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snmp input queue full on c3750

jesper_fr
Beginner
Beginner

Hi All,

I get this error below on a 3750 stack (running 12.2.46), and i can only make it disappear if i reboot the switch, but it comes back again after a while. before i reboot the switch, it does not respond to SNMP

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


I can see that others have had the same problem, but with another SW version. Does anyone know if it's a bug i the software?

Thanks,

Jesper

17 REPLIES 17

Hi All,

I get this error below on a 3750 stack (running 12.2.46), and i can only make it disappear if i reboot the switch, but it comes back again after a while. before i reboot the switch, it does not respond to SNMP

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


I can see that others have had the same problem, but with another SW version. Does anyone know if it's a bug i the software?

Thanks,

Jesper

Hi Jesper,

Genral recommendation for the above error is Use the command show snmp to see the number of packets dropped.

Stop any SNMP access to the device until the error condition is recovered.

Check out the below link about the error, hope this helps out your query !!

http://www.cisco.com/en/US/docs/ios/12_2sr/system/messages/sm2sr07.html

If helpful do rate the valauble post.

Regards

Ganesh.H

You have posted a link to a page that says "This documentation has been moved." - now help in that

Hi,


please find the details below:

Error Message    SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input queue full 

Explanation: Snmp packet dropped due to input queue full error

Recommended Action :  Use the command show snmp to see the number of packets dropped. Stop any  SNMP access to the device until the error condition is recovered.

<http://www.cisco.com/en/US/docs/wireless/access_point/12.4_10b_JA/configuration/guide/scg12410b-appC-errormsg.html#wp1046060>

Possible short-term workaround could be to restart SNMP Engine. This will also serve us as test case. To restart the SNMP Engine, un-configure snmp
and reconfigure a community strings as below:
no snmp-server
snmp-server community RO 10
snmp-server community RW 11
snmp-server community RO 10

The rest of the SNMP configuration will not be lost. Of course you'll
need to replace "" with actual community strings.

To summarize, Action Plan:
===
show stacks 215
(wait 5 min)
show stacks 215
show processes cpu | inc SNMP
show running  | inc community
conf t
no snmp-server
do show processes cpu | inc SNMP
(copy/paste snmp-server community commands we obtained from running-config)
end

Now please verify if SNMP Agent on the device responds properly and if %SNMP-3-INPUT_QFULL_ERR aren't present
in the log.

Hope this helps!

Thank you!

Cheers!
DB

I just had the same problem on a WS-C4506-E. I restarted the SNMP engine as suggested. That seems to have fixed the problem.

Yes , this solutiuon works for a short time, but then the SNMP goes down again. I suspect that it has something to do with snmp from CiscoWorks. If I block SNMP from CiscoWorks in the firewall, then SNMP works fine. If I unblock the SNMP traffic, it goes down again after a shot time.

Rgds,

Jesper