With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsL3VpnVrfRteInetCidrNextHopAS
mpls L3 Vpn Vrf Rte Inet Cidr Next Hop AS
The Autonomous System Number of the next hop. The semantics of this object are determined by the routing protocol specified in the route's mplsL3VpnVrfRteInetCidrProto value. When this object is unknown or not relevant, its value should be set to zero.
Back to MPLS-L3VPN-STD-MIB MIB page.
IPHost Network monitor allows you to monitor mplsL3VpnVrfRteInetCidrNextHopAS on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.