While Connecting Juniper MX304 to a Nokia 1830 we can see the port down. Juniper is seeing light from the Nokia 1830 and is transmitting light to the Nokia 1830.

The port will remain down, but we can see the light will be transmitting from the port.

root@MX304-RE0> show interfaces diagnostics optics et-0/1/0   

Physical interface: et-0/1/0

  Module temperature            : 26 degrees C / 80 degrees F

  Module voltage              : 3.3500 V

  Module temperature high alarm      : Off

  Module temperature low alarm       : Off

  Module temperature high warning     : Off

  Module temperature low warning      : Off

  Module voltage high alarm        : Off

  Module voltage low alarm         : Off

  Module voltage high warning       : Off

  Module voltage low warning        : Off

  Module temperature high alarm threshold : 80 degrees C / 176 degrees F

  Module temperature low alarm threshold  : -10 degrees C / 14 degrees F

  Module temperature high warning threshold : 75 degrees C / 167 degrees F

  Module temperature low warning threshold : -5 degrees C / 23 degrees F

  Module voltage high alarm threshold   : 3.6300 V

  Module voltage low alarm threshold    : 2.9700 V

  Module voltage high warning threshold  : 3.4640 V

  Module voltage low warning threshold   : 3.1340 V

  Laser bias current high alarm threshold : 120.000 mA

  Laser bias current low alarm threshold  : 20.000 mA

  Laser bias current high warning threshold : 110.000 mA

  Laser bias current low warning threshold : 30.000 mA

  Laser output power high alarm threshold : 5.6234 mW / 7.50 dBm

  Laser output power low alarm threshold  : 0.2884 mW / -5.40 dBm

  Laser output power high warning threshold : 3.5480 mW / 5.50 dBm

  Laser output power low warning threshold : 0.5754 mW / -2.40 dBm

  Laser rx power high alarm threshold   : 5.6234 mW / 7.50 dBm

  Laser rx power low alarm threshold    : 0.0676 mW / -11.70 dBm

  Laser rx power high warning threshold  : 3.5481 mW / 5.50 dBm

  Laser rx power low warning threshold   : 0.1349 mW / -8.70 dBm

  Laser temperature high alarm threshold  : 80 degrees C / 176 degrees F

  Laser temperature low alarm threshold  : -10 degrees C / 14 degrees F

  Laser temperature high warning threshold : 75 degrees C / 167 degrees F

  Laser temperature low warning threshold : -5 degrees C / 23 degrees F

 Lane 0

  Laser bias current            : 92.500 mA

  Laser output power            : 1.502 mW / 1.77 dBm

  Laser receiver power           : 3.059 mW / 4.86 dBm

  Laser bias current high alarm      : Off

  Laser bias current low alarm       : Off

  Laser bias current high warning     : Off

  Laser bias current low warning      : Off

  Laser receiver power high alarm     : Off

  Laser receiver power low alarm      : Off

  Laser receiver power high warning    : Off

  Laser receiver power low warning     : Off

  Tx loss of signal functionality alarm  : Off

  Rx loss of signal alarm         : Off

  Tx laser disabled alarm         : Off

As the optic on the Nokia 1830 has 4 lanes at 25g each and the optic on the Juniper MX304 should be QSFP28-100GBASE-LR4 which will have 4 lanes.

The optics QSFP28-100G-LR1 is not supported and port will remain down

Case 2024-0207-070518