Request for ethtool dump - tracking the missing 40000baseLR4!

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mattaw

Member
Jul 30, 2018
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From it's specifications it looks like the dual qsfp connectx-3 has 3W qsfp support including LR4. From the firmware release notes 40gb support:
QSFP-40G-SR-BD
MC2210511-LR4

Some internet posts of ethtool run on this show supported link types of 40000baseLR4/Full. 56 GbE over a ConnectX-3 VPI adapter | Mellanox Interconnect Community

My card, cross flashed HP, 2.42.5000, doesn't show it in ethtool.

Bad flash or firmware update or only genuine cards have it?

If you are running a connect x3 qsfp can you post your firmware version and ethtool dump? Also any high power qsfp that worked (univ, bd, lr4...)

Thanks



Can someone post an ethtool <connectx-3> in this thread, along with firmware version and actual card brand?
 
Last edited:

fohdeesha

Kaini Industries
Nov 20, 2016
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fohdeesha.com
are you looking for 40gbase-LR4 or 40gbase-KR4? KR4 is an extremely limited backplane PHY protocol, like for 2 feet of pcb traces or less, usually used to get 40gb over a backplane connector in a chassis, nothing to do with LR4
 

mattaw

Member
Jul 30, 2018
62
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LR4, definitely. I made a mistake in the title. It won't let me report my own thread for a mod to change and it doesn't look like I can edit it anymore either. Thoughts?

[I got curious after our last thread and I enjoy fixing things, messing with firmware and in extreme cases breaking out the soldering iron.]
 

lambda

Member
Oct 27, 2018
34
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LR4, definitely. I made a mistake in the title. It won't let me report my own thread for a mod to change and it doesn't look like I can edit it anymore either. Thoughts?

[I got curious after our last thread and I enjoy fixing things, messing with firmware and in extreme cases breaking out the soldering iron.]
Just in case you want to try some inexpensive LR4 optics, I found this on eBay.
BRAND NEW ! KAIAM QSFP + - LR4 40GBASE XQX2100 | eBay
 
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mattaw

Member
Jul 30, 2018
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They are nice. I wondered if the LR4L would be lower power consumption? About the same price :
Arista QSFP-40G-LRL4-US (US Critical) 40GBase-IR4 QSFP+

Before I bought more shiny things, I was hoping someone could give me an answer on whether that the higher power optics would work in a crossflashed Connectx-3 card. I have another thread trying to get some Fiberstore BiDi's working which I failed at. The BiDi's also get very hot, the server needs a lot of airflow to support them (900 lfpm)
 
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mattaw

Member
Jul 30, 2018
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So the FS BiDi's didn't work (bear in mind they were purchased off eBay so may not have been good). I currently have 2x Arista programmed QSFP-40G-LRL4's installed in the card and they are working fine over about 22m of OM1! I guess the LR just pushes enough juice through the fiber to work. At some point I should pull some SMF to see if I can get the power down.
 
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jasonwc

Member
Dec 31, 2018
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In case anyone is interested, here's the DOM output for the $10 Kaiam 40G-LR4 Lite (2km) optic. I can confirm that this transceiver works in both a Brocade ICX6610 and in a ConnectX-3. Apparently, it will also work in the breakout ports on the ICX6610. The ICX6610 has two 40G ports and two fixed breakout ports. If you use the breakout ports, it will give you four independent 10G connections like you get with a 40G to 4 SFP+ DAC.

