module ieee802-ethernet-interface-half-duplex {

    yang-version 1.1;

    namespace
      "urn:ieee:std:802.3:yang:ieee802-ethernet-interface-half-duplex";

    prefix ieee802-eth-half-duplex;

    import ietf-yang-types {
      prefix yang;
      reference
        "IETF RFC 6991";


    }
    import ietf-interfaces {
      prefix if;
      reference
        "IETF RFC 8343";


    }
    import iana-if-type {
      prefix ianaift;
      reference
        "http://www.iana.org/assignments/yang-parameters/
        iana-if-type@2018-07-03.yang";


    }
    import ieee802-ethernet-interface {
      prefix ieee802-eth-if;
    }

    organization
      "IEEE Std 802.3 Ethernet Working Group
     Web URL: http://www.ieee802.org/3/";

    contact
      "Web URL: http://www.ieee802.org/3/";

    description
      "This module contains YANG definitions for configuring Ethernet 
     interfaces that are deprecated, and are no longer
     widely used in the industry. The definitions are maintained for
     backwards compatibility purposes, but the general expectation is
     that this module is not anticipated to be widely implemented.";

    revision "2019-06-21" {
      description "Initial revision.";
      reference
        "IEEE Std 802.3-2018, unless dated explicitly";

    }


    feature dynamic-rate-control {
      description
        "This feature indicates that the device supports Ethernet
       interfaces lowering the average data rate of the MAC sublayer,
       with frame granularity, by using Rate Control to dynamically
       increase the inter-packet gap for some types of Ethernet
       interface.
       Only valid for Ethernet interfaces operating at speeds (data rates)
       above 1000 Mb/s.";
      reference
        "IEEE Std 802.3, 30.3.1.1.33 aRateControlAbility";

    }

    feature csma-cd {
      description
        "This feature indicates that the device supports Ethernet
       interfaces running at half-duplex using CSMA/CD.";
    }

    typedef dynamic-rate-control-type {
      type enumeration {
        enum "disabled" {
          value 0;
          description
            "Dynamic rate control is disabled";
        }
        enum "sonet-oc192" {
          value 2;
          description
            "Dynamic rate control is enabled for a 10 Gb/s Ethernet
           interface to SONET/SDH OC192/STM64.";
        }
      }
      default 'disabled';
      description
        "Allowed values for dynamic-rate-control.";
      reference
        "IEEE Std 802.3, 4.4.2 ipgStretchRatio and 30.3.1.1.34
        aRateControlStatus";

    }
  }  // module ieee802-ethernet-interface-half-duplex