module ieee802-dot1q-types {

    yang-version 1;

    namespace
      "urn:ieee:std:802.1Q:yang:ieee802-dot1q-types";

    prefix dot1q-types;

    import ietf-yang-types {
      prefix yang;
    }

    organization "IEEE 802.1 Working Group";

    contact
      "WG-URL: http://ieee802.org/1/
WG-EMail: stds-802-1-l@ieee.org

Contact: IEEE 802.1 Working Group Chair
Postal: C/O IEEE 802.1 Working Group
      IEEE Standards Association
      445 Hoes Lane
      Piscataway, NJ 08854
      USA

E-mail: stds-802-1-chairs@ieee.org";

    description
      "Common types used within dot1Q-bridge modules.

Copyright (C) IEEE (2021).

This version of this YANG module is part of IEEE Std 802.1Q; see the
standard itself for full legal notices.";

    revision "2021-06-01" {
      description
        "Published as part of IEEE Std 802.1Q-2021.";
      reference
        "IEEE Std 802.1Q-2021, Bridges and Bridged Networks.";

    }

    revision "2020-06-04" {
      description
        "Published as part of IEEE Std 802.1Qcx-2020. Second version.";
      reference
        "IEEE Std 802.1Qcx-2020, Bridges and Bridged Networks - YANG Data
        Model for Connectivity Fault Management.";

    }

    revision "2018-03-07" {
      description
        "Published as part of IEEE Std 802.1Q-2018. Initial version.";
      reference
        "IEEE Std 802.1Q-2018, Bridges and Bridged Networks.";

    }


    identity dot1q-vlan-type {
      description
        "Base identity from which all 802.1Q VLAN tag types are derived from.";
    }

    identity c-vlan {
      base dot1q-vlan-type;
      description
        "An 802.1Q Customer VLAN, using the 81-00 EtherType";
      reference
        "5.5 of IEEE Std 802.1Q-2021";

    }

    identity s-vlan {
      base dot1q-vlan-type;
      description
        "An 802.1Q Service VLAN, using the 88-A8 EtherType originally
introduced in 802.1ad, and incorporated into 802.1Q (2011)";
      reference
        "5.6 of IEEE Std 802.1Q-2021";

    }

    identity transmission-selection-algorithm {
      description
        "Specify the transmission selection algorithms of IEEE Std 802.1Q-2021
Table 8-6";
    }

    identity strict-priority {
      base transmission-selection-algorithm;
      description
        "Indicates the strict priority transmission selection algorithm.";
      reference
        "Table 8-6 of IEEE Std 802.1Q-2021";

    }

    identity credit-based-shaper {
      base transmission-selection-algorithm;
      description
        "Indicates the credit based shaper transmission selection algorithm.";
      reference
        "Table 8-6 of IEEE Std 802.1Q-2021";

    }

    identity enhanced-transmission-selection {
      base transmission-selection-algorithm;
      description
        "Indicates the enhanced transmission selection algorithm.";
      reference
        "Table 8-6 of IEEE Std 802.1Q-2021";

    }

    identity asynchronous-traffic-shaping {
      base transmission-selection-algorithm;
      description
        "Indicates the asynchronous transmission selection algorithm.";
      reference
        "Table 8-6 of IEEE Std 802.1Q-2021";

    }

    identity vendor-specific {
      base transmission-selection-algorithm;
      description
        "Indicates a vendor specific transmission selection algorithm.";
      reference
        "Table 8-6 of IEEE Std 802.1Q-2021";

    }

    typedef name-type {
      type string {
        length "0..32";
      }
      description
        "A text string of up to 32 characters, of locally determined
significance.";
    }

    typedef port-number-type {
      type uint32 {
        range "1..65535";
      }
      description
        "The port number of the Bridge port for which this entry contains
Bridge management information.";
    }

    typedef priority-type {
      type uint8 {
        range "0..7";
      }
      description
        "A range of priorities from 0 to 7 (inclusive). The Priority Code
Point (PCP) is a 3-bit field that refers to the class of service
associated with an 802.1Q VLAN tagged frame. The field specifies a
priority value between 0 and 7, these values can be used by quality of
service (QoS) to prioritize different classes of traffic.";
    }

    typedef vid-range-type {
      type string {
        pattern '';
      }
      description
        "A list of VLAN Ids, or non overlapping VLAN ranges, in ascending
order, between 1 and 4094.

