With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rttMonStatsCaptureStartTimeIndex
Round Trip Time Monitor Stats Capture Start Time Index
1.3.6.1.4.1.9.9.42.1.3.1.1.1
The time when this row was created. This object is the second index of the rttMonStatsCaptureTable Table. The the number of rttMonStatsCaptureStartTimeIndex groups exceeds the rttMonStatisticsAdminNumHourGroups value, the oldest rttMonStatsCaptureStartTimeIndex group will be removed and replaced with the new entry. When the RttMonRttType is 'pathEcho', this object also uniquely defines a group of paths. See the rttMonStatsCaptureEntry object.
Back to CISCO-RTTMON-MIB MIB page.
IPHost Network monitor allows you to monitor rttMonStatsCaptureStartTimeIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.