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zkrr01

Member
Jun 28, 2018
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I have two Mellanox 40GbE Cx4131A-BCAT ConnectX-4 LX NIC's direct connect in my workstations. I see the same specifications shown on the internet as being 40/56 GbE. Why is the same CX4131A-BCAT cards shown in some places as 40GbE and other places as 40/56GbE? Could it a firmware option?
 

i386

Well-Known Member
Mar 18, 2016
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Germany
56gbe is a proprietary ethernet Implementation from mellanox.
Without mellanox switches (or host to Host) you can use only 40gbe.
 

zkrr01

Member
Jun 28, 2018
106
6
18
I am doing host to host, so how do I do 56GbE?

I found the posting, but it only pertains to ConnectX-3 and I have ConnectX-4 so it looks like it cannot be done.
 
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