Splitting Mellanox ConnectX-4 interface using breakout cables

[David Horn]

I was under the impression that these Mellanox 40G->4x10G breakout cables
were for the Mellanox switch side (not Mellanox NIC) to provide more
flexible utilization options for the switch.  I have never heard of doing
this from the 40G NIC (on any OS).

Please reply if you have seen this working on *any* OS from the Mellanox
40G NIC, as I am curious as well and have a both ConnectX-3 and -4 HW.

-Dave

On Wed, Sep 13, 2017 at 7:00 AM, Andrey V. Elsukov <bu7cher at yandex.ru>
wrote:

> Hi All,
>
> we are wondering, is it possible to use such configuration under
> FreeBSD? I.e. split one mce interface 40G => 4x10G or 100G => 4x25G?
>
> --
> WBR, Andrey V. Elsukov
>
>