Switchless FreeBSD/Ubuntu "eth" mode

Oded Shanoon odeds at mellanox.com
Thu Aug 20 06:34:23 UTC 2015

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? 


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?

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