module ieee802-dot1as-hs {

    yang-version 1.1;

    namespace
      "urn:ieee:std:802.1AS:yang:ieee802-dot1as-hs";

    prefix dot1as-hs;

    import ietf-yang-types {
      prefix yang;
    }
    import ieee1588-ptp-tt {
      prefix ptp-tt;
    }
    import ieee802-dot1as-gptp {
      prefix dot1as-gptp;
    }

    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
      "Management objects that control hot standby systems as
     specified in IEEE Std 802.1ASdm.

     References in this YANG module to IEEE Std 802.1AS are to
     IEEE Std 802.1AS-2020 as modified by
     IEEE Std 802.1AS-2020/Cor-1-2021, and amended by
     IEEE Std 802.1ASdr, IEEE Std 802.1ASdn, and
     IEEE Std 802.1ASdm.

     Copyright (C) IEEE (2024).
     This version of this YANG module is part of IEEE Std 802.1AS;
     see the standard itself for full legal notices.";

    revision "2024-02-26" {
      description
        "Published as part of IEEE Std 802.1ASdm-2024.
       Initial version.";
      reference
        "IEEE Std 802.1AS - YANG Data Model";

    }


    feature hot-standby {
      description
        "This feature indicates that the device supports the
       hot-standby functionality.";
    }

    typedef hot-standby-system-state-type {
      type enumeration {
        enum "init" {
          value 0;
          description
            "Initialization after the HotStandbySystem powers on and
           is enabled. In this state, the system is waiting for
           both PTP Instances to synchronize.";
        }
        enum "redundant" {
          value 1;
          description
            "Both PTP Instances are synchronized according to the
           requirements of the respective application or profile
           standard. Time synchronization is redundant.";
        }
        enum "not-redundant" {
          value 2;
          description
            "One PTP Instance is synchronized, and the other
           PTP Instance is faulted (not synchronized). Time
           synchronization continues to meet the requirements of
           the respective application or profile standard. Time
           synchronization is not redundant.";
        }
        enum "out-of-sync" {
          value 3;
          description
            "The HotStandbySystem is adjusting phase/frequency of
           its local time using the data stored while the system
           was in the REDUNDANT or NOT_REDUNDANT state, but the
           local time will eventually drift relative to other
           time-aware systems. During OUT_OF_SYNC state, time
           synchronization might not meet the requirements of the
           respective application or profile standard.";
        }
      }
      description
        "Possible states of the hot-standby system.";
    }

    typedef nrr-comp-method-type {
      type enumeration {
        enum "sync" {
          value 0;
          description
            "If the value is Sync and driftTrackingTlvSupport is
           TRUE, neighborRateRatio is populated with the value of
           nrrSync whenever a new value of nrrSync is computed.";
        }
        enum "pdelay" {
          value 1;
          description
            "If the value is Pdelay or if driftTrackingTlvSupport
           is FALSE, neighborRateRatio is populated with the value
           of nrrPdelay whenever a new value of nrrPdelay is
           computed.";
        }
      }
      description
        "typdedef for nrrCompMethod.";
    }
  }  // module ieee802-dot1as-hs