module openconfig-transport-types {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/transport-types";

    prefix oc-opt-types;

    import openconfig-platform-types {
      prefix oc-platform-types;
    }
    import openconfig-extensions {
      prefix oc-ext;
    }
    import openconfig-types {
      prefix oc-types;
    }

    organization "OpenConfig working group";

    contact
      "OpenConfig working group
    www.openconfig.net";

    description
      "This module contains general type definitions and identities
    for optical transport models.";

    revision "2020-08-12" {
      description
        "Additional tributary rates.";
      reference
        "0.12.0";

    }

    revision "2020-04-24" {
      description
        "Add 400G protocol and additional tributary half rates.";
      reference
        "0.11.0";

    }

    revision "2020-04-22" {
      description
        "Add AOC and DAC connector identities.";
      reference
        "0.10.0";

    }

    revision "2019-06-27" {
      description
        "Add FIBER_JUMPER_TYPE identityref.";
      reference
        "0.9.0";

    }

    revision "2019-06-21" {
      description
        "Generalize and rename optical port type identity";
      reference
        "0.8.0";

    }

    revision "2018-11-21" {
      description
        "Add OpenConfig module metadata extensions.";
      reference
        "0.7.1";

    }

    revision "2018-10-23" {
      description
        "Added frame mapping protocols for logical channels assignments
      and tributary slot granularity for OTN logical channels";
      reference
        "0.7.0";

    }

    revision "2018-05-16" {
      description
        "Added interval,min,max time to interval stats.";
      reference
        "0.6.0";

    }

    revision "2017-08-16" {
      description
        "Added ODU Cn protocol type";
      reference
        "0.5.0";

    }

    revision "2016-12-22" {
      description
        "Fixes and additions for terminal optics model";
      reference
        "0.4.0";

    }

    oc-ext:openconfig-version "0.12.0";
    oc-ext:regexp-posix;
    oc-ext:catalog-organization "openconfig";
    oc-ext:origin "openconfig";

    typedef frequency-type {
      type uint64;
      units "MHz";
      description
        "Type for optical spectrum frequency values";
    }

    typedef admin-state-type {
      type enumeration {
        enum "ENABLED" {
          value 0;
          description
            "Sets the channel admin state to enabled";
        }
        enum "DISABLED" {
          value 1;
          description
            "Sets the channel admin state to disabled";
        }
        enum "MAINT" {
          value 2;
          description
            "Sets the channel to maintenance / diagnostic mode";
        }
      }
      description
        "Administrative state modes for
    logical channels in the transponder model.";
    }

    typedef loopback-mode-type {
      type enumeration {
        enum "NONE" {
          value 0;
          description
            "No loopback is applied";
        }
        enum "FACILITY" {
          value 1;
          description
            "A loopback which directs traffic normally transmitted
          on the port back to the device as if received on the same
          port from an external source.";
        }
        enum "TERMINAL" {
          value 2;
          description
            "A loopback which directs traffic received from an external
          source on the port back out the transmit side of the same
          port.";
        }
      }
      default 'NONE';
      description
        "Loopback modes for transponder logical channels";
    }

    identity FRAME_MAPPING_PROTOCOL {
      description
        "Base identity for frame mapping protocols that can be used
      when mapping Ethernet, OTN or other client signals to OTN
      logical channels.";
    }

    identity AMP {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Asynchronous Mapping Procedure";
    }

    identity GMP {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Generic Mapping Procedure";
    }

    identity BMP {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Bit-synchronous Mapping Procedure";
    }

    identity CBR {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Constant Bit Rate Mapping Procedure";
    }

    identity GFP_T {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Transparent Generic Framing Protocol";
    }

    identity GFP_F {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Framed-Mapped Generic Framing Protocol";
    }

    identity TRIBUTARY_SLOT_GRANULARITY {
      description
        "Base identity for tributary slot granularity for OTN
      logical channels.";
    }

    identity TRIB_SLOT_1.25G {
      base TRIBUTARY_SLOT_GRANULARITY;
      description
        "The tributary slot with a bandwidth of approximately 1.25 Gb/s
      as defined in ITU-T G.709 standard.";
    }

