With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rttMonLatestJitterOperNTPState
Round Trip Time Monitor Latest Jitter Operational NTP State
1.3.6.1.4.1.9.9.42.1.5.2.1.51
A value of sync(1) means sender and responder was in sync with NTP. The NTP sync means the total of NTP offset on sender and responder is within configured tolerance level.
Back to CISCO-RTTMON-MIB MIB page.
IPHost Network monitor allows you to monitor rttMonLatestJitterOperNTPState on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.