module bbf-xpon-performance-management {

    yang-version 1.1;

    namespace
      "urn:bbf:yang:bbf-xpon-performance-management";

    prefix bbf-xpon-pm;

    import bbf-yang-types {
      prefix bbf-yang;
    }
    import ietf-interfaces {
      prefix if;
    }
    import bbf-xpon-if-type {
      prefix bbf-xponift;
    }
    import bbf-interfaces-performance-management {
      prefix bbf-if-pm;
    }

    organization
      "Broadband Forum <https://www.broadband-forum.org>
     Fiber Access Networks Work Area";

    contact
      "Comments or questions about this Broadband Forum YANG module
     should be directed to <mailto:info@broadband-forum.org>.

     Editor:      Robert Peschi, Nokia

     PS Leader:   Joey Boyd, Adtran

     WA Director: Marta Seda, Calix";

    description
      "This module contains a collection of YANG definitions for
     supporting the Broadband Forum requirements on management of
     ITU-T Passive Optical Network (PON) interfaces as defined in
     ITU-T G.984.x, G.987.x, ITU-T G.989.x and ITU-T G.9807.x. As
     such, this module is specific to access network equipment (e.g.,
     BBF-specified Access Nodes and FTTdp DPUs).

     Specifically, this module augments
     bbf-interfaces-performance-management to manage performance
     monitoring of xPON interfaces.

     Copyright (c) 2018-2024, Broadband Forum

     Redistribution and use in source and binary forms, with or
     without modification, are permitted provided that the following
     conditions are met:

     1. Redistributions of source code must retain the above copyright
        notice, this list of conditions and the following disclaimer.

     2. Redistributions in binary form must reproduce the above
        copyright notice, this list of conditions and the following
        disclaimer in the documentation and/or other materials
        provided with the distribution.

     3. Neither the name of the copyright holder nor the names of its
        contributors may be used to endorse or promote products
        derived from this software without specific prior written
        permission.

     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
     CONTRIBUTORS \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES,
     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

     The above license is used as a license under copyright only.
     Please reference the Forum IPR Policy for patent licensing terms
     <https://www.broadband-forum.org/ipr-policy>.

     Any moral rights which are necessary to exercise under the above
     license grant are also deemed granted under this license.

     This version of this YANG module is part of TR-385i3; see
     the TR itself for full legal notices.";

    revision "2024-04-23" {
      description
        "Issue 3.
       * Approval Date:    2024-04-23.
       * Publication Date: 2024-04-23.";
      reference
        "TR-385i3: YANG Modules for PON Management
        	<https://www.broadband-forum.org/technical/download/
        		 TR-385_Issue-3.pdf>";

    }

    revision "2023-06-21" {
      description
        "Issue 2 Amendment 1.
       * Approval Date:    2023-06-21.
       * Publication Date: 2023-06-21.";
      reference
        "TR-385i2a1 - ITU-T PON YANG Modules
        	<https://www.broadband-forum.org/technical/download/
        		 TR-385_Issue-2_Amendment-1.pdf>";

    }

    revision "2020-10-13" {
      description
        "Issue 2.
       * Approval Date:    2020-10-13.
       * Publication Date: 2020-10-13.";
      reference
        "TR-385i2: ITU-T PON YANG Modules
        	<https://www.broadband-forum.org/technical/download/
        		 TR-385_Issue-2.pdf>";

    }


    grouping xpon-phy-pm {
      description
        "xPON PHY performance counters.";
      container phy {
        description
          "xPON PHY performance counters.";
        leaf corrected-fec-bytes {
          type bbf-yang:performance-counter64;
          description
            "The number of bytes that were corrected by the Forward
           Error Correction (FEC) function.

           For G-PON, reported per vANI.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - Corrected FEC bytes;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Corrected FEC bytes;
            ITU-T G.989.3 Amd.2 Table 14-1 - Corrected FEC bytes;
            ITU-T G.9804.2 Table 14-1 - Corrected FEC bits";

        }

        leaf corrected-fec-codewords {
          type bbf-yang:performance-counter64;
          description
            "Count of Forward Error Correction (FEC) codewords that
           contained errors but were corrected by the FEC function.

           For G-PON, reported per vANI.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - Corrected FEC codewords;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Corrected FEC
            codewords;
            ITU-T G.989.3 Amd.2 Table 14-1 - Corrected FEC codewords;
            ITU-T G.9804.2 Table 14-1 - Corrected FEC codewords";

        }

        leaf uncorrectable-fec-codewords {
          type bbf-yang:performance-counter64;
          description
            "Count of Forward Error Correction (FEC) codewords that
           contained errors and could not be corrected by the FEC
           function.

           For G-PON, reported per vANI and CT.
           For XG-PON, reported per ANI, vANI and CT.
           For XGS-PON, reported per ANI, vANI and CT.
           For 25GS-PON, reported per ANI, vANI and CT.
           For NG-PON2, reported per ANI, vANI and CT.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.987.3 Table 14-1 - Uncorrectable FEC codewords;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Uncorrectable FEC
            codewords;
            ITU-T G.989.3 Amd.2 Table 14-1 - Uncorrectable FEC
            codewords;
            ITU-T G.9804.2 Table 14-1 - Uncorrectable FEC codewords";

        }

        leaf in-fec-codewords {
          type bbf-yang:performance-counter64;
          description
            "Count of total received Forward Error Correction (FEC)
           codewords.

           For G-PON, reported per vANI and CT.
           For XG-PON, reported per ANI, vANI and CT.
           For XGS-PON, reported per ANI, vANI and CT.
           For 25GS-PON, reported per ANI, vANI and CT.
           For NG-PON2, reported per ANI, vANI and CT.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.987.3 Table 14-1 - Total FEC codewords;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Total FEC codewords;
            ITU-T G.989.3 Amd.2 Table 14-1 - Total FEC codewords;
            ITU-T G.9804.2 Table 14-1 - Total FEC codewords";

        }

        leaf fec-seconds {
          type bbf-yang:performance-counter32;
          description
            "The seconds during which there was a Forward Error
           Correction (FEC) anomaly.

           For G-PON, reported per ANI.
           For XG-PON, reported per ANI.
           For XGS-PON, reported per ANI.
           For 25GS-PON, reported per ANI.
           For NG-PON2, reported per ANI.
           For 50G-PON, reported per ANI.";
          reference
            "ITU-T G.988 Clause 9.2.9 - FEC Seconds";

        }

        leaf in-bip-protected-words {
          type bbf-yang:performance-counter64;
          description
            "Count of received 4-byte words that are included in the
           Bit-Interleaved even Parity (BIP-32) check.

           For G-PON, reported per ANI (via PLOAM), vANI and CT.
           For XG-PON, reported per vANI and CT.
           For XGS-PON, reported per vANI and CT.
           For 25GS-PON, reported per vANI and CT.
           For NG-PON2, reported per ANI (via OMCI), vANI and CT.
           For 50G-PON, reported per vANI and CT.";
          reference
            "ITU-T G.984.3 Clause 8.1.3.4;
            ITU-T G.984.3 Clause 8.2.2.1;
            ITU-T G.987.3 Table 14-1 - Total received words protected
            by BIP-32;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Total received words
            protected by BIP-32;
            ITU-T G.989.3 Amd.2 Table 14-1 - Total received words
            protected by BIP-32;
            ITU-T G.9804.2 Table 14-1 - Total received words protected
            by BIP-32.";

        }

        leaf in-bip-errors {
          type bbf-yang:performance-counter64;
          description
            "Count of the bit errors according to Bit-Interleaved
           even Parity (BIP-32).

           For G-PON, reported per ANI (via PLOAM), vANI and CT.
           For XG-PON, reported per vANI and CT.
           For XGS-PON, reported per vANI and CT.
           For 25GS-PON, reported per vANI and CT.
           For NG-PON2, reported per ANI (via OMCI), vANI and CT.
           For 50G-PON, reported per vANI and CT.";
          reference
            "ITU-T G.984.3 Clause 8.1.3.4;
            ITU-T G.984.3 Clause 8.2.2.1;
            ITU-T G.984.3 Clause 9.2.2;
            ITU-T G.984.3 Clause 11.2.1 - BIP-8 errors of ONUi at OLT
            side;
            ITU-T G.984.3 Clause 11.2.2 - BIP-8 errors at ONU side;
            ITU-T G.987.3 Table 14-1 - BIP-32 error count;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - BIP-32 error count;
            ITU-T G.989.3 Amd.2 Table 14-1 - BIP-32 error count;
            ITU-T G.9804.2 Table 14-1 - BIP-32 error count";

        }

        leaf psbd-hec-errors {
          type bbf-yang:performance-counter64;
          description
            "Hybrid Error Correction (HEC) error in any of the fields of
           the Downstream Physical Synchronization Block (PSBd).

