Date: Fri, 21 Feb 2003 10:56:08 -0700 From: "Brent Wiese" <brently@bjwcs.com> To: "'Joseph Noonan'" <jfn@msc.com> Cc: <freebsd-questions@FreeBSD.ORG> Subject: RE: Bizarre Networking Problem Message-ID: <002501c2d9d2$8392f100$0a0114ac@home.bjwcs.com> In-Reply-To: <20030221105259.Y87091@pcjfn.msc.com>
next in thread | previous in thread | raw e-mail | index | archive | help
> Well the problem is solved, but I am not happy about the > solution as it makes absolutely no sense to me. > > xl0: > flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 > options=3<rxcsum,txcsum> > inet 192.246.38.10 netmask 0xffffff00 broadcast 255.255.255.0 > inet 208.23.240.10 netmask 0xffffff00 broadcast 208.23.240.255 > ether 00:04:75:b0:24:12 > media: Ethernet autoselect (100baseTX <full-duplex>) > status: active > Your nic is set autosense. While probably not the only culprit, if you can manage your 3com switch, hard set the port and your NIC to 100 full duplex. It may not solve the problem, but its one more variable eliminated. I was running a HP 4000M and all the machines set auto. I did a code upgrade on the switch and all of sudden performance went in the gutter because, for some reason, autosense "broke". Once I hard set 100fd on everything, performance was once again stellar. The broadcast for 192.246.38.10 is wrong too. You shouldn't have to run in promiscous mode to solve this... Doing so is going to kill your CPU when traffic gets high. Brent To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?002501c2d9d2$8392f100$0a0114ac>