25.1.5 SNMP Engine ID
The engine ID is designed to identify an SNMP engine uniquely. SNMP engine ID within a
management domain, a SNMP engine ID is the unique and unambiguous identifier of a
SNMP engine. So every SNMPV3 entity has a unique engine identifier named
SNMPEngineID.
SNMP Engine ID is an OCTET STRING, the length is 5~32 bytes the format of Engine ID
is defined in RFC3411:
The first four bytes are assigned with the private enterprise number in HEX by IANA.
The fifth bytes indicates how the rest (6th and following octets) are formatted.
0: Reserved
1: The following 4 bytes are for IPv4 address