With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprClientStatsOutMcastClassAFrames
rpr Client Stats Out Mcast Class A Frames
1.0.8802.17.1.1.1.4.4.1.27
The number of client to MAC classA multicast and broadcast frames.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprClientStatsOutMcastClassAFrames on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.