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kaljusaks_20700's avatar
kaljusaks_20700
Icon for Nimbostratus rankNimbostratus
Jun 17, 2015

SNMP GetBulk monitoring requests do not seem to work

Hi, I'm trying to set up monitoring of the F5 devices using nagios scripts written in Perl (check_f5 and check_nwc_health) and they respond with timeouts to the requests. Doing some investigation...
application delivery
LTM
management
kaljusaks_20700's avatar
kaljusaks_20700
Icon for Nimbostratus rankNimbostratus
Jun 17, 2015

I believe the problem was in the FW that did not allow bigger SNMP packets through. Unfortunately there does not seem to be a way to increase the allowed packet size in the FW.

 

The workaround to the problem is to force the checks to use SNMP version 1 which does not have the GetBulk request defined and therefore does not exceed the FW packet size limit.

 

This will decrease the performance, though.