module ieee802-ethernet-interface {

    yang-version 1.1;

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

    prefix ieee802-eth-if;

    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";


    }

    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 IEEE Std 
     802.3 Ethernet Interfaces.
     In this YANG module, 'Ethernet interface' can be interpreted
     as referring to 'IEEE Std 802.3 compliant Ethernet
     interfaces'.";

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

    }


    typedef eth-if-speed-type {
      type decimal64 {
        fraction-digits 3;
      }
      units "Gb/s";
      description
        "Used to represent the configured, negotiated, or actual speed
       of an Ethernet interface in Gigabits per second (Gb/s),
       accurate to 3 decimal places (i.e., accurate to 1 Mb/s).";
    }

    typedef duplex-type {
      type enumeration {
        enum "full" {
          value 0;
          description "Full duplex.";
        }
        enum "half" {
          value 1;
          description "Half duplex.";
        }
        enum "unknown" {
          value 2;
          description
            "Link is currently disconnected or initializing.";
        }
      }
      default 'full';
      description
        "Used to represent the configured, negotiated, or actual 
       duplex mode of an Ethernet interface.";
      reference
        "IEEE Std 802.3, 30.3.1.1.32, aDuplexStatus";

    }

    typedef pause-fc-direction-type {
      type enumeration {
        enum "disabled" {
          value 0;
          description
            "Flow-control disabled in both ingress and egress
           directions, i.e., PAUSE frames are not transmitted and
           PAUSE frames received in the ingress direction are 
           discarded without processing.";
        }
        enum "ingress-only" {
          value 1;
          description
            "PAUSE frame based flow control is enabled in the ingress 
           direction only, i.e., PAUSE frames may be transmitted to 
           reduce the ingress traffic flow, but PAUSE frames received 
           in the ingress direction are discarded without reducing 
           the egress traffic rate.";
        }
        enum "egress-only" {
          value 2;
          description
            "PAUSE frame based flow control is enabled in the egress 
           direction only, i.e., PAUSE frames are not transmitted, 
           but PAUSE frames received in the ingress direction are 
           processed to reduce the egress traffic rate.";
        }
        enum "bi-directional" {
          value 3;
          description
            "PAUSE frame based flow control is enabled in both ingress 
           and egress directions, i.e., PAUSE frames may be 
           transmitted to reduce the ingress traffic flow, and 
           PAUSE frames received on ingress are processed to reduce 
           the egress traffic rate.";
        }
        enum "undefined" {
          value 4;
          description
            "Link is currently disconnected or initializing.";
        }
      }
      description
        "Used to represent the configured, negotiated, or actual 
       PAUSE frame-based flow control setting.";
      reference
        "IEEE Std 802.3.1, dot3PauseAdminMode and dot3PauseOperMode";

    }

    feature ethernet-pfc {
      description
        "This device supports Ethernet priority flow-control.";
    }

    feature ethernet-pause {
      description
        "This device supports Ethernet PAUSE.";
    }

    augment /if:interfaces/if:interface {
      when
        "derived-from-or-self(if:type, 'ianaift:ethernetCsmacd')" {
        description
          "Applies to all P2P Ethernet interfaces.";
      }
      description
        "Augment interface model with Ethernet interface
       specific configuration nodes.";
      container ethernet {
        description
          "Contains all Ethernet interface related configuration.";
        container auto-negotiation {
          presence
            "The presence of this container indicates that 
           auto-negotiation is supported on this Ethernet 
           interface.";
          description
            "Contains auto-negotiation transmission parameters

           This container contains a data node that allows the 
           advertised duplex value in the negotiation to be 
           restricted. 

           If not specified then the default behavior for the duplex 
           data node is to negotiate all available values for the 
           particular type of Ethernet PHY associated with the
           interface.

           If auto-negotiation is enabled, and PAUSE frame based flow 
           control has not been explicitly configured, then the 
           default PAUSE frame based flow control capabilities that 
           are negotiated allow for bi-directional or egress-only 
           PAUSE frame based flow control.

           If auto-negotiation is enabled, and PAUSE frame based flow 
           control has been explicitly configured, then the 
           configuration settings restrict the values that may be 
           negotiated. However, it should be noted that the protocol 
           does not allow only egress PAUSE frame based flow control 
           to be negotiated without also allowing bi-directional 
           PAUSE frame based flow control.";
          reference
            "IEEE Std 802.3, Clause 28 and Annexes 28A-D";

          leaf enable {
            type boolean;
            default 'true';
            description
              "Controls whether auto-negotiation is enabled or
             disabled.
             For interface types that support auto-negotiation then
             it defaults to being enabled.

