With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cvpdnSessionAttrVirtualCircuitID
cvpdn Session Attr Virtual Circuit ID
1.3.6.1.4.1.9.10.24.1.3.2.1.20
The virtual circuit ID of an active Layer 2 VPN session.
Back to CISCO-VPDN-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cvpdnSessionAttrVirtualCircuitID 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.