With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsTunnelPathChanges
mpls Tunnel Path Changes
Specifies the number of times the actual path for this tunnel instance has changed.
Back to MPLS-TE-STD-MIB MIB page.
IPHost Network monitor allows you to monitor mplsTunnelPathChanges on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.