             For interface types that do not support auto-negotiation, 
             the related configuration data is ignored.";
          }

          leaf negotiation-status {
            when "../enable = 'true'";
            type enumeration {
              enum "in-progress" {
                value 0;
                description
                  "The auto-negotiation protocol is running and
                 negotiation is currently in-progress.";
              }
              enum "complete" {
                value 1;
                description
                  "The auto-negotiation protocol has completed
                 successfully.";
              }
              enum "failed" {
                value 2;
                description
                  "The auto-negotiation protocol has failed.";
              }
              enum "unknown" {
                value 3;
                description
                  "The auto-negotiation status is not currently known,
                 this could be because it is still negotiating or the
                 protocol cannot run (e.g., if no medium is present).";
              }
              enum "no-negotiation" {
                value 4;
                description
                  "No auto-negotiation is executed. 
                 The auto-negotation function is either not supported 
                 on this interface or has not been enabled.";
              }
            }
            config false;
            description
              "The status of the auto-negotiation protocol.";
            reference
              "IEEE 802.3, 30.6.1.1.4, aAutoNegAutoConfig";

          }
        }  // container auto-negotiation

        leaf duplex {
          type duplex-type;
          description
            "Operational duplex mode of the Ethernet interface.";
          reference
            "IEEE Std 802.3, 30.3.1.1.32 aDuplexStatus";

        }

        leaf speed {
          type eth-if-speed-type;
          units "Gb/s";
          description
            "Operational speed (data rate) of the Ethernet interface.
           The default value is implementation-dependent.";
        }

        container flow-control {
          description
            "Holds the different types of Ethernet PAUSE frame based 
           flow control that can be enabled.";
          container pause {
            if-feature ethernet-pause;
            description
              "IEEE Std 802.3 PAUSE frame based PAUSE frame based flow
             control.";
            reference
              "IEEE Std 802.3, Annex 31B";

            leaf direction {
              type pause-fc-direction-type;
              description
                "Indicates which direction PAUSE frame based flow 
               control is enabled in, or whether it is disabled.
               The default flow-control settings are vendor specific.
               If auto-negotiation is enabled, then PAUSE based
               flow-control is negotiated by default.
               The default value is implementation-dependent.";
            }

            container statistics {
              config false;
              description
                "Contains the number of PAUSE frames received or
               transmitted.";
              leaf in-frames-pause {
                type yang:counter64;
                units "frames";
                description
                  "A count of PAUSE MAC Control frames transmitted on
                 this Ethernet interface.

                 Discontinuities in the values of counters in
                 this container can occur at re-initialization of the
                 management system, and at other times as indicated
                 by the value of the 'discontinuity-time' leaf
                 defined in the ietf-interfaces YANG module 
                 (IETF RFC 8343).";
                reference
                  "IEEE Std 802.3, 30.3.4.3 aPAUSEMACCtrlFramesReceived";

              }

              leaf out-frames-pause {
                type yang:counter64;
                units "frames";
                description
                  "A count of PAUSE MAC Control frames transmitted on
                 this Ethernet interface.

                 Discontinuities in the values of counters in
                 this container can occur at re-initialization of the
                 management system, and at other times as indicated
                 by the value of the 'discontinuity-time' leaf
                 defined in the ietf-interfaces YANG module 
                 (IETF RFC 8343).";
                reference
                  "IEEE Std 802.3, 30.3.4.2
                  aPAUSEMACCtrlFramesTransmitted";

              }
            }  // container statistics
          }  // container pause

          container pfc {
            if-feature ethernet-pfc;
            description
              "IEEE Std 802.3 Priority-based flow control.";
            reference
              "IEEE Std 802.3, Annex 31D";

            leaf enable {
              type boolean;
              description
                "True indicates that IEEE Std 802.3 priority-based 
               flow control is enabled, false indicates that 
               IEEE Std 802.3 priority-based flow control is disabled.
               For interfaces that have auto-negotiation,
               the priority-based flow control is enabled by default.";
            }

            container statistics {
              config false;
              description
                "This container collects all statistics for 
               Ethernet interfaces.";
              leaf in-frames-pfc {
                type yang:counter64;
                units "frames";
                description
                  "A count of PFC MAC Control frames received on this
                 Ethernet interface.

                 Discontinuities in the values of counters in
                 this container can occur at re-initialization of the
                 management system, and at other times as indicated
                 by the value of the 'discontinuity-time' leaf
                 defined in the ietf-interfaces YANG module 
                 (IETF RFC 8343).";
                reference
                  "IEEE Std 802.3.1, dot3HCInPFCFrames";

              }

              leaf out-frames-pfc {
                type yang:counter64;
                units "frames";
                description
                  "A count of PFC MAC Control frames transmitted on
                 this interface.