           For G-PON, not applicable.
           For XG-PON, reported per ANI.
           For XGS-PON, reported per ANI.
           For 25GS-PON, reported per ANI.
           For NG-PON2, reported per ANI.
           For 50G-PON, reported per ANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - PSBd HEC error count;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - PSBd HEC error count;
            ITU-T G.989.3 Amd.2 Table 14-1 - PSBd HEC error count;
            ITU-T G.9804.2 Table 14-1 - PSBd HEC error count";

        }

        leaf fs-hec-errors {
          type bbf-yang:performance-counter64;
          description
            "For XG-PON, the XG-PON Transmission Convergence (XGTC)
           header Hybrid Error Correction (HEC) errors received.
           For XGS-PON and NG-PON2, the Downstream (DS) Framing
           Sublayer (FS) header Hybrid Error Correction (HEC) errors
           received.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - XGTC HEC error count;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - FS HEC error count;
            ITU-T G.989.3 Amd.2 Table 14-1 - FS HEC error count;
            ITU-T G.9804.2 Table 14-1 - FS HEC error count";

        }

        leaf unknown-profiles {
          type bbf-yang:performance-counter64;
          description
            "Count of the instances where the Optical Network Unit (ONU)
           could not transmit because the specified burst profile was
           unknown.

           For G-PON, not applicable.
           For XG-PON, reported per ANI.
           For XGS-PON, reported per ANI.
           For 25GS-PON, reported per ANI.
           For NG-PON2, reported per ANI.
           For 50G-PON, reported per ANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - Unknown profile;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Unknown profile count;
            ITU-T G.989.3 Amd.2 Table 14-1 - Unknown profile count;
            ITU-T G.9804.2 Table 14-1 - Unknown profile count";

        }
      }  // container phy
    }  // grouping xpon-phy-pm

    grouping xpon-lods-pm {
      description
        "xPON LODS performance counters.";
      container lods {
        description
          "xPON Loss of Downstream Synchronization (LODS) performance
         counters.";
        leaf total-events {
          type bbf-yang:performance-counter64;
          description
            "Counter of state transitions from O5.1/O5.2 to O6.

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, reported per ANI.
           For 25GS-PON, reported per ANI.
           For NG-PON2, reported per ANI.
           For 50G-PON, reported per ANI.";
          reference
            "ITU-T G.9807.1 Amd.1 Table C.14.1 - Total number of LODS
            events;
            ITU-T G.989.3 Amd.2 Table 14-1 - Total number of LODS
            events;
            ITU-T G.9804.2 Table 14-1 - Total number of LODS events";

        }

        container restored {
          description
            "Counters associated with Loss of Downstream Synchronization
           (LODS) events restored relative to a Time and Division
           Wavelength Multiplexing (TWDM) channel.";
          leaf operating-twdm {
            type bbf-yang:performance-counter64;
            description
              "Loss of Downstream Synchronization (LODS) cleared
             without returning.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, reported per ANI.
             For 25GS-PON, reported per ANI.
             For NG-PON2, reported per ANI.
             For 50G-PON, reported per ANI.";
            reference
              "ITU-T G.9807.1 Amd.1 Table C.14.1 - LODS events restored;
              ITU-T G.989.3 Amd.2 Table 14-1 - LODS events restored in
              the operating TWDM channel;
              ITU-T G.9804.2 Table 14-1 - LODS events restored in the
              operating TWDM channel";

          }

          leaf precfg-protect-twdm {
            type bbf-yang:performance-counter64;
            description
              "Wavelength Channel Protection (WLCP) on.
             Optical Network Unit (ONU) retunes to the pre-configured
             channel.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI.
             For 50G-PON, reported per ANI.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - LODS events restored in
              the pre-configured protection TWDM channel;
              ITU-T G.9804.2 Table 14-1 - LODS events restored in the
              pre-configured protection TWDM channel";

          }

          leaf discretionary-twdm {
            type bbf-yang:performance-counter64;
            description
              "Wavelength Channel Protection (WLCP) off.
             Optical Network Unit (ONU) retunes to the channel of its
             choice.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI.
             For 50G-PON, reported per ANI.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - LODS events restored in
              a discretionary TWDM channel;
              ITU-T G.9804.2 Table 14-1 - LODS events restored in a
              discretionary TWDM channel";

          }
        }  // container restored

        container onu-reactivation {
          description
            "Counters associated with Loss of Downstream Synchronization
           (LODS) events resulting in Optical Network Unit (ONU)
           reactivation.";
          leaf no-sync-reacquired {
            type bbf-yang:performance-counter64;
            description
              "Either TO2 (without Wavelength Channel Protection (WLCP))
             or TO3+TO4 (with WLCP) expire before the downstream
             channel is reacquired.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, reported per ANI.
             For 25GS-PON, reported per ANI.
             For NG-PON2, reported per ANI.
             For 50G-PON, reported per ANI.";
            reference
              "ITU-T G.9807.1 Amd.1 Table C.14.1 - LODS events resulting
              in ONU reactivation without synchronization being
              reacquired;
              ITU-T G.989.3 Amd.2 Table 14-1 - LODS events resulting in
              ONU reactivation without synchronization being
              reacquired;
              ITU-T G.9804.2 Table 14-1 - LODS events resulting in ONU
              reactivation without synchronization being reacquired";

          }

          leaf after-us-hs-fail-precfg-twdm {
            type bbf-yang:performance-counter64;
            description
              "Timer TO5 expiration in pre-configured Time Wavelength
             Division Multiplexing (TWDM) channel.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI.
             For 50G-PON, reported per ANI.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - LODS events resulting in
              ONU reactivation after upstream handshake failure in
              pre-configured TWDM channel;
              ITU-T G.9804.2 Table 14-1 - LODS events resulting in ONU
              reactivation after upstream handshake failure in
              pre-configured TWDM channel";

          }

          leaf after-us-hs-fail-discretionary-twdm {
            type bbf-yang:performance-counter64;
            description
              "Timer TO5 expiration in discretionary Time Wavelength
             Division Multiplexing (TWDM) channel to which Optical
             Network Unit (ONU) retunes as a channel of its choice.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI.
             For 50G-PON, reported per ANI.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - LODS events resulting in
              ONU reactivation after upstream handshake failure in
              discretionary TWDM channel;
              ITU-T G.9804.2 Table 14-1 - LODS events resulting in ONU
              reactivation after upstream handshake failure in
              discretionary TWDM channel";

          }
        }  // container onu-reactivation
      }  // container lods
    }  // grouping xpon-lods-pm

    grouping xpon-gemport-pm {
      description
        "xPON G-PON Encapsulation Method (GEM) port performance
       counters.";
      container gemport {
        description
          "xPON G-PON Encapsulation Method (GEM) port performance
         counters.";
        leaf out-frames {
          type bbf-yang:performance-counter64;
          description
            "Total number of G-PON Encapsulation Method (GEM) frames
           transmitted.

           For G-PON, reported per ANI (via OMCI). While not
           explicitly defined in G.984.3, implementations may report
           this count per CT.
           For XG-PON, reported per ANI and CT.
           For XGS-PON, reported per ANI and CT.
           For 25GS-PON, reported per ANI and CT.
           For NG-PON2, reported per ANI and CT.
           For 50G-PON, reported per ANI and CT.";
          reference
            "ITU-T G.987.3 Table 14-1 - Transmitted XGEM frames;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Transmitted XGEM
            frames;
            ITU-T G.989.3 Amd.2 Table 14-1 - Transmitted XGEM frames;
            ITU-T G.9804.2 Table 14-1 - Transmitted XGEM frames";

        }

        leaf in-frames {
          type bbf-yang:performance-counter64;
          description
            "Total number of G-PON Encapsulation Method (GEM) frames
           received.

