With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
clrRedundancyStateChangeTime
clr Redundancy State Change Time
1.3.6.1.4.1.9.9.650.1.1.4.1.3
The time of the last change in the current redundancy state.
Back to CISCO-L4L7MODULE-REDUNDANCY-MIB MIB page.
IPHost Network monitor allows you to monitor clrRedundancyStateChangeTime 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.