With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bsnAPIfDot11RTSFailureCount
bsn AP If Dot11 RT S Failure Count
1.3.6.1.4.1.14179.2.2.6.1.7
This counter shall increment when a CTS is not received in response to an RTS.
Back to AIRESPACE-WIRELESS-MIB MIB page.
IPHost Network monitor allows you to monitor bsnAPIfDot11RTSFailureCount on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.