This type is used to match an ordered list of VLAN Ids, or contiguous
ranges of VLAN Ids. Valid VLAN Ids must be in the range 1 to 4094, and
included in the list in non overlapping ascending order.

For example: 1,10-100,250,500-1000";
    }

    typedef vlanid {
      type uint16 {
        range "1..4094";
      }
      description
        "The vlanid type uniquely identifies a VLAN. This is the 12-bit
VLAN-ID used in the VLAN Tag header. The range is defined by the
referenced specification. This type is in the value set and its
semantics equivalent to the VlanId textual convention of the SMIv2.";
    }

    typedef vlan-index-type {
      type uint32 {
        range "1..4094 | 4096..4294967295";
      }
      description
        "A value used to index per-VLAN tables. Values of 0 and 4095 are not
permitted. The range of valid VLAN indices. If the value is greater
than 4095, then it represents a VLAN with scope local to the
particular agent, i.e., one without a global VLAN-ID assigned to it.
Such VLANs are outside the scope of IEEE 802.1Q, but it is convenient
to be able to manage them in the same way using this YANG module.";
      reference
        "9.6 of IEEE Std 802.1Q-2021";

    }

    typedef mstid-type {
      type uint32 {
        range "1..4094";
      }
      description
        "In an MSTP Bridge, an MSTID, i.e., a value used to identify a
spanning tree (or MST) instance";
      reference
        "13.8 of IEEE Std 802.1Q-2021";

    }

    typedef pcp-selection-type {
      type enumeration {
        enum "8P0D" {
          value 0;
          description
            "8 priorities, 0 drop eligible";
        }
        enum "7P1D" {
          value 1;
          description
            "7 priorities, 1 drop eligible";
        }
        enum "6P2D" {
          value 2;
          description
            "6 priorities, 2 drop eligible";
        }
        enum "5P3D" {
          value 3;
          description
            "5 priorities, 3 drop eligible";
        }
      }
      description
        "Priority Code Point selection types.";
      reference
        "12.6.2.5.3, 6.9.3 of IEEE Std 802.1Q-2021";

    }

    typedef protocol-frame-format-type {
      type enumeration {
        enum "Ethernet" {
          value 0;
          description
            "Ethernet frame format";
        }
        enum "rfc1042" {
          value 1;
          description
            "RFC 1042 frame format";
        }
        enum "snap8021H" {
          value 2;
          description
            "SNAP 802.1H frame format";
        }
        enum "snapOther" {
          value 3;
          description
            "Other SNAP frame format";
        }
        enum "llcOther" {
          value 4;
          description
            "Other LLC frame format";
        }
      }
      description
        "A value representing the frame format to be matched.";
      reference
        "12.10.1.7.1 of IEEE Std 802.1Q-2021";

    }

    typedef ethertype-type {
      type string {
        pattern '';
      }
      description
        "The EtherType value represented in the canonical order defined by
IEEE 802. The canonical representation uses uppercase characters.";
      reference
        "9.2 of IEEE Std 802-2014";

    }

    typedef dot1q-tag-type {
      type identityref {
        base dot1q-vlan-type;
      }
      description
        "Identifies a specific 802.1Q tag type";
      reference
        "9.5 IEEE Std 802.1Q-2021";

    }

    typedef traffic-class-type {
      type uint8 {
        range "0..7";
      }
      description
        "This is the numerical value associated with a traffic class in a
Bridge. Larger values are associated with higher priority traffic
classes.";
      reference
        "3.273 of IEEE Std 802.1Q-2021";

