SNMP-3-INPUT_QFULL_ERR Packet dropped due to input queue full

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Jul 8th, 2014
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We have Cisco 3750 stacked switches and are running 12.2(35)SE5.

Our customer is getting "SNMP-3-INPUT_QFULL_ERR Packet dropped due to input queue full". This has impacted their trading floor operations thrice in  weeks. We recommended that there is IOS bug CSCsz89393 however customers comment is that, "The symptoms described in CSCsz89393 affect stacks with five or more members – our stacks have only four. Also both stacks (NBUKSWT004 and NBUKSWT006) run 12.2(35)SE5 which is not on the affected releases list for the CSCsz89393"

Can you please help?

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Rajeev Sharma Wed, 07/09/2014 - 11:57
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Hey Dhiren,

Try restarting the SNMP engine and check if you get rid of this syslog. By restarting i mean removing the snmp-server configuration, wait for 5 minutes and reconfigure it. And in case error returns collect the following:

show stack <PID> command at least 6-8 times in a row

You can find the PID with the command "show processes cpu | i SNMP ENGINE|PID





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