With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
appnVrnTgNum
appn Vrn Transmission Group Number
1.3.6.1.2.1.34.4.1.1.6.1.1.2
Number associated with the transmission group representing this virtual routing node definition.
Back to APPN-MIB MIB page.
IPHost Network monitor allows you to monitor appnVrnTgNum 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.