With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
ipxCircNeighInternalNetNum
ipx Circuit Neigh Internal Net Num
1.3.6.1.4.1.23.2.5.2.1.1.28
on a WAN circuit.
Back to hpprocurve-v2-ipx MIB page.
IPHost Network monitor allows you to monitor ipxCircNeighInternalNetNum 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.