With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alL2tpStatsTunnelControlRecvPackets
ALTIGA L2tp Statistics Tunnel Control Receive Packets
1.3.6.1.4.1.3076.2.1.2.16.2.1.14
This object contains the number of control packets received on the tunnel.
Back to ALTIGA-L2TP-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alL2tpStatsTunnelControlRecvPackets 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.