With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
icfVgPortSupportedCascadeMode
HP ICF Vg Port Supported Cascade Mode
1.3.6.1.4.1.11.2.14.8.1.1.3.1.1.7
This object describes whether the port hardware is capable of supporting cascaded repeaters, end nodes, or both. A port for which icfVgPortType is equal to 'cascadeInternal' or 'cascadeExternal' will always have a value of 'cascadePort' for this object.
Back to hp-icf MIB page.
IPHost Network monitor allows you to monitor icfVgPortSupportedCascadeMode 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 routers right now.