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CCAMP Working Group                                     Y. Lee (Editor)
                                                               D. Dhody
                                                               X. Zhang
Internet Draft                                                   Huawei
Intended status: Standard Track                                  A. Guo
                                                                 Huawei
                                                               V. Lopez
                                                             Telefonica
                                                                D. King
                                                        U. of Lancaster
                                                                 B. Yoon
                                                                    ETRI

Expires: January 8, 2017                                   July 8, 2016

                A Yang Data Model for WSON Optical Networks


                     draft-ietf-ccamp-wson-yang-02.txt


Abstract

   This document provides a YANG data model for the routing and
   wavelength assignment (RWA) TE topology in wavelength switched
   optical networks (WSONs).



Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with
   the provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on October 8, 2016.

Copyright Notice
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   Copyright (c) 2016 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...................................................2
   2. YANG Model (Tree Structure)....................................3
   3. WSON-RWA YANG Model............................................4
   4. Security Considerations.......................................10
   5. IANA Considerations...........................................10
   6. Acknowledgments...............................................10
   7. References....................................................11
      7.1. Normative References.....................................11
      7.2. Informative References...................................11
   8. Contributors..................................................11
   Authors' Addresses...............................................11

1. Introduction

   This document provides a YANG data model for the routing and
   wavelength assignment (RWA) Traffic Engineering (TE) topology in
   wavelength switched optical networks (WSONs). The YANG model
   described in this document is a WSON technology-specific Yang model
   based on the information model developed in [RFC7446] and the two
   encoding documents [RFC7581] and [RFC7579] that developed protocol
   independent encodings based on [RFC7446]. This document augments the
   generic TE topology draft [TE-TOPO].

   What is not in scope of this document is both impairment-aware WSON
   and flex-grid.




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2. YANG Model (Tree Structure)

module: ietf-wson-topology
augment /nd:networks/nd:network/nd:network-types/tet:te-topology:
   +--rw wson-topology!
augment /nd:networks/nd:network/nd:node/tet:te/tet:config/tet:te-node-attributes/tet:connectivity-matrix:
   +--rw wson-matrix
      +--rw device-type?        devicetype
      +--rw dir?                directionality
      +--rw matrix-interface* [in-port-id]
         +--rw in-port-id     wson-interface-ref
         +--rw out-port-id?   wson-interface-ref
augment /nd:networks/nd:network/lnk:link/tet:te/tet:config:
   +--rw wavelength-available-bitmap*   boolean
augment /nd:networks/nd:network/nd:node/tet:te/tet:config:
   +--rw resource-pool* [resource-pool-id]
      +--rw resource-pool-id    uint32
      +--rw pool-state?         boolean
      +--rw matrix-interface* [in-port-id]
         +--rw in-port-id     wson-interface-ref
         +--rw out-port-id?   wson-interface-ref




















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3. WSON-RWA YANG Model


   <CODE BEGINS> file "ietf-wson-topology@2016-07-08.yang"

   module   ietf-wson-topology {
      namespace "urn:ietf:params:xml:ns:yang:ietf-wson-topology";

      prefix wson;

      import ietf-network {
      prefix "nd";
      }

      import ietf-network-topology {
      prefix "lnk";
      }

      import ietf-inet-types {
      prefix "inet";
      }

      import ietf-te-topology {
      prefix "tet";
      }

      organization
         "IETF CCAMP Working Group";

      contact
         "Editor:   Young Lee  <leeyoung@huawei.com>";

      description
         "This module contains a collection of YANG definitions for
         RWA WSON.

         Copyright (c) 2015 IETF Trust and the persons identified as
         authors of the code.  All rights reserved.



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         Redistribution and use in source and binary forms, with or
         without modification, is permitted pursuant to, and subject
         to the license terms contained in, the Simplified BSD
         License set forth in Section 4.c of the IETF Trust's Legal
         Provisions Relating to IETF Documents
         (http://trustee.ietf.org/license-info).";

      revision 2015-10-14 {
         description
            "version 2.";

      reference
         "RFC XXX: A Yang Data Model for WSON Optical Networks ";
      }

      typedef wson-topology-id {
         type inet:uri;
         description
            "The WSON Topology ID";
      }

      typedef wson-node-id {
         type inet:ip-address;
         description
            "The WSON Node ID";
      }

      typedef devicetype {
         type enumeration {
            enum adm {
               value 1;
               description
                  "Device is ADM";
            }

            enum roadm {
               value 2;
               description
                  "Device is ROAMD/OXC";
            }


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         }
         description
            "device type: fixed (ADM) or switched (ROADM/OXC)";
      }

      typedef directionality {
         type enumeration {
            enum bidir {
               value 0;
               description
                  "bi-directional";
            }
            enum input {
               value 1;
               description
                  "input direction";
            }
            enum output {
               value 2;
               description
                  "output direction";
            }
         }
         description
            "The directionality of link set";
      }



      typedef wson-interface-ref {
         type leafref {
         path "/nd:networks/nd:network/lnk:link/lnk:link-id";
         }
         description
            "This type is used by data models that need to
            reference WSON interface.";
      }

       grouping wson-topology-type {
          description
            "Identifies the wson topology type.";


