With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprClientIntervalOutMcastClassBCirOctets
rpr Client Interval Out Mcast Class B Cir Octets
1.0.8802.17.1.1.1.4.2.1.32
The number of client to MAC classB CIR multicast and broadcast octets in a particular interval in the past 24 hours.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprClientIntervalOutMcastClassBCirOctets on Cisco 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.