With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
portCpbTrunkMode
port Cpb Trunk Mode
1.3.6.1.4.1.9.5.1.19.1.1.6
Indicates the trunk capability of a port.
Back to CISCO-STACK-MIB MIB page.
IPHost Network monitor allows you to monitor portCpbTrunkMode on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.