I see there is a Mellanox log in the winodws event logs. Is that where I would find power levels?could be lack of power? can you see anything in logs?
It's Dell re-flashed to generic Mellanox.Is the card using generic Mellanox or an OEM firmware? I seem to remember seeing someone else on here having issues with vendor locking on transceivers on his OEM NIC before flashing the generic Mellanox firnware.
You can probably figure that out from the PSID.
NOTE: I'm just guessing here. Could definitely be something else.
I'm not sure if they are compatible or not, that's why I'm posing the issue here Hoping those more experienced with Mellanox than I have an answer. Mellanox lists the card as able to use SFP+ and SFP28.U sure those work in cards? I've ever only seen them on the switch end.
Also the MCX4121A-ACAT is a 25g card - u forced it to 10g?
Good. That shouldn't be an issue then.It's Dell re-flashed to generic Mellanox.
I'm fairly sure they are supposed to work in NICs too.U sure those work in cards? I've ever only seen them on the switch end.
Could you try live booting a Linux distro like Ubuntu or Debian and see if it behaves differently? At the same time, you could collect and paste the output of "sudo ethtool -m [interface_name]" here.I'm not sure if they are compatible or not, that's why I'm posing the issue here Hoping those more experienced with Mellanox than I have an answer. Mellanox lists the card as able to use SFP+ and SFP28.
MLX5CMD indicates the below, so it seems to recognize it, but windows still shows the cable unplugged.
Is there a tutorial somewhere for how to do that?TL;DR try to change the transceiver programming to have Mellanox OUI
Interesting. I'm curious to see if it is a brand lock thing or something else. I have a 10gbaseT model that claims to be coded for Mellanox on the way for testing.I just tried out a few 10GBaseT modules (including a 6COM) in my MCX416A-CCAT with a QSA28 adapter and none would make a link to 10G or 1G network ports, though a SFP+ DAC worked fine. Good thing I didn't expect to run my 100G cards over CAT6.
DACs are vendor coded. Some NIC vendors don't enforce their vendor locks on DACs though from what I've been told, only on fiber (and possibly 10GBase-T) transceivers.I have the same cards in two servers running on DAC's to my switch. Are DAC's not vendor coded?
If you are using one of the fs.com 10GbE SFP+ units that also links at 5/2.5/1GbE, be wary. I've had nothing but trouble with the ethernet performance at 1Gbps (lots of errors) and there also seem to be buffering issues.Other weirdness, it shows that it is connected at 10g to a gigabit desktop switch... lol
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