With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
docsDevEvLastTime
DOCSIS Device Ev Last Time
1.3.6.1.2.1.69.1.5.8.1.3
When an entry reports only one event, this object will have the same value as the corresponding instance of docsDevEvFirstTime. When an entry reports multiple events, this object will record the value that docsDevDateTime had when the most recent event for this entry occurred.
Back to DOCS-CABLE-DEVICE-MIB MIB page.
IPHost Network monitor allows you to monitor docsDevEvLastTime 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.