SNMP supports two types of notifications:  TRAPs and INFORMs.  (In SNMPv1, there was only TRAPs; SNMPv2c and SNMPv3 support INFORMs too).  There is one fundamental difference between SNMP INFORMs and TRAPs:
 
SNMP supports two types of notifications:  TRAPs and INFORMs.  (In SNMPv1, there was only TRAPs; SNMPv2c and SNMPv3 support INFORMs too).  There is one fundamental difference between SNMP INFORMs and TRAPs:
   Exception encountered, of type "Error"