With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsL3VpnVrfSecIllegalLblVltns
mpls L3 Vpn Vrf Sec Illegal Lbl Vltns
Indicates the number of illegally received labels on this VPN/VRF. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of mplsL3VpnVrfSecDiscontinuityTime.
Back to MPLS-L3VPN-STD-MIB MIB page.
IPHost Network monitor allows you to monitor mplsL3VpnVrfSecIllegalLblVltns 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.