With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsVpnVrfRouteIfIndex
mpls Vpn Vrf Route If Index
1.3.6.1.3.118.1.4.1.1.8
The ifIndex value that identifies the local interface through which the next hop of this route should be reached.
Back to MPLS-VPN-MIB MIB page.
IPHost Network monitor allows you to monitor mplsVpnVrfRouteIfIndex 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.