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          container wson-topology {
            presence "Indicates WSON topology.";
            description
              "Its presence identifies the WSON topology type.";
          }
        } // wson-topology-type

      augment "/nd:networks/nd:network/nd:network-types/tet:te-
   topology" {

         description "Augment network-types to include WSON topology";
         uses wson-topology-type {
            description
               "An empty WSON container to identify
               the topology type.";
         }
      }

      augment "/nd:networks/nd:network/nd:node/tet:te/tet:config"
            +"/tet:te-node-attributes"
            +"/tet:connectivity-matrix" {
         when "nd:network-types/tet:te-topology/wson-topology" {
            description
               "This augment is only valid for WSON.";
         }
         description "WSON Connectivity Matrix augmentation.";
         container wson-matrix{
            description "WSON specific Matrix.";
            leaf device-type {
               type devicetype;
               description
                  "device type: fixed (ADM) or switched
                  (ROADM/OXC)";
            }
            leaf dir {
               type directionality;
               description
                  "bi-directionality or input or output
                  of link set";
            }



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            list matrix-interface {
               key "in-port-id";

               description
                  "matrix-interface describes input-ports
                  and out-ports around a connectivity
                  matrix";

               leaf in-port-id {
                  type wson-interface-ref;
                  description
                     "The reference to in-port";
               }

               leaf out-port-id {
                  type wson-interface-ref;
                  description
                     "The reference to out-port";
               }
            }
         }
      }

      augment "/nd:networks/nd:network/lnk:link/tet:te/tet:config" {

         when "nd:network-types/tet:te-topology/wson-topology" {

         description
            "This augment is only valid for WSON.";
         }
         description "WSON Link augmentation.";

         leaf-list wavelength-available-bitmap {
            type boolean;
            description
               "array of bits (i.e., bitmap) that indicates
               if a wavelength is available or not on each
               channel.";
         }
      }



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      augment "/nd:networks/nd:network/nd:node/tet:te/tet:config" {
         when "nd:network-types/tet:te-topology/wson-topology" {
         description
            "This augment is only valid for WSON.";
         }
         description "WSON Node augmentation.";

         list resource-pool {
            key "resource-pool-id";
            description
               "The resource pool list";

            leaf resource-pool-id {
               type uint32;
               description
                  "The resource pool ID";
            }

            leaf pool-state {
               type boolean;
               description
                  "TRUE is state UP; FALSE is state down";
            }

            list matrix-interface {
               key "in-port-id";

               description
                  "pool is described as matrix-interface
                  with input-ports and output-ports
                  around the pool";

               leaf in-port-id {
                  type wson-interface-ref;
                  description
                     "The reference to in-interface";
               }

               leaf out-port-id {
                  type wson-interface-ref;
                  description


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                     "The reference to out-interface";
               }
            }
         }
      }
   }

   <CODE ENDS>



4. Security Considerations

   TDB



5. IANA Considerations

   TDB

6. Acknowledgments

   This document was prepared using 2-Word-v2.0.template.dot.
























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7. References

   7.1. Normative References

   [RFC7446]  Y. Lee, G. Bernstein, D. Li, W. Imajuku, "Routing and
             Wavelength Assignment Information Model for Wavelength
             Switched Optical Networks", RFC 7446, Feburary 2015.

   [RFC7579]   G. Bernstein, Y. Lee, D. Li, W. Imajuku, "General
             Network Element Constraint Encoding for GMPLS Controlled
             Networks", RFC 7579, June 2015.

   [RFC7581]  G. Bernstein, Y. Lee, D. Li, W. Imajuku, "Routing and
             Wavelength Assignment Information Encoding for Wavelength
             Switched Optical Networks", RFC 7581, June 2015.

   [TE-TOPO] X. Liu, et al., "YANG Data Model for TE Topologies", work
             in progress: draft-ietf-teas-yang-te-topo.



   7.2. Informative References



8. Contributors


Authors' Addresses

   Young Lee (ed.)
   Huawei Technologies
   5340 Legacy Drive, Building 3
   Plano, TX 75023
   USA

   Phone: (469) 277-5838
   Email: leeyoung@huawei.com


   Dhruv Dhody
   Huawei Technologies India Pvt. Ltd,
   Near EPIP Industrial Area,  Kundalahalli Village,  Whitefield,
   Bangalore -  560 037 [H1-2A-245]


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   Email: dhruv.dhody@huawei.com

   Xian Zhang
   Huawei Technologies

   Email: zhang.xian@huawei.com

   Aihua Guo
   Huawei Technologies
   Email: aihuaguo@huawei.com

   Victor Lopez
   Telefonica
   Email: victor.lopezalvarez@telefonica.com

   Daniel King
   University of Lancaster
   Email: d.king@lancaster.ac.uk

   Bin Yeong Yoon
   ETRI
   218 Gaijeongro, Yuseong-gu
   Daejeon, Korea
   Email: byyun@etri.re.kr




















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