    }

    grouping dot1q-tag-classifier-grouping {
      description
        "A grouping which represents an 802.1Q VLAN, matching both the
EtherType and a single VLAN Id.";
      leaf tag-type {
        type dot1q-tag-type;
        mandatory true;
        description "VLAN type";
      }

      leaf vlan-id {
        type vlanid;
        mandatory true;
        description "VLAN Id";
      }
    }  // grouping dot1q-tag-classifier-grouping

    grouping dot1q-tag-or-any-classifier-grouping {
      description
        "A grouping which represents an 802.1Q VLAN, matching both the
EtherType and a single VLAN Id or 'any' to match on any VLAN Id.";
      leaf tag-type {
        type dot1q-tag-type;
        mandatory true;
        description "VLAN type";
      }

      leaf vlan-id {
        type union {
          type vlanid;
          type enumeration {
            enum "any" {
              value 4095;
              description
                "Matches 'any' VLAN in the range 1 to 4094 that is not matched
by a more specific VLAN Id match";
            }
          }
        }
        mandatory true;
        description "VLAN Id or any";
      }
    }  // grouping dot1q-tag-or-any-classifier-grouping

    grouping dot1q-tag-ranges-classifier-grouping {
      description
        "A grouping which represents an 802.1Q VLAN that matches a range of
VLAN Ids.";
      leaf tag-type {
        type dot1q-tag-type;
        mandatory true;
        description "VLAN type";
      }

      leaf vlan-ids {
        type vid-range-type;
        mandatory true;
        description "VLAN Ids";
      }
    }  // grouping dot1q-tag-ranges-classifier-grouping

    grouping dot1q-tag-ranges-or-any-classifier-grouping {
      description
        "A grouping which represents an 802.1Q VLAN, matching both the
EtherType and a single VLAN Id, ordered list of ranges, or 'any' to
match on any VLAN Id.";
      leaf tag-type {
        type dot1q-tag-type;
        mandatory true;
        description "VLAN type";
      }

      leaf vlan-id {
        type union {
          type vid-range-type;
          type enumeration {
            enum "any" {
              value 4095;
              description
                "Matches 'any' VLAN in the range 1 to 4094.";
            }
          }
        }
        mandatory true;
        description "VLAN Ids or any";
      }
    }  // grouping dot1q-tag-ranges-or-any-classifier-grouping

    grouping priority-regeneration-table-grouping {
      description
        "The priority regeneration table provides the ability to map incoming
priority values on a per-Port basis, under management control.";
      reference
        "6.9.4 of IEEE Std 802.1Q-2021";

      leaf priority0 {
        type priority-type;
        default "0";
        description "Priority 0";
        reference
          "12.6.2.3, 6.9.4 of IEEE Std 802.1Q-2021";

      }

      leaf priority1 {
        type priority-type;
        default "1";
        description "Priority 1";
        reference
          "12.6.2.3, 6.9.4 of IEEE Std 802.1Q-2021";

      }

      leaf priority2 {
        type priority-type;
        default "2";
        description "Priority 2";
        reference
          "12.6.2.3, 6.9.4 of IEEE Std 802.1Q-2021";

      }

      leaf priority3 {
        type priority-type;
        default "3";
        description "Priority 3";
        reference
          "12.6.2.3, 6.9.4 of IEEE Std 802.1Q-2021";

      }

      leaf priority4 {
        type priority-type;
        default "4";
        description "Priority 4";
        reference
          "12.6.2.3, 6.9.4 of IEEE Std 802.1Q-2021";

      }

      leaf priority5 {
        type priority-type;
        default "5";
        description "Priority 5";
        reference
          "12.6.2.3, 6.9.4 of IEEE Std 802.1Q-2021";

      }

      leaf priority6 {
        type priority-type;
        default "6";
        description "Priority 6";
        reference
          "12.6.2.3, 6.9.4 of IEEE Std 802.1Q-2021";

      }

      leaf priority7 {
        type priority-type;
        default "7";
        description "Priority 7";
        reference
          "12.6.2.3, 6.9.4 of IEEE Std 802.1Q-2021";

