HP StorageWorks MSA 2/8 HP StorageWorks MIB V3.1.x/4.1.x Reference Guide (AA-R - Page 320

Fibre Alliance MIB Objects :connUnitEventIndex OID Description 1.3.6.1.3.94.1.11.1.2 Each connectivity unit has its own event buffer. As it wraps, it may write over previous events. This object is an index into the buffer. It is recommended that this table is read using getNexts to retrieve the initial table. The management application should read the event table at periodic intervals and then determine if any new entries were added by comparing the last known index value with the current highest index value. The management application should then update its copy of the event table. If the read interval is too long, it is possible that there may be events that may not be contained in the agent's internal event buffer. Example: An agent may read events 50-75. At the next read interval, connUnitEventCurrID is 189. If the management application tries to read event index 76, and the agent's internal buffer is 100 entries maximum, event index 76 is no longer available. The index value is an incrementing integer starting from one (1) every time there is a table reset. On table reset, all contents are emptied and all indices are set to zero (0). When an event is added to the table, the event is assigned the next higher integer value than the last item entered into the table. If the index value reaches its maximum value, the next item entered causes the index value to roll over and start at one (1) again. Note: Mapped to swEventIndex. 320 MIB Version 3.1.x/4.1.x Reference Guide