With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cncNodeStratum
Cisco Network Clock Node Stratum
1.3.6.1.4.1.9.9.121.1.1.3
The stratum at which the device exists in the Synchronous Digital Hierarchy (See American National Standards Institute, ANSI T1.101, 'Synchronization Interface for Digital Networks' and Bell Communications Research, GR-436-CORE, 'Digital Network Synchronization Plan' for more detailed information regarding stratum.). The resident NCDP entity uses the value of this object to enforce the network clock distribution stratum hierarchy. This object is only used by the NCDP protocol entity.
Back to CISCO-ATM-NETWORK-CLOCK-MIB MIB page.
IPHost Network monitor allows you to monitor cncNodeStratum on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.