Date: Wed, 19 Jan 2000 14:18:47 -0500 (EST) From: Vinod Balakrishnan <vkb3q@cs.virginia.edu> To: freebsd-net@FreeBSD.ORG Cc: Koos de Haan <sdehaan@caiw.nl> Subject: de device driver problems with ZNYX 4 port 100mbps cards Message-ID: <Pine.GSO.4.05.10001191408100.1955-100000@cobra.cs.Virginia.EDU> In-Reply-To: <v03130301b486274d8fc8@192.168.8.115>
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hi, I had posted a message a few weeks ago reporting some problems I have been facing with the ZNYX 4 port (100Mbps) cards used with the de device driver. And apparently I am not alone. Koos de Haan is also facing the same problems. It seems like the de device driver is unable to configure the znyx 4 port cards in 100Mbps full-duplex mode. So could someone please suggest what can be done ? Is work being done to fix this problem ? thanks -Vinod > Hi, > > We also use the same ZNYX cards in some boxes and experiencing the same problems. (I didn't get any TCP througput above approx 40 Mbit/s ever.) > NetBSD which is using the same driver also is suffering from the same problem. > Under Linux the cards work fine, but thats another driver. > > I think it is some bug in the de driver which causes these problems. I will get the driver form ZNYX a try on my 3.4-STABLE system to see wat will happen. > > Regards, > > > Koos de Haan > > > Op 03:02 +0100 22-12-1999, Vinod Balakrishnan schreef: > > > hi, > > > > I am working on a 6 pc test bed (FreeBSD boxes) having the > > 4 port 100Mbps 21140A Znyx cards. > > > > I am running FreeBSD 3.1-Release. I have also tested it on FreeBSD > > 3.0-Stable. > > > > I am facing a few problems with the device driver de. > > > > 1. netstat -I <interface> gives lots of output errors. > > Name Mtu Network Address Ipkts Ierrs Opkts Oerrs > > Coll > > de3 1500 10.0.8/24 10.0.8.5 434417 0 290242 289158 > > 0 > > > > If I use the device driver provided at the ZNYX website (znyx.com) zxe > > then I do not see any Oerrs. > > > > 2. ifconfig de3 mediaopt full-duplex , returns an error: > > ifconfig:SIOCSIFMEDIA: Device not configured > > > > 3. The throughput of a TCP flow from one FreeBSD box to another (each > > having a ZNYX card) varies with the packet size. > > For instance for a packet size of 150bytes I achieve 90Mbps. > > For packetsize of 500bytes it is only 60-70Mbps. > > > > 4. If I run a tcp flow from one FreeBSD box to another via an intermediate > > FreeBSD box (all having the ZNYX344 card and de device driver) I get a > > throughput of 40Mbps only for 500 byte packets. > > > > > > All of these above problems are not visible when I use the zxe > > device driver. > > > > thank you for your time, > > > > -Vinod > > > > > > Kabelfoon BV > Industriestraat 30, Postbus 45, 2670 AA NAALDWIJK > e-mail info@kabelfoon.nl voor informatie, kabelfoon@kabelfoon.nl voor abonnementszaken, help@kabelfoon.nl voor de helpdesk > Homepage : http://www.kabelfoon.nl/ > Zie http://www.kabelfoon.nl/pgp/ voor Kabelfoon public keys > > > *********************************************************************** B. Vinod Kumar Dept. of Computer Science, University of Virginia, Charlottesville To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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