rmon Time Filter Mode

1.3.6.1.4.1.9.9.103.1.1.1

This object controls the way the SNMP agent implements the getnext operation for tables with a TimeFilter index, such as those found in the RMON2-MIB module. If this object has the value `stopAfterOne(1)', then a GetNext or GetBulk operation will provide one pass through a given table, i.e., the agent will continue to the next object or table, instead of incrementing a TimeMark INDEX value, even if there exists higher TimeMark values which are valid for the same conceptual row. This mode is not strictly compliant with the TimeFilter textual convention definition, because potentially many conceptual rows will be skipped instead of returned in a GetNext or GetBulk operation. Such rows are identical to each other, except for the returned TimeMark INDEX value. This mode is intended only for testing purposes, however it may also be useful if an NMS wishes to utilize the GetBulk PDU. This mode will prevent the GetBulk responses from containing duplicate rows due to the TimeFilter mechanism. If this object has the value `stopAfterAll(2)', then a getNext or getBulk MIB walk will repeat through the same MIB table until the TimeMark for the most-recently changed entry is reached. Note that as long as traffic occurs on the monitored interface, it is possible a highest value of the TimeFilter INDEX may never be reached. This mode is strictly compliant with the TimeFilter textual convention definition. Note that GetBulk PDU responses in this mode will likely contain multiple copies of the same MIB instances, differing only in the TimeMark INDEX value. As an example, consider row 'fooEntry' which was last updated at 'time 1000'. An NMS may use any TimeMark INDEX value in the range '0' to '1000', and the current (i.e., time of get request) counter values for the 'fooEntry' will be returned by agent. In the 'stopAfterOne' mode, the agent will not increment the fooEntry TimeMark index under any conditions. In the 'stopAfterAll' mode, the agent will increment any fooEntry TimeMark INDEX value in the range '0' to '999', up until the TimeMark value of '1000' is reached.