With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
parTrkRemotePortNumber
par Trk Remote Port Number
1.3.6.1.4.1.351.130.2.2.1.25
This object specifies the port number of the interface card to which the trunk is attached on the remote node.
Back to CISCO-WAN-PAR-MIB MIB page.
IPHost Network monitor allows you to monitor parTrkRemotePortNumber on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.
