The Linux kernel's network subsystem is starting to prepare for an 800Gbps Ethernet network. The IEEE-802 LAN/MAN Standards Committee has released the standard for 800Gbps networks, while NVIDIA continues to benefit from its acquisition of Mellanox IP and is developing 800Gbps ne

2025/06/2304:24:35 technology 1579

The network subsystem of the Linux kernel is starting to prepare for an 800Gbps Ethernet network. The IEEE-802 LAN/MAN Standards Committee has issued the standard for the 800Gbps network, while NVIDIA continues to benefit from its acquisition of Mellanox IP and is developing 800Gbps network hardware.

NVIDIA engineers working in Linux driver support have confirmed that their next generation NVIDIA Spectrum ASIC will indeed support 800 Gbps speeds.

Initially, Nvidia will use eight channels, each with 100Gbps, supporting 800Gbps speeds, and next step, they will study four channels, each with 200Gbps.

With the pull on net-next, NVIDIA has begun phased modifications to the 800Gbps network support of ethtool and their Mellanox "mlxsw" network driver. But so far it's just some basic 800Gbps related additions, but it's already confirmed that it's on the road to the main line, and it will be merged into Linux 6.2 with the selection this week by ne-next.

Although 800Gbps is already twice the bandwidth of the current highest-end 400Gbps network devices, the Ethernet Alliance's roadmap this year still takes the 1.6Tbit/s network as expected in the next few years.

Learn more:

https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=ea5ed0f00b07d5aba09189729d54751c98494f25

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