Code:
        Identifier                                : 0x0d (QSFP+)
        Extended identifier                       : 0x80
        Extended identifier description           : 2.5W 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                                 : 0x07 (LC)
        Transceiver codes                         : 0x02 0x00 0x00 0x00 0x00 0x00 0x00 0x00
        Transceiver type                          : 40G Ethernet: 40G Base-LR4
        Encoding                                  : 0x00 (unspecified)
        BR, Nominal                               : 10300Mbps
        Rate identifier                           : 0x00
        Length (SMF,km)                           : 2km
        Length (OM3 50um)                         : 0m
        Length (OM2 50um)                         : 0m
        Length (OM1 62.5um)                       : 0m
        Length (Copper or Active cable)           : 0m
        Transmitter technology                    : 0x40 (1310 nm DFB)
        Laser wavelength                          : 1310.000nm
        Laser wavelength tolerance                : 6.500nm
        Vendor name                               : KAIAM CORP
        Vendor OUI                                : 14:ed:e4
        Vendor PN                                 : XQX2502
        Vendor rev                                : 1A
        Vendor SN                                 : KD60629247
        Date code                                 : 16062900
        Revision Compliance                       : SFF-8636 Rev 1.5
        Module temperature                        : 47.21 degrees C / 116.99 degrees F
        Module voltage                            : 3.2447 V
        Alarm/warning flags implemented           : No
        Laser tx bias current (Channel 1)         : 45.616 mA
        Laser tx bias current (Channel 2)         : 39.090 mA
        Laser tx bias current (Channel 3)         : 41.232 mA
        Laser tx bias current (Channel 4)         : 40.022 mA
        Transmit avg optical power (Channel 1)    : 1.5032 mW / 1.77 dBm
        Transmit avg optical power (Channel 2)    : 1.5209 mW / 1.82 dBm
        Transmit avg optical power (Channel 3)    : 1.5084 mW / 1.79 dBm
        Transmit avg optical power (Channel 4)    : 1.5197 mW / 1.82 dBm
        Rcvr signal avg optical power(Channel 1)  : 0.8837 mW / -0.54 dBm
        Rcvr signal avg optical power(Channel 2)  : 0.8014 mW / -0.96 dBm
        Rcvr signal avg optical power(Channel 3)  : 0.6106 mW / -2.14 dBm
        Rcvr signal avg optical power(Channel 4)  : 0.5866 mW / -2.32 dBm
 
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tochnia

New Member
Mar 5, 2022
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In case anyone is interested, here's the DOM output for the $10 Kaiam 40G-LR4 Lite (2km) optic. I can confirm that this transceiver works in both a Brocade ICX6610 and in a ConnectX-3. Apparently, it will also work in the breakout ports on the ICX6610. The ICX6610 has two 40G ports and two fixed breakout ports. If you use the breakout ports, it will give you four independent 10G connections like you get with a 40G to 4 SFP+ DAC.

Code:
        Identifier                                : 0x0d (QSFP+)
        Extended identifier                       : 0x80
        Extended identifier description           : 2.5W 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                                 : 0x07 (LC)
        Transceiver codes                         : 0x02 0x00 0x00 0x00 0x00 0x00 0x00 0x00
        Transceiver type                          : 40G Ethernet: 40G Base-LR4
        Encoding                                  : 0x00 (unspecified)
        BR, Nominal                               : 10300Mbps
        Rate identifier                           : 0x00
        Length (SMF,km)                           : 2km
        Length (OM3 50um)                         : 0m
        Length (OM2 50um)                         : 0m
        Length (OM1 62.5um)                       : 0m
        Length (Copper or Active cable)           : 0m
        Transmitter technology                    : 0x40 (1310 nm DFB)
        Laser wavelength                          : 1310.000nm
        Laser wavelength tolerance                : 6.500nm
        Vendor name                               : KAIAM CORP
        Vendor OUI                                : 14:ed:e4
        Vendor PN                                 : XQX2502
        Vendor rev                                : 1A
        Vendor SN                                 : KD60629247
        Date code                                 : 16062900
        Revision Compliance                       : SFF-8636 Rev 1.5
        Module temperature                        : 47.21 degrees C / 116.99 degrees F
        Module voltage                            : 3.2447 V
        Alarm/warning flags implemented           : No
        Laser tx bias current (Channel 1)         : 45.616 mA
        Laser tx bias current (Channel 2)         : 39.090 mA
        Laser tx bias current (Channel 3)         : 41.232 mA
        Laser tx bias current (Channel 4)         : 40.022 mA
        Transmit avg optical power (Channel 1)    : 1.5032 mW / 1.77 dBm
        Transmit avg optical power (Channel 2)    : 1.5209 mW / 1.82 dBm
        Transmit avg optical power (Channel 3)    : 1.5084 mW / 1.79 dBm
        Transmit avg optical power (Channel 4)    : 1.5197 mW / 1.82 dBm
        Rcvr signal avg optical power(Channel 1)  : 0.8837 mW / -0.54 dBm
        Rcvr signal avg optical power(Channel 2)  : 0.8014 mW / -0.96 dBm
        Rcvr signal avg optical power(Channel 3)  : 0.6106 mW / -2.14 dBm
        Rcvr signal avg optical power(Channel 4)  : 0.5866 mW / -2.32 dBm
Which was model of ConnectX-3 which you used with Kaiam 40G-LR4 Lite?
Was it Pro or VPI?
Genuine Mellanox or cross flashed HP/Dell one?
 

