With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bstunPortGroup
Cisco Blocked Serial Tunneling Port Group
1.3.6.1.4.1.9.9.35.3.2.3
A collection of objects providing information about BSTUN enabled interfaces.
Back to CISCO-BSTUN-MIB MIB page.
IPHost Network monitor allows you to monitor bstunPortGroup on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.