Does Mellanox/Nvidia ConnectX-3 support any other speedds tha 1gb and 10gb in EN mode?
- Thread starter Poliisi5
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Let me show you how to answer it yourself: linux/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c at 872459663c52f5e8a28c0cb6df08b77d6c24ab46 · torvalds/linux
For such questions I like to consult the Linux drivers, because they are open source. You have to bring some knowledge about the card though. Like, mlx4 being the correct driver for connectx3, also steering right into any file that has "ethtool" in the name, because ethtool will need this info for display and setup.
As you can see, the twisted-pair cards appear to support 100/1000/10000 Mbps, fiber cards (SFP+, QSFP+) 1000/10000/40000/56000. The backplane modes like KR4 are rather fringe and can be ignored.
For such questions I like to consult the Linux drivers, because they are open source. You have to bring some knowledge about the card though. Like, mlx4 being the correct driver for connectx3, also steering right into any file that has "ethtool" in the name, because ethtool will need this info for display and setup.
As you can see, the twisted-pair cards appear to support 100/1000/10000 Mbps, fiber cards (SFP+, QSFP+) 1000/10000/40000/56000. The backplane modes like KR4 are rather fringe and can be ignored.
Not by itself, no. There are a few models of SPF+ transceivers that can add 2.5 and 5 Gbase-T to devices that only support 1G and 10G.
Remember that those slower standards are fairly new, which is why a lot of older enterprise NICs don't support them. Basically, if it isn't explicitly listed in the specifications you can be pretty sure it doesn't.
Remember that those slower standards are fairly new, which is why a lot of older enterprise NICs don't support them. Basically, if it isn't explicitly listed in the specifications you can be pretty sure it doesn't.
Not a stupid question at all. And 2.5/5G is on uptrend because more and more ISPs are rolling out FTTH. High-speed wifi access points also profit from it.
As an aside, one curious tidbit to ponder is the age of gigabit ethernet vis-a-vis the jump in performance it made. Will be 25 years old in 2024. Still, gigabit is good enough for even the most bitrate-heavy streaming at home and 99.9% of office use cases. Rare to find tech that has aged that well unchanged.
As an aside, one curious tidbit to ponder is the age of gigabit ethernet vis-a-vis the jump in performance it made. Will be 25 years old in 2024. Still, gigabit is good enough for even the most bitrate-heavy streaming at home and 99.9% of office use cases. Rare to find tech that has aged that well unchanged.
