With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsL3VpnVrfRteInetCidrIfIndex
mpls L3 Vpn Vrf Rte Inet Cidr If Index
The ifIndex value that identifies the local interface through which the next hop of this route should be reached. A value of 0 is valid and represents the scenario where no interface is specified.
Back to MPLS-L3VPN-STD-MIB MIB page.
IPHost Network monitor allows you to monitor mplsL3VpnVrfRteInetCidrIfIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.