Package: ethtool Version: 1:4.19-1 Severity: important The command ethtool -m is unable to read the transceiver DOM values.
Here is a transcript: root@localhost:~# ethtool -i ens2f0 driver: mlx5_core version: 5.0-0 firmware-version: 14.25.8000 (DEL2420110034) expansion-rom-version: bus-info: 0000:65:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: no supports-register-dump: no supports-priv-flags: yes root@localhost:~# ethtool -m ens2f0 Identifier : 0x03 (SFP) Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID) Connector : 0x07 (LC) Transceiver codes : 0x10 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 Transceiver type : 10G Ethernet: 10G Base-SR Encoding : 0x06 (64B/66B) BR, Nominal : 10300MBd Rate identifier : 0x00 (unspecified) Length (SMF,km) : 0km Length (SMF) : 0m Length (50um) : 80m Length (62.5um) : 20m Length (Copper) : 0m Length (OM3) : 300m Laser wavelength : 850nm Vendor name : Pureoptics Vendor OUI : 00:00:00 Vendor PN : EX-SFP-10GE-SR Vendor rev : B4 Option values : 0x00 0x1a Option : RX_LOS implemented Option : TX_FAULT implemented Option : TX_DISABLE implemented BR margin, max : 0% BR margin, min : 0% Vendor SN : M4787212 Date code : 200222 Optical diagnostics support : Yes Laser bias current : 0.000 mA Laser output power : 0.0000 mW / -inf dBm Receiver signal average optical power : 0.0000 mW / -inf dBm Module temperature : 0.00 degrees C / 32.00 degrees F Module voltage : 0.0000 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 : 0.000 mA Laser bias current low alarm threshold : 0.000 mA Laser bias current high warning threshold : 0.000 mA Laser bias current low warning threshold : 0.000 mA Laser output power high alarm threshold : 0.0000 mW / -inf dBm Laser output power low alarm threshold : 0.0000 mW / -inf dBm Laser output power high warning threshold : 0.0000 mW / -inf dBm Laser output power low warning threshold : 0.0000 mW / -inf dBm Module temperature high alarm threshold : 0.00 degrees C / 32.00 degrees F Module temperature low alarm threshold : 0.00 degrees C / 32.00 degrees F Module temperature high warning threshold : 0.00 degrees C / 32.00 degrees F Module temperature low warning threshold : 0.00 degrees C / 32.00 degrees F Module voltage high alarm threshold : 0.0000 V Module voltage low alarm threshold : 0.0000 V Module voltage high warning threshold : 0.0000 V Module voltage low warning threshold : 0.0000 V Laser rx power high alarm threshold : 0.0000 mW / -inf dBm Laser rx power low alarm threshold : 0.0000 mW / -inf dBm Laser rx power high warning threshold : 0.0000 mW / -inf dBm Laser rx power low warning threshold : 0.0000 mW / -inf dBm As you can see all mesuring values are zeros. I am using Debian GNU/Linux 10 (buster), kernel 4.19.0-9-amd64 #1 SMP Debian 4.19.118-2 (2020-04-29) x86_64 GNU/Linux and libc6 2.28-10 FYI, I get correct values using SystemRescueCD 6 (ethtool 5.0, kernel 4.19.34-1-lts) on this same hardware, using the same command. Regards,-- Yannis Aribaud
