With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cipSecTunOutDropPkts
Cisco IPSec Sec Tunnel Out Dropped Packets
1.3.6.1.4.1.9.9.171.1.3.2.1.46
The total number of packets dropped during send processing by this IPsec Phase-2 Tunnel.
Back to CISCO-IPSEC-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cipSecTunOutDropPkts 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.