module openconfig-interfaces {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/interfaces";

    prefix oc-if;

    import ietf-interfaces {
      prefix ietf-if;
    }
    import openconfig-yang-types {
      prefix oc-yang;
    }
    import openconfig-types {
      prefix oc-types;
    }
    import openconfig-extensions {
      prefix oc-ext;
    }

    organization "OpenConfig working group";

    contact
      "OpenConfig working group
    netopenconfig@googlegroups.com";

    description
      "Model for managing network interfaces and subinterfaces.  This
    module also defines convenience types / groupings for other
    models to create references to interfaces:

      base-interface-ref (type) -  reference to a base interface
      interface-ref (grouping) -  container for reference to a
        interface + subinterface
      interface-ref-state (grouping) - container for read-only
        (opstate) reference to interface + subinterface

    This model reuses data items defined in the IETF YANG model for
    interfaces described by RFC 7223 with an alternate structure
    (particularly for operational state data) and with
    additional configuration items.

    Portions of this code were derived from IETF RFC 7223.
    Please reproduce this note if possible.

    IETF code is subject to the following copyright and license:
    Copyright (c) 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).";

    revision "2018-01-05" {
      description
        "Add logical loopback to interface.";
      reference
        "2.3.0";

    }

    revision "2017-12-22" {
      description
        "Add IPv4 proxy ARP configuration.";
      reference
        "2.2.0";

    }

    revision "2017-12-21" {
      description
        "Added IPv6 router advertisement configuration.";
      reference
        "2.1.0";

    }

    revision "2017-07-14" {
      description
        "Added Ethernet/IP state data; Add dhcp-client;
      migrate to OpenConfig types modules; Removed or
      renamed opstate values";
      reference
        "2.0.0";

    }

    revision "2017-04-03" {
      description "Update copyright notice.";
      reference
        "1.1.1";

    }

    revision "2016-12-22" {
      description
        "Fixes to Ethernet interfaces model";
      reference
        "1.1.0";

    }

    oc-ext:openconfig-version "2.3.0";

    typedef base-interface-ref {
      type leafref {
        path "/oc-if:interfaces/oc-if:interface/oc-if:name";
      }
      description
        "Reusable type for by-name reference to a base interface.
      This type may be used in cases where ability to reference
      a subinterface is not required.";
    }

    typedef interface-id {
      type string;
      description
        "User-defined identifier for an interface, generally used to
      name a interface reference.  The id can be arbitrary but a
      useful convention is to use a combination of base interface
      name and subinterface index.";
    }
  }  // module openconfig-interfaces