we used builtin "SNMP APC Hardware / SNMP library apc-related" sensor to monitor 4 APC UPS devices for literally years without errors/warnings.
Since 2018/03/07 all of the sensors would show SNMP error 2003 and I can't seem to figure out why.
We use a custom SNMP Community for the requests and everything works just finde outside of PRTG console. I can SNMP request via Powershell and also via Paessler SNMP Tester from my local machine as well as PRTG host.
Strangely when I restart the mgmt interface of the UPS I get some results from PRTG but these last for maybe only 5-10 request (interval = 5 min). Requests "outside" of the sensor work just fine (SNMP Tester or Powershell).
I already tried the following: - reboot of PRTG / reboot of UPS - increased interval time - recreated device in PRTG - recreated SNMP community / tried different communities - recreated the sensors (APC sensor, SNMP library, and custom SNMP sensor)
Are there any known issues with the March 7th 2018 – Version 220.127.116.1134 or March 19th 2018 – Version 18.104.22.16858 Update?
(Another thing I would like to mention is, that although I set the interval to e.g. 5 minutes, the first requests don't take care about the interval )
Thanks in advance!