It’s using snmpd, so it works just as it does on linux -> snmp
Check if the daemon is running:
launchctl print system/org.net-snmp.snmpd
To launch it:
sudo launchctl unload /System/Library/LaunchDaemons/org.net-snmp.snmpd.plist
sudo launchctl load -w /System/Library/LaunchDaemons/org.net-snmp.snmpd.plist
Every update seems to overwrite it though. Certainly there’s a good way to keep it.