With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cPtpClockDefaultDSEntry
Cisco Ptp Clock Default DS Entry
1.3.6.1.4.1.9.9.760.1.2.3.1
An entry in the table, containing information about a single PTP clock Default Datasets for a domain.
Back to CISCO-PTP-MIB MIB page.
IPHost Network monitor allows you to monitor cPtpClockDefaultDSEntry 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.