With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
frxChBeRx
Cisco 90i Current Hour Be Rx
1.3.6.1.4.1.1570.1.6.5.1.34
Current Hour Block Errors - Receive direction. Receive is data from the customer towards the network. Block errors are 12 millisecond time periods in which a physical link level (e.g. DSL CRC or BPV) error occurs. These errors are not the same as frame relay level errors. This register is defined by Bellcore TR-TSY-000829. Indexed by Bank.ChannelUnit.Port.Address
Back to CISCO-90-MIB MIB page.
IPHost Network monitor allows you to monitor frxChBeRx 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.