Ethernet loopback test failed, is it a physical failure ?

[Asma_DIB]

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
No card in Slot-4
No card in Slot-5
No card in Slot-6
No card in Slot-7
No card in Slot-8

Thanks & Regards

[BrandonC]

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

[PARTHIBAN_CHINN]

If it stops forwarding traffic randomly then it might be a software issue.
Also Exos version is 12.4.2.17 which is END of Engineering.
Could you upgrade to latest and check.
we may not be able to trust diagnostic output with old code.