From owner-freebsd-hackers Thu Mar 20 00:16:42 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id AAA01979 for hackers-outgoing; Thu, 20 Mar 1997 00:16:42 -0800 (PST) Received: from mail.cdsnet.net (mail.cdsnet.net [204.118.244.5]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id AAA01974 for ; Thu, 20 Mar 1997 00:16:39 -0800 (PST) Received: from mail.cdsnet.net (mail.cdsnet.net [204.118.244.5]) by mail.cdsnet.net (8.8.5/8.7.3) with SMTP id AAA10605 for ; Thu, 20 Mar 1997 00:16:38 -0800 (PST) Date: Thu, 20 Mar 1997 00:16:37 -0800 (PST) From: Jaye Mathisen To: hackers@freebsd.org Subject: CRC errors with SMC 100MBit? And vx0 driver. Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Using a SMC card in a 2.2-nearly-released-but-cannot-remember-exactly-which-march-revision, My 3com linkswitch 3k (And the NFS server receiving the data) is reporting that about 1% or so of the packets coming out of my SMC card to the server have CRC errors. Interestingly enough, it appears to only be via NFS traffic, since FTP's of 1 GB will go fine with no errors at a few MB/sec, but NFS traffic instantly causes them to appear. So I was thinking maybe it was UDP traffic, *but* as near as I can tell, I'm using TCP mounts. So heck if I know. It's annoying though. Any ideas? Actually, on a whim, I just swapped the SMC card for a 3COM 3c905 100MBit card, and it does similar type things. I've tested the cabling with my trusty Fluke LanMeter, and even a null cable with the cards back-to-back shows the problem, so I don't think it's my Switch.