ietf-te-topology-state.yang

module ietf-te-topology-state {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-te-topology-state";

  prefix "tet-s";

  import ietf-te-types {
    prefix "te-types";
    reference
      "I-D.ietf-teas-yang-te-types: Traffic Engineering Common YANG
       Types";
  }

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

  import ietf-network-state {
    prefix "nw-s";
    reference "RFC 8345: A YANG Data Model for Network Topologies";
  }

  import ietf-network-topology-state {
    prefix "nt-s";
    reference "RFC 8345: A YANG Data Model for Network Topologies";
  }

  organization
    "IETF Traffic Engineering Architecture and Signaling (TEAS)
     Working Group";

  contact
    "WG Web:   <http://tools.ietf.org/wg/teas/>
     WG List:  <mailto:teas@ietf.org>

     Editor:   Xufeng Liu
               <mailto:xufeng.liu.ietf@gmail.com>

     Editor:   Igor Bryskin
               <mailto:Igor.Bryskin@huawei.com>

     Editor:   Vishnu Pavan Beeram
               <mailto:vbeeram@juniper.net>

     Editor:   Tarek Saad
               <mailto:tsaad@cisco.com>

     Editor:   Himanshu Shah
               <mailto:hshah@ciena.com>

     Editor:   Oscar Gonzalez De Dios
               <mailto:oscar.gonzalezdedios@telefonica.com>";

  description
    "TE topology state model.

     Copyright (c) 2019 IETF Trust and the persons identified as
     authors of the code.  All rights reserved.

     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).

     This version of this YANG module is part of RFC XXXX; see the
     RFC itself for full legal notices.";

  revision "2019-02-07" {
    description "Initial revision";
    reference "RFC XXXX: YANG Data Model for TE Topologies";
  // RFC Ed.: replace XXXX with actual RFC number and remove
  // this note
  }

  /*
   * Groupings
   */
  grouping te-node-connectivity-matrix-attributes {
    description
      "Termination point references of a connectivity matrix entry.";
    container from {
      description
        "Reference to source link termination point.";
      leaf tp-ref {
        type leafref {
          path "../../../../../../nt-s:termination-point/nt-s:tp-id";
        }
        description
          "Relative reference to a termination point.";
      }
      uses te-types:label-set-info;
    }
    container to {
      description
        "Reference to destination link termination point.";
      leaf tp-ref {
        type leafref {
          path "../../../../../../nt-s:termination-point/nt-s:tp-id";
        }
        description
          "Relative reference to a termination point.";
      }
      uses te-types:label-set-info;
    }
    uses tet:connectivity-matrix-entry-path-attributes;
  } // te-node-connectivity-matrix-attributes

  grouping te-node-tunnel-termination-point-llc-list {
    description
      "Local link connectivity list of a tunnel termination
       point on a TE node.";
    list local-link-connectivity {
      key "link-tp-ref";
      description
        "The termination capabilities between
         tunnel-termination-point and link termination-point.
         The capability information can be used to compute
         the tunnel path.
         The Interface Adjustment Capability Descriptors (IACD)
         (defined in RFC 6001) on each link-tp can be derived from
         this local-link-connectivity list.";
      reference
        "RFC 6001: Generalized MPLS (GMPLS) Protocol Extensions
         for Multi-Layer and Multi-Region Networks (MLN/MRN).";

      leaf link-tp-ref {
        type leafref {
          path "../../../../../nt-s:termination-point/nt-s:tp-id";
        }
        description
          "Link termination point.";
      }
      uses te-types:label-set-info;
      uses tet:connectivity-matrix-entry-path-attributes;
    } // local-link-connectivity
  } // te-node-tunnel-termination-point-config

  /*
   * Data nodes
   */
  augment "/nw-s:networks/nw-s:network/nw-s:network-types" {
    description
      "Introduce new network type for TE topology.";
    container te-topology {
      presence "Indicates TE topology.";
      description
        "Its presence identifies the TE topology type.";
    }
  }

  augment "/nw-s:networks" {
    description
      "Augmentation parameters for TE topologies.";
    uses tet:te-topologies-augment;
  }

  augment "/nw-s:networks/nw-s:network" {
    when "nw-s:network-types/tet-s:te-topology" {
      description
        "Augmentation parameters apply only for networks with
         TE topology type.";
    }
    description
      "Configuration parameters for TE topology.";
    uses tet:te-topology-augment;
  }

