module gen-tunnel {

    yang-version 1;

    namespace
      "http://example.com/gen-tunnel";

    prefix tunnel;

    import ietf-yang-types {
      prefix yang;
    }
    import ietf-inet-types {
      prefix inet;
    }
    import ietf-interfaces {
      prefix if;
    }
    import iana-if-type {
      prefix ianaift;
    }

    organization "IETF Netmod Working Group";

    contact "wangzitao@huawei.com";

    description
      "This module defines ietf tunnel yang data model";

    revision "2015-06-09" {
      description
        "Initial revision. - 01 version";
      reference
        "draft-wwz-netmod-yang-tunnel-model-00";

    }


    identity technology-types {
      description
        "this is the base identity of technology types which are
      IP, GRE, MPLS, etc";
    }

    identity ipv4 {
      base technology-types;
      description "technology of ipv4";
    }

    identity ipv6 {
      base technology-types;
      description "technology of ipv6";
    }

    identity encapsulation-type {
      description
        "The encapsulation method used by a tunnel
 which are direct, GRE, 6to4, 6over4, IPsec, etc.";
    }

    identity direct {
      base encapsulation-type;
      description "no intermediate header.";
    }

    identity endpoint-type {
      description
        "this is the base identity of tunnel type which are CE, PE, etc.";
    }
  }  // module gen-tunnel