With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsVpnVrfRouteTargetIndex
mpls Vpn Vrf Route Target Index
1.3.6.1.3.118.1.2.3.1.2
Auxiliary index for route-targets configured for a particular VRF.
Back to MPLS-VPN-MIB MIB page.
IPHost Network monitor allows you to monitor mplsVpnVrfRouteTargetIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.