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Date: Fri, 2 Sep 2016 13:02:03 +0300
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Hans Petter Selasky <hps@selasky.org>
Cc: freebsd-net@FreeBSD.org, Meny Yossefi <menyy@mellanox.com>,
 Oded Shanoon <odeds@mellanox.com>
Subject: Re: 60G+ network connection
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On Fri, Sep 02, 2016 at 11:44:20AM +0200, Hans Petter Selasky wrote:

> On 09/02/16 11:31, Slawa Olhovchenkov wrote:
> > On Fri, Sep 02, 2016 at 09:37:25AM +0200, Hans Petter Selasky wrote:
> >
> >> On 09/01/16 23:18, Slawa Olhovchenkov wrote:
> >>> What hardware (NIC) recomended for 60G+ network speed?
> >>>
> >>> Chelsio limited to 54Gbit/s
> >>> Melanox don't available new drivers for ConnectX-5 and need too
> >>> expensive transmiters and connectivity.
> >>> Melanox don't available new drivers for ConnectX-4 Lx and also limited
> >>> to 54Gbit/s
> >>> Intel XL710 also limited to 54Gbit/s
> >>>
> >>> What I am miss?
> >>
> >> Hi,
> >>
> >> Mellanox has drivers in sys/dev/mlx5 for CX-4 which support 100GBit/s
> >> speeds.
> >
> > can you some clarification?
> > what relation between cx-4 and ConnectX®-4 Lx EN?
> 
> Hi,
> 
> The LX series has lower throughput and is cheaper. You'll need the 
> regular CX-4 if you want to do 100GBit/s. Meny, correct me if I'm wrong.

Ah, I am wrong, see LX limited to 54G.
As I see only CX-4 with QSFP28 available, no QSFP+?
I think cable QSFP28-QSFP+ don't exist?

> > Is the same?
> >
> > PS: 100G transmiters and connectiveti too expensive, 2x40G prefer.
> 
> You can put 2x 40GBit/s modules in the CX-4. I'm not sure if you can 
> combine 2x 40GBit/s into a single 80GBit/s.

I can do it by if_lagg.