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Date: Mon, 26 Jan 2009 13:58:25 -0500
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Subject: Re: Link UP/DOWN problem with re0 on FreeBSD 7.1
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FreeBSD a écrit :
> Hi everyone,
> 
> Just to put you in context, I applied the following patch to make the 
> card available:
> 
> SVN rev 186389 on 2008-12-22 00:46:22Z by yongari
> 
> Since we don't request reset for rlphy(4), the link state 'UP'
> event from mii(4) may not be delivered if valid link was already
> established. To address the issue, check current link state after
> driving MII_TICK. This should fix a regression introduced in
> r185753 on fast ethernet controllers.
> 
> ---
> 
> I don't have any issue related to that anymore. The problem is that I 
> get link UP/DOWN a few times per hour on 3 identical machines that I 
> dumped/restored. They are all pluged in a Cisco switch that works fine 
> for every other PCs.
> 
> Jan 26 06:09:15 term005 kernel: re0: link state changed to DOWN
> Jan 26 06:09:17 term005 kernel: re0: link state changed to UP
> 
> I tried to switch cables, but I got the same result.
> 
> There is the pciconf -lv output:
> 
> re0@pci0:3:0:0: class=0x020000 card=0x02831028 chip=0x816810ec rev=0x02 
> hdr=0x00
>     vendor     = 'Realtek Semiconductor'
>     device     = 'RTL8168/8111 PCI-E Gigabit Ethernet NIC'
>     class      = network
>     subclass   = ethernet
> 
> There is the output of vmstat -i:
> 
> interrupt                          total       rate
> irq18: re0 ehci0++                 63766          0
> irq19: atapci0                    277001          3
> cpu0: timer                    156068748       1961
> Total                          156409515       1966
> 
> Could it be related to the fact that there is re0 and ehci0++ on the 
> same IRQ?
> 
> Thank you for your help,
> 
> Martin

I just tried with a brand new Dell 2708 switch and the problem is still 
there. I just confirmed that the UP/DOWN occurs every 10 minutes (+- a 
few seconds).

Thanks again,

Martin