Ethernet loopback test failed, is it a physical failure ?

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  • Updated 4 years ago
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Hi there,
I noticed that i have problem with ports on switch summit X450a-48t, it stops forwarding traffic randomly, so i did a show diagnostics : (is it a physical problem) ?


Slot-1: X450a-48tLast Test Date: Wed Nov 12 13:25:20 2014
Ethernet loopback test failed
Mac Loopback        : Run Test Failure on unit -[0], port-[8] 
Loopback Phy Copper : Run Test Failure on unit -[0], port-[8] 
Last Test Version:  12.4.2.17
Summary: Diagnostics Fail


Slot-2: X450a-48t
Last Test Date: Wed Nov 12 14:22:10 2014
Ethernet loopback test failed
Last Test Version:  12.4.2.17
Summary: Diagnostics Fail
No card in Slot-3
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No card in Slot-8

Thanks & Regards
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Asma DIB

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Posted 4 years ago

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Brandon Clay, Escalation Support Engineer

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Official Response
I would suggest opening a case with GTAC. Most likely this is a hardware failure.