With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dsgIfTunnelGroupIndex
dsg If Tunnel Group Index
This index represents a group of tunnels that could be associated to one or more downstream which mapped to dsgIfTunnelGrpIndex.
Back to DSG-IF-MIB MIB page.
IPHost Network monitor allows you to monitor dsgIfTunnelGroupIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.