With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
hpRptrMonPtMcastPackets
hp Rptr Monitor Port Mcast Packets
1.3.6.1.4.1.11.2.14.11.2.2.3.1.1.5
This counter is incremented by one for each multicast packet of valid frame length received on this port. This object may not be implemented for repeaters which do not have a local network management agent.
Back to hpprocurve-hprptr MIB page.
IPHost Network monitor allows you to monitor hpRptrMonPtMcastPackets 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.