With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csiPortNumber
csi Port Number
1.3.6.1.4.1.9.9.378.1.2.4
Port Number of the port from where the notification is being generated.
Back to CISCO-SVC-INTERFACE-MIB MIB page.
IPHost Network monitor allows you to monitor csiPortNumber 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.