With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rttMonStatsTotalsElapsedTime
Round Trip Time Monitor Stats Totals Elapsed Time
1.3.6.1.4.1.9.9.42.1.3.3.1.1
The length of time since this conceptual statistics row was created.
Back to CISCO-RTTMON-MIB MIB page.
IPHost Network monitor allows you to monitor rttMonStatsTotalsElapsedTime on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.