  augment "/nw-s:networks/nw-s:network/nw-s:node" {
    when "../nw-s:network-types/tet-s:te-topology" {
      description
        "Augmentation parameters apply only for networks with
         TE topology type.";
    }
    description
      "Configuration parameters for TE at node level.";
    leaf te-node-id {
      type te-types:te-node-id;
      description
        "The identifier of a node in the TE topology.
         A node is specific to a topology to which it belongs.";
    }
    container te {
      must "../te-node-id" {
        description
          "te-node-id is mandatory.";
      }
      must "count(../nw-s:supporting-node)<=1" {
        description
          "For a node in a TE topology, there cannot be more
           than 1 supporting node. If multiple nodes are abstracted,
           the underlay-topology is used.";
      }
      presence "TE support.";
      description
        "Indicates TE support.";
      uses tet:te-node-augment;
    } // te
  }

  augment "/nw-s:networks/nw-s:network/nt-s:link" {
    when "../nw-s:network-types/tet-s:te-topology" {
      description
        "Augmentation parameters apply only for networks with
         TE topology type.";
    }
    description
      "Configuration parameters for TE at link level.";
    container te {
      must "count(../nt-s:supporting-link)<=1" {
        description
          "For a link in a TE topology, there cannot be more
           than 1 supporting link. If one or more link paths are
           abstracted, the underlay is used.";
      }
      presence "TE support.";
      description
        "Indicates TE support.";
      uses tet:te-link-augment;
    } // te
  }

  augment "/nw-s:networks/nw-s:network/nw-s:node/"
        + "nt-s:termination-point" {
    when "../../nw-s:network-types/tet-s:te-topology" {
      description
        "Augmentation parameters apply only for networks with
         TE topology type.";
    }
    description
      "Configuration parameters for TE at termination point level.";
    uses tet:te-termination-point-augment;
  }

  augment
    "/nw-s:networks/nw-s:network/nt-s:link/te/bundle-stack-level/"
    + "bundle/bundled-links/bundled-link" {
    when "../../../../nw-s:network-types/tet-s:te-topology" {
      description
        "Augmentation parameters apply only for networks with
         TE topology type.";
    }
    description
      "Augment TE link bundled link.";
    leaf src-tp-ref {
      type leafref {
        path "../../../../../nw-s:node[nw-s:node-id = "
          + "current()/../../../../nt-s:source/"
          + "nt-s:source-node]/"
          + "nt-s:termination-point/nt-s:tp-id";
        require-instance true;
      }
      description
        "Reference to another TE termination point on the
         same source node.";
    }
    leaf des-tp-ref {
      type leafref {
        path "../../../../../nw-s:node[nw-s:node-id = "
          + "current()/../../../../nt-s:destination/"
          + "nt-s:dest-node]/"
          + "nt-s:termination-point/nt-s:tp-id";
        require-instance true;
      }
      description
        "Reference to another TE termination point on the
         same destination node.";
    }
  }

  augment
    "/nw-s:networks/nw-s:network/nw-s:node/te/"
    + "information-source-entry/connectivity-matrices/"
    + "connectivity-matrix" {
    when "../../../../../nw-s:network-types/tet-s:te-topology" {
      description
        "Augmentation parameters apply only for networks with
         TE topology type.";
    }
    description
      "Augment TE node connectivity-matrix.";
    uses te-node-connectivity-matrix-attributes;
  }

  augment
    "/nw-s:networks/nw-s:network/nw-s:node/te/te-node-attributes/"
    + "connectivity-matrices/connectivity-matrix" {
    when "../../../../../nw-s:network-types/tet-s:te-topology" {
      description
        "Augmentation parameters apply only for networks with
         TE topology type.";
    }
    description
      "Augment TE node connectivity-matrix.";
    uses te-node-connectivity-matrix-attributes;
  }

  augment
    "/nw-s:networks/nw-s:network/nw-s:node/te/"
    + "tunnel-termination-point/local-link-connectivities" {
    when "../../../../nw-s:network-types/tet-s:te-topology" {
      description
        "Augmentation parameters apply only for networks with
         TE topology type.";
    }
    description
      "Augment TE node tunnel termination point LLCs
      (Local Link Connectivities).";
    uses te-node-tunnel-termination-point-llc-list;
  }
}