Check_MK & Cisco SG 500 switches

Hi,

Does anyone have experience with Check_MK snmp reading cisco small business switches? ( SG 500 model)

The problem i have is the switch will choke (CPU 90+ %) and check_mk services will go stale

I can sort of resolve it if I limit check_mk to a certain amount of interfaces it can monitor, but CPU utilization of the switch will be around 30% all the time where it normally is 6%

I tried:

-snmpv1 (bulk walk disabled)

-snmpv2

-snmpv3

I also tried different snmp views

-cisco-mib

-default

-custom-view

​

Our current monitoring system (whatsupgold) does not have any issues with snmp reading the SG 500

any help would be much appreciated