With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cntpPeersAssocId
cntp Peers Assoc Id
1.3.6.1.4.1.9.9.168.1.2.1.1.1
An integer value greater than 0 that uniquely identifies a peer with which the local NTP server is associated.
Back to CISCO-NTP-MIB MIB page.
IPHost Network monitor allows you to monitor cntpPeersAssocId on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.