The SNMP Agent is mounted on a managed device (such as a hard disk) in the network. It collects error information, the usage condition, and other information about the device, and sends traps to the SNMP Manager.
The SNMP Agent reports disk storage system failures to the manager using the SNMP trap function.
In a storage system, the SNMP Agent is mounted on each CTL. The SNMP Agent on CTL1 or CTL2 normally sends traps. If a failure occurs in either of the CTLs, the SNMP Agent on a normal CTL sends traps. When you use SNMP v3 protocol, you need to register the SNMP Engine ID for each CTL in the SNMP Manager. For details, see Checking SNMP Engine ID.