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When running ethtool I notice a very high level of rx_crc_errors. When the server is under heavy load the counter goes even higher. What does this typically point to as the source of the problem? Media or cable issues?

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Typically errors of this type (errors that indicate bad data integrity) are the result of layer 1 problems. I'd investigate cabling and the physical layer interface first.

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Thanks for the information. I'll try doing the testing you've suggested. –  Graham Zulauf Jan 21 '11 at 20:58
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Replacing the ethernet cable would be my first step to debug, followed by testing the patch field connectors etc.

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Thanks for the information. I'll try doing the testing you've suggested. –  Graham Zulauf Jan 21 '11 at 20:58
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