The value of tnOamSaaCtlKeepProbeHistoryOpr indicates whether or not per-probe history table rows will be created for this test. A test without per-probe history table rows consumes less CPM RAM. The value of tnOamSaaCtlKeepProbeHistoryOpr is derived from the value of`tnOamSaaCtlKeepProbeHistoryAdm, as shown in the following table. tnOamSaaCtlKeepProbeHistoryAdm tnOamSaaCtlKeepProbeHistoryOpr 'keep(1)' 'keep(1)' 'drop(2)' 'drop(2)' 'auto(3)' 'keep(1)' or 'drop(2)', chosen by SROS The history table rows created for the combinations of tnOamSaaCtlKeepProbeHistoryOpr and tnOamSaaCtlTestMode values are shown in the following table. Configuration Options History Table Rows Created 'keep(1)', 'ping(1)' tnOamPingHistoryTable or tnOamMacPingHistoryTable 'keep(1)', 'traceroute(2)' tnOamTrProbeHistoryTable 'drop(2)', 'ping(1)' none 'drop(2)', 'traceroute(2)' unsupported combination. If tnOamSaaCtlTestMode is 'notConfigured(0)', the value of tnOamSaaCtlKeepProbeHistoryOpr is insignificant, since a test without a test mode cannot be started. When a Get is performed on tnOamSaaCtlKeepProbeHistoryOpr in this case, 'keep(1)' is returned. If tnOamSaaCtlKeepProbeHistoryAdm is 'auto(3)': 1. tnOamSaaCtlKeepProbeHistoryOpr is 'drop(2)' if a) the test's probe count is greater than 100, OR b) the test's interval is less than one second, OR c) tnOamSaaCtlTestMode is 'ping(1)' AND the test is continuous (i.e. tnOamSaaCtlContinuous is 'true') AND an accounting policy is specified (i.e. tnOamSaaCtlAcctPolicyId is non- zero). 2. Otherwise, tnOamSaaCtlKeepProbeHistoryOpr is 'keep(1)'.