With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsInSegmentNPop
mpls In Segment N Pop
1.3.6.1.3.96.1.3.1.5
The number of labels to pop from the incoming packet. Normally only the top label is popped from the packet and used for all switching decisions for that packet. Note that technologies which do not support label popping should set this value to its default value of 1.
Back to MPLS-LSR-MIB MIB page.
IPHost Network monitor allows you to monitor mplsInSegmentNPop 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.