История изменений
Исправление Bloody, (текущая версия) :
надо смотреть логи, на некоторых сетевых картах можно читать DDM, если коммутатор - аналогично, 850nm сигнал можно оценить «на глаз», его хорошо видно даже при освещении
ethtool --module-info enp9s0f0
Identifier : 0x03 (SFP)
Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)
Connector : 0x07 (LC)
Transceiver codes : 0x10 0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x00
Transceiver type : 10G Ethernet: 10G Base-SR
Transceiver type : Ethernet: 1000BASE-SX
Encoding : 0x06 (64B/66B)
BR, Nominal : 10300MBd
Rate identifier : 0x02 (8/4/2G Rx Rate_Select only)
Length (SMF,km) : 0km
Length (SMF) : 0m
Length (50um) : 80m
Length (62.5um) : 30m
Length (Copper) : 0m
Length (OM3) : 300m
Laser wavelength : 850nm
Vendor name : Intel Corp
Vendor OUI : 00:1b:21
Vendor PN : FTLX8571D3BCV-IT
Vendor rev : A
Option values : 0x00 0x3a
Option : RX_LOS implemented
Option : TX_FAULT implemented
Option : TX_DISABLE implemented
Option : RATE_SELECT implemented
BR margin, max : 0%
BR margin, min : 0%
Vendor SN : PGCP570100
Date code : 110302
Optical diagnostics support : Yes
Laser bias current : 5.352 mA
Laser output power : 0.5846 mW / -2.33 dBm
Receiver signal average optical power : 0.4836 mW / -3.16 dBm
Module temperature : 37.66 degrees C / 99.78 degrees F
Module voltage : 3.3282 V
Alarm/warning flags implemented : Yes
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 : 50.000 mA
Laser bias current low alarm threshold : 1.000 mA
Laser bias current high warning threshold : 40.000 mA
Laser bias current low warning threshold : 2.000 mA
Laser output power high alarm threshold : 1.2589 mW / 1.00 dBm
Laser output power low alarm threshold : 0.1175 mW / -9.30 dBm
Laser output power high warning threshold : 1.0000 mW / 0.00 dBm
Laser output power low warning threshold : 0.1479 mW / -8.30 dBm
Module temperature high alarm threshold : 90.00 degrees C / 194.00 degrees F
Module temperature low alarm threshold : -10.00 degrees C / 14.00 degrees F
Module temperature high warning threshold : 85.00 degrees C / 185.00 degrees F
Module temperature low warning threshold : -5.00 degrees C / 23.00 degrees F
Module voltage high alarm threshold : 3.6000 V
Module voltage low alarm threshold : 3.0000 V
Module voltage high warning threshold : 3.5000 V
Module voltage low warning threshold : 3.0500 V
Laser rx power high alarm threshold : 1.2589 mW / 1.00 dBm
Laser rx power low alarm threshold : 0.0490 mW / -13.10 dBm
Laser rx power high warning threshold : 1.0000 mW / 0.00 dBm
Laser rx power low warning threshold : 0.0617 mW / -12.10 dBm
Исходная версия Bloody, :
надо смотреть логи, на некоторых сетевых картах можно читать DDM, если коммутатор - аналогично, 850nm сигнал можно оценить «на глаз», его хорошо видно даже при освещении.