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From: Kevin Bowling <kevin.bowling@kev009.com>
Subject: Re: FreeBSD 10 - ixgbe packet drop
Date: Fri, 06 Jun 2014 00:17:56 -0700
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On 6/4/2014 11:46 PM, Özkan KIRIK wrote:
> Hi
>
> I'm using FreeBSD 10.
> My ix0 is connected to my backbone switch.
> Traffic is about 90Mbit/s.
> But after 3 minutes it stops working.
> ifconfig ix0 down ; ifconfig ix0 up solves problem temprorarily.
>
> It's strange that, dev.ix.0.dropped is 0 but, netstat's Idrop counter is
> growing.
> How can i debug this situation?


> dev.ix.0.mac_stats.local_faults: 33864
> dev.ix.0.mac_stats.remote_faults: 18168

These faults look similar to a problem I have with the X520 using copper 
twinax cables.

What is your physical topology including cabling type?