           For G-PON, reported per ANI (via OMCI). While not
           explicitly defined in G.984.3, implementations may report
           this count per CT.
           For XG-PON, reported per ANI and CT.
           For XGS-PON, reported per ANI and CT.
           For 25GS-PON, reported per ANI and CT.
           For NG-PON2, reported per ANI and CT.
           For 50G-PON, reported per ANI and CT.";
          reference
            "ITU-T G.987.3 Table 14-1 - Received XGEM frames;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Received XGEM frames;
            ITU-T G.989.3 Amd.2 Table 14-1 - Received XGEM frames;
            ITU-T G.9804.2 Table 14-1 - Received XGEM frames";

        }

        leaf out-frames-lf-bit-not-set {
          type bbf-yang:performance-counter64;
          description
            "Number of transmit fragmentation operations.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and CT.
           For XGS-PON, reported per ANI and CT.
           For 25GS-PON, reported per ANI and CT.
           For NG-PON2, reported per ANI and CT.
           For 50G-PON, reported per ANI and CT.";
          reference
            "ITU-T G.987.3 Table 14-1 - Count of the number of
            transmitted XGEM frames with LF bit NOT set;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Count of the number of
            transmitted XGEM frames with LF bit NOT set;
            ITU-T G.989.3 Amd.2 Table 14-1 - Count of the number of
            transmitted XGEM frames with LF bit NOT set;
            ITU-T G.9804.2 Table 14-1 - Count of the number of
            transmitted XGEM frames with LF bit NOT set";

        }

        leaf hec-errors {
          type bbf-yang:performance-counter64;
          description
            "Number of events involving loss of G-PON Encapsulation
           Method (GEM) channel delineation.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - XGEM frame header HEC errors;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Count of XGEM frame
            header HEC errors;
            ITU-T G.989.3 Amd.2 Table 14-1 - Count of XGEM frame header
            HEC errors;
            ITU-T G.9804.2 Table 14-1 - Count of XGEM frame header HEC
            errors";

        }

        leaf fs-frame-words-lost {
          type bbf-yang:performance-counter64;
          description
            "Aggregate severity measure of the loss of G-PON
           Encapsulation Method (GEM) channel delineation events. Note
           that the number of lost GEM frames is not available.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - Count of XGTC frame words lost
            due to GEM frame HEC error;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Count of FS frame words
            lost due to XGEM frame HEC error;
            ITU-T G.989.3 Amd.2 Table 14-1 - Count of FS frame words
            lost due to XGEM frame HEC error;
            ITU-T G.9804.2 Table 14-1 - Count of FS frame words lost
            due to XGEM frame HEC error";

        }

        leaf key-errors {
          type bbf-yang:performance-counter64;
          description
            "G-PON Encapsulation Method (GEM) frames discarded because
           of unknown or invalid encryption key. Examples include: no
           unicast or broadcast key established for specified key
           index, key index indicating encrypted GEM frame on an GEM
           port that is not provisioned for encryption, key index
           indicating upstream encryption on an GEM port that is
           provisioned for downstream encryption only, or invalid key
           index. This count is included in the 'in-frames' count.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - XGEM key errors;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - XGEM key error count;
            ITU-T G.989.3 Amd.2 Table 14-1 - XGEM key error count;
            ITU-T G.9804.2 Table 14-1 - XGEM key error count";

        }
      }  // container gemport
    }  // grouping xpon-gemport-pm

    grouping xpon-utilization-pm {
      description
        "xPON utilization performance counters.";
      container utilization {
        description
          "xPON utilization performance counters.";
        leaf out-bytes-non-idle-xgem-frames {
          type bbf-yang:performance-counter64;
          description
            "Measure of downstream utilization.

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, reported per ANI, vANI and CT.
           For 25GS-PON, reported per ANI, vANI and CT.
           For NG-PON2, reported per ANI, vANI and CT.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Transmitted bytes in
            non-idle XGEM frames;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Transmitted bytes in
            non-idle XGEM frames;
            ITU-T G.9804.2 Table 14-1 - Transmitted bytes in non-idle
            XGEM frames";

        }

        leaf in-bytes-non-idle-xgem-frames {
          type bbf-yang:performance-counter64;
          description
            "Measure of upstream utilization.

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, reported per ANI, vANI and CT.
           For 25GS-PON, reported per ANI, vANI and CT.
           For NG-PON2, reported per ANI, vANI and CT.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Received bytes in non-idle
            XGEM frames;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Received bytes in
            non-idle XGEM frames;
            ITU-T G.9804.2 Table 14-1 - Received bytes in non-idle XGEM
            frames";

        }

        leaf bw-not-assigned {
          type bbf-yang:performance-counter64;
          description
            "Count of Dynamic Bandwidth Assignment (DBA) inability to
           assign guaranteed bandwidth in the presence of demand.
           Indication of upstream congestion.

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, reported per vANI and CT.
           For 25GS-PON, reported per vANI and CT.
           For NG-PON2, reported per vANI and CT.
           For 50G-PON, reported per vANI and CT.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Count of DBA inability to
            assign guaranteed bandwidth in the presence of demand;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Count of DBA inability
            to assign guaranteed bandwidth in the presence of demand;
            ITU-T G.9804.2 Table 14-1 - Count of DBA inability to
            assign guaranteed bandwidth in the presence of demand";

        }
      }  // container utilization
    }  // grouping xpon-utilization-pm

    grouping xpon-ploam-pm {
      description
        "xPON Physical Layer Operation, Administration and Maintenance
       (PLOAM) performance counters.";
      container ploam {
        description
          "xPON Physical Layer Operation, Administration and Maintenance
         (PLOAM) performance counters.";
        leaf sn-grants {
          type bbf-yang:performance-counter64;
          description
            "Serial number grants for Optical Network Unit (ONU)
           discovery.

           For G-PON, not applicable.
           For XG-PON, reported per CT.
           For XGS-PON, reported per CT.
           For 25GS-PON, reported per CT.
           For NG-PON2, reported per CT.
           For 50G-PON, reported per CT.";
          reference
            "ITU-T G.987.3 Table 14-1 - SN grant count;
            ITU-T G.989.3 Amd.2 Table 14-1 - SN grant count;
            ITU-T G.9807.1 Amd.1 Table C.14.1 SN grant count;
            ITU-T G.9804.2 Table 14-1 - SN grant count";

        }

        leaf mic-errors {
          type bbf-yang:performance-counter64;
          description
            "Counter of received Physical Layer Operations,
           Administrations and Maintenance (PLOAM) messages with
           Message Integrity Check (MIC) errors.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - PLOAM MIC errors;
            ITU-T G.989.3 Amd.2 Table 14-1 - PLOAM MIC errors;
            ITU-T G.9807.1 Amd.1 Table C.14.1 PLOAM MIC errors;
            ITU-T G.9804.2 Table 14-1 - PLOAM MIC errors";

        }

        leaf timeouts {
          type bbf-yang:performance-counter64;
          description
            "Retransmission count: missing, late or errored response.
           No response to key request or Request_Registration,
           lack of ACK, etc.

           For G-PON, not applicable.
           For XG-PON, reported per CT.
           For XGS-PON, reported per CT.
           For 25GS-PON, reported per CT.
           For NG-PON2, reported per CT.
           For 50G-PON, reported per CT.";
          reference
            "ITU-T G.987.3 Table 14-1 - PLOAM timeouts;
            ITU-T G.989.3 Amd.2 Table 14-1 - PLOAM timeouts;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - PLOAM timeouts;
            ITU-T G.9804.2 Table 14-1 - PLOAM timeouts";

        }

        leaf dying-gasps {
          type bbf-yang:performance-counter64;
          description
            "Count of dying gasp bursts received.

           For G-PON, not applicable.
           For XG-PON, reported per vANI.
           For XGS-PON, reported per vANI.
           For 25GS-PON, reported per vANI.
           For NG-PON2, reported per vANI.
           For 50G-PON, reported per vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - DG count;
            ITU-T G.989.3 Amd.2 Table 14-1 - DG count;
            ITU-T G.9807.1 Amd.1 Table C.14.1 DG count;
            ITU-T G.9804.2 Table 14-1 - DG count";

        }

        container downstream-messages {
          description
            "Performance counters associated with Physical Layer
           Operations, Administrations and Maintenance (PLOAM)
           messages sent by the Optical Line Termination (OLT)
           Channel Termination (CT).";
          leaf total {
            type bbf-yang:performance-counter64;
            description
              "Count of Physical Layer Operations, Administrations and
             Maintenance (PLOAM) messages sent by the Optical Line
             Termination (OLT) Channel Termination (CT), received by
             Optical Network Unit (ONU) either broadcast or
             directed to the specific ONU-ID.

