Peter Paluch Fri, 09/18/2009 - 11:35
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  • Cisco Employee,

Hello Olakunle,

It seems that your switch has a hardware problem with some of its network interface controllers and probably needs replacing. Sorry to bring bad news but if a POST fails with an error such as this (PHY loopback failed) and does not go away even after completely turning off the switch, waiting for a couple of minutes and then plugging it back into power with all devices disconnected from it then it's time to replace it.

Best regards,



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