    identity TRIB_SLOT_2.5G {
      base TRIBUTARY_SLOT_GRANULARITY;
      description
        "The tributary slot with a bandwidth of approximately 2.5 Gb/s
      as defined in ITU-T G.709 standard.";
    }

    identity TRIB_SLOT_5G {
      base TRIBUTARY_SLOT_GRANULARITY;
      description
        "The tributary slot with a bandwidth of approximately 5 Gb/s
      as defined in ITU-T G.709 standard.";
    }

    grouping avg-min-max-instant-stats-precision2-ps-nm {
      description
        "Common grouping for recording picosecond per nanometer
      values with 2 decimal precision. Values include the
      instantaneous, average, minimum, and maximum statistics.
      Statistics are computed and reported based on a moving time
      interval (e.g., the last 30s).  If supported by the device,
      the time interval over which the statistics are computed, and
      the times at which the minimum and maximum values occurred,
      are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps-nm";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps-nm";
        description
          "The arithmetic mean value of the statistic over the
        time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps-nm";
        description
          "The minimum value of the statistic over the time interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps-nm";
        description
          "The maximum value of the statistic over the time interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision2-ps-nm

    grouping avg-min-max-instant-stats-precision2-ps {
      description
        "Common grouping for recording picosecond values with
      2 decimal precision. Values include the
      instantaneous, average, minimum, and maximum statistics.
      Statistics are computed and reported based on a moving time
      interval (e.g., the last 30s).  If supported by the device,
      the time interval over which the statistics are computed, and
      the times at which the minimum and maximum values occurred,
      are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps";
        description
          "The arithmetic mean value of the statistic over the
        time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps";
        description
          "The minimum value of the statistic over the time interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps";
        description
          "The maximum value of the statistic over the time interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision2-ps

    grouping avg-min-max-instant-stats-precision2-ps2 {
      description
        "Common grouping for recording picosecond^2 values with
      2 decimal precision. Values include the
      instantaneous, average, minimum, and maximum statistics.
      Statistics are computed and reported based on a moving time
      interval (e.g., the last 30s).  If supported by the device,
      the time interval over which the statistics are computed, and
      the times at which the minimum and maximum values occurred,
      are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps^2";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps^2";
        description
          "The arithmetic mean value of the statistic over the
        time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps^2";
        description
          "The minimum value of the statistic over the time interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps^2";
        description
          "The maximum value of the statistic over the time
        interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision2-ps2

    grouping avg-min-max-instant-stats-precision18-ber {
      description
        "Common grouping for recording bit error rate (BER) values
      with 18 decimal precision. Note that decimal64 supports
      values as small as i x 10^-18 where i is an integer. Values
      smaller than this should be reported as 0 to inidicate error
      free or near error free performance. Values include the
      instantaneous, average, minimum, and maximum statistics.
      Statistics are computed and reported based on a moving time
      interval (e.g., the last 30s).  If supported by the device,
      the time interval over which the statistics are computed, and
      the times at which the minimum and maximum values occurred,
      are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 18;
        }
        units "bit-errors-per-second";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 18;
        }
        units "bit-errors-per-second";
        description
          "The arithmetic mean value of the statistic over the
        time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 18;
        }
        units "bit-errors-per-second";
        description
          "The minimum value of the statistic over the time
        interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 18;
        }
        units "bit-errors-per-second";
        description
          "The maximum value of the statistic over the time
        interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision18-ber

    identity TRIBUTARY_PROTOCOL_TYPE {
      description
        "Base identity for protocol framing used by tributary
      signals.";
    }

    identity PROT_1GE {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "1G Ethernet protocol";
    }

    identity PROT_OC48 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OC48 protocol";
    }

    identity PROT_STM16 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "STM 16 protocol";
    }

    identity PROT_10GE_LAN {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "10G Ethernet LAN protocol";
    }

    identity PROT_10GE_WAN {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "10G Ethernet WAN protocol";
    }

    identity PROT_OC192 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "OC 192 (9.6GB) port protocol";
    }

    identity PROT_STM64 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "STM 64 protocol";
    }

