module ieee802-dot1q-cfm-alarm {

    yang-version 1.1;

    namespace
      'urn:ieee:std:802.1Q:yang:ieee802-dot1q-cfm-alarm';

    prefix dot1q-cfm-alarm;

    import ieee802-dot1q-cfm {
      prefix dot1q-cfm;
    }

    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
      "Connectivity Fault Management (CFM) comprises capabilities for
    detecting, verifying, and isolating connectivity failures in Virtual
    Bridged Local Area Networks. These capabilities can be used in
    networks operated by multiple independent organizations, each with
    restricted management access to each other's equipment.
    
    Copyright (C) IEEE (2022).
    
    This version of this YANG module is part of IEEE Std 802.1Q; see the
    standard itself for full legal notices.";

    revision "2022-01-19" {
      description
        "Published as part of IEEE Std 802.1Q-2022.";
      reference
        "IEEE Std 802.1Q-2022, Bridges and Bridged Networks.";

    }

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

    }


    augment /dot1q-cfm:cfm/dot1q-cfm:maintenance-group/dot1q-cfm:mep {
      when "dot1q-cfm:mep-id";
      description
        "Augment the MEP object defined in the ieee802-dot1q-cfm (CFM MEP)
      YANG module with CFM alarm specific attributes.";
      notification mep-fault-alarm {
        description
          "To alert the Manager to the existence of a fault in a monitored
        MA by issuing a Fault Alarm.";
        reference
          "Item c) in 12.14.7.7.2 of IEEE Std 802.1Q-2022";

        leaf mep-priority-defect {
          type leafref {
            path "../../dot1q-cfm:continuity-check/dot1q-cfm:highest-priority-defect";
          }
          config false;
          mandatory true;
          description
            "The highest priority defect that has been present since the
          MEPs Fault Notification Generator state machine was last in
          the FNG_RESET state.";
        }
      }  // notification mep-fault-alarm
    }
  }  // module ieee802-dot1q-cfm-alarm