module huawei-ifm-fr {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-ifm-fr";

    prefix ifm-fr;

    import huawei-ifm {
      prefix ifm;
    }
    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 "Frame relay protocol.";

    revision "2019-12-25" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "fr";

    typedef encapsulation-format {
      type enumeration {
        enum "ietf" {
          value 19;
          description "IETF.";
        }
        enum "nonstandard" {
          value 20;
          description "Nonstandard.";
        }
      }
      description
        "FR interface encapsulation format.";
    }

    typedef lmi-type {
      type enumeration {
        enum "ansi" {
          value 0;
          description "LMI ANSI.";
        }
        enum "q933a" {
          value 1;
          description "LMI Q933A.";
        }
        enum "nonstandard" {
          value 2;
          description "LMI nonstandard.";
        }
      }
      description "FR interface LMI type.";
    }

    typedef fr-type {
      type enumeration {
        enum "dte" {
          value 1;
          description "FR DTE.";
        }
        enum "dce" {
          value 2;
          description "FR DCE.";
        }
        enum "nni" {
          value 3;
          description "FR NNI.";
        }
      }
      description "FR interface type.";
    }

    augment /ifm:ifm/ifm:interfaces/ifm:interface {
      description
        "Configure extend attributes on the interface.";
      container fr-encapsulation {
        when
          "../ifm:class='main-interface' and ../ifm:type='Pos' and ../ifm:link-protocol='fr'";
        description
          "Configure frame relay interface encapsulation format.";
        leaf encapsulation {
          type encapsulation-format;
          default "ietf";
          description
            "FR interface encapsulation format.";
        }
      }  // container fr-encapsulation
    }
  }  // module huawei-ifm-fr