                 Discontinuities in the values of counters in
                 this container can occur at re-initialization of the
                 management system, and at other times as indicated
                 by the value of the 'discontinuity-time' leaf
                 defined in the ietf-interfaces YANG module 
                 (IETF RFC 8343).";
                reference
                  "IEEE Std 802.3.1, dot3HCInPFCFrames";

              }
            }  // container statistics
          }  // container pfc

          leaf force-flow-control {
            type boolean;
            default 'false';
            description
              "Explicitly forces the local PAUSE frame based flow control
             settings regardless of what has been negotiated.

             Since the auto-negotiation of flow-control settings
             does not allow all sane combinations to be negotiated
             (e.g., consider a device that is only capable of sending
             PAUSE frames connected to a peer device that is only
             capable of receiving and acting on PAUSE frames) and
             failing to agree on the flow-control settings does not
             cause the auto-negotiation to fail completely, then it is
             sometimes useful to be able to explicitly enable
             particular PAUSE frame based flow control settings on 
             the local device regardless of what is being advertised 
             or negotiated.";
            reference
              "IEEE Std 802.3, Table 28B-3";

          }
        }  // container flow-control

        leaf max-frame-length {
          type uint16;
          units "octets";
          config false;
          description
            "This indicates the MAC frame length (including FCS bytes)
           at which frames are dropped for being too long.";
          reference
            "IEEE Std 802.3, 30.3.1.1.37 aMaxFrameLength";

        }

        leaf mac-control-extension-control {
          type boolean;
          config false;
          description
            "A value that identifies the current EXTENSION MAC Control
           function, as specified in IEEE Std 802.3, Annex 31C.";
          reference
            "IEEE Std 802.3, 30.3.8.3 aEXTENSIONMACCtrlStatus
            IEEE Std 802.3.1, dot3ExtensionMacCtrlStatus ";

        }

        leaf frame-limit-slow-protocol {
          type uint64;
          units "f/s";
          default '10';
          config false;
          description
            "The maximum number of Slow Protocol frames of a given
           subtype that can be transmitted in a one second interval.
           The default value is 10.";
          reference
            "IEEE Std 802.3, 30.3.1.1.38 aSlowProtocolFrameLimit";

        }

        container capabilities {
          config false;
          description
            "Container all Ethernet interface specific capabilities.";
          leaf auto-negotiation {
            type boolean;
            description
              "Indicates whether auto-negotiation may be configured on
             this interface.";
          }
        }  // container capabilities

        container statistics {
          config false;
          description
            "Contains statistics specific to Ethernet interfaces.

           Discontinuities in the values of counters in the
           container can occur at re-initialization of the management
           system, and at other times as indicated by the value of
           the 'discontinuity-time' leaf defined in the
           ietf-interfaces YANG module (IETF RFC 8343).";
          container frame {
            description
              "Contains frame statistics specific to Ethernet
             interfaces.

             All octet frame lengths include the 4 byte FCS.

             Error counters are only reported once ... The count
             represented by an instance of this object is incremented
             when the frameCheckError status is returned by the MAC
             service to the LLC (or other MAC user). Received frames
             for which multiple error conditions pertain are,
             according to the conventions of IEEE Std 802.3 Layer
             Management, counted exclusively according to the error
             status presented to the LLC.

             A frame that is counted by an instance of this object is 
             also counted by the corresponding instance of 'in-errors'
             leaf defined in the ietf-interfaces YANG module 
             (IETF RFC 8343).

             Discontinuities in the values of counters in the
             container can occur at re-initialization of the
             management system, and at other times as indicated by
             the value of the 'discontinuity-time' leaf defined in
             the ietf-interfaces YANG module (IETF RFC 8343).";
            leaf in-total-frames {
              type yang:counter64;
              units "frames";
              description
                "The total number of frames (including bad frames)
               received on the Ethernet interface.

               This counter is calculated by summing the following
               IEEE Std 802.3, Clause 30 counters:
               aFramesReceivedOK +
               aFrameCheckSequenceErrors +
               aAlignmentErrors +
               aFrameTooLongErrors +
               aFramesLostDueToIntMACRcvError

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, Clause 30 counters, as specified
                in the description above.";

            }

            leaf in-total-octets {
              type yang:counter64;
              units "octets";
              description
                "The total number of octets of data (including those in
               bad frames) received on the Ethernet interface.

               Includes the 4-octet FCS.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IETF RFC 2819, etherStatsOctets";

            }

            leaf in-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of frames (including unicast, multicast and
               broadcast) that have been successfully received on the
               Ethernet interface.

