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show interfaces diagnostics optics

date_range 17-Sep-24

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Syntax

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show interfaces diagnostics optics interface-name

Description

Display diagnostics data and alarms for Gigabit Ethernet optical transceivers (SFP, SFP+, XFP, QSFP+, or CFP) installed in EX Series Switches or QFX Series Switches. The information provided by this command is known as digital optical monitoring (DOM) information.

Thresholds that trigger a high alarm, low alarm, high warning, or low warning are set by the transponder vendors. Generally, a high alarm or low alarm indicates that the optics module is not operating properly. This information can be used to diagnose why a transceiver is not working.

Options

interface-name

Name of the interface associated with the port in which the transceiver is installed: ge-fpc/pic/port, xe-fpc/pic/port, or et-fpc/pic/port.

Required Privilege Level

View

Output Fields

Table 1 lists the output fields for the show interfaces diagnostics optics command. Output fields are listed in the approximate order in which they appear.

Transceivers generate monitoring data such as power supply voltage, transceiver temperature, TEC current, receive optical power, laser output power, laser temperature, and laser bias current by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits.

Warning flags associated with power supply voltage, transceiver temperature, TEC current, receive optical power, laser output power, laser temperature, and laser bias current indicate conditions outside the normal limits; however, that need not cause immediate link failures.

Alarm flags associated with power supply voltage, transceiver temperature, TEC current, receive optical power, laser output power, laser temperature, and laser bias current indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.

