With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bsnAPIfDot11ACKFailureCount
bsn AP If Dot11 AC K Failure Count
1.3.6.1.4.1.14179.2.2.6.1.8
This counter shall increment when an ACK is not received when expected.
Back to AIRESPACE-WIRELESS-MIB MIB page.
IPHost Network monitor allows you to monitor bsnAPIfDot11ACKFailureCount 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.