Template:FAQ:Agent 32
From Net-SNMP Wiki
Both these trees are designed to report things you ask it to report
on. If you don't declare anything in the snmpd.conf file for it to
monitor, it will not report anything. See the snmpd.conf(5)
manual page and the EXAMPLE.conf
file for details on configuring the agent.
Optionally, run
snmpconf -g monitoring
to help you set up this section of the snmpd.conf file.