With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alL2tpStatsTunnelLastErrorMessage
ALTIGA L2tp Statistics Tunnel Last Error Message
1.3.6.1.4.1.3076.2.1.2.16.2.1.32
This object contains the last value of the optional message as described in the Result Code AVP which caused the tunnel to disconnect.
Back to ALTIGA-L2TP-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alL2tpStatsTunnelLastErrorMessage 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.