module huawei-evpl {

    yang-version 1;

    namespace "urn:huawei:yang:huawei-evpl";

    prefix evpl;

    import huawei-ifm {
      prefix ifm;
    }
    import ietf-inet-types {
      prefix inet;
    }
    import huawei-extension {
      prefix ext;
    }

    organization
      "Huawei Technologies Co., Ltd.";

    contact
      "Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: support@huawei.com";

    description
      "Management of Ethernet virtual private line.";

    revision "2020-07-21" {
      description
        "Add node ignore-ac-state.";
      reference
        "Huawei private.";

    }

    revision "2019-03-01" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "evpl";

    typedef evpl-mode {
      type enumeration {
        enum "vxlan-mode" {
          value 0;
          description "VXLAN mode.";
        }
        enum "mpls-mode" {
          value 1;
          status deprecated;
          description "MPLS mode.";
        }
        enum "srv6-mode" {
          value 2;
          status deprecated;
          description "SRv6 mode.";
        }
        enum "none" {
          value 3;
          description "None mode.";
        }
      }
      description
        "The mode of EVPL instance.";
    }

    container evpl {
      description "Management of EVPL.";
      container instances {
        description
          "List of EVPL instances.";
        list instance {
          key "id";
          description
            "Configure attribute of EVPL instance.";
          leaf id {
            type uint32 {
              range "1..16777215";
            }
            description
              "The identification of the EVPL instance.";
          }

          leaf mode {
            ext:operation-exclude "update";
            type evpl-mode;
            mandatory true;
            description
              "The mode of the EVPL instance, that not support modification.";
          }

          container interfaces {
            when "(../mode != 'vxlan-mode')";
            description
              "List of service interfaces that a EVPL instance corresponds.";
            list interface {
              key "name";
              max-elements 1;
              description
                "Configure the service interface that a EVPL instance corresponds.";
              leaf name {
                type leafref {
                  path "/ifm:ifm/ifm:interfaces/ifm:interface/ifm:name";
                }
                must
                  "(/ifm:ifm/ifm:interfaces/ifm:interface[ifm:name=current()]/ifm:type = 'PW-VE' and /ifm:ifm/ifm:interfaces/ifm:interface[ifm:name=current()]/ifm:class != 'main-interface') or (/ifm:ifm/ifm:interfaces/ifm:interface[ifm:name=current()]/ifm:type != 'PW-VE')";
                description
                  "The name of interface.";
              }

              leaf ignore-ac-state {
                type boolean;
                must
                  "(../ignore-ac-state='true' and /ifm:ifm/ifm:interfaces/ifm:interface[ifm:name=current()/../name]/ifm:type != 'PW-VE') or (../ignore-ac-state='false')";
                default "false";
                description
                  "Enable/disable ignore the attachment circuit status on an interface.";
              }
            }  // list interface
          }  // container interfaces

          container peers {
            when "(../mode = 'vxlan-mode')";
            description
              "List of provider edge nodes that a EVPL instance corresponds with VXLAN encapsulation.";
            list peer {
              key "name peer-ip";
              max-elements 1;
              description
                "Configure provider edge node that a EVPL instance corresponds with VXLAN encapsulation.";
              leaf name {
                type leafref {
                  path "/ifm:ifm/ifm:interfaces/ifm:interface/ifm:name";
                }
                must
                  "/ifm:ifm/ifm:interfaces/ifm:interface[ifm:name=current()]/ifm:type = 'PW-VE' and /ifm:ifm/ifm:interfaces/ifm:interface[ifm:name=current()]/ifm:class = 'main-interface'";
                description
                  "The name of interface.";
              }

              leaf peer-ip {
                type inet:ipv4-address-no-zone;
                description
                  "The address of provider edge node.";
              }
            }  // list peer
          }  // container peers

          container evpl-statistics {
            when "(../mode = 'vxlan-mode')";
            description
              "Configure an EVPL instance.";
            leaf statistics-enable {
              type boolean;
              default "false";
              description
                "Enable/disable EVPL message statistical function.";
            }
          }  // container evpl-statistics
        }  // list instance
      }  // container instances
    }  // container evpl
  }  // module huawei-evpl