If you try to make an SNMP request and get a time out like this :

% snmpwalk -v 1 -c public netapp-name
Timeout: No Response from netapp-name

Check that SNMP is enabled (options snmp.enable) and that your host is allowed to perform SNMP queries to the netapp (options snmp.access).

By the way, do use -v 1 ( protocol version 1) : I had timeouts while using -v 2c as well…