With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
frxLastChange
Cisco 90i Last Change
1.3.6.1.4.1.1570.1.6.1.1.5
Time since DSL went in sync or lost sync in 0.01 second increments.
Back to CISCO-90-MIB MIB page.
IPHost Network monitor allows you to monitor frxLastChange 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.