      }
    }  // grouping priority-regeneration-table-grouping

    grouping pcp-decoding-table-grouping {
      description
        "The Priority Code Point decoding table enables the decoding of the
priority and drop-eligible parameters from the PCP.";
      reference
        "6.9.3 of IEEE Std 802.1Q-2021";

      list pcp-decoding-map {
        key "pcp";
        description
          "This map associates the priority code point field found in the VLAN
to a priority and drop eligible value based upon the priority code
point selection type.";
        leaf pcp {
          type pcp-selection-type;
          description
            "The priority code point selection type.";
          reference
            "12.6.2.7, 6.9.3 of IEEE Std 802.1Q-2021";

        }

        list priority-map {
          key "priority-code-point";
          description
            "This map associated a priority code point value to priority and
drop eligible parameters.";
          leaf priority-code-point {
            type priority-type;
            description
              "Priority associated with the pcp.";
            reference
              "12.6.2.7, 6.9.3 of IEEE Std 802.1Q-2021";

          }

          leaf priority {
            type priority-type;
            description
              "Priority associated with the pcp.";
            reference
              "12.6.2.7, 6.9.3 of IEEE Std 802.1Q-2021";

          }

          leaf drop-eligible {
            type boolean;
            description
              "Drop eligible value for pcp";
            reference
              "12.6.2.7, 6.9.3 of IEEE Std 802.1Q-2021";

          }
        }  // list priority-map
      }  // list pcp-decoding-map
    }  // grouping pcp-decoding-table-grouping

    grouping pcp-encoding-table-grouping {
      description
        "The Priority Code Point encoding table encodes the priority and
drop-eligible parameters in the PCP field of the VLAN tag.";
      reference
        "12.6.2.9, 6.9.3 of IEEE Std 802.1Q-2021";

      list pcp-encoding-map {
        key "pcp";
        description
          "This map associated the priority and drop-eligible parameters to
the priority used to encode the PCP of the VLAN based upon the
priority code point selection type.";
        leaf pcp {
          type pcp-selection-type;
          description
            "The priority code point selection type.";
          reference
            "12.6.2.7, 6.9.3 of IEEE Std 802.1Q-2021";

        }

        list priority-map {
          key "priority dei";
          description
            "This map associated the priority and drop-eligible parameters to
the priority code point field of the VLAN tag.";
          leaf priority {
            type priority-type;
            description
              "Priority associated with the pcp.";
            reference
              "12.6.2.7, 6.9.3 of IEEE Std 802.1Q-2021";

          }

          leaf dei {
            type boolean;
            description
              "The drop eligible value.";
            reference
              "12.6.2, 8.6.6 of IEEE Std 802.1Q-2021";

          }

          leaf priority-code-point {
            type priority-type;
            description
              "PCP value for priority when DEI value";
            reference
              "12.6.2.9, 6.9.3 of IEEE Std 802.1Q-2021";

          }
        }  // list priority-map
      }  // list pcp-encoding-map
    }  // grouping pcp-encoding-table-grouping

    grouping service-access-priority-table-grouping {
      description
        "The Service Access Priority Table associates a received priority with
a serice access priority.";
      reference
        "12.6.2.17, 6.13.1 of IEEE Std 802.1Q-2021";

      leaf priority0 {
        type priority-type;
        default "0";
        description
          "Service access priority value for priority 0";
        reference
          "12.6.2.17, 6.13.1 of IEEE Std 802.1Q-2021";

      }

      leaf priority1 {
        type priority-type;
        default "1";
        description
          "Service access priority value for priority 1";
        reference
          "12.6.2.17, 6.13.1 of IEEE Std 802.1Q-2021";

      }

      leaf priority2 {
        type priority-type;
        default "2";
        description
          "Service access priority value for priority 2";
        reference
          "12.6.2.17, 6.13.1 of IEEE Std 802.1Q-2021";

      }

      leaf priority3 {
        type priority-type;
        default "3";
        description
          "Service access priority value for priority 3";
        reference
          "12.6.2.17, 6.13.1 of IEEE Std 802.1Q-2021";

