Huawei / SFP / SFP+ Optical Transceivers

Huawei 100G QSFP28 10km Equipment information & support

The Huawei 100G QSFP28 1310nm 10km is an enterprise-grade hot-pluggable optical transceiver engineered for high-density 100G Ethernet links over single-mode fiber (SMF) up to 10 kilometers with duplex LC connectors.

Equipment information

Brand: Huawei
Equipment model: Huawei 100G QSFP28 10km
Equipment type: SFP / SFP+ Optical Transceivers
Controller / software version: Confirm against the installed equipment

View full product specifications

Huawei 100G QSFP28 10km Official Product View 4

Information below comes from the current product catalogue. Confirm the controller, software version and configuration of the installed equipment separately.

Form Factor: QSFP+/QSFP28 Hot-Pluggable Cage
Data Rate: 100 Gbps
Central Wavelength: 1310 (LAN-WDM 4 channels: 1295.56, 1300.05, 1304.58, 1309.14) nm
Maximum Distance: 10 km
Fiber Type: Single-Mode Fiber (SMF) (SMF)
Optical Connector: Duplex LC Connector (Duplex LC)

Alarms & troubleshooting

RX_LOS (Optical RX Loss of Signal)

Port LINK/ACT LED Off, Faceplate ALM LED solid Red

Fiber link disconnected, remote transmitter failure, dirty or damaged LC connector, or optical RX power lower than sensitivity threshold (-10.6 dBm/lane)

1. Execute 'display optical-module brief' to check 4-channel RX optical power. 2. Use an optical power meter to verify incoming power is within -4.3 dBm to -10.6 dBm. 3. Clean the LC fiber end-faces and optical port with a specialized cleaner, then reseat the fiber.

TX_FAULT_BIAS_HIGH (Laser Bias Current High)

Port LINK/ACT LED slow blinking Amber (0.5Hz) or solid Amber

Aging of the QSFP28 LAN-WDM/CWDM DFB laser, internal driver IC failure, or laser end-of-life condition

1. Run 'display optical-module [interface] verbose' to read the actual Tx Bias Current values. 2. Verify if the bias current exceeds the high alarm threshold (typically >100mA). 3. If current remains above threshold and TX power degrades, hot-swap the QSFP28 transceiver during maintenance window.

MODULE_TEMP_HIGH (Optical Module Over-Temperature)

Main controller ALM LED solid Amber, Port LED remains Green

Chassis air filter clogged, equipment room HVAC failure, or switch fan failure causing insufficient heat dissipation (case temperature >75°C)

1. Run 'display optical-module verbose' to check current real-time DDM temperature. 2. Check switch fan status ('display fan') and verify data center ambient temperature is below 35°C. 3. Clean the chassis dust filters and optimize rack airflow containment to prevent irreversible laser damage.

CRC_ERR_ALM (Port CRC Error Threshold Exceeded)

Port LINK/ACT LED flashing Green rapidly with packet loss

Macro/micro-bending losses in patch cord, contaminated LC end-faces, chromatic dispersion causing eye closure, or internal CDR lock loss

1. Run 'display interface [interface]' to inspect InErrors and CRC error increment rate. 2. Inspect fiber patch cord routing; verify single-mode bend radius is strictly >30mm. 3. Test the optical link using OTDR/power meter to isolate high-loss fusion splices or replace patch cords.

OPT_TX_PWR_LOW (Optical TX Power Low)

Port LINK/ACT LED solid Green, NMS reports Yellow Warning

Internal transmitter optical path attenuation, damaged fiber launch facet, or driver voltage drop (Tx Power below -4.3 dBm/lane low threshold)

1. Run 'display optical-module verbose' to inspect the Tx Power on each of the 4 lanes. 2. Connect a calibrated optical power meter directly to the QSFP28 TX port to verify DDM calibration accuracy. 3. If measured transmit power is genuinely below -4.3 dBm/lane, replace the transceiver before service outage occurs.

Access Complete Maintenance & Full Alarm Troubleshooting Manual

This page lists high-frequency critical alarm codes commonly encountered in field maintenance. Comprehensive manufacturer troubleshooting matrices, board-level repair guides, detailed electrical schematics, and firmware commissioning manuals are delivered alongside equipment upon formal project procurement, accompanied by dedicated FAE technical support.

Contact Account Manager for Full Manual

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