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Routing and Wavelength Assignment Information Model for Wavelength Switched Optical Networks (RFC7446) Disclosure Number: IPCOM000240634D
Original Publication Date: 2015-Feb-01
Included in the Prior Art Database: 2015-Feb-13
Document File: 46 page(s) / 48K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

Y. Lee: AUTHOR [+6]


The purpose of the WSON information model described in this document is to facilitate constrained optical path computation, and as such it is not a general-purpose network management information model. This constraint is frequently referred to as the "wavelength continuity" constraint, and the corresponding constrained optical path computation is known as the Routing and Wavelength Assignment (RWA) problem. Hence, the information model must provide sufficient topology and wavelength restriction and availability information to support this computation. More details on the RWA process and WSON subsystems and their properties can be found in [RFC6163]. The model defined here includes constraints between WSON signal attributes and network elements but does not include optical impairments.

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Internet Engineering Task Force (IETF)                       Y. Lee, Ed. Request for Comments: 7446                                        Huawei Category: Informational                                G. Bernstein, Ed. ISSN: 2070-1721                                        Grotto Networking                                                                    D. Li                                                                   Huawei                                                               W. Imajuku                                                                      NTT                                                            February 2015

           Routing and Wavelength Assignment Information Model                 for Wavelength Switched Optical Networks


   This document provides a model of information needed by the Routing    and Wavelength Assignment (RWA) process in Wavelength Switched    Optical Networks (WSONs).  The purpose of the information described    in this model is to facilitate constrained optical path computation    in WSONs.  This model takes into account compatibility constraints    between WSON signal attributes and network elements but does not    include constraints due to optical impairments.  Aspects of this    information that may be of use to other technologies utilizing a    GMPLS control plane are discussed.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Not all documents    approved by the IESG are a candidate for any level of Internet    Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

 Lee, et al.                   Informational                     [Page 1]
 RFC 7446                 WSON Information Model            February 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 a...