             For G-PON, not applicable.
             For XG-PON, reported per ANI, vANI and CT.
             For XGS-PON, reported per ANI, vANI and CT.
             For 25GS-PON, reported per ANI, vANI and CT.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.987.3 Table 14-1 - Downstream PLOAM message
              count;
              ITU-T G.989.3 Amd.2 Table 14-1 - Downstream PLOAM message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Downstream PLOAM
              message count;
              ITU-T G.9804.2 Table 14-1 - Downstream PLOAM message
              count";

          }

          leaf system-profile {
            type bbf-yang:performance-counter64;
            description
              "Count of System_Profile Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI and CT.
             For 50G-PON, reported per ANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - System_Profile message
              count;
              ITU-T G.9804.2 Table 14-1 - System_Profile message
              count";

          }

          leaf channel-profile {
            type bbf-yang:performance-counter64;
            description
              "Count of Channel_Profile Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI and CT.
             For 50G-PON, reported per ANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Channel_Profile message
              count;
              ITU-T G.9804.2 Table 14-1 - Channel_Profile message
              count";

          }

          leaf burst-profile {
            type bbf-yang:performance-counter64;
            description
              "Count of Burst_Profile Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and CT.
             For XGS-PON, reported per ANI and CT.
             For 25GS-PON, reported per ANI and CT.
             For NG-PON2, reported per ANI and CT.
             For 50G-PON, reported per ANI and CT.";
            reference
              "ITU-T G.987.3 Table 14-1 - Profile;
              ITU-T G.989.3 Amd.2 Table 14-1 - Burst_Profile message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Burst_Profile message
              count;
              ITU-T G.9804.2 Table 14-1 - Burst_Profile message count";

          }

          leaf assign-onu-id {
            type bbf-yang:performance-counter64;
            description
              "Count of Assign_ONU-ID Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and CT.
             For XGS-PON, reported per ANI and CT.
             For 25GS-PON, reported per ANI and CT.
             For NG-PON2, reported per ANI and CT.
             For 50G-PON, reported per ANI and CT.";
            reference
              "ITU-T G.987.3 Table 14-1 - Assign_ONU-ID;
              ITU-T G.989.3 Amd.2 Table 14-1 - Assign_ONU-ID message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Assign_ONU-ID message
              count;
              ITU-T G.9804.2 Table 14-1 - Assign_ONU-ID message count";

          }

          leaf ranging-time {
            type bbf-yang:performance-counter64;
            description
              "Count of Ranging_Time Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI, vANI and CT.
             For XGS-PON, reported per ANI, vANI and CT.
             For 25GS-PON, reported per ANI, vANI and CT.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.987.3 Table 14-1 - Ranging_Time message count;
              ITU-T G.989.3 Amd.2 Table 14-1 - Ranging_Time message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Ranging_Time message
              count;
              ITU-T G.9804.2 Table 14-1 - Ranging_Time message count";

          }

          leaf protect-control {
            type bbf-yang:performance-counter64;
            description
              "Count of Protection_Control Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Protection_Control
              message count;
              ITU-T G.9804.2 Table 14-1 - Protection_Control message
              count";

          }

          container adjust-tx-wavelength {
            description
              "Performance counters associated with Adjust_Tx_Wavelength
             Physical Layer Operations, Administrations and
             Maintenance (PLOAM) messages.";
            leaf total {
              type bbf-yang:performance-counter64;
              description
                "Count of Adjust_Tx_Wavelength Physical Layer
               Operations, Administrations and Maintenance (PLOAM)
               messages sent by the Optical Line Termination (OLT)
               Channel Termination (CT).

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and
               CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Adjust_Tx_Wavelength
                message count;
                ITU-T G.9804.2 Table 14-1 - Adjust_Tx_Wavelength
                message count";

            }

            leaf wavelength-dithering {
              type bbf-yang:performance-counter64;
              description
                "Count of Physical Layer Operations, Administrations and
               Maintenance (PLOAM) messages generated by the
               wavelength dithering process and send by the Optical
               Line Termination (OLT) Channel Termination (CT).

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and
               CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Wavelength dithering
                Adjust_Tx_Wavelength message count;
                ITU-T G.9804.2 Table 14-1 - Wavelength dithering
                Adjust_Tx_Wavelength message count";

            }

            leaf adjustment-amplitude {
              type bbf-yang:performance-counter64;
              description
                "An estimator of the absolute value of the transmission
               wavelength adjustment.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI and vANI.
               For 50G-PON, reported per ANI and vANI.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Adjust_Tx_Wavelength
                adjustment amplitude;
                ITU-T G.9804.2 Table 14-1 - Adjust_Tx_Wavelength
                adjustment amplitude";

            }

            leaf unsatisfied-requests {
              type bbf-yang:performance-counter64;
              description
                "Adjust_Tx_Wavelength requests not applied or partially
               applied due to target upstream wavelength being out of
               transmit tuning range.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI.
               For 50G-PON, reported per ANI.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Unsatisfied
                Adjust_Tx_Wavelength requests;
                ITU-T G.9804.2 Table 14-1 - Unsatisfied
                Adjust_Tx_Wavelength requests";

            }
          }  // container adjust-tx-wavelength

          leaf deactivate-onu-id {
            type bbf-yang:performance-counter64;
            description
              "Count of Deactivate_ONU-ID Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and CT.
             For XGS-PON, reported per ANI and CT.
             For 25GS-PON, reported per ANI and CT.
             For NG-PON2, reported per ANI and CT.
             For 50G-PON, reported per ANI and CT.";
            reference
              "ITU-T G.987.3 Table 14-1 - Deactivate_ONU-ID;
              ITU-T G.989.3 Amd.2 Table 14-1 - Deactivate_ONU-ID
              message count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Deactivate_ONU-ID
              message count;
              ITU-T G.9804.2 Table 14-1 - Deactivate_ONU-ID message
              count";

          }

          leaf disable-serial-number {
            type bbf-yang:performance-counter64;
            description
              "Count of Disable_Serial_Number Physical Layer
             Operations, Administrations and Maintenance (PLOAM)
             messages sent by the Optical Line Termination (OLT)
             Channel Termination (CT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and CT.
             For XGS-PON, reported per ANI and CT.
             For 25GS-PON, reported per ANI and CT.
             For NG-PON2, reported per ANI and CT.
             For 50G-PON, reported per ANI and CT.";
            reference
              "ITU-T G.987.3 Table 14-1 - Disable_Serial_Number;
              ITU-T G.989.3 Amd.2 Table 14-1 - Disable_Serial_Number
              message count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Disable_Serial_Number
              message count;
              ITU-T G.9804.2 Table 14-1 - Disable_Serial_Number message
              count";

          }

          leaf request-registration {
            type bbf-yang:performance-counter64;
            description
              "Count of Request_Registration Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and vANI.
             For XGS-PON, reported per ANI and vANI.
             For 25GS-PON, reported per ANI and vANI.
             For NG-PON2, reported per ANI and vANI.
             For 50G-PON, reported per ANI and vANI.";
            reference
              "ITU-T G.987.3 Table 14-1 - Request_Registration;
              ITU-T G.989.3 Amd.2 Table 14-1 - Request_Registration
              message count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Request_Registration
              message count;
              ITU-T G.9804.2 Table 14-1 - Request_Registration message
              count";

          }

          leaf assign-alloc-id {
            type bbf-yang:performance-counter64;
            description
              "Count of Assign_Alloc-ID Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and vANI.
             For XGS-PON, reported per ANI and vANI.
             For 25GS-PON, reported per ANI and vANI.
             For NG-PON2, reported per ANI and vANI.
             For 50G-PON, reported per ANI and vANI.";
            reference
              "ITU-T G.987.3 Table 14-1 - Assign_Alloc-ID;
              ITU-T G.989.3 Amd.2 Table 14-1 - Assign_Alloc-ID message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Assign_Alloc-ID
              message count;
              ITU-T G.9804.2 Table 14-1 - Assign_Alloc-ID message
              count";

          }

          leaf key-control {
            type bbf-yang:performance-counter64;
            description
              "Count of Key_Control Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI, vANI and CT.
             For XGS-PON, reported per ANI, vANI and CT.
             For 25GS-PON, reported per ANI, vANI and CT.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.987.3 Table 14-1 - Key_Control;
              ITU-T G.989.3 Amd.2 Table 14-1 - Key_Control message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Key_Control message
              count;
              ITU-T G.9804.2 Table 14-1 - Key_Control message count";

          }

          leaf sleep-allow {
            type bbf-yang:performance-counter64;
            description
              "Count of Sleep_Allow Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Line Termination (OLT) Channel Termination
             (CT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI, vANI and CT.
             For XGS-PON, reported per ANI, vANI and CT.
             For 25GS-PON, reported per ANI, vANI and CT.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.987.3 Table 14-1 - Sleep_Allow;
              ITU-T G.989.3 Amd.2 Table 14-1 - Sleep_Allow message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Sleep_Allow message
              count;
              ITU-T G.9804.2 Table 14-1 - Sleep_Allow message count";

          }

          container tuning-control {
            description
              "Performance counters associated with the Tuning_Control
             Physical Layer Operations, Administrations and
             Maintenance (PLOAM) messages.";
            leaf request-operation {
              type bbf-yang:performance-counter64;
              description
                "Count of Tuning_Control with Request operation code
               Physical Layer Operations, Administrations and
               Maintenance (PLOAM) messages sent by the Optical Line
               Termination (OLT) Channel Termination (CT).