               This count does not include frames received with
               frame-too-long, FCS, length or alignment errors, or
               frames lost due to internal MAC sublayer error.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.5 aFramesReceivedOK";

            }

            leaf in-multicast-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of multicast frames that have been
               successfully received on the Ethernet interface.

               This counter represents a subset of the frames counted
               by in-frames.

               This count does not include frames received with
               frame-too-long, FCS, length or alignment errors, or
               frames lost due to internal MAC sublayer error.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.21 aMulticastFramesReceivedOK";

            }

            leaf in-broadcast-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of broadcast frames that have been
               successfully received on the Ethernet interface.

               This counter represents a subset of the frames counted
               by in-frames.

               This count does not include frames received with
               frame-too-long, FCS, length or alignment errors, or
               frames lost due to internal MAC sublayer error.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.22 aBroadcastFramesReceivedOK";

            }

            leaf in-error-fcs-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of receive frames that are of valid length,
               but do not pass the FCS check, regardless of whether
               or not the frames are an integral number of octets in
               length.

               This count effectively comprises
               aFrameCheckSequenceErrors and aAlignmentErrors added
               together.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.6 aFrameCheckSequenceErrors;
                IEEE Std 802.3, 30.3.1.1.7 aAlignmentErrors";

            }

            leaf in-error-undersize-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of frames received on a particular Ethernet
               interface that are less than 64 bytes in length, and
               are discarded.

               This counter is incremented regardless of whether the
               frame passes the FCS check.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IETF RFC 2819, etherStatsUndersizePkts and 
                etherStatsFragments";

            }

            leaf in-error-oversize-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of frames received on a particular Ethernet
               interface that exceed the maximum permitted frame
               size, that is specified in max-frame-length, and are
               discarded.

               This counter is incremented regardless of whether the
               frame passes the FCS check.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.25 aFrameTooLongErrors";

            }

            leaf in-error-mac-internal-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of frames for which reception on a particular
               Ethernet interface fails due to an internal MAC
               sublayer receive error.

               A frame is only counted by an instance of this object
               if it is not counted by the corresponding instance of
               either the in-error-fcs-frames, in-error-undersize-frames,
               or in-error-oversize-frames.  The precise meaning of the
               count represented by an instance of this object is
               implementation-specific.

               In particular, an instance of this object may
               represent a count of receive errors on a particular
               Ethernet interface that are not otherwise counted.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.15
                aFramesLostDueToIntMACRcvError";

            }

            leaf out-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of frames (including unicast, multicast and
               broadcast) that have been successfully transmitted on
               the Ethernet interface.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.2 aFramesTransmittedOK";

            }

            leaf out-multicast-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of multicast frames that have been
               successfully transmitted on the Ethernet interface.

               This counter represents a subset of the frames counted
               by out-frames.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.18 aMulticastFramesXmittedOK";

            }

            leaf out-broadcast-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of broadcast frames that have been
               successfully transmitted on the Ethernet interface.

               This counter represents a subset of the frames counted
               by out-frames.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.19 aBroadcastFramesXmittedOK";

            }

            leaf out-error-mac-internal-frames {
              type yang:counter64;
              units "frames";
              description
                "A count of frames for which transmission on a
               particular Ethernet interface fails due to an internal
               MAC sublayer transmit error.

               The precise meaning of the count represented by an
               instance of this object is implementation-specific. In
               particular, an instance of this object may represent a
               count of transmission errors on a particular Ethernet
               interface that are not otherwise counted.

               Also see the 'description' statement associated with
               the parent 'statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.1.1.12
                aFramesLostDueToIntMACXmitError";

            }
          }  // container frame

          container phy {
            description
              "Ethernet statistics related to the PHY layer.

             Discontinuities in the values of counters in the
             container can occur at re-initialization of the
             management system, and at other times as indicated by
             the value of the 'discontinuity-time' leaf defined in
             the ietf-interfaces YANG module (IETF RFC 8343).";
            leaf in-error-symbol {
              type yang:counter64;
              units "errors";
              description
                "A count of the number of symbol errors that have
               occurred.

               For the precise definition of when the symbol error
               counter is incremented, please see the 'description'
               text associated with aSymbolErrorDuringCarrier,
               specified in IEEE Std 802.3, 30.3.2.1.5.

