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POST displays "Test271: Ports Internal Loopback FAILED" message

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TitlePOST displays "Test271: Ports Internal Loopback FAILED" message
Symptoms

During POST test after a reboot the unit displays a similar error shown below:
 

Test271: Ports Internal Loopback FAILED
SOCp Tx(0) Bytes wrong: sb=1510 Is=1591 Speed=0
SOCp Rx Bad Len (DCB=00783EF0) Sb=1510 IS=81
Environment
ERS 3500 / 4000 running any supported software
Cause
  • Product is functioning as designed
  • Issue is due to the use of an unsupported GBIC.
  • Output of the command show interfaces GBIC-info  will indicate whether a GBIC is supported or not.

 
Example:

ERS4000#sh interfaces gbic-info

 Unit 1
        Port  Number     48
        GBIC   Type      Unsupported
        Wavelength       0 nm
        Vendor Name      AGILENT
        Vendor OUI       0030D3
        Vendor Part #    QFBR-5788L
        Vendor Revision  N/A
        Vendor Serial    L1RP590690850
        HW Options       TX_DISABLE TX_FAULT RX_LOSS
        Date Code        04/13/2005
        CLEI Code        N/A
        Product Code     N/A
Resolution
Additional notes

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