SNMP includes the following basic operations:
Enables the SNMP manager to retrieve (read) the value of MIB objects at the SNMP agent.
Enables the SNMP manager to set (write) the value of MIB objects at the SNMP agent.
Enables an SNMP agent to asynchronously notify the SNMP manager of significant but unsolicited events (traps).
Enables an SNMP manager to asynchronously send an alert (similar to a trap) to another SNMP manager.