With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
parConnRemoteVcIndx
par Connection Remote Vc Indx
1.3.6.1.4.1.351.130.3.1.1.13
This object specifies the Virtual Connection Index at the remote node. It is used by Network Management to correlate this end of the connection with the remote end..
Back to CISCO-WAN-PAR-MIB MIB page.
IPHost Network monitor allows you to monitor parConnRemoteVcIndx on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.