On Tue, Jan 09, 2007 at 10:39:18PM +0000, Thomas E. Spanjaard wrote: > Joe Talbott wrote: > >I'm experiencing some slight packet loss on the re0 interface. > > > >500 packets transmitted, 492 packets received, 1% packet loss > >round-trip min/avg/max/stddev = 13.094/17.556/989.262/54.944 ms > > > >I ran a second ping test from another DragonFlyBSD machine on the same > >switch. Both pings were to the same google server. I'm sure this > >will be hard to diagnose. Please let me know if there is anything I > >can do to glean more information. > > Pinging outside your LAN introduces so many other variables that the > results can't be used to point to re(4); please test only on your LAN to > eliminate most of the other variables. E.g., use ttcp or iperf to test > performance/loss.
I couldn't get ttcp or iperf on the LAN only to exhibit this problem. >From a discussion on one of the FreeBSD mailing lists this seems to be an issue with re(4) TX checksum hardware offloading. The following command fixes this problem for me. ifconfig re0 -txcsum Joe