    identity PROT_OTU2 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU 2 protocol";
    }

    identity PROT_OTU2E {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU 2e protocol";
    }

    identity PROT_OTU1E {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU 1e protocol";
    }

    identity PROT_ODU2 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU 2 protocol";
    }

    identity PROT_ODU2E {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU 2e protocol";
    }

    identity PROT_40GE {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "40G Ethernet port protocol";
    }

    identity PROT_OC768 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OC 768 protocol";
    }

    identity PROT_STM256 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "STM 256 protocol";
    }

    identity PROT_OTU3 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU 3 protocol";
    }

    identity PROT_ODU3 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU 3 protocol";
    }

    identity PROT_100GE {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "100G Ethernet protocol";
    }

    identity PROT_100G_MLG {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "100G MLG protocol";
    }

    identity PROT_OTU4 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "OTU4 signal protocol (112G) for transporting
    100GE signal";
    }

    identity PROT_OTUCN {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU Cn protocol";
    }

    identity PROT_ODUCN {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU Cn protocol";
    }

    identity PROT_ODU4 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU 4 protocol";
    }

    identity PROT_400GE {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "400G Ethernet protocol";
    }

    identity TRANSCEIVER_FORM_FACTOR_TYPE {
      description
        "Base identity for identifying the type of pluggable optic
      transceiver (i.e,. form factor) used in a port.";
    }

    identity CFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "C form-factor pluggable, that can support up to a
      100 Gb/s signal with 10x10G or 4x25G physical channels";
    }

    identity CFP2 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "1/2 C form-factor pluggable, that can support up to a
      200 Gb/s signal with 10x10G, 4x25G, or 8x25G physical
      channels";
    }

    identity CFP2_ACO {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "CFP2 analog coherent optics transceiver, supporting
      100 Gb, 200Gb, and 250 Gb/s signal.";
    }

    identity CFP4 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "1/4 C form-factor pluggable, that can support up to a
      100 Gb/s signal with 10x10G or 4x25G physical channels";
    }

    identity QSFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "OriginalQuad Small Form-factor Pluggable transceiver that can
      support 4x1G physical channels.  Not commonly used.";
    }

    identity QSFP_PLUS {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Quad Small Form-factor Pluggable transceiver that can support
      up to 4x10G physical channels.";
    }

    identity QSFP28 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "QSFP pluggable optic with support for up to 4x28G physical
      channels";
    }

    identity CPAK {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Cisco CPAK transceiver supporting 100 Gb/s.";
    }

    identity SFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Small form-factor pluggable transceiver supporting up to
      10 Gb/s signal";
    }

    identity SFP_PLUS {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Enhanced small form-factor pluggable transceiver supporting
      up to 16 Gb/s signals, including 10 GbE and OTU2";
    }

    identity XFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "10 Gigabit small form factor pluggable transceiver supporting
      10 GbE and OTU2";
    }

    identity X2 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "10 Gigabit small form factor pluggable transceiver supporting
      10 GbE using a XAUI inerface and 4 data channels.";
    }

    identity NON_PLUGGABLE {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Represents a port that does not require a pluggable optic,
      e.g., with on-board optics like COBO";
    }

    identity OTHER {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Represents a transceiver form factor not otherwise listed";
    }

    identity FIBER_CONNECTOR_TYPE {
      description
        "Type of optical fiber connector";
    }

    identity SC_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description "SC type fiber connector";
    }

    identity LC_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description "LC type fiber connector";
    }

    identity MPO_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description
        "MPO (multi-fiber push-on/pull-off) type fiber connector
      1x12 fibers";
    }

    identity AOC_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description
        "AOC (active optical cable) type fiber connector";
    }

    identity DAC_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description
        "DAC (direct attach copper) type fiber connector";
    }

    identity ETHERNET_PMD_TYPE {
      description
        "Ethernet compliance codes (PMD) supported by transceivers";
    }

    identity ETH_10GBASE_LRM {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_LRM";
    }

    identity ETH_10GBASE_LR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_LR";
    }

    identity ETH_10GBASE_ZR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_ZR";
    }

    identity ETH_10GBASE_ER {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_ER";
    }

