With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bstunRouteAPIPHeaderVersion
Cisco Blocked Serial Tunneling Route APIP Header Version
1.3.6.1.4.1.9.9.35.1.4.1.1.19
Specifies the tunneling header format to use for APIP: v0, if set, indicates a 2 byte encapsulation header. The length of the header is included in the size of the sent packet. v1, if set, indicates a 2 byte encapsulation header. The length of the header is excluded from the size of the sent packet. v2, if set, indicates a 4 byte encapsulation header. The length of the header is excluded from the size of the sent packet.
Back to CISCO-BSTUN-MIB MIB page.
IPHost Network monitor allows you to monitor bstunRouteAPIPHeaderVersion 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.