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On 12/27/2010 02:37 PM, E Westphal wrote:
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On Mon, 2010-12-27 at 17:29 -0500, Ryan Wagoner wrote:
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<pre><font color="#000000">On Mon, Dec 27, 2010 at 5:22 PM, E Westphal <<a moz-do-not-send="true" href="mailto:enwestph@rochester.rr.com">enwestph@rochester.rr.com</a>> wrote:</font>
<font color="#000000">> Have you experienced this? What's going on when this occurs? What do I need</font>
<font color="#000000">> to do to keep it from occurring? Please advise. Thanks.</font>
<font color="#000000">></font>
<font color="#000000">></font>
<font color="#000000">> Dec 4 10:18:28 localhost kernel: e1000: eth1 NIC Link is Up 100 Mbps Full</font>
<font color="#000000">> Duplex, Flow Control: RX/TX</font>
<font color="#000000">> Dec 4 10:18:29 localhost kernel: e1000: eth1 NIC Link is Down</font>
<font color="#000000">What is the NIC connected to? Have you tried a different switch port</font>
<font color="#000000">or network cable? Does rebooting the server make the problem go away</font>
<font color="#000000">for a bit? It seems like you need to perform some basic</font>
<font color="#000000">troubleshooting and let us know what you have an have no tried.</font>
<font color="#000000">Ryan</font>
<font color="#000000">_______________________________________________</font>
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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.<br>
<br>
<br>
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Are running the latest CentOS 5.5 release with all updates
installed? Back around 5.0 through at least 5.1, possibly even 5.2,
there were some driver bugs that affected some ethernet cards. I
have also seen problems that showed up with cheap switch hardware
and went away when plugged into a different switch. As far as
inexpensive switches go, the low end HP managed switches are one of
the few that I've had good luck with.<br>
<br>
Nataraj<br>
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