[TriLUG] CentOS 6 with kernel v3 - bonding interface drops

[Ron Kelley via TriLUG]

Greetings all,

Running a couple of backup servers with CentOS6 with two 10G bonded NICs.  If I boot a v3 kernel (3.14, 3.19, etc), I see a ton of dropped packets on my bonded interface.  I tried various flavors of bonding to pinpoint the issue (mode-1, mode-6, etc), and all show the same drops. However, if I drop back to the standard CentOS 6 kernel (2.6.32) I don’t see the same behavior.  

While there are some google hits, nothing stands out as obvious.  I am wondering if the drop counter is inaccurate in the v3 kernel?

Was wondering if anyone else saw the same issue…

Thanks for any pointers.

-Ron