With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwrDspNumber
Cisco Wireless Dsp Number
1.3.6.1.4.1.9.9.136.1.7.1.1.4
This object identifies the DSP on which to create the histogram. If 0 is specified then the agent will automatically use the most logical DSP for the specified cwrHistClass parameter. If 0 has been specified then on reading this object the agent will return the DSP number that is being used to capture this histogram.
Back to CISCO-WIRELESS-IF-MIB MIB page.
IPHost Network monitor allows you to monitor cwrDspNumber on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.