With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsInSegmentLabel
mpls In Segment Label
1.3.6.1.3.96.1.3.1.3
If the corresponding instance of mplsInSegmentLabelPtr is zeroDotZero then this object MUST contain the incoming label associated with this in-segment. If not this object SHOULD be zero and MUST be ignored.
Back to MPLS-LSR-STD-MIB MIB page.
IPHost Network monitor allows you to monitor mplsInSegmentLabel on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.
