With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdspLastAlarmTime
Cisco Digital Signal Processing Last Alarm Time
1.3.6.1.4.1.9.9.86.1.2.1.1.5
The value of sysUpTime when the last DSP Alarm occurred. The value of this object is 0 if the value of cdspLastAlarmCause object is 'noAlarm'.
Back to CISCO-DSP-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cdspLastAlarmTime on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.