With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
stpPortIndex
stp Port Index
1.3.6.1.4.1.11.2.14.3.6.15.1
The index value which uniquely identifies the port to which this entry is applicable. The port identified by a particular value of this index is the same interface/port as identified by the same value of ifIndex. Not an IEEE 802.1(d) reqmt.
Back to hp-icf MIB page.
IPHost Network monitor allows you to monitor stpPortIndex 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 wireless switches right now.