An SNMP engine provides services for sending and receiving messages, authenticating and encrypting messages, and controlling access to managed objects. There is an association between an SNMP engine and the SNMP entity which contains it.
The engine contains:
A dispatcher
A message processing subsystem
A security subsystem
An access control subsystem
The OID of the root object is as follows:
iso(1).org(3).dod(6).internet(1).snmpV2(6).snmpModules(3).snmpFrameworkMIB(10)