With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsLabelStackRowStatus
mpls Label Stack Row Status
1.3.6.1.3.96.1.12.1.5
For creating, modifying, and deleting this row. When a row in this table has a row in the active(1) state, no objects in this row except this object and the mplsLabelStackStorageType can be modified.
Back to MPLS-LSR-STD-MIB MIB page.
IPHost Network monitor allows you to monitor mplsLabelStackRowStatus on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.