This article describes how to adjust the transceiver's optical output power on an interface.

Please note that this option is dependent on the Juniper router model and the interface SFP type you want to configure.

labroot@R01-re0> show interfaces diagnostics optics et-0/0/0 | match dBm | match output | except threshold 

  Laser output power            : 1.597 mW / 2.03 dBm

  Laser output power            : 1.163 mW / 0.65 dBm

  Laser output power            : 1.270 mW / 1.04 dBm

  Laser output power            : 1.403 mW / 1.47 dBm

FPC 0      REV 12  750-071976  CAJH7537     LC1101 - 30C / 30Q / 96X

  Xcvr 0    REV 01  740-058732  1GCQA4081WP    QSFP-100GBASE-LR4

Customer experience High/Low Rx power on high end and would like to tweak the optics Tx power on the near end interface.

Please note that the command is dependent on the type of FPC and QSFP, Juniper router model and software version.

The minimum and maximum transmit output power depend on the optical transceivers and transceivers vendor type. 

Step-1: Enter Configuration Mode and Navigate to the Optical Interface: 

Step-2: set optics-options tx-power <tx-power> 

labroot@R01-re0# set interfaces et-0/0/0 optics-options tx-power ?

Possible completions:

 <tx-power>      Transmit laser output power (dBm)

labroot@R01-re0# set interfaces et-0/0/0 optics-options tx-power 3.5   

{master}[edit]

[email protected]# show | compare 

[edit interfaces et-0/0/0]

+  optics-options {

+    tx-power 3.5;

+  }

Step-3: Commit