Viewing SFP Information
  • 09 Aug 2024
  • 5 Minutes to read
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Viewing SFP Information

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Article summary

Use this page to view both summary and detailed information about all currently-detected SFPs.

To view a configuration summary of all SFPs

  1. Access the page Port ▶SFP ▶Configuration.
    A listing all SFPs currently detected by the unit is displayed, along with their status and speed.

To view detailed configuration information for a specific SFP

  1. Access the page Port ▶SFP ▶Configuration.
    A listing all SFPs currently detected by the unit is displayed, along with their status and speed.

  2. In the Connector column of the table, click the SFP for which you want to view detailed information.

For more information on specific parameters, refer to the following tables.

SFP Information (Port ▶SFP ▶Configuration)

ParameterDescription
PresentAn indication of whether or not the SFP is present. Available options are:
  • Green: The SFP is present
  • Red: The SFP is not present
ConnectorThe physical connector the port is using.
Part NumberThe manufacturer’s part number or product name.
Serial NumberThe manufacturer’s serial number for the transceiver.
WavelengthThe nominal transmitter wavelength at room temperature, expressed in nanometers.
SpeedThe speed supported by the SFP, such as 1 Gbps or 10 Gbps.

To view a status summary of all SFPs

  1. Access the page Port ▶SFP ▶Status.
    Summary information for all SFPs currently detected by the unit is displayed.

For more information on specific parameters, refer to the following tables.

To view detailed status information for a specific SFP

  1. Access the page Port ▶SFP ▶Status.
    Summary information for all SFPs currently detected by the unit is displayed.

  2. In the Connector column of the table, click the SFP for which you want to view detailed information.
    The details pertaining to the selected SFP are displayed. The level of detail provided may vary, depending on the SFP's state.

For more information on specific parameters, refer to the following tables.

SFP Status Information (Port ▶SFP ▶Status ▶[connector])
SFP or Fiber Information

ParameterDescription
Connector TypeThe external cable connector provided as the media interface.
VendorThe manufacturer name.

This is a 16-character field that contains ASCII characters, padded on the right with ASCII spaces (20h).

Wave LengthIndicates the nominal transmitter wavelength at room temperature, expressed in nanometers.
Part NumberThe manufacturer part number or product name.

This is a 16-byte field that contains ASCII characters, padded on the right with ASCII spaces (20h).

Serial NumberThe manufacturer serial number for the transceiver.

This is a 16-character field that contains ASCII characters, padded on the right with ASCII spaces (20h).

RevisionThe manufacturer’s product revision This is a 16-character field that contains ASCII characters, padded on the right with ASCII spaces (20h).
SFP PresentIndicates the presence of a recognized SFP.
DiagnosticsSupported or unsupported .

A value of supported indicates that diagnostic information is provided in the SFP memory section.

Calibration
  • Internal: The values are calibrated to absolute measurements, which should be interpreted according to the “Internal Calibration” convention.
  • External: The values are A/D counts, which are converted into real units according to the “External Calibration” convention.
ThresholdsIndicates whether alarm and warning thresholds are supported.
SpeedThe speed supported by the SFP, such as 1 Gbps . Two values are displayed:
  • Actual: The speed at which this SFP is currently operating
  • Detected: The speed, as obtained by SFP detection

Monitoring Information

ParameterDescription
TemperatureTransceiver temperature, measured internally.

Temperature accuracy is manufacturer-specific, but must be higher than 3 degrees Celsius for the specified operating temperature and voltage.

Laser Bias CurrentCoupled TX output power, measured internally.

Accuracy is manufacturer-specific but must be better than 3 dB for the specified operating temperature and voltage.

Data is assumed to be based on measurement of a laser monitor photodiode current. Data is not valid when the transmitter is disabled.

Transmit PowerCoupled TX output power, measured internally.

Accuracy is manufacturer-specific but must be better than 3 dB for the specified operating temperature and voltage. Data is assumed to be based on measurement of a laser monitor photodiode current. Data is not valid when the transmitter is disabled.

Receive PowerReceived optical power, measured internally.

Accuracy depends on the exact optical wavelength. For the manufacturer’s specified wavelength, accuracy should be better than 3 dB for the specified temperature and voltage.

This accuracy should be maintained for input power levels up to the lesser of maximum transmitted or maximum received optical power per the appropriate standard. It should be maintained down to the minimum transmitted power minus cable plant loss (insertion loss or passive loss) per the appropriate standard. Accuracy beyond this minimum required received input optical power range is manufacturer specific.

Supply VoltageTransceiver supply voltage, measured internally.

Note: Transmitter supply voltage and receiver supply voltage are isolated in some transceivers. In that case, only one supply is monitored. Refer to the device specifications for details.

SFP Thresholds

ParameterDescription
TemperatureHigh Alarm: High-temperature alarm for the transceiver

Low Alarm: Low-temperature alarm for the transceiver

High Warning: High-temperature warning for the transceiver

Low Warning: Low-temperature warning for the transceiver

VccHigh Alarm: High-supply voltage alarm for the transceiver

Low Alarm: Low-supply voltage alarm for the transceiver

High Warning: High-supply voltage warning for the transceiver

Low Warning: Low-supply voltage warning for the transceiver

Laser Bias CurrentHigh Alarm: High-laser bias current alarm for the TX, expressed in microamperes

Low Alarm: Low-laser bias current alarm for the TX, expressed in microamperes

High Warning: High-laser bias current warning for the TX, expressed in microamperes

Low Warning: Low-laser bias current warning for the TX, expressed in microamperes

Tx PowerHigh Alarm: High-output power alarm for the TX (~ -40 dBm to +8.2 dBm)

Low Alarm: Low-output power alarm for the TX (~ -40 dBm to +8.2 dBm)

High Warning: High-output power warning for the TX (~ -40 dBm to +8.2 dBm)

Low Warning: Low-output power warning for the TX (~ -40 dBm to +8.2 dBm)

Rx PowerHigh Alarm: High-input power alarm for the RX (~ -40 dBm to +8.2 dBm)

Low Alarm: Low-input power alarm for the RX (~ -40 dBm to +8.2 dBm)

High Warning: High-input power warning for the RX (~ -40 dBm to +8.2 dBm)

Low Warning: Low-input power warning for the RX (~ -40 dBm to +8.2 dBm)

SFP Memory Information

  • SFP Memory (Location: A0h)
    The SFP memory field provides a hexadecimal dump of the digital diagnostic memory map at address A0h. Refer to SFF-8472 for detailed descriptions of the individual data fields.
  • Monitor Memory (Location: A2h)
    The Monitor memory field provides a hexadecimal dump of the digital diagnostic memory map at address A2h. Refer to SFF-8472 for detailed descriptions of the individual data fields.
  • Copper PHY Config Memory (Location: ACh or A2h)
    The Copper PHY config memory field provides a hexadecimal dump of the PHY memory map at address ACh. Refer to the copper SFP vendor's specification for detailed descriptions of the individual data fields.

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