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Routing and Wavelength Assignment Information Model for Wavelength Switched Optical Networks
RFC 7446

Document type: RFC - Informational (February 2015; No errata)
Document stream: IETF
Last updated: 2015-02-12
Other versions: plain text, pdf, html

IETF State: Submitted to IESG for Publication
Consensus: Yes
Document shepherd: Lou Berger
Shepherd Write-Up: Last changed 2014-09-30

IESG State: RFC 7446 (Informational)
IANA Action State: No IC
Responsible AD: Adrian Farrel
Send notices to: ccamp-chairs@ietf.org, draft-ietf-ccamp-rwa-info@ietf.org

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

Abstract

   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
   http://www.rfc-editor.org/info/rfc7446.

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 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
   to this document.  Code Components extracted from this document must
   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
   2. Terminology .....................................................3
   3. Routing and Wavelength Assignment Information Model .............3
      3.1. Dynamic and Relatively Static Information ..................4
   4. Node Information (General) ......................................4
      4.1. Connectivity Matrix ........................................5
   5. Node Information (WSON Specific) ................................5
      5.1. Resource Accessibility/Availability ........................7
      5.2. Resource Signal Constraints and Processing Capabilities ...11
      5.3. Compatibility and Capability Details ......................12
           5.3.1. Shared Input or Output Indication ..................12
           5.3.2. Optical Interface Class List .......................12
           5.3.3. Acceptable Client Signal List ......................13
           5.3.4. Processing Capability List .........................13
   6. Link Information (General) .....................................13
      6.1. Administrative Group ......................................14
      6.2. Interface Switching Capability Descriptor .................14
      6.3. Link Protection Type (for This Link) ......................14
      6.4. Shared Risk Link Group Information ........................14
      6.5. Traffic Engineering Metric ................................15
      6.6. Port Label Restrictions ...................................15
           6.6.1. Port-Wavelength Exclusivity Example ................17
   7. Dynamic Components of the Information Model ....................18
      7.1. Dynamic Link Information (General) ........................19
      7.2. Dynamic Node Information (WSON Specific) ..................19
   8. Security Considerations ........................................19
   9. References .....................................................20

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