- show interfaces diagnostics optics interface-name
Command introduced before JUNOS Release 7.4.
(M120, M320, T320, MX960, and T640 routers only) Display diagnostics data and alarms for 10-Gigabit Ethernet dense wavelength-division multiplexing (DWDM) interfaces.
interface-name — Interface name: ge-fpc/pic/port or xe-fpc/pic/port.
XENPAK Multisource Agreement (MSA) optics, 300-pin MSA optics, bidirectional small form-factor pluggable transceiver (SFP) optics, SFP optics, 10-gigabit small form-factor pluggable transceiver (XFP) optics, and Optical Transport Network (OTN) optics are supported. The 300-pin MSA tool kit polls the PIC and the XENPAK driver polls the XENPAK transceiver in 1-second intervals for diagnostics data, alarms, and warnings and stores them into memory. The alarms will not cause the links to go down or the LEDs to change color, nor generate SNMP traps. Changes in alarm and warning status will generate system log messages.
Thresholds that trigger a high alarm, low alarm, high warning, or low warning are set by the transponder vendors. Generally, a high alarm or low alarm indicates that the optics module is not operating properly. This information can be used to diagnose why a PIC is not working.
![]() |
Note: Some 10-Gigabit Ethernet XENPAK transceivers do not support all optical diagnostics. If the diagnostics are not supported, you will see N/A in the following fields in the output: Laser bias current, Laser output power, Laser rx power, and Module temperature. |
![]() |
Note: The show interfaces diagnostics optics command for optical interfaces does not report the decibel (dBm) value of the received signal if the received power is zero milliwatts (0.0000 mW). |
view
Table 34 lists the output fields for the show interfaces diagnostics optics command when the router is operating with MSA optics. Output fields are listed in the approximate order in which they appear.
Table 34: 10-Gigabit Ethernet 300-Pin MSA Optics show interfaces diagnostics optics Output Fields
Table 35 lists the output fields for the show interfaces diagnostics optics command when the router is operating with bidirectional SFP optics. Output fields are listed in the approximate order in which they appear.
Table 35: 10-Gigabit Ethernet Bidirectional SFP Optics show interfaces diagnostics optics Output Fields
Table 36 lists the output fields for the show interfaces diagnostics optics command generated from 10-Gigabit Ethernet XENPAK OTN optics.
Table 36: XENPAK OTN Optics show interfaces diagnostics optics Output Fields
Table 37 lists the output fields for the show interfaces diagnostics optics command when the router is operating with SFP MSA optics. Output fields are listed in the approximate order in which they appear.
Table 37: 10-Gigabit Ethernet SFP MSA Optics show interfaces diagnostics Output Fields
Table 38 lists the output fields for the show interfaces diagnostics optics command when the router is operating with XENPAK MSA optics. Output fields are listed in the approximate order in which they appear.
Table 38: XENPAK MSA Optics show interfaces diagnostics Output Fields
Table 39 lists the output fields for the show interfaces diagnostics optics command when the router is operating with XFP optics. Output fields are listed in the approximate order in which they appear.
Table 39: 10-Gigabit Ethernet XFP Optics show interfaces diagnostics optics Output Fields
user@host> show interfaces diagnostics optics
ge-5/0/0
Physical interface: ge-5/0/0 Laser bias current : 79.938 mA Laser output power : 1.592 mW / 2.02 dBm Receiver signal average optical power : 1.3854 mW / 1.42 dBm Laser end-of-life alarm : Off Laser wavelength alarm : Off Laser bias current alarm : Off Laser temperature alarm : Off Laser power alarm : Off Modulator temperature alarm : Off Modulator bias alarm : Off Tx multiplexer FIFO error alarm : Off Tx loss of PLL lock alarm : Off Rx loss of average optical power alarm: Off Rx loss of AC power alarm : Off Rx loss of PLL lock alarm : Off
user@host> show interfaces diagnostics optics
ge-3/0/6
Physical interface: ge-3/0/6
Laser bias current : 13.356 mA
Laser output power : 0.2210 mW / -6.56 dBm
Module temperature : 36 degrees C / 96 degrees F
Module voltage : 3.2180 V
Receiver signal average optical power : 0.2429 mW / -6.15 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 output power high alarm : Off
Laser output power low alarm : Off
Laser output power high warning : Off
Laser output power low warning : Off