      }

      leaf priority4 {
        type priority-type;
        default "4";
        description
          "Service access priority value for priority 4";
        reference
          "12.6.2.17, 6.13.1 of IEEE Std 802.1Q-2021";

      }

      leaf priority5 {
        type priority-type;
        default "5";
        description
          "Service access priority value for priority 5";
        reference
          "12.6.2.17, 6.13.1 of IEEE Std 802.1Q-2021";

      }

      leaf priority6 {
        type priority-type;
        default "6";
        description
          "Service access priority value for priority 6";
        reference
          "12.6.2.17, 6.13.1 of IEEE Std 802.1Q-2021";

      }

      leaf priority7 {
        type priority-type;
        default "7";
        description
          "Service access priority value for priority 7";
        reference
          "12.6.2.17, 6.13.1 of IEEE Std 802.1Q-2021";

      }
    }  // grouping service-access-priority-table-grouping

    grouping traffic-class-table-grouping {
      description
        "The Traffic Class Table models the operations that can be performed
on, or inquire about, the current contents of the Traffic Class Table
(8.6.6) for a given Port.";
      reference
        "12.6.3, 8.6.6 of IEEE Std 802.1Q-2021";

      list traffic-class-map {
        key "priority";
        description
          "The priority index into the traffic class table.";
        leaf priority {
          type priority-type;
          description
            "The priority of the traffic class entry.";
          reference
            "8.6.6 of IEEE Std 802.1Q-2021";

        }

        list available-traffic-class {
          key "num-traffic-class";
          description
            "The traffic class index associated with a given priority within
the traffic class table.";
          reference
            "8.6.6 of IEEE Std 802.1Q-2021";

          leaf num-traffic-class {
            type uint8 {
              range "1..8";
            }
            description
              "The available number of traffic classes.";
            reference
              "8.6.6 of IEEE Std 802.1Q-2021";

          }

          leaf traffic-class {
            type traffic-class-type;
            description
              "The traffic class index associated with a given traffic class
entry.";
            reference
              "8.6.6 of IEEE Std 802.1Q-2021";

          }
        }  // list available-traffic-class
      }  // list traffic-class-map
    }  // grouping traffic-class-table-grouping

    grouping transmission-selection-table-grouping {
      description
        "The Transmission Selection Algorithm Table models the operations that
can be performed on, or inquire about, the current contents of the
Transmission Selection Algorithm Table (12.20.2) for a given Port.";
      reference
        "12.20.2, 8.6.8 of IEEE Std 802.1Q-2021";

      list transmission-selection-algorithm-map {
        key "traffic-class";
        description
          "The traffic class to index into the transmission selection table.";
        leaf traffic-class {
          type traffic-class-type;
          description
            "The traffic class of the entry.";
          reference
            "8.6.6 of IEEE Std 802.1Q-2021";

        }

        leaf transmission-selection-algorithm {
          type identityref {
            base dot1q-types:transmission-selection-algorithm;
          }
          description
            "Transmission selection algorithm";
          reference
            "8.6.8, Table 8-6 of IEEE Std 802.1Q-2021";

        }
      }  // list transmission-selection-algorithm-map
    }  // grouping transmission-selection-table-grouping

    grouping port-map-grouping {
      description
        "A set of control indicators, one for each Port. A Port Map,
containing a control element for each outbound Port";
      reference
        "8.8.1, 8.8.2 of IEEE Std 802.1Q-2021";

      list port-map {
        key "port-ref";
        description
          "The list of entries composing the port map.";
        leaf port-ref {
          type port-number-type;
          description
            "The interface port reference associated with this map.";
          reference
            "8.8.1 of IEEE Std 802.1Q-2021";

