when i adding sensor Cisco IP SLA in my prtg ... PRTG Network Monitor 20.4.64.1402 x64 i got this message Sorry, the scan for available monitoring items has failed! Could not create the Cisco IP SLA sensor on device No such instance (SNMP error # 223)
and i am all ready added IP SLA sensor before 1 week and now i can't add IP SLA sensor please can you tell me what is this problem and how can i fix it?
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