Switchless FreeBSD/Ubuntu "eth" mode

Jonathan Wong jon.the.wong at gmail.com
Thu Aug 20 07:50:31 UTC 2015

The cards were dual port ConnectX 3 cards. I managed to resolve the error
which appears to be a routing related issue because of the way I wired the
switchless setup.


On Wed, Aug 19, 2015 at 11:18 PM, Oded Shanoon <odeds at mellanox.com> wrote:

> What do you mean by Eth mode?
> The Mellanox Ethernet driver (which produces the mlxen interfaces) is
> working on FreeBSD.
> What kind of cards do you have?
> Which FreeBSD version and Mellanox driver are you using?
> Regards,
> Oded Shanoon
> OFED-FreeBSD Team Leader
> Mellanox Technologies, Raanana
> -----Original Message-----
> From: owner-freebsd-infiniband at freebsd.org [mailto:
> owner-freebsd-infiniband at freebsd.org] On Behalf Of Jonathan Wong
> Sent: Thursday, August 20, 2015 4:46 AM
> To: freebsd-infiniband at freebsd.org
> Subject: Switchless FreeBSD/Ubuntu "eth" mode
> I've been able to get ipoib working in "ib" mode between a FreeBSD and
> Ubuntu machine. The machines are directly connected without a switch, so in
> "ib" mode I run SMs. I've been able to ping and transfer files over the ib
> interfaces via static ip addresses I've statically defined.
> In "eth" mode, I can't seem to get the machines connected or ping either
> machine using static ip addresses I've assigned to the interfaces. "ibstat"
> shows that at least one set of interfaces is up. tcpdump on mlxen0, and
> mlxen1 (freebsd) and eth1 (ubuntu) show outgoing ARP requests when
> pinging, but no replies.
> Is there a utility to debug whether eth mode is working in a switchless
> configuration?
> Thanks
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