Routing and Wavelength Assignment Information Encoding for Wavelength Switched Optical Networks
RFC 7581

Document Type RFC - Proposed Standard (June 2015; No errata)
Last updated 2015-10-14
Replaces draft-bernstein-ccamp-wson-encode
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Stream WG state Submitted to IESG for Publication
Document shepherd Lou Berger
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IESG IESG state RFC 7581 (Proposed Standard)
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Internet Engineering Task Force (IETF)                 G. Bernstein, Ed.
Request for Comments: 7581                             Grotto Networking
Category: Standards Track                                    Y. Lee, Ed.
ISSN: 2070-1721                                                    D. Li
                                                                  Huawei
                                                              W. Imajuku
                                                                     NTT
                                                                  J. Han
                                                                  Huawei
                                                               June 2015

       Routing and Wavelength Assignment Information Encoding for
                  Wavelength Switched Optical Networks

Abstract

   A Wavelength Switched Optical Network (WSON) requires certain key
   information fields be made available to facilitate path computation
   and the establishment of Label Switched Paths (LSPs).  The
   information model described in "Routing and Wavelength Assignment
   Information Model for Wavelength Switched Optical Networks" (RFC
   7446) shows what information is required at specific points in the
   WSON.  Part of the WSON information model contains aspects that may
   be of general applicability to other technologies, while other parts
   are specific to WSONs.

   This document provides efficient, protocol-agnostic encodings for the
   WSON-specific information fields.  It is intended that protocol-
   specific documents will reference this memo to describe how
   information is carried for specific uses.  Such encodings can be used
   to extend GMPLS signaling and routing protocols.  In addition, these
   encodings could be used by other mechanisms to convey this same
   information to a Path Computation Element (PCE).

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in 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/rfc7581.

Bernstein, et al.            Standards Track                    [Page 1]
RFC 7581                WSON Information Encoding              June 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.

Bernstein, et al.            Standards Track                    [Page 2]
RFC 7581                WSON Information Encoding              June 2015

Table of Contents

   1. Introduction ....................................................4
      1.1. Terminology ................................................4
      1.2. Conventions Used in This Document ..........................5
   2. Resources, Resource Blocks, and the Resource Pool ...............5
      2.1. Resource Block Set Field ...................................6
   3. Resource Accessibility/Availability .............................7
      3.1. Resource Accessibility Field ...............................7
      3.2. Resource Wavelength Constraints Field ......................9
      3.3. Resource Block Pool State Field ...........................10
      3.4. Resource Block Shared Access Wavelength
           Availability Field ........................................12
   4. Resource Block Information Field ...............................13
      4.1. Optical Interface Class List Subfield .....................15
           4.1.1. ITU-T G.698.1 Application Code Mapping .............17
           4.1.2. ITU-T G.698.2 Application Code Mapping .............18
           4.1.3. ITU-T G.959.1 Application Code Mapping .............20
           4.1.4. ITU-T G.695 Application Code Mapping ...............22
      4.2. Acceptable Client Signal List Subfield ....................23
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