jasonwc

Member
Dec 31, 2018
49
18
8
Which was model of ConnectX-3 which you used with Kaiam 40G-LR4 Lite?
Was it Pro or VPI?
Genuine Mellanox or cross flashed HP/Dell one?
It was a cross-flashed HP card: 649281-B21 HP Infiniband FDR/Ethernet 10Gb/40Gb 2-port 544QSFP Adapter 886111482092 | eBay

I used fohdeesha's instructions, which I've included below for flashing:

Code:
#Download latest FCBT firmware and unzip:

wget http://www.mellanox.com/downloads/firmware/fw-ConnectX3-rel-2_42_5000-MCX354A-FCB_A2-A5-FlexBoot-3.4.752.bin.zip

unzip fw-ConnectX3-rel-2_42_5000-MCX354A-FCB_A2-A5-FlexBoot-3.4.752.bin.zip



#Backup the cards current board definition file just in case

flint -d /dev/mst/mt4099_pci_cr0 dc orig_firmware.ini



#Flash the FCBT image to the card

flint -d /dev/mst/mt4099_pci_cr0 -i fw-ConnectX3-rel-2_42_5000-MCX354A-FCB_A2-A5-FlexBoot-3.4.752.bin -allow_psid_change burn



Cold boot the server when done



#start mst service again

mst start



#get detailed firmware info

mlxfwmanager --query



#get the device ID again:

mst status



#use it to see the cards current configuration:

mlxconfig -d /dev/mst/mt4099_pci_cr0 query



use it in config commands to configure the card

#for instance, to turn both ports from VPI/Auto to Ethernet only:

mlxconfig -d /dev/mst/mt4099_pci_cr0 set LINK_TYPE_P1=2 LINK_TYPE_P2=2





#turn off bootrom crap

mlxconfig -d /dev/mst/mt4099_pci_cr0 set BOOT_OPTION_ROM_EN_P1=false

mlxconfig -d /dev/mst/mt4099_pci_cr0 set BOOT_OPTION_ROM_EN_P2=false

mlxconfig -d /dev/mst/mt4099_pci_cr0 set LEGACY_BOOT_PROTOCOL_P1=0

mlxconfig -d /dev/mst/mt4099_pci_cr0 set LEGACY_BOOT_PROTOCOL_P2=0





##optional: delete bootrom off the card, so it doesn't slow down boot by popping up crap

##this is safe to do and supported by mellanox

flint -d /dev/mst/mt4099_pci_cr0 --allow_rom_change drom
 
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dougg

New Member
Aug 4, 2023
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I don't mean to necro this post, but did anyone else have any luck getting QSFP-40G-LR4 transceivers to work? I bought some Arista Compatible osioptics QSFP-40G-LRL4 40G Transceiver, Up To 2km | eBay on ebay but when I plugged them into my ConnectX3 (MCX354A-FCBT) it doesn't recognize them (either on Windows 11 or TrueNAS Scale). I have my ConnectX3 with the latest firmware (2.42.5000) with both ports set to Eth, but still no luck. Thanks for the help!
 

klui

Well-Known Member
Feb 3, 2019
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While I don't have Arista 40G LR4Ls, their QSFP-100G-CWDM4s work in a CX3. CWDM optics tend to require SMF with some exceptions, so ensure you're using the right type of cable.