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning_Control message
                count, Request operation code;
                ITU-T G.9804.2 Table 14-1 - Tuning_Control message
                count, Request operation code";

            }

            leaf complete-operation {
              type bbf-yang:performance-counter64;
              description
                "Count of Tuning_Control with Complete_d operation code
               Physical Layer Operations, Administrations and
               Maintenance (PLOAM) messages sent by the Optical Line
               Termination (OLT) Channel Termination (CT).

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning_Control message
                count, Complete_d operation code;
                ITU-T G.9804.2 Table 14-1 - Tuning_Control message
                count, Complete_d operation code";

            }
          }  // container tuning-control
        }  // container downstream-messages

        leaf calibration-request {
          type bbf-yang:performance-counter64;
          description
            "Count of Calibration_Request Physical Layer Operations,
           Administrations and Maintenance (PLOAM) messages sent by
           the Optical Line Termination (OLT) Channel Termination
           (CT).

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, reported per ANI and CT.
           For 50G-PON, reported per ANI and CT.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Calibration_Request
            message count;
            ITU-T G.9804.2 Table 14-1 - Calibration_Request message
            count";

        }

        leaf power-inquire {
          type bbf-yang:performance-counter64;
          description
            "Count of Power_Consumption_Inquire Physical Layer
           Operations, Administrations and Maintenance (PLOAM)
           messages sent by the Optical Line Termination (OLT) Channel
           Termination (CT).

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, not applicable.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.9804.2 Table 14-1 -
            Power_Consumption_Inquire message count";

        }

        leaf reboot-onu {
          type bbf-yang:performance-counter64;
          description
            "Count of Reboot_ONU Physical Layer Operations,
           Administrations and Maintenance (PLOAM) messages sent by
           the Optical Line Termination (OLT) Channel Termination
           (CT).

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, not applicable.
           For 50G-PON, reported per ANI and CT.";
          reference
            "ITU-T G.9804.2 Table 14-1 - Reboot_ONU message count";

        }

        leaf bonded-channel-status {
          type bbf-yang:performance-counter64;
          description
            "Count of Bonded_Channel_Status Physical Layer Operations,
           Administrations and Maintenance (PLOAM) messages sent by
           the Optical Line Termination (OLT) Channel Termination
           (CT).

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, not applicable.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.9804.2 Table 14-1 - Bonded_Channel_Status message
            count";

        }

        leaf get-set-capabilities {
          type bbf-yang:performance-counter64;
          description
            "Count of Get_Set_Capabilities Physical Layer Operations,
           Administrations and Maintenance (PLOAM) messages sent by
           the Optical Line Termination (OLT) Channel Termination
           (CT).

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, not applicable.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.9804.2 Table 14-1 - Get_Set_Capabilities message
            count";

        }

        container upstream-messages {
          description
            "Performance counters associated with Physical Layer
           Operations, Administrations and Maintenance (PLOAM)
           messages sent by the Optical Network Unit (ONU).";
          leaf total {
            type bbf-yang:performance-counter64;
            description
              "Count of messages (other than Acknowledgement)
             sent by the Optical Network Unit (ONU), received by
             Optical Line Termination (OLT).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and vANI.
             For XGS-PON, reported per ANI and vANI.
             For 25GS-PON, reported per ANI and vANI.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.987.3 Table 14-1 - Upstream PLOAM message count;
              ITU-T G.989.3 Amd.2 Table 14-1 - Upstream PLOAM message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Upstream PLOAM
              message count;
              ITU-T G.9804.2 Table 14-1 - Upstream PLOAM message
              count";

          }

          container serial-number-onu {
            description
              "Performance counters associated with the upstream
             Serial_Number_ONU messages.";
            leaf inband {
              type bbf-yang:performance-counter64;
              description
                "Count of Serial_Number_ONU Physical Layer Operations,
               Administrations and Maintenance (PLOAM) messages sent
               by the Optical Network Unit (ONU).

               For G-PON, not applicable.
               For XG-PON, reported per ANI, vANI and CT.
               For XGS-PON, reported per ANI, vANI and CT.
               For 25GS-PON, reported per ANI, vANI and CT.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.987.3 Table 14-1 - Serial_Number_ONU;
                ITU-T G.989.3 Amd.2 Table 14-1 - Serial_Number_ONU
                (in-band) message count;
                ITU-T G.9807.1 Amd.1 Table C.14.1 - Serial_Number_ONU
                message count;
                ITU-T G.9804.2 Table 14-1 - Serial_Number_ONU message
                count";

            }

            leaf amcc {
              type bbf-yang:performance-counter64;
              description
                "Count of Serial_Number_ONU Physical Layer Operations,
               Administrations and Maintenance (PLOAM) (AMCC) messages
               sent by the Optical Network Unit (ONU).

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, not applicable.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Serial_Number_ONU
                (AMCC) message count";

            }
          }  // container serial-number-onu

          leaf registration {
            type bbf-yang:performance-counter64;
            description
              "Count of Registration Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Network Unit (ONU).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and vANI.
             For XGS-PON, reported per ANI and vANI.
             For 25GS-PON, reported per ANI and vANI.
             For NG-PON2, reported per ANI and vANI.
             For 50G-PON, reported per ANI and vANI.";
            reference
              "ITU-T G.987.3 Table 14-1 - Registration;
              ITU-T G.989.3 Amd.2 Table 14-1 - Registration message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Registration message
              count;
              ITU-T G.9804.2 Table 14-1 - Registration message count";

          }

          leaf key-report {
            type bbf-yang:performance-counter64;
            description
              "Count of Key_Report Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Network Unit (ONU).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and vANI.
             For XGS-PON, reported per ANI and vANI.
             For 25GS-PON, reported per ANI and vANI.
             For NG-PON2, reported per ANI and vANI.
             For 50G-PON, reported per ANI and vANI.";
            reference
              "ITU-T G.987.3 Table 14-1 - Key_Report;
              ITU-T G.989.3 Amd.2 Table 14-1 - Key_Report message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Key_Report message
              count;
              ITU-T G.9804.2 Table 14-1 - Key_Report message count";

          }

          leaf acknowledgement {
            type bbf-yang:performance-counter64;
            description
              "Count of Acknowledgement Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Network Unit (ONU).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and vANI.
             For XGS-PON, reported per ANI and vANI.
             For 25GS-PON, reported per ANI and vANI.
             For NG-PON2, reported per ANI and vANI.
             For 50G-PON, reported per ANI and vANI.";
            reference
              "ITU-T G.987.3 Table 14-1 - Acknowledgement;
              ITU-T G.989.3 Amd.2 Table 14-1 - Acknowledgement message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Acknowledgement
              message count;
              ITU-T G.9804.2 Table 14-1 - Acknowledgement message
              count";

          }

          leaf sleep-request {
            type bbf-yang:performance-counter64;
            description
              "Count of Sleep_Request Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages sent by
             the Optical Network Unit (ONU).

             For G-PON, not applicable.
             For XG-PON, reported per ANI and vANI.
             For XGS-PON, reported per ANI and vANI.
             For 25GS-PON, reported per ANI and vANI.
             For NG-PON2, reported per ANI and vANI.
             For 50G-PON, reported per ANI and vANI.";
            reference
              "ITU-T G.987.3 Table 14-1 - Sleep_Request;
              ITU-T G.989.3 Amd.2 Table 14-1 - Sleep_Request message
              count;
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Sleep_Request message
              count;
              ITU-T G.9804.2 Table 14-1 - Sleep_Request message count";

          }

          container tuning-response {
            description
              "Performance counters associated with the Tuning_Response
             Physical Layer Operations, Administrations and
             Maintenance (PLOAM) messages.";
            leaf ack-nack {
              type bbf-yang:performance-counter64;
              description
                "Count of Tuning_Response with ACK/NACK operation code
               Physical Layer Operations, Administrations and
               Maintenance (PLOAM) messages sent by the Optical
               Network Unit (ONU).

