With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsTunnelPrimaryUpTime
mpls Tunnel Primary Up Time
Specifies the total time the primary instance of this tunnel has been active. The primary instance of this tunnel is defined in mplsTunnelPrimaryInstance.
Back to MPLS-TE-STD-MIB MIB page.
IPHost Network monitor allows you to monitor mplsTunnelPrimaryUpTime on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.