With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsTunnelARHopIpv4PrefixLen
mpls Tunnel AR Hop Ipv4 Prefix Len
1.3.6.1.3.95.2.7.1.5
If mplsTunnelARHopAddrType is ipV4(1), then the prefix length for this hop's IPv4 address is contained herein. This object is otherwise insignificant and should contain a value of 0.
Back to MPLS-TE-MIB MIB page.
IPHost Network monitor allows you to monitor mplsTunnelARHopIpv4PrefixLen on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.