With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dsx3LineNumOfValidEntries
dsx3 Line Num Of Valid Entries
1.3.6.1.4.1.351.110.4.4.1.1.2
The number of DSX3 configuration entries (regardless of their current configuration) in the cwDsx3ConfigTable.
Back to CISCO-MGX82XX-DSX3-MIB MIB page.
IPHost Network monitor allows you to monitor dsx3LineNumOfValidEntries 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.