PowerScale: SNMP - Engine ID

• "Engine ID" is a feature specific to SNMPv3 and was introduced as part of its enhanced security model.  
• The Engine ID uniquely identifies each SNMPv3 entity, be it an SNMP agent or an SNMP manager. 
• The uniqueness of the ID is crucial for security purposes, keeping in mind that SNMPv3 has added security features compared to its predecessors. 
• The Engine ID is used in the generation of security parameters, and it helps to ensure that the communication is indeed with the correct device. 
• Without unique Engine IDs, there could be potential for security breaches or miscommunication.

By default, the Engine ID is based on the MAC address of the device and, is part of SNMP v3 communication.
However, define a custom "Engine ID" at the time of SNMP channel create execution and check if the communication is more secure.
The SnmpEngineID textual convention [RFC3411] defines that a snmpEngineID value MUST be between 5 and 32 octets long, The values of any octet are specified by two hexadecimal digits. 

Command to create a SNMP channel with "Engine ID":

isi event channels create snmpchannel snmp --host=<snmp-receiver.example.com> --
snmp-auth-password=<string> --snmp-security-name=<string> --snmp-priv-password=<string>
--snmp-engine-id=<string>

To view the SNMP configuration details along with engine id: 

cluster-1# isi event channels view <channel name for snmpv3>
                 ID: 4
               Name: snmpv3
               Type: snmp
            Enabled: Yes
               Host: 10.x.x.x
          Community: -
      Use SNMP Trap: No
        SNMP Use V3: Yes
SNMP Security Name: snmpuser
SNMP Security Level: noAuthNoPriv
SNMP Auth Protocol: -
SNMP Auth Password: -
SNMP Priv Protocol: -
SNMP Priv Password: -
     SNMP Engine ID: 0x80001f8880e9630000000001