        }

        choice map-type {
          description "Type of port map";
          container static-filtering-entries {
            description
              "Static filtering entries attributes.";
            leaf control-element {
              type enumeration {
                enum "forward" {
                  value 0;
                  description
                    "Forwarded, independently of any dynamic filtering
information held by the FDB.";
                }
                enum "filter" {
                  value 1;
                  description
                    "Filtered, independently of any dynamic filtering
information.";
                }
                enum "forward-filter" {
                  value 2;
                  description
                    "Forwarded or filtered on the basis of dynamic filtering
information, or on the basis of the default Group
filtering behavior for the outbound Port (8.8.6) if no
dynamic filtering information is present specifically for
the MAC address.";
                }
              }
              description
                "containing a control element for each outbound Port,
specifying that a frame with a destination MAC address, and in
the case of VLAN Bridge components, VID that meets this
specification.";
              reference
                "8.8.1 of IEEE Std 802.1Q-2021";

            }

            leaf connection-identifier {
              type port-number-type;
              description
                "A Port MAP may contain a connection identifier (8.8.12) for
each outbound port. The connection identifier may be
associated with the Bridge Port value maintained in a Dynamic
Filtering Entry of the FDB for Bridge Ports.";
              reference
                "8.8.1, 8.8.12 of IEEE Std 802.1Q-2021";

            }
          }  // container static-filtering-entries
          container static-vlan-registration-entries {
            description
              "Static VLAN registration entries.";
            leaf registrar-admin-control {
              type enumeration {
                enum "fixed-new-ignored" {
                  value 0;
                  description
                    "Registration Fixed (New ignored).";
                }
                enum "fixed-new-propagated" {
                  value 1;
                  description
                    "Registration Fixed (New propagated.";
                }
                enum "forbidden" {
                  value 2;
                  description
                    "Registration Forbidden.";
                }
                enum "normal" {
                  value 3;
                  description
                    "Normal Registration.";
                }
              }
              description
                "The Registrar Administrative Control values for MVRP and MIRP
for the VID.";
              reference
                "8.8.2 of IEEE Std 802.1Q-2021";

            }

            leaf vlan-transmitted {
              type enumeration {
                enum "tagged" {
                  value 0;
                  description "VLAN-tagged";
                }
                enum "untagged" {
                  value 1;
                  description
                    "VLAN-untagged";
                }
              }
              description
                "Whether frames are to be VLAN-tagged or untagged when
transmitted.";
              reference
                "8.8.2 of IEEE Std 802.1Q-2021";

            }
          }  // container static-vlan-registration-entries
          container mac-address-registration-entries {
            description
              "MAC address registration entries attributes.";
            leaf control-element {
              type enumeration {
                enum "registered" {
                  value 0;
                  description
                    "Forwarded, independently of any dynamic filtering
information held by the FDB.";
                }
                enum "not-registered" {
                  value 1;
                  description
                    "Filtered, independently of any dynamic filtering
information.";
                }
              }
              description
                "containing a control element for each outbound Port,
specifying that a frame with a destination MAC address, and in
the case of VLAN Bridge components, VID that meets this
specification.";
              reference
                "8.8.4 of IEEE Std 802.1Q-2021";

            }
          }  // container mac-address-registration-entries
          container dynamic-vlan-registration-entries {
            description
              "Dynamic VLAN registration entries attributes.";
            leaf control-element {
              type enumeration {
                enum "registered" {
                  value 0;
                  description
                    "Forwarded, independently of any dynamic filtering
information held by the FDB.";
                }
              }
              description
                "containing a control element for each outbound Port,
specifying that a frame with a destination MAC address, and in
the case of VLAN Bridge components, VID that meets this
specification.";
              reference
                "8.8.5 of IEEE Std 802.1Q-2021";

            }
          }  // container dynamic-vlan-registration-entries
          container dynamic-reservation-entries {
            description
              "Dynamic reservation entries attributes.";
            leaf control-element {
              type enumeration {
                enum "forward" {
                  value 0;
                  description
                    "Forwarded, independently of any dynamic filtering
information held by the FDB.";
                }
                enum "filter" {
                  value 1;
                  description
                    "Filtered, independently of any dynamic filtering
information.";
                }
              }
              description
                "Containing a control element for each outbound Port,
specifying that a frame with a destination MAC address, and in
the case of VLAN Bridge components, VID that meets this
specification.";
              reference
                "8.8.7 of IEEE Std 802.1Q-2021";

