With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
crasL2LNumSessions
cras L2 L Num Sessions
1.3.6.1.4.1.9.9.392.1.3.29
The number of currently active LAN to LAN sessions.
Back to CISCO-REMOTE-ACCESS-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor crasL2LNumSessions 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.