With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rttMonLatestRtpOperAvgOWDS
Cisco RTT Monitor Latest Rtp Operational Avg OWDS
1.3.6.1.4.1.9.9.42.1.5.3.1.23
Average one way latency value in destination to source direction
Back to CISCO-RTTMON-RTP-MIB MIB page.
IPHost Network monitor allows you to monitor rttMonLatestRtpOperAvgOWDS on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.