With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alL2tpStatsFailedTunnels
ALTIGA L2tp Statistics Failed Tunnels
1.3.6.1.4.1.3076.2.1.2.16.1.5
This object returns the number of tunnels that failed to reach the established state.
Back to ALTIGA-L2TP-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alL2tpStatsFailedTunnels 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.