Date: Tue, 21 Dec 1999 21:02:51 -0500 (EST) From: Vinod Balakrishnan <vkb3q@cs.virginia.edu> To: freebsd-stable@FreeBSD.ORG Subject: de driver problems with ZNYX 21140A cards Message-ID: <Pine.GSO.4.05.9912212053120.20815-100000@cobra.cs.Virginia.EDU>
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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 *********************************************************************** B. Vinod Kumar Dept. of Computer Science, University of Virginia, Charlottesville Residence: 101, Carrollton Terrace, #2 Charlottesville, Va-22903 804-293-5101 ********************************************************************** To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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