With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bstunRouteDLCI
Cisco Blocked Serial Tunneling Route DLCI
1.3.6.1.4.1.9.9.35.1.4.1.1.12
If bstunRouteType is serialFrameRelay or serialLLC2 then this is the frame relay dlci circuit used for the point-to-point link to the remote partner; if bstunRouteType is ip or serial then this field is 0.
Back to CISCO-BSTUN-MIB MIB page.
IPHost Network monitor allows you to monitor bstunRouteDLCI 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.