    identity ETH_10GBASE_SR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_SR";
    }

    identity ETH_40GBASE_CR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_CR4";
    }

    identity ETH_40GBASE_SR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_SR4";
    }

    identity ETH_40GBASE_LR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_LR4";
    }

    identity ETH_40GBASE_ER4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_ER4";
    }

    identity ETH_40GBASE_PSM4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_PSM4";
    }

    identity ETH_4X10GBASE_LR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 4x10GBASE_LR";
    }

    identity ETH_4X10GBASE_SR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 4x10GBASE_SR";
    }

    identity ETH_100G_AOC {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100G_AOC";
    }

    identity ETH_100G_ACC {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100G_ACC";
    }

    identity ETH_100GBASE_SR10 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_SR10";
    }

    identity ETH_100GBASE_SR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_SR4";
    }

    identity ETH_100GBASE_LR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_LR4";
    }

    identity ETH_100GBASE_ER4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_ER4";
    }

    identity ETH_100GBASE_CWDM4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_CWDM4";
    }

    identity ETH_100GBASE_CLR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_CLR4";
    }

    identity ETH_100GBASE_PSM4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_PSM4";
    }

    identity ETH_100GBASE_CR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_CR4";
    }

    identity ETH_UNDEFINED {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: undefined";
    }

    identity SONET_APPLICATION_CODE {
      description
        "Supported SONET/SDH application codes";
    }

    identity VSR2000_3R2 {
      base SONET_APPLICATION_CODE;
      description
        "SONET/SDH application code: VSR2000_3R2";
    }

    identity VSR2000_3R3 {
      base SONET_APPLICATION_CODE;
      description
        "SONET/SDH application code: VSR2000_3R3";
    }

    identity VSR2000_3R5 {
      base SONET_APPLICATION_CODE;
      description
        "SONET/SDH application code: VSR2000_3R5";
    }

    identity SONET_UNDEFINED {
      base SONET_APPLICATION_CODE;
      description
        "SONET/SDH application code: undefined";
    }

    identity OTN_APPLICATION_CODE {
      description
        "Supported OTN application codes";
    }

    identity P1L1_2D1 {
      base OTN_APPLICATION_CODE;
      description
        "OTN application code: P1L1_2D1";
    }

    identity P1S1_2D2 {
      base OTN_APPLICATION_CODE;
      description
        "OTN application code: P1S1_2D2";
    }

    identity P1L1_2D2 {
      base OTN_APPLICATION_CODE;
      description
        "OTN application code: P1L1_2D2";
    }

    identity OTN_UNDEFINED {
      base OTN_APPLICATION_CODE;
      description
        "OTN application code: undefined";
    }

    identity TRIBUTARY_RATE_CLASS_TYPE {
      description
        "Rate of tributary signal _- identities will typically reflect
      rounded bit rate.";
    }

    identity TRIB_RATE_1G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description "1G tributary signal rate";
    }

    identity TRIB_RATE_2.5G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2.5G tributary signal rate";
    }

    identity TRIB_RATE_10G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "10G tributary signal rate";
    }

    identity TRIB_RATE_40G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "40G tributary signal rate";
    }

    identity TRIB_RATE_100G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "100G tributary signal rate";
    }

    identity TRIB_RATE_150G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "150G tributary signal rate";
    }

    identity TRIB_RATE_200G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "200G tributary signal rate";
    }

    identity TRIB_RATE_250G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "250G tributary signal rate";
    }

    identity TRIB_RATE_300G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "300G tributary signal rate";
    }

    identity TRIB_RATE_350G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "350G tributary signal rate";
    }

    identity TRIB_RATE_400G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "400G tributary signal rate";
    }

    identity TRIB_RATE_450G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "450G tributary signal rate";
    }

    identity TRIB_RATE_500G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "500G tributary signal rate";
    }

    identity TRIB_RATE_550G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "550G tributary signal rate";
    }

    identity TRIB_RATE_600G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "600G tributary signal rate";
    }

    identity TRIB_RATE_650G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "650G tributary signal rate";
    }

    identity TRIB_RATE_700G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "700G tributary signal rate";
    }

    identity TRIB_RATE_750G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "750G tributary signal rate";
    }

