With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ceDiagEventQueryStatus
Cisco Entity Diagnostics Event Query Status
1.3.6.1.4.1.9.9.350.1.8.4.1.6
The status object used to manage rows in this table. When set to 'active', the query to search for diagnostic events is initiated. Once a row becomes active, values within the row cannot be modified, except by deleting and re-creating the row.
Back to CISCO-ENTITY-DIAG-MIB MIB page.
IPHost Network monitor allows you to monitor ceDiagEventQueryStatus on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.