With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprSpanErrorCurrentPmdAbortFrames
rpr Span Error Current Pmd Abort Frames
1.0.8802.17.1.1.1.5.1.1.9
The number of received (PHY to MAC) frames that were aborted by the PMD.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprSpanErrorCurrentPmdAbortFrames 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.