Table 1: show interfaces diagnostics optics Output Fields
Field Name	Field Description
`Physical interface`	Displays the name of the physical interface.
`Lane ’x’`	Displays an individual Tx/Rx data transmission channel “x” associated with the given physical interface device.
`Laser bias current`	Displays the magnitude of the laser bias power setting current, in milliamperes. The laser bias provides direct modulation of laser diodes and modulates currents.
`Laser output power` (Availability is dependent on SFP vendor)	Displays the laser output power, in milliwatts (mW) and decibels referred to 1.0 mW (dBm).
`Laser temperature` (Availability is dependent on SFP vendor)	Displays the laser temperature, in Celsius and Fahrenheit.
`Module temperature`	Displays the temperature, in Celsius and Fahrenheit.
`Module voltage` (Availability is dependent on SFP vendor)	Displays the voltage in Volts.
`Laser rx power` (Availability is dependent on SFP vendor)	Displays the laser received optical power, in milliwatts (mW) and decibels referred to 1.0 mW (dBm).
`Receiver signal average optical power` (Availability is dependent on SFP vendor)	Displays the receiver signal average optical power, in milliwatts (mW) and decibels referred to 1.0 mW (dBm).
`Laser bias current high alarm`	Displays whether the laser bias power setting high alarm is `On` or `Off`. Transceivers generate monitoring data such as laser bias current by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser bias current indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser bias current low alarm`	Displays whether the laser bias power setting low alarm is `On` or `Off`. Transceivers generate monitoring data such as laser bias current by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser bias current indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser bias current high warning`	Displays whether the laser bias power setting high warning is `On` or `Off`. Transceivers generate monitoring data such as laser bias current by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser bias current indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser bias current low warning`	Displays whether the laser bias power setting low warning is `On` or `Off`. Transceivers generate monitoring data such as laser bias current by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser bias current indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser output power high alarm` (Availability is dependent on SFP vendor)	Displays whether the laser output power high alarm is `On` or `Off`. Transceivers generate monitoring data such as laser output power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser output power indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser output power low alarm` (Availability is dependent on SFP vendor)	Displays whether the laser output power low alarm is `On` or `Off`. Transceivers generate monitoring data such as laser output power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser output power indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser output power high warning` (Availability is dependent on SFP vendor)	Displays whether the laser output power high warning is `On` or `Off`. Transceivers generate monitoring data such as laser output power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser output power indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser output power low warning` (Availability is dependent on SFP vendor)	Displays whether the laser output power low warning is `On` or `Off`. Transceivers generate monitoring data such as laser output power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser output power indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser temperature high alarm` (Availability is dependent on SFP vendor)	Displays whether the laser temperature high alarm is `On` or `Off`. Transceivers generate monitoring data such as laser temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser temperature indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser temperature low alarm` (Availability is dependent on SFP vendor)	Displays whether the laser temperature low alarm is `On` or `Off`. Transceivers generate monitoring data such as laser temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser temperature indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser temperature high warning` (Availability is dependent on SFP vendor)	Displays whether the laser temperature high warning is `On` or `Off`. Transceivers generate monitoring data such as laser temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser temperature indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser temperature low warning` (Availability is dependent on SFP vendor)	Displays whether the laser temperature low warning is `On` or `Off`. Transceivers generate monitoring data such as laser temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser temperature indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Module temperature high alarm` (Availability is dependent on SFP vendor)	Displays whether the module temperature high alarm is `On` or `Off`. Transceivers generate monitoring data such as transceiver temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with transceiver temperature indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Module temperature low alarm` (Availability is dependent on SFP vendor)	Displays whether the module temperature low alarm is `On` or `Off`. Transceivers generate monitoring data such as transceiver temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with transceiver temperature indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Module temperature high warning` (Availability is dependent on SFP vendor)	Displays whether the module temperature high warning is `On` or `Off`. Transceivers generate monitoring data such as transceiver temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with transceiver temperature indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Module temperature low warning` (Availability is dependent on SFP vendor)	Displays whether the module temperature low warning is `On` or `Off`. Transceivers generate monitoring data such as transceiver temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with transceiver temperature indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Module voltage high alarm` (Availability is dependent on SFP vendor)	Displays whether the module voltage high alarm is `On` or `Off`. Transceivers generate monitoring data such as power supply voltage by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with power supply voltage indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Module voltage low alarm` (Availability is dependent on SFP vendor)	Displays whether the module voltage low alarm is `On` or `Off`. Transceivers generate monitoring data such as power supply voltage by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with power supply voltage indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Module voltage high warning` (Availability is dependent on SFP vendor)	Displays whether the module voltage high warning is `On` or `Off`. Transceivers generate monitoring data such as power supply voltage by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with power supply voltage indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Module voltage low warning` (Availability is dependent on SFP vendor)	Displays whether the module voltage low warning is `On` or `Off`. Transceivers generate monitoring data such as power supply voltage by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with power supply voltage indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser rx power high alarm` (Availability is dependent on SFP vendor)	Displays whether the receive laser power high alarm is `On` or `Off`. Transceivers generate monitoring data such as receive optical power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with receive optical power indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser rx power low alarm` (Availability is dependent on SFP vendor)	Displays whether the receive laser power low alarm is `On` or `Off`. Transceivers generate monitoring data such as receive optical power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with receive optical power indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser rx power high warning` (Availability is dependent on SFP vendor)	Displays whether the receive laser power high warning is `On` or `Off`. Transceivers generate monitoring data such as receive optical power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with receive optical power indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser rx power low warning` (Availability is dependent on SFP vendor)	Displays whether the receive laser power low warning is `On` or `Off`. Transceivers generate monitoring data such as receive optical power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with receive optical power indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser bias current high alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser bias current high alarm. Transceivers generate monitoring data such as laser bias current by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser bias current indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Module not ready alarm` (Availability is dependent on SFP vendor)	Displays whether the module not ready alarm is `On` or `Off`. When the output is `On`, the module has an operational fault.