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI and vANI.
               For 50G-PON, reported per ANI and vANI.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning_Response
                message count, ACK/NACK operation codes;
                ITU-T G.9804.2 Table 14-1 - Tuning_Response
                message count, ACK/NACK operation codes";

            }

            leaf complete-rollback {
              type bbf-yang:performance-counter64;
              description
                "Count of Tuning_Respons with Complete_u/Rollback
               operation codes Physical Layer Operations,
               Administrations and Maintenance (PLOAM) messages sent
               by the Optical Network Unit (ONU).

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI and vANI.
               For 50G-PON, reported per ANI and vANI.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning_Response
                message count, Complete_u/Rollback operation codes;
                ITU-T G.9804.2 Table 14-1 - Tuning_Response message
                count, Complete_u/Rollback operation codes";

            }
          }  // container tuning-response

          leaf power-consumption-report {
            type bbf-yang:performance-counter64;
            description
              "Count of Power_Consumption_Report Physical Layer
             Operations, Administrations and Maintenance (PLOAM)
             messages sent by the Optical Network Unit (ONU).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Power_Consumption_Report
              message count;
              ITU-T G.9804.2 Table 14-1 - Power_Consumption_Report
              message count";

          }

          leaf bonded-channel-rsp {
            type bbf-yang:performance-counter64;
            description
              "Count of Bonded_Channel_Response Physical Layer
             Operations, Administrations and Maintenance (PLOAM)
             messages sent by the Optical Network Unit (ONU).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, not applicable.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.9804.2 Table 14-1 - Bonded_Channel_Response
              message count";

          }

          leaf onu-capabilities {
            type bbf-yang:performance-counter64;
            description
              "Count of ONU_Capabilities Physical Layer
             Operations, Administrations and Maintenance (PLOAM)
             messages sent by the Optical Network Unit (ONU).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, not applicable.
             For 50G-PON, reported per ANI and vANI.";
            reference
              "ITU-T G.9804.2 Table 14-1 - ONU_Capabilities message
              count";

          }
        }  // container upstream-messages
      }  // container ploam
    }  // grouping xpon-ploam-pm

    grouping xpon-activation-pm {
      description
        "xPON activation performance counters.";
      container activation {
        description
          "xPON activation performance counters.";
        container non-discernible-activation-attempts {
          description
            "Performance counters associated with non-discernible
           activation attempts.";
          leaf in-band {
            type bbf-yang:performance-counter64;
            description
              "Quiet window bursts from which the Optical Line
             Termination (OLT) Channel Termination (CT) is unable
             obtain the sender's Serial Number (SN).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, reported per CT.
             For 25GS-PON, reported per CT.
             For NG-PON2, reported per CT.
             For 50G-PON, reported per CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Non-discernible
              activation attempts (in-band);
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Non-discernible
              activation attempts;
              ITU-T G.9804.2 Table 14-1 - Non-discernible activation
              attempts";

          }

          leaf amcc {
            type bbf-yang:performance-counter64;
            description
              "AMCC window bursts from which the Optical Line
             Termination (OLT) Channel Termination (CT) is unable
             obtain the sender's Serial Number (SN).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per CT.
             For 50G-PON, not applicable.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Non-discernible
              activation attempts (AMCC)";

          }
        }  // container non-discernible-activation-attempts

        container foreign-activation-attempts {
          description
            "Performance counters associated with non-discernible
           activation attempts.";
          leaf in-band {
            type bbf-yang:performance-counter64;
            description
              "Unrecognized Serial Number (SN).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, reported per CT.
             For 25GS-PON, reported per CT.
             For NG-PON2, reported per CT.
             For 50G-PON, reported per CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Foreign activation
              attempts (in-band);
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Foreign activation
              attempts;
              ITU-T G.9804.2 Table 14-1 - Foreign activation attempts";

          }

          leaf amcc {
            type bbf-yang:performance-counter64;
            description
              "Unrecognized Serial Number (SN).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per CT.
             For 50G-PON, not applicable.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Foreign activation
              attempts (AMCC)";

          }
        }  // container foreign-activation-attempts

        container successful-new-activations {
          description
            "Performance counters associated with non-discernible
           activation attempts.";
          leaf in-band {
            type bbf-yang:performance-counter64;
            description
              "Optical Network Unit (ONU) requires ONU-ID assignment and
             ranging.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, reported per vANI and CT.
             For 25GS-PON, reported per vANI and CT.
             For NG-PON2, reported per vANI and CT.
             For 50G-PON, reported per vANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Successful new
              activations (in-band);
              ITU-T G.9807.1 Amd.1 Table C.14.1 - Successful new
              activations;
              ITU-T G.9804.2 Table 14-1 - Successful new activations";

          }

          leaf amcc {
            type bbf-yang:performance-counter64;
            description
              "AMCC window bursts from which the Optical Line
             Termination (OLT) Channel Termination (CT) is unable to
             obtain the sender's Serial Number (SN).

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per vANI and CT.
             For 50G-PON, not applicable.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Successful new
              activations (AMCC)";

          }
        }  // container successful-new-activations

        container successful-precfg-twdm-channel-handovers {
          description
            "Performance counters associated with successful
           pre-configured TWDM channel handovers.";
          leaf in-band {
            type bbf-yang:performance-counter64;
            description
              "Optical Network Unit (ONU) calibrated, pre-ranged;
             downstream and upstream wavelength channels set in
             advance with Protection_Control Physical Layer
             Operations, Administrations and Maintenance (PLOAM)
             message.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per vANI and CT.
             For 50G-PON, reported per vANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Successful
              pre-configured TWDM channel handovers (in-band);
              ITU-T G.9804.2 Table 14-1 - Successful pre-configured
              TWDM channel handovers";

          }

          leaf amcc {
            type bbf-yang:performance-counter64;
            status deprecated;
            description
              "Optical Network Unit (ONU) retunes to the channel of its
             choice. ONU calibrated, pre-ranged.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per vANI and CT.

             This counter is not available via AMCC, so this leaf
             has been deprecated.";
          }
        }  // container successful-precfg-twdm-channel-handovers

        container successful-discretionary-twdm-channel-handovers {
          description
            "Performance counters associated with successful
           discretionary TWDM channel handovers.";
          leaf in-band {
            type bbf-yang:performance-counter64;
            description
              "Optical Network Unit (ONU) calibrated, pre-ranged
             downstream and upstream wavelength channels set in
             advance with Protection_Control Physical Layer
             Operations, Administrations and Maintenance (PLOAM)
             message.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per vANI and CT.
             For 50G-PON, reported per vANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Successful discretionary
              TWDM channel handovers (in-band);
              ITU-T G.9804.2 Table 14-1 - Successful discretionary
              TWDM channel handovers";

          }
        }  // container successful-discretionary-twdm-channel-handovers
      }  // container activation
    }  // grouping xpon-activation-pm

    grouping xpon-tuning-control-pm {
      description
        "xPON tuning control performance counters.";
      container tuning-control {
        description
          "xPON tuning control performance counters.";
        leaf requests-for-rx-or-rx-and-tx {
          type bbf-yang:performance-counter64;
          description
            "Count of PLOAMd Tuning_Control (Request) messages
           for Receive or Receive/Transmit.

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control requests
            for Rx only or Rx and Tx;
            ITU-T G.9804.2 Table 14-1 - Tuning control requests for Rx
            only or Rx and Tx";

        }

        leaf requests-for-tx {
          type bbf-yang:performance-counter64;
          description
            "Count of PLOAMd Tuning_Control (Request) messages for
           Transmit.

