[CentOS] E1000 eth1 link flakiness - causes??

E Westphal enwestph at rochester.rr.com
Mon Dec 27 22:37:50 UTC 2010


On Mon, 2010-12-27 at 17:29 -0500, Ryan Wagoner wrote:

> On Mon, Dec 27, 2010 at 5:22 PM, E Westphal <enwestph at rochester.rr.com> wrote:
> > Have  you experienced this? What's going on when this occurs? What do I need
> > to do to keep it from occurring? Please advise. Thanks.
> >
> >
> > Dec  4 10:18:28 localhost kernel: e1000: eth1 NIC Link is Up 100 Mbps Full
> > Duplex, Flow Control: RX/TX
> > Dec  4 10:18:29 localhost kernel: e1000: eth1 NIC Link is Down
> 
> 
> What is the NIC connected to? Have you tried a different switch port
> or network cable? Does rebooting the server make the problem go away
> for a bit? It seems like you need to perform some basic
> troubleshooting and let us know what you have an have no tried.
> 
> Ryan
> _______________________________________________

I've tried all the obvious things. Cables, router ports, rebooting etc.
It's quite strange. From a cold bootup, it's fine. Then about 45 minutes
later it starts to act up. None of the obvious things seem to help.
Then, about 90 minutes after bootup, everything is fine again! Rock
solid! Ethtool and anything else I've tried fails to yield any hints,
thus my question to all of you.


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