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
Laser rx power high alarm : Off
Laser rx power low alarm : Off
Laser rx power high warning : Off
Laser rx power low warning : Off
Laser bias current high alarm threshold : 70.000 mA
Laser bias current low alarm threshold : 0.002 mA
Laser bias current high warning threshold : 65.000 mA
Laser bias current low warning threshold : 0.002 mA
Laser output power high alarm threshold : 1.0000 mW / 0.00 dBm
Laser output power low alarm threshold : 0.0560 mW / -12.52 dBm
Laser output power high warning threshold : 0.6300 mW / -2.01 dBm
Laser output power low warning threshold : 0.0890 mW / -10.51 dBm
Module temperature high alarm threshold : 100 degrees C / 212 degrees F
Module temperature low alarm threshold : -50 degrees C / -58 degrees F
Module temperature high warning threshold : 95 degrees C / 203 degrees F
Module temperature low warning threshold : -48 degrees C / -54 degrees F
Module voltage high alarm threshold : 3.700 V
Module voltage low alarm threshold : 2.900 V
Module voltage high warning threshold : 3.600 V
Module voltage low warning threshold : 3.000 V
Laser rx power high alarm threshold : 1.9953 mW / 3.00 dBm
Laser rx power low alarm threshold : 0.0001 mW / -40.00 dBm
Laser rx power high warning threshold : 1.0000 mW / 0.00 dBm
Laser rx power low warning threshold : 0.0010 mW / -30.00 dBm
user@host> show interfaces diagnostics optics
ge-0/3/0
Physical interface: ge-0/3/0
Laser bias current : 23.408 mA
Laser output power : 1.479 mW / 1.70 dBm
Module temperature : 37 degrees C / 99 degrees F
Laser rx power : 0.121 mW / -9.16 dBm
Laser bias current high alarm : Off
Laser bias current low alarm : Off
Laser output power high alarm : Off
Laser output power low alarm : Off
Module temperature high alarm : Off
Module temperature low alarm : Off
Laser rx power high alarm : Off
Laser rx power low alarm : Off
Laser bias current high warning : Off
Laser bias current low warning : Off
Laser output power high warning : Off
Laser output power low warning : Off
Module temperature high warning : Off
Module temperature low warning : Off
Laser rx power high warning : Off
Laser rx power low warning : Off
Laser bias current high alarm threshold : 31.000 mA
Laser bias current low alarm threshold : 10.000 mA
Laser output power high alarm threshold : 6.000 mW / 7.78 dBm
Laser output power low alarm threshold : 0.100 mW / -10.00 dBm
Module temperature high alarm threshold : 85 degrees C / 185 degrees F
Module temperature low alarm threshold : 0 degrees C / 32 degrees F
Laser rx power high alarm threshold : 1.000 mW / 0.00 dBm
Laser rx power low alarm threshold : 0.001 mW / -30.00 dBm
Laser bias current high warning threshold : 28.000 mA
Laser bias current low warning threshold : 11.000 mA
Laser output power high warning threshold : 5.000 mW / 6.99 dBm
Laser output power low warning threshold : 0.500 mW / -3.01 dBm
Module temperature high warning threshold : 70 degrees C / 158 degrees F
Module temperature low warning threshold : 10 degrees C / 50 degrees F
Laser rx power high warning threshold : 0.501 mW / -3.00 dBm
Laser rx power low warning threshold : 0.001 mW / -28.86 dBm
user@host> show interfaces diagnostics optics
ge-1/0/0
Physical interface: ge-1/0/0
Laser bias current : 49.010 mA
Laser output power : 1.263 mW / 1.01 dBm
Module temperature : 17 degrees C / 62 degrees F
Module voltage : 4.21 V
Laser rx power : 0.060 mW / -12.21 dBm
Laser bias current high alarm : Off
Laser bias current low alarm : Off
Laser output power high alarm : Off
Laser output power low alarm : Off
Module temperature high alarm : Off
Module temperature low alarm : Off
Module voltage high alarm : Off
Module voltage low alarm : Off
Laser rx power high alarm : Off
Laser rx power low alarm : Off
Laser bias current high warning : Off
Laser bias current low warning : Off
Laser output power high warning : Off
Laser output power low warning : Off
Module temperature high warning : Off
Module temperature low warning : Off
Module voltage high warning : Off
Module voltage low warning : Off
Laser rx power high warning : Off
Laser rx power low warning : Off
Laser bias current high alarm threshold : 70.000 mA
Laser bias current low alarm threshold : 20.000 mA
Laser bias current high warning threshold : 65.000 mA
Laser bias current low warning threshold : 25.000 mA
Laser output power high alarm threshold : 1.4120 mW / 1.50 dBm
Laser output power low alarm threshold : 0.1990 mW / -7.01 dBm
Laser output power high warning threshold : 1.2580 mW / 1.00 dBm