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, reported per ANI, vANI and CT.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control requests
            for Tx only;
            ITU-T G.9804.2 Table 14-1 - Tuning control requests for Tx
            only";

        }

        container rejected-requests {
          description
            "Performance counters associated with rejected tuning
           control requests, Tuning_Response(NACK).";
          leaf internal-condition {
            type bbf-yang:performance-counter64;
            description
              "Count of PLOAMu Tuning_Response(NACK) messages with
             Response Code = INT_SFC

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control requests
              rejected on internal condition (not ready to start
              transceiver tuning by specified time);
              ITU-T G.9804.2 Table 14-1 - Tuning control requests
              rejected on internal condition (not ready to start
              transceiver tuning by specified time)";

          }

          container downstream {
            description
              "Performance counters associated with tuning control
             requests rejected due to downstream wavelength channel
             inconsistency.";
            leaf total {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = DS_xxx.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on target downstream wavelength
                channel inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control requests
                rejected on target downstream wavelength channel
                inconsistency";

            }

            leaf albl {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = DS_ALBL.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on downstream administrative label
                inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control requests
                rejected on downstream administrative label
                inconsistency";

            }

            leaf void {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = DS_VOID.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on void downstream wavelength channel
                descriptor;
                ITU-T G.9804.2 Table 14-1 - Tuning control requests
                rejected on void downstream wavelength channel
                descriptor";

            }

            leaf part {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = DS_PART.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on channel partition violation;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on channel partition violation";

            }

            leaf tunr {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = DS_TUNR.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected due to target DS wavelength channel
                being out of Rx tuning range;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected due to target DS wavelength channel
                being out of Rx tuning range";

            }

            leaf lnrt {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = DS_LNRT.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on downstream line rate
                inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control requests
                rejected on downstream line rate inconsistency";

            }

            leaf lncd {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = DS_LNCD.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on downstream line code
                inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control requests
                rejected on downstream line code inconsistency";

            }
          }  // container downstream

          container upstream {
            description
              "Performance counters associated with tuning control
             requests rejected due to upstream wavelength channel
             inconsistency.";
            leaf total {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = US_xxx.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on target upstream wavelength channel
                inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on target upstream wavelength channel
                inconsistency";

            }

            leaf albl {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = US_ALBL.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on upstream administrative label
                inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control requests
                rejected on upstream administrative label
                inconsistency";

            }

            leaf void {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = US_VOID.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on void upstream wavelength channel
                descriptor;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on void upstream wavelength channel
                descriptor";

            }

            leaf tunr {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = US_TUNR.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected due to target US wavelength channel
                being out of Tx tuning range;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected due to target US wavelength channel
                being out of Tx tuning range";

            }

            leaf clbr {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages
               with ResponseCode = US_CLBR.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control request
                rejected due to insufficient calibration accuracy;
                ITU-T G.9804.2 Table 14-1 - Tuning control request
                rejected due to insufficient calibration accuracy";

            }

            leaf lktp {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = US_LKTP.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on upstream optical link type
                inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on upstream optical link type
                inconsistency";

            }

            leaf lnrt {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = US_LNRT.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on upstream line rate inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on upstream line rate inconsistency";

            }

            leaf lncd {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response(NACK) messages with
               ResponseCode = US_LNCD.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on upstream line code inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on upstream line code inconsistency";

            }
          }  // container upstream
        }  // container rejected-requests

        leaf fulfilled-requests {
          type bbf-yang:performance-counter64;
          description
            "Optical Line Termination (OLT) CT: Tuning_Control (Request)
           Physical Layer Operations, Administrations and Maintenance
           (PLOAM) messages sent, for which Inter Channel Termination
           Protocol (ICTP) handover closure has been indicated.

           Optical Network Unit (ONU): Tuning_Control (Request) PLOAM
           messages received, for which US tuning confirmation has
           been obtained in the specified target channel.

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, reported per ANI, vANI and CT.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control requests
            fulfilled with ONU reacquired at target channel;
            ITU-T G.9804.2 Table 14-1 - Tuning control requests
            fulfilled with ONU reacquired at target channel";

        }

        container failed-requests {
          description
            "Performance counters associated with failed tuning control
           requests.";
          leaf target-ds-wl-channel-not-found {
            type bbf-yang:performance-counter64;
            description
              "Timer TO4 expiration in downstream Tuning state (O8)
             in the target channel.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI.
             For 50G-PON, reported per ANI.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control requests
              failure reason: target DS wavelength channel not found;
              ITU-T G.9804.2 Table 14-1 - Tuning control requests
              failure reason: target DS wavelength channel not found";

          }

          leaf no-feedback-in-target-us-wl-channel {
            type bbf-yang:performance-counter64;
            description
              "Timer TO4 expiration in downstream Tuning state (O8)
             in the target channel.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI.
             For 50G-PON, reported per ANI.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control requests
              failure reason: no tuning feedback in target US
              wavelength channel;
              ITU-T G.9804.2 Table 14-1 - Tuning control requests
              failure reason: no tuning feedback in target US
              wavelength channel";

          }
        }  // container failed-requests

        leaf resolved-requests {
          type bbf-yang:performance-counter64;
          description
            "Optical Network Unit (ONU) fails to retune to the specified
           target channel, but retunes to the channel of its choice.

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, reported per ANI, vANI and CT.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control requests
            resolved with ONU reacquired at discretionary channel;
            ITU-T G.9804.2 Table 14-1 - Tuning control requests
            resolved with ONU reacquired at discretionary channel";

        }

        container failed-requests-rollback {
          description
            "Performance counters associated with failed tuning
           control requests with Optical Network Unit (ONU) Rollback,
           Tuning_Response(Rollback).";
          leaf communication-condition {
            type bbf-yang:performance-counter64;
            description
              "Count of PLOAMu Tuning_Response (Rollback) messages with
             ResponseCode = COM_DS.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control requests
              failed with ONU Rollback due to communication condition;
              ITU-T G.9804.2 Table 14-1 - Tuning control requests
              failed with ONU Rollback due to communication condition";

          }

          container downstream {
            description
              "Performance counters associated with tuning control
             requests failed with Optical Network Unit (ONU) Rollback
             due to downstream target wavelength channel
             inconsistency.";
            leaf total {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = DS_xxx

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to downstream
                target wavelength channel inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to downstream
                target wavelength channel inconsistency";

            }

            leaf albl {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = DS_ALBL.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to downstream
                administrative label inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to downstream
                administrative label inconsistency";

            }

            leaf lktp {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = DS_LKTP.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to downstream
                optical link type inconsistency;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to downstream
                optical link type inconsistency";

            }
          }  // container downstream

          container upstream {
            description
              "Performance counters associated with tuning control
             requests failed with Optical Network Unit (ONU) Rollback
             due to downstream target wavelength channel parameter
             violation.";
            leaf total {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = US_xxx.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to upstream
                target wavelength channel parameter violation;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to upstream
                target wavelength channel parameter violation";

            }

            leaf albl {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = US_ALBL.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to upstream
                administrative label violation;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests failed with ONU Rollback due to upstream
                administrative label violation";

            }

            leaf void {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = US_VOID.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on void upstream wavelength channel
                descriptor;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on void upstream wavelength channel
                descriptor";

            }

            leaf tunr {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = US_TUNR.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on Tx tuning range violation;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on Tx tuning range violation";

            }

            leaf lktp {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = US_LKPT.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 Tuning control requests
                rejected on upstream link type violation;
                ITU-T G.9804.2 Table 14-1 Tuning control requests
                rejected on upstream link type violation";

            }

            leaf lnrt {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = US_LNRT.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on upstream link type violation;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on upstream link type violation";

            }

            leaf lncd {
              type bbf-yang:performance-counter64;
              description
                "Count of PLOAMu Tuning_Response (Rollback) messages
               with ResponseCode = US_LNCD.

               For G-PON, not applicable.
               For XG-PON, not applicable.
               For XGS-PON, not applicable.
               For 25GS-PON, not applicable.
               For NG-PON2, reported per ANI, vANI and CT.
               For 50G-PON, reported per ANI, vANI and CT.";
              reference
                "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control
                requests rejected on upstream line code violation;
                ITU-T G.9804.2 Table 14-1 - Tuning control
                requests rejected on upstream line code violation";

            }
          }  // container upstream
        }  // container failed-requests-rollback

        leaf failed-requests-onu-reactivation {
          type bbf-yang:performance-counter64;
          description
            "Count of state transitions from O5.2 to O8 followed by
           expiration of timer TO4 or timer TO5, thus causing a
           transition to O1 state.

           For G-PON, not applicable.
           For XG-PON, not applicable.
           For XGS-PON, not applicable.
           For 25GS-PON, not applicable.
           For NG-PON2, reported per ANI, vANI and CT.
           For 50G-PON, reported per ANI, vANI and CT.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Tuning control requests
            failed with ONU reactivation;
            ITU-T G.9804.2 Table 14-1 - Tuning control requests failed
            with ONU reactivation";

        }
      }  // container tuning-control
    }  // grouping xpon-tuning-control-pm

    grouping xpon-power-levelling-pm {
      description
        "xPON power levelling performance counters.";
      container power-levelling {
        description
          "xPON power levelling performance counters.";
        container change-power-level-messages {
          description
            "Performance counters associated with Change_Power_Level
           messages.";
          leaf rejected {
            type bbf-yang:performance-counter64;
            description
              "Count of Change_Power_Level Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages
             acknowledged with Parameter Error Completion code.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Change_Power_Level
              messages rejected due to Parameter Error;
              ITU-T G.9804.2 Table 14-1 - Change_Power_Level messages
              rejected due to Parameter Error";

          }

          leaf without-completion-ack {
            type bbf-yang:performance-counter64;
            description
              "Count of Change_Power_Level Physical Layer Operations,
             Administrations and Maintenance (PLOAM) messages
             acknowledged with Busy Completion code, but for which no
             acknowledgment with OK completion code is received.

