title: configure SNMP Trap monitoring in Nagios
body: <p>I am struggling a lot to understand and setup SNMP Trap monitoring using Nagios monitoring tool.
  I followed many tutorials and articles over internet but unable to understand below 2 points:</p>
  
  <p>1) Understanding about SNMP Trap monitoring, why we do SNMP trap monitoring ?
  2) How do we implement SNMP Trap monitoring using Nagios monitoring tool ?</p>
  
  <p>Any help on above 2 points would be highly appreciated.</p>
  
  <p>Thanks in Advance.</p>