With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cvpdnTemplateActiveSessions
cvpdn Template Active Sessions
1.3.6.1.4.1.9.10.24.1.5.1.1.2
The total number of active session in all groups associated with the template.
Back to CISCO-VPDN-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cvpdnTemplateActiveSessions 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.