With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgkHistoryEventTable
Cisco Gatekeeper History Event Table
1.3.6.1.4.1.9.10.40.1.2.2
The table contains a history of notification events which occurred during Gatekeeper operation.
Back to CISCO-GATEKEEPER-MIB MIB page.
IPHost Network monitor allows you to monitor cgkHistoryEventTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.