Is there any way to check fiber interface status?

[Herschel_Liang]

Is there any way to check fiber interface status? Like Form Factor, Protocol, Wavelength (nm), Connector, Distance (Max), Supported Cable, Type, Input Level(Receive Power) dBm, Output Level(Transmit Power) dBm, etc. though command line in Gaia?

[Timothy_Hall · Accepted solution]

Ethtool was updated and picked up a bunch of new command line switches in Gaia kernel 3.10.  From expert mode try ethtool -m (interfacename).  Under kernel 2.6.18 ethtool does not have the -m option available, but try mii-diag -g (interfacename).    On Gaia 3.10 you should see something like this with ethtool -m:

        Identifier                                : 0x03 (SFP)
        Extended identifier                       : 0x04 (GBIC/SFP defined by 2-wire interface ID)
        Connector                                 : 0x07 (LC)
        Transceiver codes                         : 0x00 0x00 0x00 0x01 0x20 0x40 0x0c 0x05
        Transceiver type                          : Ethernet: 1000BASE-SX
        Transceiver type                          : FC: intermediate distance (I)
        Transceiver type                          : FC: Shortwave laser w/o OFC (SN)
        Transceiver type                          : FC: Multimode, 62.5um (M6)
        Transceiver type                          : FC: Multimode, 50um (M5)
        Transceiver type                          : FC: 200 MBytes/sec
        Transceiver type                          : FC: 100 MBytes/sec
        Encoding                                  : 0x01 (8B/10B)
        BR, Nominal                               : 2100MBd
        Rate identifier                           : 0x00 (unspecified)
        Length (SMF,km)                           : 0km
        Length (SMF)                              : 0m
        Length (50um)                             : 300m
        Length (62.5um)                           : 150m
        Length (Copper)                           : 0m
        Length (OM3)                              : 0m
        Laser wavelength                          : 850nm
        Vendor name                               : JDSU
        Vendor OUI                                : 00:01:9c
        Vendor PN                                 : PLRXPL-VI-S24-22
        Vendor rev                                : 1
        Optical diagnostics support               : Yes
        Laser bias current                        : 21.348 mA
        Laser output power                        : 0.3186 mW / -4.97 dBm
        Receiver signal average optical power     : 0.3195 mW / -4.96 dBm
        Module temperature                        : 41.70 degrees C / 107.05 degrees F
        Module voltage                            : 3.2947 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   : 10.000 mA
        Laser bias current low alarm threshold    : 1.000 mA
        Laser bias current high warning threshold : 9.000 mA
         Laser bias current low warning threshold  : 2.000 mA
        Laser output power high alarm threshold   : 0.8000 mW / -0.97 dBm
        Laser output power low alarm threshold    : 0.1000 mW / -10.00 dBm
        Laser output power high warning threshold : 0.6000 mW / -2.22 dBm
        Laser output power low warning threshold  : 0.2000 mW / -6.99 dBm
        Module temperature high alarm threshold   : 90.00 degrees C / 194.00 degrees F
        Module temperature low alarm threshold    : -40.00 degrees C / -40.00 degrees F
        Module temperature high warning threshold : 85.00 degrees C / 185.00 degrees F
        Module temperature low warning threshold  : -40.00 degrees C / -40.00 degrees F
        Module voltage high alarm threshold       : 4.0000 V
        Module voltage low alarm threshold        : 0.0000 V
        Module voltage high warning threshold     : 3.6450 V
        Module voltage low warning threshold      : 2.9550 V
        Laser rx power high alarm threshold       : 1.6000 mW / 2.04 dBm
        Laser rx power low alarm threshold        : 0.0100 mW / -20.00 dBm
        Laser rx power high warning threshold     : 1.0000 mW / 0.00 dBm
        Laser rx power low warning threshold      : 0.0200 mW / -16.99 dBm

[Herschel_Liang]

THX, our gw version is R80.10 with kernel v2.6.18. mii-diag -g (interfacename) output is as screenshot. Anyway, thanks!

[ItsTheFirewall]

Is there a parallel of the same command for maestro. unfortunately, we are not able to get the same on R81.10sp

[Timothy_Hall]

Use ethtool -m (interfacename) from expert mode, that should work on Maestro too.

[ItsTheFirewall]

Hi Tim, 

Thank you for responding. It does however it is missing the laser output power that other models provide. Here is the output of ethtool from my SMO::

Identifier : 0x0d (QSFP+)
Extended identifier : 0x00
Extended identifier description : 1.5W max. Power consumption
Extended identifier description : No CDR in TX, No CDR in RX
Extended identifier description : High Power Class (> 3.5 W) not enabled
Connector : 0x23 (No separable connector)
Transceiver codes : 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Transceiver type : 40G Ethernet: 40G Base-CR4
Encoding : 0x05 (64B/66B)
BR, Nominal : 14100Mbps
Rate identifier : 0x00
Length (SMF,km) : 0km
Length (OM3 50um) : 0m
Length (OM2 50um) : 0m
Length (OM1 62.5um) : 0m
Length (Copper or Active cable) : 3m
Transmitter technology : 0xa0 (Copper cable unequalized)
Attenuation at 2.5GHz : 6db
Attenuation at 5.0GHz : 10db
Attenuation at 7.0GHz : 13db
Attenuation at 12.9GHz : 0db
Vendor name : Mellanox
Vendor OUI : 00:02:c9
Vendor PN : 13B8NIY4454
Vendor rev : A3
Vendor SN : MT2126VS02461
Revision Compliance : SFF-8636 Rev 1.3 or earlier
Module temperature : 0.00 degrees C / 32.00 degrees F
Module voltage : 0.0000 V

[Timothy_Hall]

What does ethtool -i (interfacename) show?  It is possible that Mellanox/NVIDIA cards do not provide this information to ethtool like Intel does or there is an alternate command.

[ItsTheFirewall]

Ethtool -i shows the following info : 

driver: mlx5_core
version: 5.5-1.0.3 (07 Dec 21)
firmware-version: 12.22.1002 (CP_0010110027)
expansion-rom-version:
bus-info: 0000:86:00.1
supports-statistics: yes
supports-test: yes
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: yes

[Timothy_Hall]

Hmm it is indeed Mellanox/NVIDIA, the Intel-based cards expose the fiber statistical information to ethtool -m but it appears Mellanox/NVIDIA does not.  Did a quick search and I don't see a way to get this information (and I don't have one of these Mellanox fiber cards on hand to experiment with) so a TAC case is probably in order.

[emmap]

Are you looking for info about uplinks or downlinks? The SGMs are only going to get you full info about their downlink interfaces (the BP ones), you'll have to check on the MHO for uplink interface info. I think the command from the MHO is 'show maestro port [1/X/1 or whatever port you're after] optic-info'.

[frechtb]

On the MHO you can use this commands in expert-mode

mlxcables
mst status
mst cable add
mst status
mlxcables
mlxcables -d mt53100_pciconf0_cable_2 -DDM   
(cable number 2 is port number 3)