               Also see the 'description' statement associated with
               the parent 'phy-statistics' container for additional
               common semantics related to this counter.";
              reference
                "IEEE Std 802.3, 30.3.2.1.5 aSymbolErrorDuringCarrier";

            }

            container lpi {
              description
                "Physical Ethernet statistics for the energy efficiency
               related low power idle indications.";
              leaf in-lpi-transitions {
                type yang:counter64;
                units "transitions";
                description
                  "A count of occurrences of the transition from
                 DEASSERT to ASSERT of the LPI_INDICATE
                 parameter. The indication reflects the state of the
                 PHY according to the requirements of the RS (see
                 IEEE Std 802.3, 22.7, 35.4, and 46.4).

                 Also see the 'description' statement associated with
                 the parent 'phy-statistics' container for additional
                 common semantics related to this counter.";
                reference
                  "IEEE Std 802.3, 30.3.2.1.11 aReceiveLPITransitions";

              }

              leaf in-lpi-time {
                type decimal64 {
                  fraction-digits 6;
                }
                units "seconds";
                description
                  "A count reflecting the total amount of time (in
                 seconds) that the LPI_REQUEST parameter has the
                 value ASSERT.  The request is indicated to the PHY
                 according to the requirements of the RS (see IEEE Std
                 802.3, 22.7, 35.4, and 46.4).

                 Also see the 'description' statement associated with
                 the parent 'phy-statistics' container for additional
                 common semantics related to this counter.";
                reference
                  "IEEE Std 802.3, 30.3.2.1.9 aReceiveLPIMicroseconds";

              }

              leaf out-lpi-transitions {
                type yang:counter64;
                units "transitions";
                description
                  "A count of occurrences of the transition from state
                 LPI_DEASSERTED to state LPI_ASSERTED in the LPI
                 transmit state diagram of the RS. The state
                 transition corresponds to the assertion of the
                 LPI_REQUEST parameter. The request is indicated to
                 the PHY according to the requirements of the RS (see
                 IEEE Std 802.3, 22.7, 35.4, 46.4.)

                 Also see the 'description' statement associated with
                 the parent 'phy-statistics' container for additional
                 common semantics related to this counter.";
                reference
                  "IEEE Std 802.3, 30.3.2.1.10 aTransmitLPITransitions";

              }

              leaf out-lpi-time {
                type decimal64 {
                  fraction-digits 6;
                }
                units "seconds";
                description
                  "A count reflecting the total amount of time (in
                 seconds) that the LPI_INDICATION parameter has the
                 value ASSERT.  The request is indicated to the PHY
                 according to the requirements of the RS (see IEEE
                 802.3, 22.7, 35.4, and 46.4).

                 Also see the 'description' statement associated with
                 the parent 'phy-statistics' container for additional
                 common semantics related to this counter.";
                reference
                  "IEEE Std 802.3, 30.3.2.1.8 aTransmitLPIMicroseconds";

              }
            }  // container lpi
          }  // container phy

          container mac-control {
            description
              "A group of statistics specific to MAC Control operation
             of selected Ethernet interfaces.

             Discontinuities in the values of counters in the
             container can occur at re-initialization of the
             management system, and at other times as indicated by
             the value of the 'discontinuity-time' leaf defined in
             the ietf-interfaces YANG module (IETF RFC 8343).";
            reference
              "IEEE Std 802.3.1, dot3ExtensionTable";

            leaf in-frames-mac-control-unknown {
              type yang:counter64;
              units "frames";
              description
                "A count of MAC Control frames with an unsupported
               opcode received on this Ethernet interface.

               Frames counted against this counter are also counted
               against in-discards defined in the ietf-interfaces
               YANG module (IETF RFC 8343).

               Also see the 'description' statement associated with
               the parent 'mac-control-statistics' container for
               additional semantics.";
              reference
                "IEEE Std 802.3, 30.3.3.5 aUnsupportedOpcodesReceived";

            }

            leaf in-frames-mac-control-extension {
              type yang:counter64;
              units "frames";
              description
                "The count of Extension MAC Control frames received on
               this Ethernet interface.

               Also see the 'description' statement associated with
               the parent 'mac-control-statistics' container for
               additional semantics.";
              reference
                "IEEE Std 802.3, 30.3.8.2
                aEXTENSIONMACCtrlFramesReceived";

            }

            leaf out-frames-mac-control-extension {
              type yang:counter64;
              units "frames";
              description
                "The count of Extension MAC Control frames transmitted
               on this Ethernet interface.

               Also see the 'description' statement associated with
               the parent 'mac-control-statistics' container for
               additional semantics.";
              reference
                "IEEE Std 802.3, 30.3.8.1
                aEXTENSIONMACCtrlFramesTransmitted";

            }
          }  // container mac-control
        }  // container statistics
      }  // container ethernet
    }
  }  // module ieee802-ethernet-interface