Diagnosing transceiver modules
The switch provides the alarm function and digital diagnosis function for transceiver modules. When a transceiver module fails or is not operating normally, you can check the alarms present on the transceiver module to identify the fault source or examine the key parameters monitored by the digital diagnosis function, including the temperature, voltage, laser bias current, TX power, and RX power.
To diagnose transceiver modules, execute the following command in any view:
Task | Command | Remarks |
|---|---|---|
Display alarms present on the transceiver in a specified interface | display transceiver alarm interface [ interface-type interface-number ] | Available for all transceivers If no error occurs, None is displayed. |
Display the present measured values of the digital diagnosis parameters for the transceiver in a specified interface | display transceiver diagnosis interface [ interface-type interface-number ] | Available for all transceivers. |
# Display the alarm information about the transceiver plugged in GigabitEthernet 3/0/1.
<Sysname> display transceiver alarm interface GigabitEthernet 3/0/1 GigabitEthernet3/0/1 transceiver current alarm information: RX loss of signal RX power low
Table 22 shows the alarm information that may occur to the commonly used transceivers.
Table 22: Command output
Field | Remarks |
|---|---|
transceiver current alarm information | Alarms present on the transceiver module. |
SFP/SFP+: | |
RX loss of signal | Received signals are lost. |
TX fault | Transmission error. |
RX power high | The received optical power is high. |
RX power low | The received optical power is low. |
TX power high | The transmitted optical power is high. |
TX power low | The transmitted optical power is low. |
TX bias high | The transmitted bias current is high. |
TX bias low | The transmitted bias current is low. |
Temp high | The temperature is high. |
Temp low | The temperature is low. |
Voltage high | The voltage is high. |
Voltage low | The voltage is low. |
Transceiver info I/O error | Transceiver information read and write error |
Transceiver info checksum error | Transceiver information checksum error |
Transceiver type and port configuration mismatch | The type of the transceiver module does not match the port configuration. |
Transceiver type not supported by port hardware | The port does not support this type of transceiver modules. |
XFP | |
RX loss of signal | Received signals are lost. |
RX not ready | The receiving status is not ready |
RX CDR loss of lock | Receiving CDR loss of lock. |
TX fault | Transmission error. |
TX not ready | The transmission status is ready. |
TX CDR loss of lock | Transmission CDR loss of lock. |
Module not ready | The module is not ready. |
APD supply fault | Avalanche Photo Diode (APD) supply error. |
TEC fault | Thermoelectric Cooler (TEC) error. |
Wavelength unlocked | Wavelength loss of lock. |
RX power high | The received optical power is high. |
RX power low | The received optical power is low. |
TX power high | The transmitted optical power is high. |
TX power low | The transmitted optical power is low. |
TX bias high | The transmitted bias current is high. |
TX bias low | The transmitted bias current is low. |
Temp high | The temperature is high. |
Temp low | The temperature is low. |
Voltage high | The voltage is high. |
Voltage low | The voltage is low. |
Transceiver info I/O error | Transceiver information read and write error |
Transceiver info checksum error | Transceiver information checksum error |
Transceiver type and port configuration mismatch | The type of the transceiver module does not match the port configuration. |
Transceiver type not supported by port hardware | The port does not support this type of transceiver modules. |
# Display the currently measured values of the fault detection parameters of the transceiver plugged in interface GigabitEthernet 3/0/2.
<Sysname> display transceiver diagnosis interface gigabitethernet 3/0/2
GigabitEthernet3/0/2 transceiver diagnostic information:
Current diagnostic parameters:
Temp(°C) Voltage(V) Bias(mA) RX power(dBm) TX power(dBm)
36 3.31 6.13 -35.64 -5.19
Table 23: Command output
Field | Description |
|---|---|
transceiver diagnostic information | Digital diagnosis information of the transceiver module on the interface. |
Temp.(°C) | Digital diagnosis parameter—Temperature, in °C, accurate to 1°C. |
Voltage(V) | Digital diagnosis parameter—Voltage, in V, accurate to 0.01 V. |
Bias(mA) | Digital diagnosis parameter—Bias current, in mA, accurate to 0.01 mA. |
RX power(dBm) | Digital diagnosis parameter—RX power, in dBm, accurate to 0.01 dBm. |
TX power(dBm) | Digital diagnosis parameter—TX power, in dBm, accurate to 0.01 dBm. |