With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cnsClkSelGlobNofSources
cns Clk Sel Glob Nof Sources
1.3.6.1.4.1.9.9.761.1.1.1.1.11
This object indicates the number of synchronization sources currently configured for the G.781 clock selection process.
Back to CISCO-NETSYNC-MIB MIB page.
IPHost Network monitor allows you to monitor cnsClkSelGlobNofSources 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.