Code:
root@X9DRi:~# ethtool enp5s0
Settings for enp5s0:
        Supported ports: [ FIBRE ]
        Supported link modes:   10000baseKX4/Full
                                40000baseCR4/Full
                                40000baseSR4/Full
                                56000baseCR4/Full
                                56000baseSR4/Full
                                1000baseX/Full
                                10000baseCR/Full
                                10000baseSR/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  10000baseKX4/Full
                                40000baseCR4/Full
                                40000baseSR4/Full
                                1000baseX/Full
                                10000baseCR/Full
                                10000baseSR/Full
        Advertised pause frame use: Symmetric
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Speed: 40000Mb/s
        Duplex: Full
        Port: FIBRE
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: off
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000014 (20)
                               link ifdown
        Link detected: yes
root@X9DRi:~# ethtool -m enp5s0
        Identifier                                : 0x11 (QSFP28)
        Extended identifier                       : 0xcc
        Extended identifier description           : 3.5W max. Power consumption
        Extended identifier description           : CDR present in TX, CDR present in RX
        Extended identifier description           : High Power Class (> 3.5 W) not enabled
        Connector                                 : 0x07 (LC)
        Transceiver codes                         : 0x80 0x00 0x00 0x00 0x00 0x00 0x00 0x00
        Transceiver type                          : 100G Ethernet: 100G CWDM4 MSA with FEC
        Encoding                                  : 0x07 ((256B/257B (transcoded FEC-enabled data))
        BR, Nominal                               : 25500Mbps
        Rate identifier                           : 0x02
        Length (SMF,km)                           : 2km
        Length (OM3 50um)                         : 0m
        Length (OM2 50um)                         : 0m
        Length (OM1 62.5um)                       : 0m
        Length (Copper or Active cable)           : 0m
        Transmitter technology                    : 0x40 (1310 nm DFB)
        Laser wavelength                          : 1310.000nm
        Laser wavelength tolerance                : 65.000nm
        Vendor name                               : Arista Networks
        Vendor OUI                                : 00:1c:73
        Vendor PN                                 : QSFP-100G-CWDM4
        Vendor rev                                : 20
        Vendor SN                                 : XLA---------
        Date code                                 : 170327
        Revision Compliance                       : SFF-8636 Rev 2.5/2.6/2.7
        Module temperature                        : 54.72 degrees C / 130.49 degrees F
        Module voltage                            : 3.1993 V
        Alarm/warning flags implemented           : No
        Laser tx bias current (Channel 1)         : 47.760 mA
        Laser tx bias current (Channel 2)         : 44.042 mA
        Laser tx bias current (Channel 3)         : 45.626 mA
        Laser tx bias current (Channel 4)         : 43.510 mA
        Transmit avg optical power (Channel 1)    : 1.1646 mW / 0.66 dBm
        Transmit avg optical power (Channel 2)    : 1.1661 mW / 0.67 dBm
        Transmit avg optical power (Channel 3)    : 1.3618 mW / 1.34 dBm
        Transmit avg optical power (Channel 4)    : 1.3533 mW / 1.31 dBm
        Rcvr signal avg optical power(Channel 1)  : 0.9239 mW / -0.34 dBm
        Rcvr signal avg optical power(Channel 2)  : 0.7495 mW / -1.25 dBm
        Rcvr signal avg optical power(Channel 3)  : 0.9121 mW / -0.40 dBm
        Rcvr signal avg optical power(Channel 4)  : 0.9521 mW / -0.21 dBm
 

dougg

New Member
Aug 4, 2023
7
1
3
Klui,
Thanks for the reply. I have SMF and a LC transceiver tester ( Amazon.com: Comm cable LC Fiber Optic Loopback Adapter - LC Singlemode 9/125 Tester Adapter - Blue : Industrial & Scientific). The transceivers work when I plug them into an Arista switch with the loopback adapter; green lights turn on/etc... From the ethtool output I didn't think LR4 was supported since it's not listed in the link modes and/or in the CX3 specification docs.