            }
          }  // container dynamic-reservation-entries
          container dynamic-filtering-entries {
            description
              "Dynamic filtering entries attributes.";
            leaf control-element {
              type enumeration {
                enum "forward" {
                  value 0;
                  description
                    "Forwarded, independently of any dynamic filtering
information held by the FDB.";
                }
              }
              description
                "Containing a control element for each outbound Port,
specifying that a frame with a destination MAC address, and in
the case of VLAN Bridge components, VID that meets this
specification.";
              reference
                "8.8.3 of IEEE Std 802.1Q-2021";

            }
          }  // container dynamic-filtering-entries
        }  // choice map-type
      }  // list port-map
    }  // grouping port-map-grouping

    grouping bridge-port-statistics-grouping {
      description
        "Grouping of bridge port statistics.";
      reference
        "12.6.1.1.3 of IEEE Std 802.1Q-2021";

      leaf delay-exceeded-discards {
        type yang:counter64;
        description
          "The number of frames discarded by this port due to excessive
transit delay through the Bridge. It is incremented by both
transparent and source route Bridges.";
        reference
          "12.6.1.1.3, 8.6.6 of IEEE Std 802.1Q-2021";

      }

      leaf mtu-exceeded-discards {
        type yang:counter64;
        description
          "The number of frames discarded by this port due to an excessive
size. It is incremented by both transparent and source route
Bridges.";
        reference
          "12.6.1.1.3, item g) of IEEE Std 802.1Q-2021";

      }

      leaf frame-rx {
        type yang:counter64;
        description
          "The number of frames that have been received by this port from its
segment. Note that a frame received on the interface corresponding
to this port is only counted by this object if and only if it is for
a protocol being processed by the local bridging function, including
Bridge management frames.";
        reference
          "12.6.1.1.3 of IEEE Std 802.1Q-2021";

      }

      leaf octets-rx {
        type yang:counter64;
        description
          "The total number of octets in all valid frames received (including
BPDUs, frames addressed to the Bridge as an end station, and frames
that were submitted to the Forwarding Process).";
        reference
          "12.6.1.1.3 of IEEE Std 802.1Q-2021";

      }

      leaf frame-tx {
        type yang:counter64;
        description
          "The number of frames that have been transmitted by this port to its
segment. Note that a frame transmitted on the interface
corresponding to this port is only counted by this object if and
only if it is for a protocol being processed by the local bridging
function, including Bridge management frames.";
      }

      leaf octets-tx {
        type yang:counter64;
        description
          "The total number of octets that have been transmitted by this port
to its segment.";
      }

      leaf discard-inbound {
        type yang:counter64;
        description
          "Count of received valid frames that were discarded (i.e., filtered)
by the Forwarding Process.";
        reference
          "12.6.1.1.3 of IEEE Std 802.1Q-2021";

      }

      leaf forward-outbound {
        type yang:counter64;
        description
          "The number of frames forwarded to the associated MAC Entity (8.5).";
        reference
          "12.6.1.1.3 of IEEE Std 802.1Q-2021";

      }

      leaf discard-lack-of-buffers {
        type yang:counter64;
        description
          "The count of frames that were to be transmitted through the
associated Port but were discarded due to lack of buffers.";
        reference
          "12.6.1.1.3 of IEEE Std 802.1Q-2021";

      }

      leaf discard-transit-delay-exceeded {
        type yang:counter64;
        description
          "The number of frames discarded by this port due to excessive
transit delay through the Bridge. It is incremented by both
transparent and source route Bridges.";
        reference
          "12.6.1.1.3 of IEEE Std 802.1Q-2021";

      }

      leaf discard-on-error {
        type yang:counter64;
        description
          "The number of frames that were to be forwarded on the associated
MAC but could not be transmitted (e.g., frame would be too large,
6.5.8).";
        reference
          "12.6.1.1.3 of IEEE Std 802.1Q-2021";

      }
    }  // grouping bridge-port-statistics-grouping
  }  // module ieee802-dot1q-types