With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csiNportInFrames
csi Nport In Frames
1.3.6.1.4.1.9.9.378.1.1.4.1.2
Number of incoming frames on this virtual N-port.
Back to CISCO-SVC-INTERFACE-MIB MIB page.
IPHost Network monitor allows you to monitor csiNportInFrames 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.