Date: Wed, 13 Sep 2017 09:43:50 -0400 From: David Horn <dhorn2000@gmail.com> To: "Andrey V. Elsukov" <bu7cher@yandex.ru> Cc: freebsd-net@freebsd.org Subject: Re: Splitting Mellanox ConnectX-4 interface using breakout cables Message-ID: <CAG7Wopk7%2BFJe3e1Uu8hqiJzeJDSpc-9PxMJT77bSt=txgQ-YMw@mail.gmail.com> In-Reply-To: <c5774268-73b4-9874-b1c5-7296c94f0205@yandex.ru> References: <c5774268-73b4-9874-b1c5-7296c94f0205@yandex.ru>
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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@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 > >
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