From owner-freebsd-net Wed Jan 19 11:19:13 2000 Delivered-To: freebsd-net@freebsd.org Received: from ares.cs.Virginia.EDU (ares.cs.Virginia.EDU [128.143.136.41]) by hub.freebsd.org (Postfix) with ESMTP id 915D41553A for ; Wed, 19 Jan 2000 11:18:56 -0800 (PST) (envelope-from vkb3q@cs.virginia.edu) Received: from cobra.cs.Virginia.EDU (cobra.cs.Virginia.EDU [128.143.137.16]) by ares.cs.Virginia.EDU (8.9.2/8.9.2/UVACS-2000011700) with ESMTP id OAA15544; Wed, 19 Jan 2000 14:18:48 -0500 (EST) Received: from localhost (vkb3q@localhost) by cobra.cs.Virginia.EDU (8.9.2/8.9.2) with ESMTP id OAA02234; Wed, 19 Jan 2000 14:18:47 -0500 (EST) X-Authentication-Warning: cobra.cs.Virginia.EDU: vkb3q owned process doing -bs Date: Wed, 19 Jan 2000 14:18:47 -0500 (EST) From: Vinod Balakrishnan To: freebsd-net@FreeBSD.ORG Cc: Koos de Haan Subject: de device driver problems with ZNYX 4 port 100mbps cards In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org 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 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