With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cikePeerTable
Cisco IKE Peer Table
1.3.6.1.4.1.9.9.171.1.2.2
The IPsec Phase-1 Internet Key Exchange Peer Table. There is one entry in this table for each IPsec Phase-1 IKE peer association which is currently associated with an active IPsec Phase-1 Tunnel. The IPsec Phase-1 IKE Tunnel associated with this IPsec Phase-1 IKE peer association may or may not be currently active.
Back to CISCO-IPSEC-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cikePeerTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.