With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsXCLabelStackIndex
mpls XC Label Stack Index
1.3.6.1.3.96.1.9.1.5
Primary index into mplsLabelStackTable identifying a stack of labels to be pushed beneath the top label. Note that the top label identified by the out- segment ensures that all the components of a multipoint-to-point connection have the same outgoing label. A value of 0 indicates that no labels are to be stacked beneath the top label.
Back to MPLS-LSR-MIB MIB page.
IPHost Network monitor allows you to monitor mplsXCLabelStackIndex 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.