`Module low power alarm` (Availability is dependent on SFP vendor)	Displays whether the module low power alarm is `On` or `Off`. The host might use the module power mode to limit module power consumption to one of two thresholds—low power mode or high power mode. When operating in low power mode, the maximum power consumption of the module will remain below a defined maximum. Active module functionality is limited to host-to-module interactions over the management interface. Passive copper cable assemblies might operate in low power mode at all times and are fully functional.
`Module initialization incomplete alarm` (Availability is dependent on SFP vendor)	Displays whether the module initialization incomplete alarm is `On` or `Off`. This alarm is generated when the transceiver module initialization is not complete.
`Module fault alarm` (Availability is dependent on SFP vendor)	Displays whether the module fault alarm is `On` or `Off`. This alarm is generated when the transceiver module detects a condition (such as TEC runaway or flash corruption) that could cause damage to the module. This alarm is provided as a notification to the host that a module fault has occurred. The implementation of the module fault is form factor dependent.
`PLD Flash initialization fault alarm` (Availability is dependent on SFP vendor)	Displays whether the PLD Flash initialization fault alarm is `On` or `Off`. This alarm is generated if the initialization of transceiver module internal programmable logic device (PLD) or flash device fails.
`Power supply fault alarm` (Availability is dependent on SFP vendor)	Displays whether the power supply fault alarm is `On` or `Off`. This alarm is generated if the power supply is out of range.
`Checksum fault alarm` (Availability is dependent on SFP vendor)	Displays whether the checksum fault alarm is `On` or `Off`. To protect against degradation in the non-volatile storage and potential errors in transfer, the module management interface defines a few registers to let module manufacturers save checksums or check codes. Each checksum or check code is assigned for a small-sized datum derived from a block of digital data. The algorithms of calculation for checksums or check codes are defined by management interface specifications of form factors. For example, the checksum or check code shall be the low order 8 bits of the sum of the contents of that small-sized datum. Prior to using the stored information, module users calculate the checksums or check codes again using the same algorithm. If the results are different from those saved in checksum bytes by module manufacturers, checksum fault alarm is triggered. A Checksum fault means that the content of the small-sized datum covered by this checksum is corrupted or changed.
`Tx laser disabled alarm` (Availability is dependent on SFP vendor)	Displays whether the Tx laser disabled alarm is `On` or `Off`. This alarm is generated when the transmitter optical output is shut down.
`Module power down alarm` (Availability is dependent on SFP vendor)	Displays whether the module power down alarm is `On` or `Off`. When the output is `On`, module is in a limited power mode, low for normal operation.
`Tx data not ready alarm` (Availability is dependent on SFP vendor)	Any condition leading to invalid data on the transmit path. Displays whether the Tx data not ready alarm is `On` or `Off`.
`Tx not ready alarm` (Availability is dependent on SFP vendor)	Any condition leading to invalid data on the transmit path. Displays whether the Tx not ready alarm is `On` or `Off`.
`Tx laser fault alarm` (Availability is dependent on SFP vendor)	Laser fault condition. Displays whether the Tx laser fault alarm is `On` or `Off`. This alarm is generated when the transmitter/laser is operating in an abnormal state.
`Tx CDR loss of lock alarm` (Availability is dependent on SFP vendor)	Transmit clock and data recovery (CDR) loss of lock. Loss of lock on the transmit side of the CDR. Displays whether the Tx CDR loss of lock alarm is `On` or `Off`. Some transceivers have Clock and Data Recovery (CDR) circuits at the transmit side. The CDR has its own oscillator and uses a phase locked loop (PLL) to calibrate the oscillator and match it to the phase and frequency of the incoming signal. The feedback circuit of PLL eventually locks the local oscillator on to the phase and frequency of the incoming signal. The PLL maintains that lock by continuously monitoring the received signal. If the lock cannot be maintained, the Loss of Lock (LOL) alarm is generated.
`Rx not ready alarm` (Availability is dependent on SFP vendor)	Any condition leading to invalid data on the receive path. Displays whether the Rx not ready alarm is `On` or `Off`.
`Rx loss of signal alarm`	Receive loss of signal alarm. When the output is `On`, indicates insufficient optical input power to the module. Displays whether the Rx loss of signal alarm is `On` or `Off`.
`Rx CDR loss of lock alarm` (Availability is dependent on SFP vendor)	Receive CDR loss of lock. Loss of lock on the receive side of the CDR. Displays whether the Rx CDR loss of lock alarm is `On` or `Off`. Some transceivers have Clock and Data Recovery (CDR) circuits at the receive side. The CDR has its own oscillator and uses a phase locked loop (PLL) to calibrate the oscillator and match it to the phase and frequency of the incoming signal. The feedback circuit of PLL eventually locks the local oscillator on to the phase and frequency of the incoming signal. The PLL maintains that lock by continuously monitoring the received signal. If the lock cannot be maintained, the Loss of Lock (LOL) alarm is generated.
`Laser bias current low alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser bias current low alarm. Transceivers generate monitoring data such as laser bias current by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser bias current indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser bias current high warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser bias current high warning. Transceivers generate monitoring data such as laser bias current by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser bias current indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser bias current low warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser bias current low warning. Transceivers generate monitoring data such as laser bias current by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser bias current indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser output power high alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser output power high alarm. Transceivers generate monitoring data such as laser output power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser output power indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser output power low alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser output power low alarm. Transceivers generate monitoring data such as laser output power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser output power indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser output power high warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser output power high warning. Transceivers generate monitoring data such as laser output power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser output power indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser output power low warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser output power low warning. Transceivers generate monitoring data such as laser output power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser output power indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Module temperature high alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the module temperature high alarm. Transceivers generate monitoring data such as laser temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser temperature indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Module temperature low alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the module temperature low alarm. Transceivers generate monitoring data such as laser temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with laser temperature indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Module temperature high warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the module temperature high warning. Transceivers generate monitoring data such as laser temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser temperature indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Module temperature low warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the module temperature low warning. Transceivers generate monitoring data such as laser temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with laser temperature indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Module voltage high alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the module voltage high alarm. Transceivers generate monitoring data such as power supply voltage by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with power supply voltage indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Module voltage low alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the module voltage low alarm. Transceivers generate monitoring data such as power supply voltage by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with power supply voltage indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Module voltage high warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the module voltage high warning. Transceivers generate monitoring data such as power supply voltage by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with power supply voltage indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Module voltage low warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the module voltage low warning. Transceivers generate monitoring data such as power supply voltage by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with power supply voltage indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser rx power high alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser Rx power high alarm. Transceivers generate monitoring data such as receive optical power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with receive optical power indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser rx power low alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser Rx power low alarm. Transceivers generate monitoring data such as receive optical power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with receive optical power indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser rx power high warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser Rx power high warning. Transceivers generate monitoring data such as receive optical power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with receive optical power indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser rx power low warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser Rx power low warning. Transceivers generate monitoring data such as receive optical power by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with receive optical power indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser temperature high alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser temperature high alarm, in Celsius and Fahrenheit. Transceivers generate monitoring data such as transceiver temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with transceiver temperature indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser temperature low alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser temperature low alarm, in Celsius and Fahrenheit. Transceivers generate monitoring data such as transceiver temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Alarm flags associated with transceiver temperature indicate conditions likely, but not necessarily, to be associated with an operational failure of the transceiver and cause for immediate action.
`Laser temperature high warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser temperature high warning, in Celsius and Fahrenheit. Transceivers generate monitoring data such as transceiver temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with transceiver temperature indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`Laser temperature low warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for the laser temperature low warning, in Celsius and Fahrenheit. Transceivers generate monitoring data such as transceiver temperature by digitization of internal analog signals. Each supported analog to digital conversion value has a high alarm, low alarm, high warning, and low warning threshold. These values are configured by the transceiver manufacturer and allow the user to determine when a value is outside the normal limits. Warning flags associated with transceiver temperature indicate conditions outside the normal limits; however, that need not cause immediate link failures.
`SOA bias current high alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for SOA bias current high alarm.
`SOA bias current low alarm threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for SOA bias current low alarm.
`SOA bias current high warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for SOA bias current high warning.
`SOA bias current low warning threshold` (Availability is dependent on SFP vendor)	Displays the vendor-specified threshold for SOA bias current low warning.
`Laser receiver power high alarm` (Availability is dependent on SFP vendor)	Displays whether the laser receiver power high alarm is `On` or `Off`. This alarm is triggered when the receive optical power is higher than the high alarm threshold.
`Laser receiver power low alarm` (Availability is dependent on SFP vendor)	Displays whether the laser receiver power low alarm is `On` or `Off`. This alarm is triggered when the receive optical power is lower than the high alarm threshold.
`Laser receiver power high warning` (Availability is dependent on SFP vendor)	Displays whether the laser receiver power high warning is `On` or `Off`. This warning is triggered when the receive optical power is higher than the high warning threshold.
`Laser receiver power low warning` (Availability is dependent on SFP vendor)	Displays whether the laser receiver power low warning is `On` or `Off`. This warning is triggered when the receive optical power is lower than the high warning threshold.
`Laser receiver power` (Availability is dependent on SFP vendor)	Displays the laser receiver power, in milliwatts (mW) and decibels referred to 1.0 mW (dBm).
`Tx loss of signal functionality alarm` (Availability is dependent on SFP vendor)	Displays whether the Tx loss of signal functionality alarm is `On` or `Off`. This alarm is generated if the high-speed electrical signal amplitude of Tx input is below a threshold.
`APD supply fault alarm` (Availability is dependent on SFP vendor)	Displays whether the APD supply fault alarm is `On` or `Off`. Some transceivers have Avalanche Photodiode (APD) receiver to improve receiver sensitivity. APD requires a bias voltage. If there is a disruption in the bias voltage supply, the APD supply fault alarm is generated.
`TEC fault alarm` (Availability is dependent on SFP vendor)	Displays whether the TEC fault alarm is `On` or `Off`. Some transceivers have an internal temperature controller—Thermoelectric Cooler (TEC). If the TEC is faulty, the TEC fault alarm is generated.
`Wavelength unlocked alarm` (Availability is dependent on SFP vendor)	Displays whether the Wavelength unlocked alarm is `On` or `Off`. The transmitter wavelengths of some transceivers must be maintained at greater accuracy over operational lifetimes. Wavelength locker is used to stabilize the wavelength of the laser diode. If the wavelength is out of the specified range, the wavelength unlocked alarm is generated.

Sample Output