With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprClientStatsInMcastClassBCirFrames
rpr Client Stats In Mcast Class B Cir Frames
1.0.8802.17.1.1.1.4.4.1.12
The number of MAC to client classB CIR multicast and broadcast frames
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprClientStatsInMcastClassBCirFrames on Cisco 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.