    identity TRIB_RATE_800G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "800G tributary signal rate";
    }

    identity TRIB_RATE_850G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "850G tributary signal rate";
    }

    identity TRIB_RATE_900G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "900G tributary signal rate";
    }

    identity TRIB_RATE_950G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "950G tributary signal rate";
    }

    identity TRIB_RATE_1000G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1000G tributary signal rate";
    }

    identity TRIB_RATE_1050G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1050G tributary signal rate";
    }

    identity TRIB_RATE_1100G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1100G tributary signal rate";
    }

    identity TRIB_RATE_1150G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1150G tributary signal rate";
    }

    identity TRIB_RATE_1200G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1200G tributary signal rate";
    }

    identity TRIB_RATE_1250G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1250G tributary signal rate";
    }

    identity TRIB_RATE_1300G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1300G tributary signal rate";
    }

    identity TRIB_RATE_1350G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1350G tributary signal rate";
    }

    identity TRIB_RATE_1400G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1400G tributary signal rate";
    }

    identity TRIB_RATE_1450G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1450G tributary signal rate";
    }

    identity TRIB_RATE_1500G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1500G tributary signal rate";
    }

    identity TRIB_RATE_1550G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1550G tributary signal rate";
    }

    identity TRIB_RATE_1600G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1600G tributary signal rate";
    }

    identity LOGICAL_ELEMENT_PROTOCOL_TYPE {
      description
        "Type of protocol framing used on the logical channel or
      tributary";
    }

    identity PROT_ETHERNET {
      base LOGICAL_ELEMENT_PROTOCOL_TYPE;
      description
        "Ethernet protocol framing";
    }

    identity PROT_OTN {
      base LOGICAL_ELEMENT_PROTOCOL_TYPE;
      description "OTN protocol framing";
    }

    identity OPTICAL_CHANNEL {
      base oc-platform-types:OPENCONFIG_HARDWARE_COMPONENT;
      description
        "Optical channels act as carriers for transport traffic
      directed over a line system.  They are represented as
      physical components in the physical inventory model.";
    }

    identity FIBER_JUMPER_TYPE {
      description
        "Types of fiber jumpers used for connecting device ports";
    }

    identity FIBER_JUMPER_SIMPLEX {
      base FIBER_JUMPER_TYPE;
      description "Simplex fiber jumper";
    }

    identity FIBER_JUMPER_MULTI_FIBER_STRAND {
      base FIBER_JUMPER_TYPE;
      description
        "One strand of a fiber jumper which contains multiple fibers
      within it, such as an MPO based fiber jumper";
    }

    identity OPTICAL_PORT_TYPE {
      description
        "Type definition for optical transport port types";
    }

    identity INGRESS {
      base OPTICAL_PORT_TYPE;
      description
        "Ingress port, corresponding to a signal entering
      a line system device such as an amplifier or wavelength
      router.";
    }

    identity EGRESS {
      base OPTICAL_PORT_TYPE;
      description
        "Egress port, corresponding to a signal exiting
      a line system device such as an amplifier or wavelength
      router.";
    }

    identity ADD {
      base OPTICAL_PORT_TYPE;
      description
        "Add port, corresponding to a signal injected
      at a wavelength router.";
    }

    identity DROP {
      base OPTICAL_PORT_TYPE;
      description
        "Drop port, corresponding to a signal dropped
      at a wavelength router.";
    }

    identity MONITOR {
      base OPTICAL_PORT_TYPE;
      description
        "Monitor port, corresponding to a signal used by an optical
      channel monitor. This is used to represent the connection
      that a channel monitor port is connected to, typically on a
      line system device. This  connection may be via physical cable
      and faceplate ports or internal to the device";
    }

    identity TERMINAL_CLIENT {
      base OPTICAL_PORT_TYPE;
      description
        "Client-facing port on a terminal optics device (e.g.,
      transponder or muxponder).";
    }

    identity TERMINAL_LINE {
      base OPTICAL_PORT_TYPE;
      description
        "Line-facing port on a terminal optics device (e.g.,
      transponder or muxponder).";
    }
  }  // module openconfig-transport-types