With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
stpTopoNumChanges
stp Topo Num Changes
1.3.6.1.4.1.11.2.14.3.6.3
The number of topo changes since initialization of STP. see: IEEE 802.1(d) 6.8.1.1.3(3)
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IPHost Network monitor allows you to monitor stpTopoNumChanges 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.