On Thu, 2 Dec 2010, Christopher Chan wrote: > On Thursday, December 02, 2010 03:28 AM, Steve Thompson wrote: >> On Wed, 1 Dec 2010, Timo Schoeler wrote: >> >>> Intel. Broadcom. That's what we use here w/o any issues; however, there >>> are some Intel NICs that are *not* able to handle Jumbo Frames due to an >>> internal design glitch. >> >> Seconded. I have a load of Intel 82576 and 82571EB's, and there have been >> no issues at all, including with Jumbo frames. > > Please take note that some Intel 1G nics do not have jumbo frame support > at all. So you won't have issues with jumbo frames either way. The > question is whether there is jumbo frame support. The Intel NICs that I mentioned, 82576 and 82571EB, are both in use in DRBD replication links with an MTU of 9000. We usually configure each such link as a point-to-point bonding pair (balance-rr), and get 1.95 Gb/s throughput with iperf, and about 165 MB/sec with drbd (but of course the latter is disk dependent). CentOS 5.5, x86_64, Dell PE2900 servers. Solid. Steve