Enable v3, disable v1 and v2c Need to use v3 only and disable v1 and v2c. In /etc/snmp/snmpd.conf delete or comment the community names that are used for v1 and v2c (for example): rocommunity public Your default community names may not exactly be called “public” Restart the snmpd daemon. # /etc/init.d/snmpd restart Verify that[…]