Date: Tue, 8 Oct 2002 13:11:55 -0400 From: Barney Wolff <barney@tp.databus.com> To: ertank@softhome.net Cc: freebsd-net@FreeBSD.ORG Subject: Re: xl driver Message-ID: <20021008171155.GA72292@tp.databus.com> In-Reply-To: <courier.3DA2827C.000045E3@softhome.net> References: <courier.3DA2827C.000045E3@softhome.net>
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The "bad checksum" that you see in the tcpdump is not an error and has nothing to do with whatever problems you're having. The xl driver and cards have the ability to compute the checksum on the card, after tcpdump sees the packet. You'll notice that all of those messages are on packets you're sending, not receiving. Seriously asymmetric performance is often caused by duplex mismatch. Try forcing the card to half or full duplex with ifconfig, or in whatever switch you're using, and see if the problem goes away. -- Barney Wolff I'm available by contract or FT, in the NYC metro area or via the 'Net. http://www.databus.com/bwresume.pdf To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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