With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alL2tpStatsSessionAuthMethod
ALTIGA L2tp Statistics Session Authentication Method
1.3.6.1.4.1.3076.2.1.2.16.3.1.20
This object contains the proxy authentication method employed by the LAC for the session. If l2tpSessionProxyLcp is false(2) this object should not be interpreted.
Back to ALTIGA-L2TP-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alL2tpStatsSessionAuthMethod on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.