With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
evthThreshold
evth Threshold
1.3.6.1.4.1.11.2.14.1.7.3.4
The threshold against which the variable specified in evthObject is tested over the time interval specified in the evthTimeInterval When the threshold is met or exceeded, the event is triggered. The event will not trigger again until the variable falls to or below the evthHysteresis value, and then meets or exceeds the threshold.
Back to hp-icf MIB page.
IPHost Network monitor allows you to monitor evthThreshold on Hewlett Packard 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.