HP XP Racks - Manual (Page 6)

If an SNMP Agent detects an abnormal event, it sends a trap to the SNMP Manager. However, if
a trap is dropped in transmission, the SNMP Manager does not know that it was sent. For this
reason, you should use both polling and traps to determine whether an abnormal event has
occurred.
Management Information base
The standardized configuration and database of network management information is called a
Management Information Base (MIB). A standard MIB is common to all SNMP interfaces. An
extension MIB is defined by the particular managed device or protocol.
A MIB is a collection of standardized configuration and network management information that is
contained in each device on the network. Each MIB contains a set of parameters called managed
objects. Each managed object consists of a parameter name, one or more parameter(s), and a
group of operations that can be executed with the object. The MIB defines the type of information
that can be obtained from a managed device, and the device settings that can be controlled from
a management system.
SNMP Agent configuration
The XP7 Storage SNMP Agent is installed on the SVP, which is the computer within the storage
array that manages the storage system. The XP7 Storage has an exclusive LAN for communications
between a storage system and the SVP, and a separate LAN for SNMP. The configuration of each
Network Management Station is determined by the type of SNMP Manager.
Figure 2 (page 6)
illustrates the SNMP environment. Figure 3 (page 6) shows an example of SNMP operations by
using an SNMP Manager.
Figure 2 SNMP environment architecture
Figure 3 Example of SNMP operations
6 Introduction