module ieee802-dot1q-lldp-cn-tlv {

    yang-version 1.1;

    namespace
      'urn:ieee:std:802.1Q:yang:ieee802-dot1q-lldp-cn-tlv';

    prefix lldp-cn-tlv;

    import ieee802-dot1ab-lldp {
      prefix lldp;
    }

    organization
      "Institute of Electrical and Electronics Engineers";

    contact
      "WG-URL: http://ieee802.org/1/
    WG-EMail: stds-802-1-l@ieee.org
    Contact: IEEE 802.1 Working Group Chair
    Postal: C/O IEEE 802.1 Working Group
    IEEE Standards Association
         445 Hoes Lane
         Piscataway, NJ 08854
         USA
    
    E-mail: stds-802-1-chairs@ieee.org";

    description
      "IEEE Std 802.1Q extension TLVs for LLDP
      
    References in this YANG module to IEEE Std 802.1Q are to IEEE Std 
    802.1Q-2022 as amended by IEEE Std 802.1Qcz-2023.

    Copyright (C) IEEE (2023).
      
    This version of this YANG module is part of IEEE Std 802.1Q; see
    the standard itself for full legal notices.";

    revision "2023-07-03" {
      description
        "LLDP extension tlv for congestion notification.";
      reference
        "Annex D of IEEE Std 802.1Q";

    }


    grouping congestion-notification-tlv {
      description
        "Congestion Notification TLV";
      reference
        "D.2.7 of IEEE Std 802.1Q";

      typedef congestion-notification-bit-vector {
        type bits {
          bit priority0 {
            position 0;
            description
              "status for priority0, 0 is FALSE, 1 is TRUE";
          }
          bit priority1 {
            position 1;
            description
              "status for priority1, 0 is FALSE, 1 is TRUE";
          }
          bit priority2 {
            position 2;
            description
              "status for priority2, 0 is FALSE, 1 is TRUE";
          }
          bit priority3 {
            position 3;
            description
              "status for priority3, 0 is FALSE, 1 is TRUE";
          }
          bit priority4 {
            position 4;
            description
              "status for priority4, 0 is FALSE, 1 is TRUE";
          }
          bit priority5 {
            position 5;
            description
              "status for priority5, 0 is FALSE, 1 is TRUE";
          }
          bit priority6 {
            position 6;
            description
              "status for priority6, 0 is FALSE, 1 is TRUE";
          }
          bit priority7 {
            position 7;
            description
              "status for priority7, 0 is FALSE, 1 is TRUE";
          }
        }
        description
          "Describes a bit vector used in Congestion Notification Objects";
        reference
          "32.4.7, 32.4.8 of IEEE Std 802.1Q";

      }
      leaf per-priority-xmit-cnpv-capable {
        type congestion-notification-bit-vector;
        description
          "Indicates if a priority on this Port is operating as a CNPV";
        reference
          "D.2.7.3, 32.4.7 of IEEE Std 802.1Q";

      }

      leaf per-priority-xmit-ready {
        type congestion-notification-bit-vector;
        description
          "Indicates if the priority remap defenses for this Port and CNPV
        have been disabled";
        reference
          "D.2.7.4, 32.4.8 of IEEE Std 802.1Q";

      }
    }  // grouping congestion-notification-tlv

    augment /lldp:lldp/lldp:port {
      description
        "Augments port with the congestion notification extension tlv";
      leaf tlvs-tx-org-congestion-notification-enable {
        type boolean;
        description
          "Leaf that indicates if congestion notification tlv is enabled
        from Table D-1 of IEEE Std 802.1Q";
        reference
          "D.2 of IEEE Std 802.1Q";

      }

      container congestion-notification-tlv-extension {
        description
          "The Congestion Notification TLV";
        uses congestion-notification-tlv;
      }  // container congestion-notification-tlv-extension
    }

    augment /lldp:lldp/lldp:port/lldp:remote-systems-data {
      description
        "Augments port remote-systems-data with received cn extension TLVs";
      container congestion-notification-tlv-extension {
        description
          "Holds a received Congestion Notification TLV";
        uses congestion-notification-tlv;
      }  // container congestion-notification-tlv-extension
    }
  }  // module ieee802-dot1q-lldp-cn-tlv