Download
From solarwinds: http://downloads.solarwinds.com/solarwinds/Release/PreRelease/SolarWindsSnmpWalk.zip
references:
snmpwalk Examples & Commands (Windows & Linux) Step-by-Step Guide (comparitech.com)
https://support.solarwinds.com/SuccessCenter/s/article/Run-SolarWinds-SNMPWALK?language=en_US