I've added additonal APE's to our environment.They are having issues with nodes polling by SNMP.
They are not responding to polls, ICMP,Agent, WMI, are all good.
Do I have to configure the SNMP Security/Traps on the new pollers?
Test if you can do SNMP from the APEs going to the device. You can run SNMPwalk from the APE.
https://support.solarwinds.com/SuccessCenter/s/article/Run-SolarWinds-SNMPWALK?language=en_US
If that does not work, then it's most probably a network issue or your system firewall is just blocking the SNMP request.
You've got a potential block at the windows firewall out, network firewall, windows firewall in, or SNMP authorized list levels.