With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwrPctErroredSeconds
Cisco Wireless Pct Errored Seconds
1.3.6.1.4.1.9.9.136.1.6.2.1.5
This object represents the ratio of cumulative Codeword Errored Seconds (ES) to Link Admin Up seconds, expressed as a percentage.
Back to CISCO-WIRELESS-IF-MIB MIB page.
IPHost Network monitor allows you to monitor cwrPctErroredSeconds on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.