With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsOutSegmentTopLabel
mpls Out Segment Top Label
1.3.6.1.3.96.1.6.1.4
If mplsOutSegmentPushTopLabel is true then this represents the label that should be pushed onto the top of the outgoing packet's label stack.
Back to MPLS-LSR-MIB MIB page.
IPHost Network monitor allows you to monitor mplsOutSegmentTopLabel 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.