Date: Thu, 27 Sep 2001 09:25:52 -0600 From: "Kenneth D. Merry" <ken@kdm.org> To: Matthew Rezny <mrezny@umr.edu> Cc: "net@freebsd.org" <net@FreeBSD.ORG> Subject: Re: Alteon gigE NIC (if_ti driver) problems Message-ID: <20010927092551.A29083@panzer.kdm.org> In-Reply-To: <20010926205541.10F5A37B417@hub.freebsd.org>; from mrezny@umr.edu on Wed, Sep 26, 2001 at 03:55:30PM -0500 References: <20010926205541.10F5A37B417@hub.freebsd.org>
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On Wed, Sep 26, 2001 at 15:55:30 -0500, Matthew Rezny wrote: > I have some more information since my initial posting yesterday. I set > the NMBCLUSTERS back to default, which made no difference. Therefore, > moving from 4.3 to 4.4 is what drastically increased the frequency at > which the link goes down and back up. I also captured dmesg now I case > there is any useful information in it. The fluctuation of the link > occurs multiple times a second with the new kernel when attempting to > use the network with this machine. Any suggestions would be greatly > appreciated. Thanks. [ ... ] > ti0: <Alteon AceNIC 1000baseSX Gigabit Ethernet> mem > 0x82850000-0x82853fff irq 11 at device 6.0 on pci0 > ti0: interrupting at CIA irq 11 > ti0: Ethernet address: 00:60:cf:20:1e:99 [ ... ] > ti0: gigabit link up > ti0: link down > ti0: gigabit link up > ti0: link down > ti0: gigabit link up > ti0: link down > ti0: gigabit link up > ti0: link down > ti0: gigabit link up > ti0: link down > ti0: gigabit link up > ti0: link down > ti0: gigabit link up > ti0: link down > ti0: gigabit link up > ti0: link down > ti0: gigabit link up > ti0: link down > ti0: gigabit link up [ ... ] The most likely explanation for this is that you've got a bad/dirty piece of fiber. The number of mbuf clusters probably isn't going to affect this at all, unless you're dumping a lot of traffic over the NIC and increasing the number of mbufs allows you to dump more packets. So I'd say replace your fiber. Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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