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Cisco Bug: CSCvv80705 - 3850 switch may crash after entering banner login command

Last Modified

Oct 16, 2020

Products (1)

  • Cisco 2600 Series Multiservice Platforms

Known Affected Releases


Description (partial)

On attempting to configure banner login, the switch reports log packet overrun, bad block pointer and crash signal. The same can be established from the crashinfo: 

CMD: 'banner login ^'
%Log packet overrun, PC 0xAAB19CCC94, format:
User:%s  logged command:%s
{banner text is displayed here}
CMD: 'end'
%SYS-5-CONFIG_I: Configured from console by {username}
CMD: 'write memory'
validblock_diagnose, code = 5

SYS-3-BADBLOCK: Bad block pointer {hexadecimal address}

banner login CLI entered with multi-line flag.
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