HP StorageWorks Fabric OS 5.x MIB Reference Guide (AA-RVHXB-TE, September 2005)

128 Entity MIB objects
entPhysicalChildIndex
OID 1.3.6.1.2.1.47.1.3.3.1.1
Description The value of entPhysicalIndex for the contained physical entity. Through this the
containment hierarchy of the physical entities is displayed (see Figure 35 on page 116).
General group
This section lists the entityGeneral MIB.
entLastChangeTime
OID 1.3.6.1.2.1.47.1.4.1
Description The value of sysUpTime at the time a conceptual row is created, modified, or deleted in
any of the following tables:
• entPhysicalTable
• entLogicalTable
• entLPMappingTable
• entAliasMappingTable
• entPhysicalContainsTable
Entity MIB trap
This section lists the entityMIBTrap objects. Figure 33 on page 113 displays the structure of the
entityMIBTraps group.
entConfigChange
OID 1.3.6.1.2.1.47.2.0.1
Status Current
Description An entConfigChange notification is generated when the value of entLastChangeTime
changes. It can be utilized by an NMS to trigger logical/physical entity table
maintenance polls.
An agent should not generate more than one entConfigChange notification event in a
given time interval (five seconds is the suggested default). A notification event is the
transmission of a single trap or inform PDU to a list of notification destinations.
If additional configuration changes occur within the throttling period, then notification
events for these changes should be suppressed by the agent until the current throttling
period expires. At the end of a throttling period, one notification event should be
generated if any configuration changes occurred since the start of the throttling period; in
such a case, another throttling period is started right away.
An NMS should periodically check the value of entLastChangeTime to detect any missed
entConfigChange notification events: for example, due to throttling or transmission loss.