With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cntpSysRootDelay
cntp Sys Root Delay
1.3.6.1.4.1.9.9.168.1.1.4
A signed fixed-point number indicating the total round-trip delay in seconds, to the primary reference source at the root of the synchronization subnet.
Back to CISCO-NTP-MIB MIB page.
IPHost Network monitor allows you to monitor cntpSysRootDelay 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.