             For G-PON, not applicable.
             For XG-PON, not applicable.
             For XGS-PON, not applicable.
             For 25GS-PON, not applicable.
             For NG-PON2, reported per ANI, vANI and CT.
             For 50G-PON, reported per ANI, vANI and CT.";
            reference
              "ITU-T G.989.3 Amd.2 Table 14-1 - Change_Power_Level
              messages without completion acknowledgement;
              ITU-T G.9804.2 Table 14-1 - Change_Power_Level messages
              without completion acknowledgement";

          }
        }  // container change-power-level-messages
      }  // container power-levelling
    }  // grouping xpon-power-levelling-pm

    grouping xpon-omci-pm {
      description
        "xPON Optical Network Unit Management and Control Interface
       (OMCI) performance counters.";
      container omci {
        description
          "xPON Optical Network Unit Management and Control Interface
         (OMCI) performance counters.";
        leaf baseline-messages {
          type bbf-yang:performance-counter64;
          description
            "Optical Network Unit Management and Control Interface
           (OMCI) baseline message count.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - OMCI baseline message count;
            ITU-T G.989.3 Amd.2 Table 14-1 - OMCI baseline message
            count;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - OMCI baseline message
            count;
            ITU-T G.9804.2 Table 14-1 - OMCI baseline message count";

        }

        leaf extended-messages {
          type bbf-yang:performance-counter64;
          description
            "Optical Network Unit Management and Control Interface
           (OMCI) extended message count.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - OMCI extended message count;
            ITU-T G.989.3 Amd.2 Table 14-1 - OMCI extended message
            count;
            ITU-T G.9807.1 Amd.1 Table C.14.1 OMCI extended message
            count;
            ITU-T G.9804.2 Table 14-1 - OMCI extended message count";

        }

        leaf autonomus-messages {
          type bbf-yang:performance-counter64;
          description
            "Optical Network Unit Management and Control Interface
           (OMCI) Autonomous message count.

           For G-PON, not applicable.
           For XG-PON, reported per vANI.
           For XGS-PON, reported per vANI.
           For 25GS-PON, reported per vANI.
           For NG-PON2, reported per vANI.
           For 50G-PON, reported per vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - Autonomous messages;
            ITU-T G.989.3 Amd.2 Table 14-1 - Autonomous messages;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Autonomous messages;
            ITU-T G.9804.2 Table 14-1 - Autonomous messages";

        }

        leaf mic-errors {
          type bbf-yang:performance-counter64;
          description
            "Count of received Optical Network Unit Management and
           Control Interface (OMCI) messages with Message Integrity
           Check (MIC) errors.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.
           For 50G-PON, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - OMCI MIC errors;
            ITU-T G.989.3 Amd.2 Table 14-1 - OMCI MIC errors;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - OMCI MIC errors;
            ITU-T G.9804.2 Table 14-1 - OMCI MIC errors";

        }
      }  // container omci
    }  // grouping xpon-omci-pm

    grouping xpon-power-monitoring-pm {
      description
        "xPON power monitoring performance counters.";
      container power-monitoring {
        description
          "xPON power monitoring performance counters.";
        leaf tx-optical-power-level {
          type int32;
          units "0.1 dBm";
          description
            "Depending on the network configuration (integrated vs.
           external WM, presence of RE) the maintained value refers
           to one of three reference points: S/R-CP, S/R-CG, or
           S'R'.";
          reference
            "ITU-T G.989.3 Amd.2 Table 14-1 - Transmit Optical power
            level;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Transmit Optical power
            level;
            ITU-T G.9804.2 Table 14-1 - Transmit Optical power level";

        }
      }  // container power-monitoring
    }  // grouping xpon-power-monitoring-pm

    grouping xpon-energy-conservation-pm {
      description
        "xPON energy conservation performance counters.";
      container energy-conservation {
        description
          "xPON energy conservation performance counters.";
        leaf time-spent-in-low-energy-state {
          type bbf-yang:performance-counter64;
          units "microseconds";
          description
            "Time spent in each of the Optical Line Termination (OLT)/
           Optical Network Unit (ONU) low-power states, respectively.

           For G-PON, not applicable.
           For XG-PON, reported per ANI and vANI.
           For XGS-PON, reported per ANI and vANI.
           For 25GS-PON, reported per ANI and vANI.
           For NG-PON2, reported per ANI and vANI.";
          reference
            "ITU-T G.987.3 Table 14-1 - Time spent in each of the
            OLT/ONU low-power states, respectively;
            ITU-T G.989.3 Amd.2 Table 14-1 - Time spent in each of the
            OLT/ONU low-power states, respectively;
            ITU-T G.9807.1 Amd.1 Table C.14.1 - Time spent in each of
            the OLT/ONU low-power states, respectively";

        }
      }  // container energy-conservation
    }  // grouping xpon-energy-conservation-pm

    grouping xpon-performance-counters {
      description
        "Counters associated with current and historical 15 minute
       and 24 hour performance counters for xPON.";
      uses xpon-phy-pm;

      uses xpon-lods-pm;

      uses xpon-gemport-pm;

      uses xpon-utilization-pm;

      uses xpon-ploam-pm;

      uses xpon-activation-pm;

      uses xpon-tuning-control-pm;

      uses xpon-power-levelling-pm;

      uses xpon-omci-pm;

      uses xpon-power-monitoring-pm;

      uses xpon-energy-conservation-pm;
    }  // grouping xpon-performance-counters

    augment /if:interfaces-state/if:interface/bbf-if-pm:performance/bbf-if-pm:intervals-15min/bbf-if-pm:current {
      when
        " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:ani') or "
          + " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:v-ani') or "
          + " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:channel-termination')" {
        description
          "Only applicable to Access Network Interface (ANI), virtual
         Access Network Interface (vANI) or Channel Termination (CT)
         interfaces.";
      }
      description
        "Augment the current 15 minute interface performance counts
       with xPON specific attributes.";
      container xpon {
        description
          "Current 15 minute xPON performance counters.";
        uses xpon-performance-counters;
      }  // container xpon
    }

    augment /if:interfaces-state/if:interface/bbf-if-pm:performance/bbf-if-pm:intervals-15min/bbf-if-pm:history {
      when
        " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:ani') or "
          + " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:v-ani') or "
          + " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:channel-termination')" {
        description
          "Only applicable to Access Network Interface (ANI), virtual
         Access Network Interface (vANI) or Channel Termination (CT)
         interfaces.";
      }
      description
        "Augment the historic 15 minute interface performance counts
       with xPON specific attributes.";
      container xpon {
        description
          "Historic 15 minute xPON performance counters.";
        uses xpon-performance-counters;
      }  // container xpon
    }

    augment /if:interfaces-state/if:interface/bbf-if-pm:performance/bbf-if-pm:intervals-24hr/bbf-if-pm:current {
      when
        " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:ani') or "
          + " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:v-ani') or "
          + " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:channel-termination')" {
        description
          "Only applicable to Access Network Interface (ANI), virtual
         Access Network Interface (vANI) or Channel Termination (CT)
         interfaces.";
      }
      if-feature bbf-if-pm:performance-24hr;
      description
        "Augment the current 24 hour interface performance counts
       with xPON specific attributes.";
      container xpon {
        description
          "Current 24 hour xPON performance counters.";
        uses xpon-performance-counters;
      }  // container xpon
    }

    augment /if:interfaces-state/if:interface/bbf-if-pm:performance/bbf-if-pm:intervals-24hr/bbf-if-pm:history {
      when
        " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:ani') or "
          + " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:v-ani') or "
          + " derived-from-or-self(../../../if:type, "
          + "'bbf-xponift:channel-termination')" {
        description
          "Only applicable to Access Network Interface (ANI), virtual
         Access Network Interface (vANI) or Channel Termination (CT)
         interfaces.";
      }
      if-feature bbf-if-pm:performance-24hr;
      description
        "Augment the historic 24 hour interface performance counts
       with xPON specific attributes.";
      container xpon {
        description
          "Historic 24 hour xPON performance counters.";
        uses xpon-performance-counters;
      }  // container xpon
    }
  }  // module bbf-xpon-performance-management