HP XP RAID Manager Software - Manual (Page 7)

SNMP Agent functions
The SNMP Agent is mounted on the managed device (hard disk, etc.) in the network. It collects
error information, the usage condition, and other information about the device, and forwards the
information to the SNMP Manager. The SNMP Agent reports disk storage system failures to the
manager using the functions described in the following paragraphs.
SNMP traps
An SNMP Agent uses the SNMP trap function to report a storage system error to the SNMP
Manager. If an error occurs, an SNMP Agent issues an SNMP trap that reports the failure to an
SNMP Manager. When issuing an SNMP trap, an SNMP Agent also reports a product number,
nickname, reference code, and an identifier of the component.
The following table lists the events that trigger an SNMP Agent trap.
Table 1 SNMP Agent events
Description Events
All operations in a storage system stopped. Acute failure detected.
Operation in a component where a failure occurred stopped. Serious failure detected.
Partial failure. Moderate failure detected.
Minor failure. Service failure detected.
An SNMP Agent logs the most recent 256 traps, so you can see the trap history of a particular
device.
SNMP Agent operations
The following table lists the types of SNMP Agent operations.
Table 2 Types of SNMP Agent operations
Description Operation
Obtains a specific MIB object value. GET
GET REQUEST is the request from an SNMP Manager, and GET RESPONSE is the agent's response
to that request.
Continuously finds a MIB object. GETNEXT
GETNEXT REQUEST is the request from an SNMP Manager, and GETNEXT RESPONSE is the agent's
response to that request.
Reports an event (failure) to an SNMP Manager. TRAP
TRAP occurs without a request from the SNMP Manager.
Error report
The following table lists the errors to be reported for the REQUEST operations.
SNMP Agent configuration 7