.2. Electro-Optical Related PCEP Extensions
with material from [WSON-Compat].
A.6 Changes from 05
Removal of Section 1.2; Removal of section on optical path temporal
characteristics; Removal of details on wavelength assignment
algorithms; Removal of redundant summary in section 6.
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