With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsTunnelInstanceUpTime
mpls Tunnel Instance Up Time
This value identifies the total time that this tunnel instance's operStatus has been Up(1).
Back to MPLS-TE-STD-MIB MIB page.
IPHost Network monitor allows you to monitor mplsTunnelInstanceUpTime 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.