Date: Sat, 15 Feb 2014 13:14:16 -0700 From: Kevin Bowling <kevin.bowling@kev009.com> To: freebsd-net@freebsd.org Subject: FreeBSD 10 network flapping, ix driver unreliable? Message-ID: <ldohqb$s2c$1@ger.gmane.org>
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Hi, I have FreeBSD 10.0-RELEASE installed on two Dell C6100 nodes. Each node has an Intel X520-DA2 dual port 10gig card. One of the ports on each go to a switch using direct attach coaxial cables. The other port is directly connected between the two nodes (think crossover in twisted pair terminology) again using direct attach coaxial cables. On both machines, and on both ports (including the "crossover"), the links flap several times per day. I've pasted the output of lspci -vv and dmesg here: https://gist.github.com/kev009/9024442 There's nothing outstanding about the setup otherwise. I suspected some interaction with the switch initially but the "crossover" has eliminated that suspicion. It seems the ix driver is not very reliable under common conditions, i.e. https://forums.freebsd.org/viewtopic.php?f=7&t=44570 and a search of this list. Any recommendations or tests? Regards, Kevin Bowling
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