With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprSpanDayInUcastClassBEirFrames
rpr Span Day In Ucast Class B Eir Frames
1.0.8802.17.1.1.1.3.3.1.7
The number of received (PHY to MAC) classB EIR unicast frames.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprSpanDayInUcastClassBEirFrames 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.