With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsLabelStackTable
mpls Label Stack Table
1.3.6.1.3.96.1.13
This table specifies the label stack to be pushed onto a packet, beneath the top label. Entries into this table are referred to from mplsXCTable.
Back to MPLS-LSR-STD-MIB MIB page.
IPHost Network monitor allows you to monitor mplsLabelStackTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.