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 "2021-07-29" {
      description
        "Add several avg-min-max-instant-stats groupings";
      reference
        "0.15.0";

    }

    revision "2021-03-22" {
      description
        "Add client mapping mode identityref.";
      reference
        "0.14.0";

    }

    revision "2021-02-26" {
      description
        "Additional PMD types, form factors, and protocol types.";
      reference
        "0.13.0";

    }

    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 "0.15.0";
    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.";
    }

    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 PROT_OTSIG {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "Optical tributary signal group protocol";
    }

    identity PROT_ODUFLEX_CBR {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "ODU Flex with CBR protocol";
    }

    identity PROT_ODUFLEX_GFP {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "ODU Flex with GFP 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 QSFP56_DD_TYPE1 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "QSFP DD pluggable optic with support for up to 8x56G physical
channels. Type 1 uses eight optical and electrical signals.";
    }

    identity QSFP56_DD_TYPE2 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "QSFP DD pluggable optic with support for up to 4x112G physical
channels. Type 2 uses four optical and eight electrical
signals.";
    }

    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 OSFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Octal small form factor pluggable transceiver supporting
400 Gb/s.";
    }

    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_100GBASE_FR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_FR";
    }

    identity ETH_400GBASE_ZR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_ZR";
    }

    identity ETH_400GBASE_LR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_LR4";
    }

    identity ETH_400GBASE_FR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_FR4";
    }

    identity ETH_400GBASE_LR8 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_LR8";
    }

    identity ETH_400GBASE_DR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_DR4";
    }

    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).";
    }

    identity CLIENT_MAPPING_MODE {
      description
        "Type definition for optical transport client mapping modes.";
    }

    identity MODE_1X100G {
      base CLIENT_MAPPING_MODE;
      description
        "1 x 100G client mapping mode.";
    }

    identity MODE_1X200G {
      base CLIENT_MAPPING_MODE;
      description
        "1 x 200G client mapping mode.";
    }

    identity MODE_1X400G {
      base CLIENT_MAPPING_MODE;
      description
        "1 x 400G client mapping mode.";
    }

    identity MODE_2X100G {
      base CLIENT_MAPPING_MODE;
      description
        "2 x 100G client mapping mode.";
    }

    identity MODE_2X200G {
      base CLIENT_MAPPING_MODE;
      description
        "2 x 200G client mapping mode.";
    }

    identity MODE_3X100G {
      base CLIENT_MAPPING_MODE;
      description
        "3 x 100G client mapping mode.";
    }

    identity MODE_4X100G {
      base CLIENT_MAPPING_MODE;
      description
        "4 x 100G client mapping mode.";
    }

    identity TRANSCEIVER_MODULE_FUNCTIONAL_TYPE {
      description
        "Type definition for transceiver module functional types.";
    }

    identity TYPE_STANDARD_OPTIC {
      base TRANSCEIVER_MODULE_FUNCTIONAL_TYPE;
      description
        "Standard optic using a grey wavelength (i.e. 1310, 1550, etc.)
and on-off-keying (OOK) modulation.";
    }

    identity TYPE_DIGITAL_COHERENT_OPTIC {
      base TRANSCEIVER_MODULE_FUNCTIONAL_TYPE;
      description
        "Digital coherent module which transmits a phase / amplitude
modulated signal and uses a digital signal processor to receive
and decode the received signal.";
    }
  }  // module openconfig-transport-types