Laser output power low warning threshold : 0.2230 mW / -6.52 dBm
Module temperature high alarm threshold : 78 degrees C /172 degrees F
Module temperature low alarm threshold : 13 degrees C / 9 degrees F
Module temperature high warning threshold : 75 degrees C /167 degrees F
Module temperature low warning threshold : 10 degrees C / 14 degrees F
Module voltage high alarm threshold : 5.71 V
Module voltage low alarm threshold : 2.05 V
Module voltage high warning threshold : 5.20 V
Module voltage low warning threshold : 3.11 V
Laser rx power high alarm threshold : 1.7783 mW / 2.50 dBm
Laser rx power low alarm threshold : 0.0100 mW / -20.00 dBm
Laser rx power high warning threshold : 1.5849 mW / 2.00 dBm
Laser rx power low warning threshold : 0.0158 mW / -18.01 dBm
user@host> show interfaces diagnostics optics
ge-1/0/0
Physical interface: ge-1/0/0
Laser bias current : 57.250 mA
Laser output power : 1.295 mW / 1.12 dBm
Module temperature : 24 degrees C / 76 degrees F
Laser rx power : 0.000 mW / -35.23 dBm
Laser bias current high alarm : Off
Laser bias current low alarm : Off
Laser output power high alarm : Off
Laser output power low alarm : Off
Module temperature high alarm : Off
Module temperature low alarm : Off
Laser rx power high alarm : Off
Laser rx power low alarm : Off
Laser bias current high warning : Off
Laser bias current low warning : Off
Laser output power high warning : Off
Laser output power low warning : Off
Module temperature high warning : Off
Module temperature low warning : Off
Laser rx power high warning : Off
Laser rx power low warning : On
Laser bias current high alarm threshold : 110.000 mA
Laser bias current low alarm threshold : 30.000 mA
Laser output power high alarm threshold : 3.162 mW / 5.00 dBm
Laser output power low alarm threshold : 0.269 mW / -5.70 dBm
Module temperature high alarm threshold : 80 degrees C / 176 degrees F
Module temperature low alarm threshold : -10 degrees C / 14 degrees F
Laser rx power high alarm threshold : 1.259 mW / 1.00 dBm
Laser rx power low alarm threshold : 0.005 mW / -23.01 dBm
Laser bias current high warning threshold : 100.000 mA
Laser bias current low warning threshold : 40.000 mA
Laser output power high warning threshold : 2.511 mW / 4.00 dBm
Laser output power low warning threshold : 0.338 mW / -4.71 dBm
Module temperature high warning threshold : 75 degrees C / 167 degrees F
Module temperature low warning threshold : -5 degrees C / 23 degrees F
Laser rx power high warning threshold : 1.000 mW / 0.00 dBm
Laser rx power low warning threshold : 0.010 mW / -20.00 dBm
user@host> show interfaces diagnostics optics
xe-2/1/0
Physical interface: xe-2/1/0
Laser bias current : 52.060 mA
Laser output power : 0.5640 mW / -2.49 dBm
Module temperature : 31 degrees C / 88 degrees F
Laser rx power : 0.0844 mW / -10.74 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 output power high alarm : Off
Laser output power low alarm : Off
Laser output power high warning : Off
Laser output power low warning : Off
Module temperature high alarm : Off
Module temperature low alarm : Off
Module temperature high warning : Off
Module temperature low warning : Off
Laser rx power high alarm : Off
Laser rx power low alarm : Off
Laser rx power high warning : Off
Laser rx power low warning : Off
Module not ready alarm : Off
Module power down alarm : Off
Tx data not ready alarm : Off
Tx not ready alarm : Off
Tx laser fault alarm : Off
Tx CDR loss of lock alarm : Off
Rx not ready alarm : Off
Rx loss of signal alarm : Off
Rx CDR loss of lock alarm : Off
Laser bias current high alarm threshold : 130.000 mA
Laser bias current low alarm threshold : 10.000 mA
Laser bias current high warning threshold : 120.000 mA
Laser bias current low warning threshold : 12.000 mA
Laser output power high alarm threshold : 0.8910 mW / -0.50 dBm
Laser output power low alarm threshold : 0.2230 mW / -6.52 dBm
Laser output power high warning threshold : 0.7940 mW / -1.00 dBm
Laser output power low warning threshold : 0.2510 mW / -6.00 dBm
Module temperature high alarm threshold : 90 degrees C / 194 degrees F
Module temperature low alarm threshold : -5 degrees C / 23 degrees F
Module temperature high warning threshold : 85 degrees C / 185 degrees F
Module temperature low warning threshold : 0 degrees C / 32 degrees F
Laser rx power high alarm threshold : 1.2589 mW / 1.00 dBm
Laser rx power low alarm threshold : 0.0323 mW / -14.91 dBm
Laser rx power high warning threshold : 1.1220 mW / 0.50 dBm
Laser rx power low warning threshold : 0.0363 mW / -14.40 dBm