Description

Interface with QSFP-100GBASE-ER4L optics does not come up because QSFP-100G-ER4L is not supported in certain Junos releases.

Symptoms

Interface with a QSFP-100GBASE-ER4L optics shows Laser bias current as zero:


show interfaces diagnostics optics et-1/1/5
Physical interface: et-1/1/5
Module temperature                        :  27 degrees C / 81 degrees F
Module voltage                            :  3.3060 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   :  79 degrees C / 174 degrees F
Module temperature low alarm threshold    :  -4 degrees C / 25 degrees F
Module temperature high warning threshold :  75 degrees C / 167 degrees F
Module temperature low warning threshold  :  0 degrees C / 32 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   :  129.999 mA
Laser bias current low alarm threshold    :  19.999 mA
Laser bias current high warning threshold :  119.999 mA
Laser bias current low warning threshold  :  29.999 mA
Laser output power high alarm threshold   :  2.1877 mW / 3.40 dBm
Laser output power low alarm threshold    :  0.4570 mW / -3.40 dBm
Laser output power high warning threshold :  1.9498 mW / 2.90 dBm
Laser output power low warning threshold  :  0.5128 mW / -2.90 dBm
Laser rx power high alarm threshold       :  0.5623 mW / -2.50 dBm
Laser rx power low alarm threshold        :  0.0040 mW / -23.98 dBm
Laser rx power high warning threshold     :  0.4466 mW / -3.50 dBm
Laser rx power low warning threshold      :  0.0064 mW / -21.94 dBm
Lane 0
Laser bias current                        :  0.000 mA
Laser output power                        :  0.000 mW / - Inf dBm
Laser receiver power                      :  0.000 mW / - Inf dBm
Laser bias current high alarm             :  Off
Laser bias current low alarm              :  On
Laser bias current high warning           :  Off
Laser bias current low warning            :  On
Laser receiver power high alarm           :  Off
Laser receiver power low alarm            :  On
Laser receiver power high warning         :  Off
Laser receiver power low warning          :  On
Tx loss of signal functionality alarm     :  Off
Rx loss of signal alarm                   :  Off
Tx laser disabled alarm                   :  Off
Lane 1
Laser bias current                        :  0.000 mA
Laser output power                        :  0.000 mW / - Inf dBm
Laser receiver power                      :  0.000 mW / - Inf dBm
Laser bias current high alarm             :  Off
Laser bias current low alarm              :  On
Laser bias current high warning           :  Off
Laser bias current low warning            :  On
Laser receiver power high alarm           :  Off
Laser receiver power low alarm            :  On
Laser receiver power high warning         :  Off
Laser receiver power low warning          :  On
Tx loss of signal functionality alarm     :  Off
Rx loss of signal alarm                   :  Off
Tx laser disabled alarm                   :  Off
Lane 2
Laser bias current                        :  0.000 mA
Laser output power                        :  0.000 mW / - Inf dBm
Laser receiver power                      :  0.000 mW / - Inf dBm
Laser bias current high alarm             :  Off
Laser bias current low alarm              :  On
Laser bias current high warning           :  Off
Laser bias current low warning            :  On
Laser receiver power high alarm           :  Off
Laser receiver power low alarm            :  On
Laser receiver power high warning         :  Off
Laser receiver power low warning          :  On
Tx loss of signal functionality alarm     :  Off
Rx loss of signal alarm                   :  Off
Tx laser disabled alarm                   :  Off
Lane 3
Laser bias current                        :  0.000 mA
Laser output power                        :  0.000 mW / - Inf dBm
Laser receiver power                      :  0.000 mW / - Inf dBm
Laser bias current high alarm             :  Off
Laser bias current low alarm              :  On
Laser bias current high warning           :  Off
Laser bias current low warning            :  On
Laser receiver power high alarm           :  Off
Laser receiver power low alarm            :  On
Laser receiver power high warning         :  Off
Laser receiver power low warning          :  On
Tx loss of signal functionality alarm     :  Off


Physical interface: et-1/1/5, Enabled, Physical link is Down

Solution

QSFP-100G-ER4L may be not supported by this particular JUNOS release.

ER4L is supported in Junos 17.3R1, but support for this QSFP is in for prior releases such as 17.2R2, 17.1R3, 16.2R2, 15.1F6-S7, and 16.1R4-S4.

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