Code:
root@truenas:~# ethtool enp132s0
Settings for enp132s0:
        Supported ports: [ FIBRE ]
        Supported link modes:   10000baseKX4/Full
                                40000baseCR4/Full
                                40000baseSR4/Full
                                56000baseCR4/Full
                                56000baseSR4/Full
                                1000baseX/Full
                                10000baseCR/Full
                                10000baseSR/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  10000baseKX4/Full
                                40000baseCR4/Full
                                40000baseSR4/Full
                                1000baseX/Full
                                10000baseCR/Full
                                10000baseSR/Full
        Advertised pause frame use: Symmetric
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Speed: Unknown!
        Duplex: Unknown! (255)
        Auto-negotiation: off
        Port: FIBRE
        PHYAD: 0
        Transceiver: internal
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000014 (20)
                               link ifdown
        Link detected: no
Interesting... it looks like it is detected from the ethtool -m command:

Code:
root@truenas:~# ethtool -m enp132s0
        Identifier                                : 0x0d (QSFP+)
        Extended identifier                       : 0xd0
        Extended identifier description           : 3.5W 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                                 : 0x07 (LC)
        Transceiver codes                         : 0x02 0x00 0x00 0x00 0x10 0x00 0x00 0x00
        Transceiver type                          : 40G Ethernet: 40G Base-LR4
        Transceiver type                          : FC: long distance (L)
        Encoding                                  : 0x05 (64B/66B)
        BR, Nominal                               : 10300Mbps
        Rate identifier                           : 0x00
        Length (SMF,km)                           : 2km
        Length (OM3 50um)                         : 0m
        Length (OM2 50um)                         : 0m
        Length (OM1 62.5um)                       : 0m
        Length (Copper or Active cable)           : 0m
        Transmitter technology                    : 0x40 (1310 nm DFB)
        Laser wavelength                          : 1310.000nm
        Laser wavelength tolerance                : 6.500nm
        Vendor name                               : Arista Networks
        Vendor OUI                                : 00:90:65
        Vendor PN                                 : QSFP-40G-LRL4OSI
        Vendor rev                                : B
        Vendor SN                                 : ACB1702070228
        Date code                                 : 170209
        Revision Compliance                       : Revision not specified
        Module temperature                        : 56.48 degrees C / 133.66 degrees F
        Module voltage                            : 3.2468 V
        Alarm/warning flags implemented           : No
        Laser tx bias current (Channel 1)         : 36.020 mA
        Laser tx bias current (Channel 2)         : 42.574 mA
        Laser tx bias current (Channel 3)         : 17.456 mA
        Laser tx bias current (Channel 4)         : 29.000 mA
        Transmit avg optical power (Channel 1)    : 0.9590 mW / -0.18 dBm
        Transmit avg optical power (Channel 2)    : 1.1880 mW / 0.75 dBm
        Transmit avg optical power (Channel 3)    : 0.9075 mW / -0.42 dBm
        Transmit avg optical power (Channel 4)    : 0.9095 mW / -0.41 dBm
        Rcvr signal avg optical power(Channel 1)  : 1.2790 mW / 1.07 dBm
        Rcvr signal avg optical power(Channel 2)  : 1.5540 mW / 1.91 dBm
        Rcvr signal avg optical power(Channel 3)  : 0.9820 mW / -0.08 dBm
        Rcvr signal avg optical power(Channel 4)  : 0.9370 mW / -0.28 dBm
Looking at the logs, it thinks the link is down too:


Code:
root@truenas:~# grep "^Aug 11.*mlx\|^Aug 11.*enp132" /var/log/syslog
Aug 11 13:02:29 truenas kernel: mlx4_core: Mellanox ConnectX core driver v4.0-0
Aug 11 13:02:29 truenas kernel: mlx4_core: Initializing 0000:84:00.0
Aug 11 13:02:30 truenas kernel: mlx4_core 0000:84:00.0: DMFS high rate steer mode is: disabled performance optimized steering
Aug 11 13:02:30 truenas kernel: mlx4_core 0000:84:00.0: 63.008 Gb/s available PCIe bandwidth (8.0 GT/s PCIe x8 link)
Aug 11 13:02:30 truenas kernel: mlx4_en: Mellanox ConnectX HCA Ethernet driver v4.0-0
Aug 11 13:02:30 truenas kernel: mlx4_en 0000:84:00.0: Activating port:1
Aug 11 13:02:30 truenas kernel: mlx4_en: 0000:84:00.0: Port 1: Using 32 TX rings
Aug 11 13:02:30 truenas kernel: mlx4_en: 0000:84:00.0: Port 1: Using 16 RX rings
Aug 11 13:02:30 truenas kernel: mlx4_en: 0000:84:00.0: Port 1: Initializing port
Aug 11 13:02:30 truenas kernel: mlx4_en 0000:84:00.0: registered PHC clock
Aug 11 13:02:30 truenas kernel: <mlx4_ib> mlx4_ib_add: mlx4_ib: Mellanox ConnectX InfiniBand driver v4.0-0
Aug 11 13:02:30 truenas kernel: <mlx4_ib> mlx4_ib_add: counter index 2 for port 1 allocated 1
Aug 11 13:02:30 truenas kernel: <mlx4_ib> mlx4_ib_add: counter index 1 for port 2 allocated 0
Aug 11 13:02:30 truenas kernel: mlx4_core 0000:84:00.0 enp132s0: renamed from eth4
Aug 11 13:02:59 truenas kernel: mlx4_en: enp132s0: Steering Mode 1
Aug 11 13:02:59 truenas kernel: mlx4_en: enp132s0: Link Down
Anything else to check/try? Thanks for your help!
 

dougg

New Member
Aug 4, 2023
7
1
3
I was only using a switch to verify the transceivers worked. I'll eventually do a direct connection from my windows computer to my server over 30m of fiber (ConnectX3 to ConnectX3). I wanted an LC transceiver since armored LC single mode fiber was cheaper than MPO fiber, but I guess I'll have to look for a lower powered option (1.5W) unless there is a firmware hack that can increase the ConnectX3 to 3.5W per QSFP port? Thanks for your help!
 

klui

Well-Known Member
Feb 3, 2019
824
453
63
I spent a little time looking at how to enable high power optics using ethtool just on the NIC but couldn't find it. My guess is it's only possible through a switch. Anyone else who knows please share.
 

dougg

New Member
Aug 4, 2023
7
1
3
Klui,
Regarding your previous post, are you saying that the QSFP-100G-CWDM4s will work at 40Gbps in the CX3? if so, I might just buy a couple of those since they are <$10 on ebay.
 

NablaSquaredG

Layer 1 Magician
Aug 17, 2020
1,320
800
113
Klui,
Regarding your previous post, are you saying that the QSFP-100G-CWDM4s will work at 40Gbps in the CX3? if so, I might just buy a couple of those since they are <$10 on ebay.
As far as I remember, ConnectX-3 worked fine, but ConnectX-4 and above only accepted Mellanox coded 100G optics to run at 40G (which is a bit unfortunate, because you cannot reprogram the Intel ones (they have a password and bruteforcing the password on those transceivers is pretty slow, only about 300pws / sec, usually you get around 3000/sec). I have yet to test the Finisar, Colorchip and Innolight ones for passwords & bruteforcing...
 
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dougg

New Member
Aug 4, 2023
7
1
3
As far as I remember, ConnectX-3 worked fine, but ConnectX-4 and above only accepted Mellanox coded 100G optics to run at 40G (which is a bit unfortunate, because you cannot reprogram the Intel ones (they have a password and bruteforcing the password on those transceivers is pretty slow, only about 300pws / sec, usually you get around 3000/sec). I have yet to test the Finisar, Colorchip and Innolight ones for passwords & bruteforcing...
That's interesting, how do you check to see if the transceiver has a password/how do you bruteforce the password?
 

NablaSquaredG

Layer 1 Magician
Aug 17, 2020
1,320
800
113
That's interesting, how do you check to see if the transceiver has a password
Write new contents to the EEPROM (like serial number etc) -> Read -> Changed / equivalent to what you wrote? No Password. Unchanged? Password.

how do you bruteforce the password?
 
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