Date: Wed, 25 Apr 2001 11:14:53 -0500 From: "Guy Helmer" <ghelmer@palisadesys.com> To: <jf@trispen.com>, <freebsd-hackers@freebsd.org> Subject: RE: if_dc and bridging Message-ID: <IIEMKPDDELBAEMJFGFHIKEDICAAA.ghelmer@palisadesys.com> In-Reply-To: <20010425175300.A15616@brolloks.trispen.com>
next in thread | previous in thread | raw e-mail | index | archive | help
FWIW, we have seen similar problems (poor throughput, TX underrun, and watchdog timeouts) with plain TCP (not bridging) on systems with built-in Davicom DM9102 devices running FreeBSD 4.0 and 4.2. Reboot improves the performance for a while. There seems to be a few problems with the Davicom chip... Guy Helmer, Ph.D. http://www.palisadesys.com/~ghelmer/ Sr. Software Engineer, Palisade Systems ghelmer@palisadesys.com > -----Original Message----- > From: owner-freebsd-hackers@FreeBSD.ORG > [mailto:owner-freebsd-hackers@FreeBSD.ORG]On Behalf Of Jacques Fourie > Sent: Wednesday, April 25, 2001 10:53 AM > To: freebsd-hackers@FreeBSD.ORG > Subject: if_dc and bridging > > > When doing bridging (Luigi's standard bridging code) using two Davicom > DM9102A NIC's, I am seeing some strange results. > > If I do a 'ping -s 8000' between two PC's sitting on either side > of the bridge, > I see a whole bunch of TX underrun errors on both NIC's of the bridge. > Eventually both are put into store and forward mode. > After this, I can hardly get any traffic through the bridge at all > (maximum throughput I have seen is around 1kB/s). After a reboot, > everything > is OK again. > > Does anyone have any idea what is going on? (The bridge is running > 4.2-RELEASE) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?IIEMKPDDELBAEMJFGFHIKEDICAAA.ghelmer>