With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgkHistoryEventIndex
Cisco Gatekeeper History Event Index
1.3.6.1.4.1.9.10.40.1.2.2.1.1
A monotonically increasing integer for the sole purpose of indexing events. When it reaches the maximum value, an extremely unlikely event, the agent wraps the value back to 1 and may flush existing entries.
Back to CISCO-GATEKEEPER-MIB MIB page.
IPHost Network monitor allows you to monitor cgkHistoryEventIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.